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45results about How to "Meet emission regulations" patented technology
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Catalyst with low-temperature activity for purification of volatile organic pollutants and preparation method
InactiveCN108246312AEfficient emissionsMeet emission regulationsGas treatmentHeterogenous catalyst chemical elementsTherapeutic effectOxide coating
The invention relates to a catalyst with low-temperature activity for purification of volatile organic pollutants and a preparation method. The catalyst comprises a carrier, wherein the carrier is a cordierite cellular carrier, and the carrier is coated with an oxide coating for purification of industrial volatile organic pollutants. In the coating, alumina is adopted as a loading matrix for noblemetals Pt and Pd, and a Mn-Ce-Zr composite oxide is synthesized and added to promote efficient conversion of the organic pollutants by a VOCs (volatile organic chemicals) catalyst. According to the prepared VOCs catalyst, a relatively high conversion rate can be achieved by adopting a relatively small amount of noble metals, namely the preparation of VOCs catalyst by adopting the preparation method of the invention has the advantage of lower organic pollutant complete conversion temperature, namely relatively low HCT100; the Mn-Ce-Zr composite oxide prepared by a sol-gel method is applied toimprovement of the durability of the VOCs catalyst and the VOCs catalyst achieves a relatively good treatment effect on CO.
Owner:WUXI WEIFU ENVIRONMENT PROTECTION CATALYST
Double-channel butterfly valve structure
InactiveCN101349222AFlexible rotationAvoid stickingNon-fuel substance addition to fuelInternal combustion piston enginesDrive shaftPulse energy
The invention relates to a structure of a dual channel butterfly valve arranged on a hot end, in particular to a hot end dual channel EGR valve which is mounted on a six cylinder diesel engine. The hot end dual channel EGR valve is characterized in that two waste gas channels are arranged on the body of the EGR valve, a drive shaft assembly is mounted in the EGR valve body, two EGR valve plates are fixed on a drive shaft of the drive shaft assembly via rivets, a sealing gasket, a pressing spring and a protective sleeve are arranged on the drive shaft of the drive shaft assembly, the pressing spring tightly compresses the sealing gasket, and is arranged in the protective sleeve. The drive shaft is equipped with an adjusting sleeve which is used to adjust the clearance between the two EGR valve plates. The dual channel butterfly valve can sufficiently utilize the exhaust pulse energy of the six cylinder diesel engine, and realizes higher EGR rate to purify the diesel engine, and thereby enabling the engine to be easier to realize recycling of waste gas, and meeting high requirements of discharge regulations.
Owner:中国第一汽车集团公司无锡柴油机厂
Low-pressure waste gas recirculating system suitable for biodiesel engine and control method
InactiveCN112177783AReduce NOX emissionsImprove efficiencyElectrical controlNon-fuel substance addition to fuelExhaust fumesProcess engineering
The invention relates to a low-pressure waste gas recirculating system suitable for a biodiesel engine and a control method. The low-pressure waste gas recirculating system comprises an intercooling unit, a sensor assembly and a valve body. The intercooling unit communicates with a pipeline between a turbine and a selective catalytic reducer. The intercooling unit communicates with a pipeline between a throttle valve and a supercharger through the valve body. The sensor assembly comprises a second temperature sensor, a first pressure sensor, a second pressure sensor and an NOX sensor. The first pressure sensor is located between the valve body and the intercooling unit. The second pressure sensor is located between the throttle valve and the supercharger. The second temperature sensor is located between the turbine and the selective catalytic reducer. The NOX sensor is located at the downstream of the selective catalytic reducer. Compared with the prior art, the emission of NOX in theexhausted gas of the biodiesel engine can be thoroughly reduced, and therefore increasingly strict emission regulations can be met.
Owner:TONGJI UNIV
Electronic control system used for small-sized single-cylinder four-stroke gasoline engine
ActiveCN105156211AEasy to carrySimple and efficient operationElectrical controlMachines/enginesIntake pressureElectronic speed control
The invention relates to an electronic control system for a small-sized single-cylinder four-stroke gasoline engine. An MC9S12P128 chip serves as a main chip of an electronic control unit. An MC33812 chip serves as a driving chip of three main actuators of an oil sprayer, an igniter and a relay. Selected sensor parts include an engine body temperature sensor, an inlet gas temperature sensor, an inlet gas pressure sensor, a throttle position sensor and a Hall type crankshaft position sensor. Monitoring and calibrating functions of a liquid crystal touch screen are achieved in a CAN communication manner. According to the electronic control system, the oil spraying amounts and advance angles of ignition under all working conditions can be accurately controlled, in addition, a self-diagnostic function is achieved, and therefore the dynamic property, the economical efficiency and the emission performance of the engine are improved, and the requirement of higher-stage emission regulations is met.
Owner:JIANGSU UNIV
Off-gas treatment system based on NTP technology and control method
InactiveCN106382145AEfficient recyclingEmission reductionInternal combustion piston enginesSilencing apparatusControl systemDieseling
The invention provides an off-gas treatment system based on the NTP technology and a control method. The system comprises an aftertreatment device, a first NTP injection system, a second NTP injection system, a power source supply device, an NTP generator cooling system and a control system. The first NTP injection system utilizes air as an air source to generate an active substance to oxidize carbon deposits deposited in DPF and achieve off-line regeneration of the DPF. The second NTP injection system utilizes N2 as an air source to generate active gas to reduce NOx adsorbed in a NOx adsorbing device and achieve desorption of the NOx adsorbing device. The system utilizes the DPF and the NOx adsorbing device to purify and treat off gas of a diesel engine, effectively reduces PM and NOx in the off gas of the diesel engine and can remove PM and NOx at the same time. By the adoption of the two NTP injection systems, regeneration of the DPF and desorption of the NOx adsorbing device can be achieved respectively, and then efficient cyclic utilization of the DPF and the NOx adsorbing device is achieved. NOx is converted into N2 after being treated through the system, and N2 is non-poisonous and harmless and can meet the increasingly stringent emission regulation.
Owner:JIANGSU UNIV
Electronic control system and variable oil injecting pressure control method of internal combustion engine
ActiveCN109779776AAvoid the "wet wall effect"Timely injection pressure controlElectrical controlMachines/enginesCombustionExternal combustion engine
The invention provides an electronic control system and a variable oil injecting pressure control method of an internal combustion engine. The method comprises the following steps: acquiring current working state determining parameters and current working stage influence parameters of the internal combustion through a parameter acquiring module; determining the current working state of the currentinternal combustion through a stage determining module based on the working stage determining parameters; transferring a target oil injecting pressure list in a storing module through an oil injecting pressure control module based on the current working stage; determining target oil injecting pressure value based on the current oil injecting pressure list and the current working state influence parameters; and adjusting the current oil injecting pressure into the target oil injecting pressure value. According to the method, the oil injecting pressure is adjusted based on the real-time workingcondition of the internal combustion, so that various gaseous materials can be optimally exhausted; and the exhausted materials meet related emission regulations.
Owner:UNITED AUTOMOTIVE ELECTRONICS SYST
Hydrogen and gasoline dual fuel engine
InactiveCN102155306ACurbing the disadvantages of underpoweredReduce usageInternal combustion piston enginesFuel supply apparatusGasoline fuelAutomobile emission
The invention provides a hydrogen and gasoline dual fuel engine. The hydrogen and gasoline dual fuel engine comprises a gas inlet manifold assembly, an engine body, an exhaust manifold assembly, a gasoline supply system and a hydrogen supply system; the terminals of the gasoline supply system are gas channel jet gasoline nozzles arranged on both sides of each gas inlet manifold of the gas inlet manifold assembly; and the terminals of the hydrogen supply system are hydrogen nozzles arranged on both sides of each gas inlet manifold of the gas inlet manifold assembly. In the hydrogen and gasoline dual fuel engine, a set of hydrogen nozzles and a set of hydrogen supply system of the engine are additionally arranged on the different sides of the gas channel jet gasoline injectors of the gas inlet manifolds of the conventional gasoline engine simultaneously. Under the different working conditions of the engine, hydrogen fuel and gasoline fuel can be used selectively, so the use of fossil fuel is reduced and the service life is prolonged, and harmful emissions of the engine is reduced; the engine can meet the increasingly strict automobile emission rule; meanwhile, due to the selective use of the hydrogen and the gasoline, the shortcoming that the power is insufficient due to a low specific heat value of the hydrogen can be restrained effectively.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
Anti-aging volatile organic compound purification catalyst and preparation method for same
ActiveCN109225216AImprove stabilityEfficient emissionsGas treatmentHeterogenous catalyst chemical elementsCatalytic oxidationCordierite
The invention discloses an anti-aging volatile organic compound purification catalyst. The surface of a carrier is coated with an oxidative catalyst coating. The coating contains Al2O3, CeO2, MnO2, anoble metal Pt and a noble metal Pd. Corresponding to every liter of a cordierite honeycomb ceramic carrier , the using amounts of Al2O3, CeO2 and MnO2 are 80 to 200g, 5 to 30g and 10 to 30g respectively. Corresponding to every cubic foot of the cordierite honeycomb ceramic carrier, the using amounts of the noble metal Pt and the noble metal Pd are 6 to 50g and 10 to 20g respectively. A preparation method for the anti-aging volatile organic compound purification catalyst comprises the following steps: impregnating Al2O3 powder in a noble metal oxide solution, drying, calcining, crushing and grinding Al2O3 slurry loaded with the noble metals Pt and Pd, preparing a precursor of CeO2 and a precursor solution of MnO2, adding dropwise the precursor solution into the ground slurry, and executingcoating step and a drying and calcination step. The catalyst is high in stability; emission pollutants can be effectively catalyzed for oxidation and converted into pollution-free CO2 and H2O, thereby meeting the requirements of emission regulations.
Owner:WUXI WEIFU ENVIRONMENT PROTECTION CATALYST
System and method for switching ship fuel oil
ActiveCN110023188ALow costConversion time minimizedElectrical controlInternal combustion piston enginesFuel tankFuel oil
Disclosed is a ship fuel oil switching system for switching a type of fuel oil, which has been used as fuel for an engine, to another type of fuel oil as fuel for the engine. The ship fuel oil switching system comprises: a supply portion for supplying fuel oil; a circulation portion for receiving fuel oil from the supply portion and circulating the same; and a control portion for controlling the supply portion and the circulation portion. The supply portion comprises multiple tanks for storing different types of fuel oil. The engine receives fuel oil from the circulation portion. Fuel oil thatremains after being used by the engine is recirculated through the circulation portion. The control portion controls the flow rate of fuel oil discharged from each of the multiple tanks, thereby adjusting the mixing ratio of fuel oil sent to the engine.
Owner:DAEWOO SHIPBUILDING & MARINE ENG CO LTD
Catalyst based on volatile organic pollutant purification and preparation method thereof
InactiveCN109985661AEfficient emissionsMeet emission regulationsGas treatmentMolecular sieve catalystsMolecular sieveGas phase
The invention relates to a catalyst based on volatile organic pollutant purification and a preparation method thereof. A catalyst carrier is coated with an oxidizing catalyst coating, and the oxidizing catalyst coating contains a ZSM-5 molecular sieve, an Mn-Co-Zr composite oxide, ZrO2 sol and noble metal Au. The preparation method comprises an Mn-Co-Zr composite oxide synthesis step, a catalyst slurry preparation step and a catalyst slurry coating step. The catalyst can effectively catalyze oxidation of discharged pollutants, and can oxidize gas-phase pollutants, organic pollutants, CO and the like into harmless gas CO2 and H2O, so that requirements of emission regulations are met. The preparation method disclosed by the invention is simple, and the steps are easy to operate. The catalystprepared by the preparation method disclosed by the invention has good low-temperature ignition activity on organic pollutants and has a low CO ignition temperature, so that the reaction of the organic pollutants is promoted, and good durability is achieved.
Owner:WUXI WEIFU ENVIRONMENT PROTECTION CATALYST
Variable spray hole type electric control oil sprayer
InactiveCN103362710AImprove powerImprove economyFuel injection apparatusMachines/enginesElectric controlActuator
The invention aims at providing a variable spay hole type electric control oil sprayer which comprises an electric control actuator part, an oil nozzle and an oil sprayer body, wherein the electric control actuator part and the oil nozzle are mounted at the upper end and the lower end of the oil sprayer body respectively; the oil nozzle comprises a needle valve and a needle valve base; the needle valve is mounted in the needle valve base; an oil containing groove is formed by the needle valve and the needle valve base; main oil spray holes and auxiliary oil spray holes are formed at the lower end part of the needle valve base from the bottom up sequentially; a double sealing surface structure is arranged at the lower end part of the needle valve; a bevelled sealing surface and a cylindrical sealing surface are arranged at the lower end part of the needle valve from the top down sequentially; when the needle valve is positioned at the undermost end of a stroke, the cylindrical sealing surface seals the main oil spray holes, and the bevelled sealing surface seals the auxiliary oil spray holes; and when the needle valve ascends, the auxiliary oil spray holes are communicated with the oil containing groove earlier than the main oil spray holes. The oil sprayer facilitates controlling small oil quantity spray in a multi-spray process, and can allow main spray to be combined with boot type spray, so that an oil spray effect is improved, the power performance and the economical efficiency of an engine are improved, and stricter discharge laws and regulations are met.
Owner:HARBIN ENG UNIV
Rotating type automobile active diffuser
PendingCN110450866AAchieve rotary motionImprove aerodynamic performanceAerodynamics improvementVehicle body streamliningEngineeringDriving safety
The invention provides a rotating type automobile active diffuser. The rotating type automobile active diffuser is installed at the rear of a vehicle, and comprises a diffuser support fixed relative to a vehicle body, a motor fixed to the diffuser support, a driving rod and a diffuser inner plate installed on the diffuser support, wherein the driving rod is driven by the motor to rotate. The edgeof the diffuser inner plate is fixed to the diffuser support through a fixing shaft and a bearing seat. The middle part of the diffuser inner plate is connected with the driving rod through a connecting rod. Under the drive of the motor, the diffuser inner plate performs rotating action relative to the diffuser support in a certain angle range with the fixing shaft as a rotating shaft to form an air flow channel for air flowing between the diffuser inner plate and the diffuser support. According to the rotating type automobile active diffuser, the aerodynamics performance of the whole vehicleis improved, the driving safety is ensured, the fuel consumption is reduced, the CO2 emission is reduced, and practical and beautiful functions are provided.
Owner:YANFENG PLASTIC OMNIUM AUTOMOTIVE EXTERIOR SYST
Exhaust gas recirculation cooling water pump structure
InactiveCN103410740AReduce NOxMeet emission regulationsInternal combustion piston enginesNon-fuel substance addition to fuelExhaust fumesElectric generator
The invention relates to an exhaust gas recirculation cooling water pump structure used by a diesel engine for discharge. The exhaust gas recirculation cooling water pump structure comprises a diesel engine generator shell body; a generator rotating shaft is rotatablely arranged in the diesel engine generator shell body; a water pump shell is fixed on the diesel engine generator shell body corresponding to an output end of the generator rotating shaft; the water pump shell is provided with a water inlet joint and a water outlet joint; the water pump shell is internally provided with a pump rotor; the pump rotor and the generator rotating shaft are fixed in a coaxial way; the pump rotor is provided with a blade. The exhaust gas recirculation cooling water pump structure utilizes a generator to drive a water pump, and an exhaust gas recirculation structure is cooled by directing diverting water from a water tank, so that the demand of cooling the exhaust gas can be met, NOx can be reduced, and the emission regulation can be met. The exhaust gas recirculation cooling water pump structure has the advantages of being simple and compact in structure, convenient to use and the like.
Owner:JIANGSU SIDA POWER MECHANICAL GROUP
Urea solution double-nozzle aftertreatment device and control method thereof
PendingCN113565604AMeet emission regulationsReduce consumptionInternal combustion piston enginesExhaust apparatusDieselingControl theory
The invention belongs to the technical field of diesel engine tail gas SCR urea solution injection, and particularly relates to a urea solution double-nozzle aftertreatment device and a control method thereof. The urea solution double-nozzle aftertreatment device comprises a first urea nozzle and a second urea nozzle, wherein the first urea nozzle is arranged behind an engine vortex; the rear end of the first urea nozzle is sequentially connected with a first SCR carrier, a DOC carrier, a DPF carrier, a second SCR carrier and an ASC carrier; the second urea nozzle is arranged between the DPF carrier and the second SCR carrier; and the second urea nozzle is connected with the first urea nozzle and is connected with a urea pump. The double nozzles are adopted, the price of the nozzles is low, the total volume of the SCR carriers is hardly changed, the total cost is controlled, the first urea nozzle fully utilizes the characteristic that the temperature of the position behind the vortex is high, a urea solution is hydrolyzed to generate ammonia gas, the ammonia gas participates in the reaction of the first SCR carrier, the device is limited by the arrangement space, the size of the first SCR carrier is small, and the efficiency is high at the low temperature.
Owner:WUXI WEIFU LIDA CATALYTIC CONVERTER
Ceramic fiber catalytic filter tube with function of catalytically oxidizing organic pollutants and dust remover
ActiveCN112892110AIncrease concentrationGood catalytic activityCombination devicesDispersed particle filtrationFiberOrganopónicos
The invention discloses a ceramic fiber catalytic filter tube with a function of catalytically oxidizing organic pollutants and a dust remover. The ceramic fiber catalytic filter tube comprises a ceramic fiber tube, a catalyst coating and a honeycomb carrier; wherein the ceramic fiber pipe is of a pipe body structure with an opening in the top; the top opening of the ceramic fiber tube is filled with the honeycomb carrier; and the catalyst coating is coated on the inner wall of the ceramic fiber tube and the honeycomb carrier. The main components of the ceramic fiber tube are Al2O3, SiO2 and TiO2, and TiO2 is added, so that organic pollutants in tail gas can be adsorbed; wherein the ceramic fiber tube and the V2O5 carrier are coated with the catalyst coatings respectively, organic pollutants in tail gas can be effectively catalyzed and oxidized to generate harmless gas CO2, H2O and the like, and therefore the requirements of emission regulations are met.
Owner:JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
Method and device for reducing pollution from exhaust emission of internal combustion engine
InactiveCN101694175AImprove protectionReduce manufacturing costInternal combustion piston enginesExhaust apparatusChemical reactionPositive pressure
The invention relates to a method and a device for reducing pollution from exhaust emission of an internal combustion engine. A device used for reserving air is arranged between a crank case and an exhaust silencer of the internal combustion engine; an air inlet of an air reservation cavity of the device used for reserving air is provided with a first check valve; the crank case and the exhaust silencer of the internal combustion engine are respectively communicated with the air reservation cavity through an air passage; and the air passage communicated between the exhaust silencer and the air reservation cavity is provided with a second check valve. By using the alternative positive and negative pressure generated in the crank case when a piston of the internal combustion engine moves, specifically by using the negative pressure generated in the crank case when the piston moves up, fresh air is sucked into the device used for reserving air until reserved sufficiently; and by using the positive pressure generated in the crank case when the piston moves down, the fresh air reserved in the device used for reserving air is delivered to the exhaust silencer of the internal combustion engine so that the HC, CO and NOx in the high temperature waste gas exhausted by the internal combustion engine adequately first react with abundant oxygen chemically, and then the waste gas is discharged, thus greatly reducing the pollution from exhaust emission of the internal combustion engine.
Owner:LONCIN MOTOR
Efficient printing and dyeing wastewater aeration treatment device
InactiveCN109095654AImprove the aeration effectIncrease oxygen concentrationWater aerationWater/sewage treatmentTherapeutic effectAir blower
The invention provides an efficient printing and dyeing wastewater aeration treatment device which comprises an aeration tank, wherein a transmission tank is connected with the outer wall of the upperpart of the left side of the aeration tank; a connecting shaft is transversely connected and fixed in the inner wall at the upper part of the aeration tank through a connecting bearing; stirring wheel rollers are fixedly welded in the middle of the connecting shaft; an aeration tube is connected with the right side of an air blower; a filtering net is arranged at the upper part on the right sideof the aeration tube; the filtering net is vertically connected and fixed inside a water sucking hole; the water sucking hole is formed in the inner wall of the right side of the aeration tank; the right side of the water sucking hole is accessed to a connecting tube; the connecting tube is accessed to a coagulation tank rightwards; a water sucking pump is connected and mounted in the middle of the connecting tube; the coagulation tank is arranged on the right side of the aeration tank; a stirring motor is connected and fixed on the outer wall at the upper part of the coagulation tank throughbolts; a stirring rod is vertically accessed to the coagulation tank; stirring blades are welded and fixed at the lower part of the stirring rod; a water conveying tube is accessed to an adsorption tank rightwards. The device is remarkable in overall treatment effect and good in practicability.
Owner:宛兴友
Off-line device used for spent fuel transporting cask helium purification and cooling
PendingCN108735324AMeet emission regulationsEasy to transportPortable shielded containersRadioactive decontaminationActivated carbonMolecular sieve
The invention belongs to the technical field of nuclear fuel back end processing, and particularly relates to an off-line device used for spent fuel transporting cask helium purification and cooling.The device comprises a water level controller, a precooler, a gas-water separator, a filter, a molecular sieve and an activated carbon bed; one downstream path of the water level controller is connected to a pool, and the other path is connected with the precooler through a valve; the lower stream of the precooler is connected with the gas-water separator; one downstream path of the water level controller drains separated water to the pool, and the other path is connected to the molecular sieve through the filter; the lower stream of the molecular sieve is connected with the activated carbon bed; paths connected with a purifying trolley are all arranged at the lower streams of the filter, the molecular sieve and the activated carbon bed. According to the device, on the one hand, helium ina cask can be cooled to 35 DEG C from 200 DEG C, on the other hand, the helium can be purified, and the radioactive emission requirements are met.
Owner:JIANGSU NUCLEAR POWER CORP
Aging-resistant volatile organic compound purification catalyst and preparation method thereof
ActiveCN109225216BImprove stabilityEfficient emissionsGas treatmentHeterogenous catalyst chemical elementsPtru catalystPhysical chemistry
The invention discloses an anti-aging catalyst for purifying volatile organic compounds. The surface of the carrier is coated with an oxidative catalyst coating; the coating contains Al 2 o 3 , CeO 2 , MnO 2 , noble metal Pt and noble metal Pd; corresponding to each liter of cordierite honeycomb ceramic carrier, Al 2 o 3 , CeO 2 with MnO 2 The usage amounts are 80~200g, 5~30g, and 10~30g respectively; and corresponding to each cubic foot of cordierite honeycomb ceramic carrier, the usage amounts of noble metal Pt and noble metal Pd are 6~50g and 10~20g respectively; its preparation method Includes: Precious metal oxide solution impregnation into Al 2 o 3 Al on powder, loaded with precious metals Pt and Pd 2 o 3 Slurry drying and roasting, crushing and grinding, and preparation of CeO 2 precursors and MnO 2 The precursor solution, the precursor solution is added dropwise to the slurry after grinding, the coating step and the drying and roasting step. The catalyst of the present invention not only has good stability, but also can effectively catalyze and oxidize emission pollutants, and can convert them into pollution-free gas CO 2 and H 2 O, so as to meet the requirements of emission regulations.
Owner:WUXI WEIFU ENVIRONMENT PROTECTION CATALYST
Low-emission and high-power starting control method for diesel engine vehicles
ActiveCN106593665BEmissions will not increaseImprove performanceElectrical controlMachines/enginesStart timeDiesel locomotive
Owner:SAIC MOTOR
System and method for switching marine fuel oil
ActiveCN110023188BMeet emission regulationsLow costElectrical controlInternal combustion piston enginesFuel tankProcess engineering
Owner:DAEWOO SHIPBUILDING & MARINE ENG CO LTD
Fuel filler assembly and manufacturing method thereof
The present invention provides a filler neck assembly capable of minimizing gas leakage to the outside and a method for manufacturing the filler neck assembly. The filler neck assembly is connected to an external refueling nozzle and guides supply of fuel from the refueling nozzle to a fuel tank and comprises: a cap holder into which the refueling nozzle is inserted; and a filler pipe having a nozzle support region mutually coupled to the cap holder and supporting the refueling nozzle, and a pipe region integrally extended from the nozzle support region and interconnecting the nozzle support region and the fuel tank.
Owner:KOREA FUEL TECH
An Electronic Control System for Small Single-Cylinder Four-Stroke Gasoline Engine
ActiveCN105156211BImprove powerImprove economyElectrical controlMachines/enginesThrottle position sensorActuator
Owner:JIANGSU UNIV
General-purpose engine with low exhaust gas emission
InactiveCN101705856AReduce pollutionEmission of pollution acceleratedInternal combustion piston enginesExhaust apparatusChemical reactionPositive pressure
The invention relates to a general-purpose engine with low exhaust gas emission, comprising a general-purpose engine case body, a cylinder head and a cylinder cover, wherein a cavity between the cylinder head and the cylinder cover is a rocker arm chamber; a muffler is communicated with an exhaust port of the cylinder head through an exhaust pipe; a crankcase cavity of the case body is communicated with the rocker arm chamber at the upper end of the cylinder head through an air duct; the cylinder cover is provided with an air inlet hole for communicating the outside with the rocker arm chamber; a one-way valve which is opened at negative pressure is arranged at the air inlet hole; and the cylinder cover is also provided with an air outlet which is communicated with the muffler through a one-way valve which is opened at positive pressure. Fresh air can be sucked into the rocker arm chamber for storage by the negative pressure formed in a crankcase when a piston of the engine reciprocates and the stored fresh air can be forced to be sent to the muffler by the positive pressure formed in the crankcase when the piston of the engine reciprocates, thus HC, CO and NOx in high-temperature exhaust gas exhausted from the engine can undergo fully chemical reaction with sufficient oxygen in the muffler and then can be exhausted, and the exhaust gas emission of the general-purpose engine can be effectively reduced.
Owner:LONCIN MOTOR
A main oil system structure and a carburetor with the structure
ActiveCN103925117BImprove atomization effectPromote atomizationMachines/enginesEngineeringCarburetor
The invention discloses a main oil system structure and a carburetor having the same. The carburetor comprises a carburetor body and a main oil system structure; the main oil system structure comprises a main oil well, a main spray pipe, a main measuring hole and an atomization adjusting mechanism, wherein the main oil well is arranged in the carburetor body, the main spray pipe and the main measuring hole are installed in the main oil well; the atomization adjusting mechanism is arranged in the carburetor body relating to the main spray pipe and a choke hole of the carburetor body, the atomization adjusting mechanism is connected with the speed regulating mechanism of an engine to be synchronous with the working condition of the engine, and the atomization adjusting mechanism improves the atomization performance of the carburetor through simultaneously changing the sectional area of the venture of the carburetor and the fuel spraying quantity of the main spray pipe, so as to enable the engine to keep good atomization effect under various working conditions.
Owner:陈俭敏 +1
A Method for Determining the Output Oil Quantity of Electronically Controlled Diesel Engine under Abnormal Condition
InactiveCN104153899BImprove powerImprove economyElectrical controlMachines/enginesEngineeringDiesel engine
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Motor vehicle engine waste gas treatment system integrated with silencing structure
PendingCN111794828AReduce flow rateReduce vibration and noise componentsExhaust apparatusSilencing apparatusProcess engineeringMechanical engineering
The invention discloses an engine waste gas treatment system integrated with a silencing structure. The engine waste gas treatment system comprises a plurality of waste gas treatment modules, each waste gas treatment module defines an internal channel through which gas flow can pass; the plurality of waste gas treatment modules are sequentially connected in series; the engine waste gas treatment system further comprises an outlet pipe communicating with an internal channel of the most downstream waste gas treatment module in the plurality of waste gas treatment modules, wherein the most downstream waste gas treatment module is provided with a cylindrical shell; the outlet pipe penetrates through a closed end cover of the cylindrical shell, at least part of the silencing structure is arranged in the cylindrical shell, and the silencing structure comprises a silencing baffle, a plurality of silencing through holes for gas flow to pass through are formed in the silencing baffle, and the silencing baffle is fixed to the upstream of the closed end cover in the cylindrical shell.
Owner:ROBERT BOSCH GMBH
Natural gas postprocessor assembly conforming to national VI standard
InactiveCN110966073AEmission reductionMeet emission regulationsSilencing apparatusMachines/enginesMetal coatingEnvironmental engineering
The invention aims to provide a natural gas postprocessor assembly conforming to the national VI standard to effectively reduce the emission of pollutants in tail gas and meet the national VI standard. The postprocessor mainly comprises a packaging unit, a packaging cavity is formed in the packaging unit, a front carrier is arranged at the front end of the packaging cavity, a rear carrier is arranged at the rear end of the packaging cavity, the front carrier and the rear carrier are both honeycomb carriers, Pt, Pd and Rh precious metal coatings are coated in holes of the front carrier, and Ptnoble metal coatings are coated in holes of the rear carrier; an air inlet pipe assembly is communicated with the front end of the packaging unit; and an air outlet pipe assembly is communicated withthe rear end of the packaging unit.
Owner:SINO TRUK JINAN POWER
Low-emission and high-power-performance starting control method of diesel engine vehicle
ActiveCN106593665AEmissions will not increaseImprove performanceElectrical controlMachines/enginesStart timeDiesel locomotive
The invention relates to the field of vehicle running control, in particular to a starting control method of a diesel engine vehicle, and discloses a low-emission and high-power-performance starting control method of a diesel engine vehicle. The method comprises the steps that EGR has the starting exhaust gas recirculation amount and the running exhaust gas recirculation amount; and the starting time is set, control is carried out according to signals transmitted by a transmission control unit (TCU), and according to control, in a normal state, the running exhaust gas recirculation amount is selected as the exhaust gas recirculation amount of the EGR, when an engine control unit (ECU) obtains a starting signal, the exhaust gas recirculation amount of the EGR is adjusted to the starting exhaust gas recirculation amount within the starting time, and the exhaust gas recirculation amount is adjusted back to the running exhaust gas recirculation amount till the starting time is up. According to the method, after the starting time is calibrated, the instant oil injection amount is adopted in the starting stage of the vehicle to control the exhaust gas recirculation amount of the exhaust gas recirculation (EGR), the performance of the vehicle in the starting stage is greatly improved, meanwhile, the overall emission of the vehicle cannot be increased due to the fact that the time period is short, and the newest emission regulation requirements can be met as well.
Owner:SAIC MOTOR
Cam based on flexible engine oil injection
InactiveCN102678410AStable jobEmission reductionFuel injection apparatusMachines/enginesInjection pressureInitial rate
The invention aims to provide a cam based on flexible engine oil injection. The cam comprises a rise travel section and a return section, wherein the rise travel section corresponds to a positive equally accelerating stage, a working section and a positive equally decelerating stage of a motion rule of an engine plunger driven piece; the return section corresponds to a reverse equally accelerating stage, a reverse constant speed stage and a reverse equally decelerating stage of the motion rule of the engine plunger driven piece; the reverse constant speed stage has the rate of v3; and the working section comprises an accelerating stage and a positive constant speed stage, wherein the accelerating stage has the initial rate of v1, and the positive constant speed stage has the rate of v2. The cam has the advantages that the requirements of oil injection pressure, oil injection speed and oil injection timing of a diesel engine at high / low rotary speed can be met, the oil injection flexibility under high-rotary speed working conditions can be improved, and the oil injection pressure under low-rotary speed working conditions is increased.
Owner:HARBIN ENG UNIV
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