43 results about "Automotive diesel engine" patented technology

A dosing valve assembly is disclosed for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve assembly comprises a control valve coupled to a source of the reducing agent, a reducing agent delivery valve constructed and arranged for coupling to the exhaust manifold to enable a specified quantity of reducing agent to be administered into the exhaust stream, and an elongated conduit disposed between the control valve and reducing agent delivery valve for fluidly communicating reducing agent from the control valve to the reducing agent delivery valve. The disclosed arrangement enables the reducing agent delivery valve to be coupled to the exhaust manifold and the control valve to be displaced from the reducing agent delivery valve and away from the high temperature environment associated with the exhaust manifold.

A fuel injection system for automotive diesel engine is provided which is equipped with a fuel pressure sensor working to measure the pressure of fuel in an accumulator and a pressure-reducing valve working to drain the fuel from the accumulator. The system is designed to ensure enhanced reliability of diagnosis of the pressure-reducing valve. The system works to make a temporal diagnosis of the pressure-reducing valve based on the behavior of the pressure in the accumulator upon opening of the pressure-reducing valve after an ignition switch is turned off. After elapse of a given period of time, when it is determined that a value of the pressure in the accumulator, as measured by the fuel pressure sensor, lies near the atmospheric pressure, the system determines that the fuel pressure sensor is operating properly and fixes the temporal diagnosis of the pressure-reducing valve ultimately.

A fuel injection system for automotive diesel engine is provided which is equipped with a fuel pressure sensor working to measure the pressure of fuel in an accumulator and a pressure-reducing valve working to drain the fuel from the accumulator. The system is designed to ensure enhanced reliability of diagnosis of the pressure-reducing valve. The system works to make a temporal diagnosis of the pressure-reducing valve based on the behavior of the pressure in the accumulator upon opening of the pressure-reducing valve after an ignition switch is turned off. After elapse of a given period of time, when it is determined that a value of the pressure in the accumulator, as measured by the fuel pressure sensor, lies near the atmospheric pressure, the system determines that the fuel pressure sensor is operating properly and fixes the temporal diagnosis of the pressure-reducing valve ultimately.

A dosing valve assembly is disclosed for administering a reducing agent into an exhaust stream from an internal combustion engine upstream of a catalytic converter and diesel particulate filter. The dosing valve assembly includes a control valve coupled to a source of reducing agent, a delivery valve constructed and arranged for coupling to the exhaust stream to enable a quantity of reducing agent to be administered into the exhaust stream, and an elongated conduit connecting the control valve and delivery valve for fluidly communicating reducing agent from the control valve to the fuel delivery valve. The disclosed arrangement enables the control valve to be displaced from the delivery valve and thus away from the high temperature environment proximal to the exhaust stream.

The invention belongs to the technical field of auto parts, and relates to a fuel delivery pump with a floated cycloid rotor. The fuel delivery pump with the suspended cycloid rotor comprises a fuel delivery pump body, an outer rotor, an inner rotor and a universal joint. The fuel delivery pump body is in an integral structure. A transverse guide groove is reserved on the bottom surface of a pump inner cavity between the upper portion of a right wall of a low pressure oil cavity and the inner wall of the pump inner cavity. Seven axial through grooves on the outer wall of the outer rotor are distributed at central radial positions of inner wall tooth sections of the outer rotor. When the inner rotor and the outer rotor rotate, fuel flows along the transverse guide groove and the axial through grooves to positions to be lubricated. An oil film is formed between the outer wall of the outer rotor and the inner wall of the pump inner cavity, the outer rotor cannot be contacted with the fuel delivery pump directly under the action of liquid surface tension, the outer rotor is floated in the fuel delivery pump body, and accordingly friction between the outer rotor and the fuel delivery pump body is avoided, and the service life of the fuel delivery pump is prolonged. The fuel delivery pump with the suspended cycloid rotor is stable in operation, low in pulsating, low in noise and high in volume efficiency, and is applicable to automotive diesel engine fuel injection systems.

The invention discloses an oil-gas separator of an automobile diesel comprising a lower cavity 1, a filter element 3, an upper air accumulation housing 2 and an upper cover 5, wherein the lower cavity is connected with a mixed gas inlet adapter 11, and the bottom of the lower cavity 1 is provided with an oil outlet 12; the upper air accumulation housing 2 is connected with an outlet adapter 21; the filter element 3 is composed of a filter body 31 and a filter body bracket 32, wherein the filter body 31 surrounds the filter body bracket 32; the axial line of the inner tube wall of the mixed gas inlet adapter 11 is tangent with the circumference of the inner wall of the lower cavity; the upper air accumulation housing 2 is set in a mode that an upper bottle cap cylinder 22 and a lower bottle cap cylinder 23 are staggered and overlapped, and the inner space of the overlapped part is communicated. The invention has the advantages that the oil-gas separator can lower internal pressure of a crank case, recovers engine oil contained in gas emitted out of the crank box; the automobile emission technical standard thereof can reach European IV standard, so that the automobile protects environment, saves more energy as much as possible and is more favourable for alleviating energy shortage and protecting environment.

Embodiments of the present invention include methods and devices for trapping particulate matter suspended in exhaust from, for example, automotive diesel engines. Particulates carried in exhaust are actually a colloidal suspension of finely divided particulates in a fluid (in this case, the exhaust gases). This colloidal mixture is channeled through an open spiral exhaust channel. The particulates will differentially tend to travel through the fluid in a straight line, which leads them to collide with a fine mesh or porous material that defines the open spiral exhaust channel. The gas, on the other hand, will easily traverse the spirally shaped exhaust channel, with its molecules bouncing around the curved path of the spiral. Continuing through the device, more and more particulates will build up in the surrounding meshwork or porous material.

The invention relates to an automobile exhaust emission purification treatment fluid. The automobile exhaust emission purification treatment fluid is prepared from the following raw materials in parts by weight: trisodium phosphate, polyethylene glycol, industrial carbamide, sodium silicate, ethidene diamine, triethanolamine, glycerol, vanadium pentoxide, AEO-9, industrial salt, ethylene glycol, a macromolecular composite synergistic agent and water. The treatment fluid can be used for catalyzing nitric oxides discharged by automotive diesel engines and quickly decomposing the nitric oxides in the presence of a surface activity catalyst, thereby achieving the practical effect of purifying the emission at any time. By adopting the treatment fluid, the exhaust finally discharged in the air can reach the national standard; meanwhile, the treatment fluid is strong in adaptability and excellent in anti-freezing effect, so that the use effect of the treatment fluid at low-temperature state of severe cold areas is still not influenced.

The invention discloses a double-cylinder in-line type fuel feed pump which has a simple structure and is easy to manufacture. The fuel feed pump comprises a double-cylinder in-line type fuel feed pump, wherein a cam shaft of a double-cylinder in-line type fuel feed pump body is provided with a fuel path group with two groups of mutually independent cam mechanisms; the fuel path group communicates the two groups of cam mechanisms; the two groups of cam mechanisms are fixed on the cam shaft of the pump body through an eccentric wheel; the eccentric circle of the two groups of cam mechanisms is formed in a direction opposite to the radial direction of an eccentric circle on the cam shaft; and a valve seat which is shared by a fuel inlet ball valve and a fuel outlet ball valve is also arranged above a cam structure. The fuel feed pump has the characteristics that: one valve seat is shared by the two valves; a fuel outlet valve conical surface is machined at the upper end of the valve seat; a fuel inlet valve conical surface is machined at the lower end of the valve seat; and the fuel outlet valve conical surface is connected with the fuel inlet valve conical surface through fuel holes in the middle respectively. High-pressure fuel is not concentrated in the pump body, but the fuel is fed to a high-pressure common rail pipe of a diesel engine by directly using two high-pressure fuel pipes, so that the structure of a high-pressure common rail pump is greatly simplified, the manufacturing cost is reduced, and a high-pressure common rail fuel system can be conveniently applied to a light automobile diesel engine.

The invention discloses a diagnostic method and device for particulate matter discharging for a novel external automotive diesel engine. The device comprises a control unit (DCU) and a sensor unit connected with the DCU. The sensor unit is used for collecting current values and comprises an ionization electrode and a signal electrode. The ionization electrode is partly wrapped with a high-temperature-resistant insulating ceramic tube. The high-temperature-resistant insulating ceramic tube is partly wrapped with insulating seal gum and is partly wrapped with a common insulating ceramic tube. An ionization area is formed by the common ceramic tube, the ionization electrode and a grounding shielding shell. The ionization area is communicated with a sampling channel through an inlet of the ionization area and is communicated with the atmosphere through a hole communicated with the atmosphere, and the sampling channel is communicated with an exhaust pipe through an exhaust sampling opening. According to the diagnostic method and device for particulate matter discharging for the novel external automotive diesel engine, the influences of the severe environment in the exhaust pipe of the diesel engine are avoided, the structure is simple, precision is high, the measuring range is large, and particulate discharging can be effectively diagnosed and measured.

The invention relates to an automobile diesel engine injector, in particular to a dual-fuel injector, and belongs to the technical field of automobile diesel engine injectors. The dual-fuel injector comprises a gas nozzle and a gas nozzle screw cap, and the gas nozzle is arranged at the lower end of a fuel nozzle; an outer ring of the gas nozzle is provided with the gas nozzle screw cap; the gas nozzle screw cap is connected with the lower end of a fuel injector body through threads, and the gas nozzle is compressed on the fuel nozzle; the side face of the fuel injector body is provided with an air inlet, and the lower end face of the fuel injector body is provided with a circle of diffusion cell in the circumferential direction; the fuel injector body is internally provided with an air inlet channel which communicates with the air inlet and the diffusion cell; the fuel nozzle is internally provided with a plurality of up-and-down through nozzle airways, and the upper end of each nozzle airway communicates with the diffusion cell; and the lower end of each nozzle airway communicates with an air nozzle. The structure of the dual fuel injector is simple, compact and rational, and thepurpose of reducing emissions can be achieved; diesel can be burnt fully, and the emission of soot is reduced; and the requirements of different customers at different areas can be met according to such conditions as price change, reserve distribution and convenience of fuel and gas.

Reformulated diesel fuels for automotive diesel engines which meet the requirements of ASTM 975-02 and provide significantly reduced emissions of nitrogen oxides (NOx) and particulate matter (PM) relative to commercially available diesel fuels.

The invention provides a diaphragm pump device. The diaphragm pump device is provided with the body forming an outline, and having an opening at an end, the diaphragm closing the opening of the body, and forming a pumping chamber in the body, a cover member installed at the opposite side to the diaphragm and forming an atmospheric chamber inside. The body and the cover member are fastened with a screw to hold the diaphragm narrowly. A corotation preventing member is interposed in the narrow position of the diaphragm with the body and the cover member.

The invention relates to a thermal insulation device of an automobile diesel oil pipe. The thermal insulation device comprises a vehicle-mounted power supply, first flow valves, an oil pipe, a thermal insulation circular pipe, a water tank, a cooling water pump, a cooling water pipe, a temperature sensor, an automobile controller, a heating resistance wire and a second flow valve, wherein the thermal insulation circular pipe is arranged on the outer side of the oil pipe, the heating resistance wire and the temperature sensor are placed between the thermal insulation circular pipe and the oil pipe, the cooling water inlet and outlet ends of the thermal insulation circular pipe is connected with the cooling water pipe, so as to form a cooling water pipeline, both ends of the cooling water pump are arranged in the cooling water pipeline, and the first flow valves are arranged on the cooling water pipe which is close to both ends of the thermal insulation circular pipe; the left side of the water tank is connected with the cooling water pipe, the right side of the water tank is connected with a cooling pipe in a diesel cooling system, and the left side and the right side of the water tank are communicated by virtue of the second flow valve; the vehicle-mounted power supply, the first flow valves, the second flow valve, the cooling water pump, the temperature sensor and the heating resistance wire are connected with the automobile controller. By using the thermal insulation device, the thermal insulation effect of the diesel oil pipe is effectively guaranteed, and the oil work efficiency is improved.

The invention discloses a waste heat distillation drinking device of an automotive diesel engine. The waste heat distillation drinking device comprises a vaporizer, a condensation water tank and a water dispenser. The vaporizer comprises a connecting straight pipe and a spiral pipe. The inner wall of the connecting straight pipe is provided with a spiral groove matched with the spiral pipe, and the spiral pipe is screwed into the spiral groove. The outer wall of the connecting straight pipe is provided with two hollow cylindrical bosses, through holes of the cylindrical bosses are communicated with the spiral groove, the two ends of the spiral pipe are connected with a connecting welding pipe in a sealing mode, and a water inlet and a steam outlet are formed by the connecting welding pipe and the cylindrical bosses. The condensation water tank is provided with a water outlet, and internally provided with a condenser pipe. The water inlet of the vaporizer is connected with the water outlet of the condensation water tank, the steam outlet of the vaporizer is connected with the steam inlet end of the condenser pipe, and the water outlet end of the condenser pipe is connected with the water dispenser. The drinking device effectively utilizes the waste heat of the engine for vaporizing water, after condensation, clean and sanitary distilled water is obtained to be drunk by people, energy resources are saved, and the emission heat of automobiles is reduced.

Reformulated diesel fuels for automotive diesel engines which meet the requirements of ASTM 975-02 and provide significantly reduced emissions of nitrogen oxides (NOx) and particulate matter (PM) relative to commercially available diesel fuels.

The invention relates to an automobile exhaust emission purification treatment fluid. The automobile exhaust emission purification treatment fluid is prepared from the following raw materials in parts by weight: trisodium phosphate, polyethylene glycol, industrial carbamide, sodium silicate, ethidene diamine, triethanolamine, glycerol, vanadium pentoxide, AEO-9, industrial salt, ethylene glycol, a macromolecular composite synergistic agent and water. The treatment fluid can be used for catalyzing nitric oxides discharged by automotive diesel engines and quickly decomposing the nitric oxides in the presence of a surface activity catalyst, thereby achieving the practical effect of purifying the emission at any time. By adopting the treatment fluid, the exhaust finally discharged in the air can reach the national standard; meanwhile, the treatment fluid is strong in adaptability and excellent in anti-freezing effect, so that the use effect of the treatment fluid at low-temperature state of severe cold areas is still not influenced.

The invention relates to a car diesel engine controller which comprises an upper cover plate and a lower cover plate that are fixed with each other, and a control circuit board fixed in a cavity consisting of the upper cover plate and the lower cover plate, wherein the upper cover plate is fixed with an atmospheric pressure inducing device and at least one socket connector, four corners of the upper cover plate are all provided with mounting holes, the socket connector comprises a column socket and a pin fixed in the socket, the pin passes through the upper cover plate and is welded and fixed on the control circuit board, the upper cover plate is provided with a lug boss used for protecting the atmospheric pressure inducing device, one side of the lug boss is provided with a channel groove, the atmospheric pressure inducing device is fixed into the groove, and the end face of the upper cover plate is provided with a radiating structure. Compared with the prior art, the invention has the characteristics of light weight, small volume, better radiation, better insulation and shock absorption, and the like.

The invention discloses an environment-friendly sand treatment storage and transportation system for automotive diesel engine engine-body cylinder head castings. The environment-friendly sand treatment storage and transportation system for automotive diesel engine engine-body cylinder head casting comprises a large capacity and high-efficiency bucket type elevator, a fine hexagonal sieve, a belt type conveyor, a packaging tape feeding machine, a suspended belt type permanent magnet separator, a disc feeding machine, a screw feeding machine, a vibration conveyor, a powder boiling type low-pressure pneumatic conveyor and a dust removal system. The environment-friendly sand treatment storage and transportation system for the automotive diesel engine engine-body cylinder head castings meets the national environmental protection and dust noise emission standards. The dust emission concentration is not more than 50 mg / m<3>, and the noise emission of a draught fan is less than or equal to 85db (A).

The invention discloses a water cooling system for an automobile diesel engine, comprising a diesel engine (1), a cooling liquid pump (2), a temperature control valve (3), a cooling liquid cooler (4), a bypass pipe (5) and a lubricating oil cooler (6), filter (7), lubricating oil pump (8) and supercharged intake air cooler (9), the diesel engine is connected to the coolant cooler through the coolant pump, and there is a A temperature control valve is provided, and the temperature control valve is connected with the cooling liquid cooler through a bypass pipe. One end of the cooling liquid cooler (4) is connected with a lubricating oil cooler (6), and the lubricating oil cooler (6) is respectively It is connected with the supercharged intake air cooler (9), the diesel engine (1) and the filter (7). One end of the filter (7) is connected with a lubricating oil pump, and one end of the lubricating oil pump is connected with the diesel engine. connected to the diesel engine. The invention adopts the water cooling system of the automobile diesel engine, the structure design is reasonable, and the water cooling effect is good.

The invention relates to a system for preheating fuel oil of an automotive diesel engine in winter and a control method of the system. The system is characterized in that an electric three-way valve I is arranged on a connecting pipeline of a fuel feed pipe of an engine, a main fuel feed pipe of a main fuel tank and an auxiliary fuel feed pipe of an auxiliary fuel tank, an electric three-way valve II is arranged on a connecting pipeline of an oil return pipe of the engine, a main oil return pipe of the main fuel tank and an auxiliary oil return pipe of the auxiliary fuel tank, an electric three-way valve III is arranged on a connecting pipeline of a warm-wind water inlet pipe, a water return pipe of an aluminum heating pipe, and a water inlet pipe of a liquid heater, an ECU (Electronic Control Unit) and the liquid heater are supplied with power through a storage battery, a power supply circuit is connected and disconnected by an automotive key switch, a time-delay relay is arranged on the power supply circuit, and a temperature sensor I of the engine, a temperature sensor II in the main fuel tank, the liquid heater and the electric three-way valves I, II and III are respectively connected with the ECU by leads for realizing automatic control. With the fuel oil preheating system provided by the invention, the normal working of the automotive diesel engine with No.0 diesel oil in winter can be realized, and enormous economic benefits are brought to an automobile owner.

The invention relates to the field of manufacturing of automobile diesel engines, in particular to an oil circuit for an oil pump and a diesel-powered motor vehicle. The oil circuit for the oil pump is used for a light-duty diesel engine and comprises an oil tank, an oil transfer pump and a common-rail pipeline which are communicated in sequence. The common-rail pipeline is communicated with an oil return pipe, and the end, away from the common-rail pipeline, of the oil return pipe is communicated with the oil tank; the oil transfer pump comprises a lubricating pipeline and a plunger pump which is communicated with the oil transfer pump, and the lubricating pipeline is used for lubricating the plunger pump; the oil transfer pump further comprises a pump inner cavity which is used for collecting leak oil in the plunger pump and lubricating oil of the plunger pump, and the pump inner cavity is communicated with the oil return pipe. By means of the oil circuit for the oil pump, the stability and the precision of the oil mass can be ensured, the load of the oil transfer pump is reduced, and the oil feeding capacity and the reliability of the oil transfer pump at the low rotational speed are improved.

The invention discloses a method for preparing a high-strength piston material for an automobile diesel engine. The chemical composition and mass percentage composition of the piston material are: 24.5%-26% of samarium, 6.5%-8% of tin, 52%-56% of nickel, Titanium 7.5%‑12%, the rest is iron.

The invention relates to a calibration device for a high-precision automobile diesel engine tachometer, the device is connected with the diesel engine tachometer, the calibration device includes a interconnected microprocessor subsystem and a diesel engine rotational speed signal simulation subsystem, the described The diesel engine speed signal simulation subsystem is connected with the diesel engine tachometer; the microprocessor subsystem sends the control signal to the diesel engine speed signal simulation subsystem, and the diesel engine speed signal simulation subsystem generates a high-precision signal for simulating the operation of the diesel engine according to the control signal source, and provided to the diesel engine tachometer. Compared with the prior art, the present invention has the advantages of solving technical difficulties in calibrating diesel engine tachometers, realizing a fast, accurate and convenient calibrating process, and being affirmed and popularized for its excellent performance in practical applications.

The invention belongs to the technical field of auto parts, and relates to a fuel delivery pump with a floated cycloid rotor. The fuel delivery pump with the suspended cycloid rotor comprises a fuel delivery pump body, an outer rotor, an inner rotor and a universal joint. The fuel delivery pump body is in an integral structure. A transverse guide groove is reserved on the bottom surface of a pump inner cavity between the upper portion of a right wall of a low pressure oil cavity and the inner wall of the pump inner cavity. Seven axial through grooves on the outer wall of the outer rotor are distributed at central radial positions of inner wall tooth sections of the outer rotor. When the inner rotor and the outer rotor rotate, fuel flows along the transverse guide groove and the axial through grooves to positions to be lubricated. An oil film is formed between the outer wall of the outer rotor and the inner wall of the pump inner cavity, the outer rotor cannot be contacted with the fuel delivery pump directly under the action of liquid surface tension, the outer rotor is floated in the fuel delivery pump body, and accordingly friction between the outer rotor and the fuel delivery pump body is avoided, and the service life of the fuel delivery pump is prolonged. The fuel delivery pump with the suspended cycloid rotor is stable in operation, low in pulsating, low in noise and high in volume efficiency, and is applicable to automotive diesel engine fuel injection systems.

The invention discloses a preparation method of a high-strength piston material of an automobile diesel engine.The piston material is prepared from, by mass, zirconium 24.5%-26%, rhodium 6.5%-8%, nickel 52%-56%, palladium 7.5%-12% and the balance iron.

The invention discloses a preparation method of a high-strength piston material of an automobile diesel engine.The piston material is prepared from, by mass, samarium 24.5%-26%, bismuth 6.5%-8%, aluminum 52%-56%, palladium 7.5%-12% and the balance iron.

The invention discloses a preparation method of a high-strength piston material of an automobile diesel engine.The piston material is prepared from, by mass, zirconium 24.5%-26%, lanthanum 6.5%-8%, aluminum 52%-56%, osmium 7.5%-12% and the balance iron.