35 results about "Vehicle emissions control" patented technology

A compact, hybrid particulate and gas collector that can be used in a vehicle emissions control system, gas turbine, or in any other application where space and lower cost is important or in applications where sub-micron and nano-particulate filtering is needed. A gas flow enters the device in a first chamber and can be immediately exposed to a high-tension corona discharge electric field which typically results in a strong ionic flow by charging and collecting the incoming effluent (oil mist, soot particles, etc.). Subsequently, the charged flow enters a second zone of high-tension uniform electric field that causes the remaining charged particles to migrate to one of the charged electrodes. One of the electrodes can be made of porous filter material that allows the cleaned gas to flow into an exit zone also containing a high-tension uniform electric field where the remaining effluent can be collected prior to the clean gas exiting either to ambient air or being re-circulated to be used again by the engine. In some embodiments a dielectric barrier discharge surface can be provided to convert harmful compounds to more desirable substances. Alternate embodiments can include a third zone containing a second substantially uniform electric field as well as coating the porous surface with a catalyst to convert undesirable compounds. Any cross-section may be used.

A compact, hybrid particulate and gas collector that can be used in an ultra-clean air purification, vehicle emissions control system, gas turbine, or in any other application where space and lower cost is important or in applications where sub-micron and nano-particulate filtering is needed such as in clean rooms and surgical suites. A gas flow enters the device in a first chamber and can be immediately exposed to a high-tension corona discharge electric field which typically results in a strong ionic flow by charging and collecting the incoming effluent (oil mist, soot particles, etc.). Subsequently, the charged flow enters a second zone of high-tension uniform electric field that causes the remaining charged particles to migrate to one of the charged electrodes. One of the electrodes can be made of porous filter material that allows the cleaned gas to flow into an exit zone also containing a high-tension uniform electric field where the remaining effluent can be collected prior to the ultra-clean gas exiting either to ambient air or being re-circulated to be used again by the engine. In some embodiments a dielectric barrier discharge surface can be provided to convert harmful compounds to more desirable substances. Alternate embodiments can include a third zone containing a second substantially uniform electric field as well as coating the porous surface with a catalyst to convert undesirable compounds. Any cross-section of the device may be used. Further treatment of the dust free flow with ultraviolet light, an x-ray or a radiation can be used to kill micro-organisms.

Provided is a novel continuous single-step method of manufacturing a multilayer sorbent polymeric membrane having superior productivity, properties and performance. At least one layer of the polymeric membrane comprises sorbent materials and a plurality of interconnecting pores. The method includes: (a) coextruding layer-forming compositions to form a multilayer coextrudate; (b) casting the coextrudate into a film; (c) extracting the film with an extractant; and (d) removing the extractant from the extracted film to form the multilayer sorbent polymeric membrane. The sorbent membrane of this disclosure can find a wide range of applications for use in filtration, separation and purification of gases and fluids, CO2 and volatile capture, structural support, vehicle emission control, energy harvesting and storage, device, protection, permeation, packaging, printing, and etc.

The invention relates to systems and methods for heating a solid or liquid reducing material such as an urea-containing material for NOx selective catalytic reduction (‘SCR’) using a heat stored in a thermal energy storage material, such as a phase change material. The stored heat may be heat from an exhaust waste, such as from an exhaust gas of an internal combustion engine. The reducing material may be a solid reducing material. Other reducing materials include aqueous solutions such as an aqueous solution containing, consisting essentially of, or consisting of urea and water. In one aspect, the process may include a step of evaporating an aqueous solution of urea for immediate urea hydrolysis.

A compact, hybrid particulate and gas collector that can be used in a vehicle emissions control system, gas turbine, or in any other application where space and lower cost is important or in applications where sub-micron and nano-particulate filtering is needed. A gas flow enters the device in a first chamber and can be immediately exposed to a high-tension corona discharge electric field which typically results in a strong ionic flow by charging and collecting the incoming effluent (oil mist, soot particles, etc.). Subsequently, the charged flow enters a second zone of high-tension uniform electric field that causes the remaining charged particles to migrate to one of the charged electrodes. One of the electrodes can be made of porous filter material that allows the cleaned gas to flow into an exit zone also containing a high-tension uniform electric field where the remaining effluent can be collected prior to the clean gas exiting either to ambient air or being re-circulated to be used again by the engine. In some embodiments a dielectric barrier discharge surface can be provided to convert harmful compounds to more desirable substances. Alternate embodiments can include a third zone containing a second substantially uniform electric field as well as coating the porous surface with a catalyst to convert undesirable compounds. Any cross-section may be used.

The invention discloses a monitoring system and method for a vehicle emission control aftertreatment device. The monitoring system comprises a pressure difference sensor, a temperature sensor, a sampling unit, a control unit, a server and a monitoring terminal, the input end of the sampling unit is connected with the pressure difference sensor and the temperature sensor, and the output end of the sampling unit is connected with the control unit. The control unit comprises a data processing chip, an OBD communication module, a wireless communication module, a GPS module and a display module, the data processing chip is connected with the OBD communication module, the wireless communication module, the GPS module and the display module, and the OBD communication module is connected with a vehicle OBD interface. The data processing chip is connected with the server through the wireless communication module, and the monitoring terminal is connected with the server. The monitoring system can serve as a basis of the government for treating motor vehicle pollution and punishing illegal emissions, a driver is supervised and urged to normatively use a vehicle, and pollutant emissions are reduced.

Provided is a novel continuous single-step method of manufacturing a multilayer sorbent polymeric membrane having superior productivity, properties and performance. At least one layer of the polymeric membrane comprises sorbent materials and a plurality of interconnecting pores. The method includes: (a) coextruding layer-forming compositions to form a multilayer coextrudate; (b) casting the coextrudate into a film; (c) extracting the film with an extractant; and (d) removing the extractant from the extracted film to form the multilayer sorbent polymeric membrane. The sorbent membrane of this disclosure can find a wide range of applications for use in filtration, separation and purification of gases and fluids, CO2 and volatile capture, structural support, vehicle emission control, energy harvesting and storage, electrolyte batteries, device, protection, permeation, packaging, printing, and etc.

The invention relates to a dielectric barrier discharge low-temperature plasma harmful gas conversion device, which belongs to the technical field of industrial waste gas and motor vehicle harmful emissions control. The low-temperature plasma reactor (7) of the present invention is a coaxial tubular dielectric barrier discharge low-temperature plasma reactor, consisting of a central low-voltage electrode (17), a quartz medium (15) coaxial with it, and a high-voltage electrode wrapped on the outer wall of the medium. Electrode (16), Teflon connecting rod (14), front end cover (11), rear end cover (18), front end cover air inlet port (10), rear end cover air outlet port (19) and optional inlet 1. The exhaust interface (20), the gap between the outer wall of the central low-voltage electrode (17) and the inner wall of the quartz medium (15) forms a low-temperature plasma reaction zone. The invention has high treatment efficiency, no secondary pollution, no need for follow-up treatment, simple equipment and easy operation, and is suitable for the treatment of NO, CO, HC, H2S, PM and other harmful substances.

A vehicle emission control system is configured to operatively receive exhaust gas from a combustion engine and includes an exhaust gas after treatment system (EATS) configured to operatively clean the received exhaust gas, a burner unit configured to operatively heat the received exhaust gas to a predetermined temperature before the exhaust gas is provided to the EATS, and a pump unit configured to operatively provide the burner unit with air to be used b the burner unit in a heating process. The pump unit is configured to be operatively propelled by exhaust gas, and the burner unit is arranged upstream the pump unit such that exhaust gas from the burner unit is operatively provided to the pump unit for propelling the pump unit.

The invention discloses a vehicle emission model modeling method suitable for intelligent network connection vehicle emission control, and belongs to the technical field of intelligent control. The invention aims at providing the vehicle emission model modeling method suitable for intelligent network connection vehicle emission control, which is used for connecting a vehicle with an engine throughdriving power and is suitable for controlling different control targets such as oil consumption and emission of the vehicle in an intelligent network connection environment. The method comprises thesteps of an engine rotating speed module (1), a vehicle power module (2), a fuel consumption rate module (3) and an emission module (4). From the perspective of an upper-layer vehicle, the vehicle isassociated with an engine through driving power according to the state of the vehicle, an engine fuel consumption rate model is established according to the power, and then a linear model of the fuelconsumption rate and emission is fitted according to data. The model established through adoption of the modeling method is simple and high in accuracy, and the modeling method is suitable for being applied to control over different control targets such as oil consumption and emission of the vehicle in the intelligent networking environment.

A motor vehicle emission control system includes a three zone catalytic converter component having a honeycomb support body with catalytically active coating having a precious metal content applied on the channel walls. The first coating zone extends in the longitudinal direction from the inlet-side end to a first coating boundary and has a first precious metal content. The second coating zone extends in the longitudinal direction from the first coating boundary to a second coating boundary situated downstream from the first coating boundary and has a second precious metal content that is lower than the first precious metal content. The third coating zone extends from the second coating boundary to the outlet-side end and has a third precious metal content that is lower than the second precious metal content. The coating has oxidation catalyst activity and is free of rhodium.

Particulate filters are used to remove particulate matter such as soot and ash in the emissions control systems of vehicles, including gasoline direct injection (GDI) engines. Methods are provided to predict the long-term performance and durability of emissions control systems having particulate filters. The methods account for factors such as thermal aging, soot accumulation and regeneration, and ash loading.

A secondary air injection system to aid in the warm-up of a catalyst employed as part of an emissions control system of a vehicle to obtain efficient reduction in engine emissions. A compressor utilized to compress or boost air for increased engine performance is additionally used as a secondary air injection source, eliminating the need for external air pumps. The compressor is configured to transmit boosted air to the engine of the vehicle or to the catalyst to aid in the warm-up of the catalyst. A valve having an open configuration and a closed configuration controls the passage of the boosted air to the engine or to the catalyst. The valve may be controlled by a controller based upon airflow, temperature, pressure, or time. A control map relating engine speed to airflow may be used for obtaining airflow values for controlling the configuration of the valve.

In order to improve the control precision of a proportion valve of a launching vehicle under the condition of wide temperature range, the invention provides a single-machine control system of the launching vehicle. The single-machine control system comprises a proportion valve stand-alone digital control unit and a proportion valve unit, wherein the proportion valve unit drives missiles on a missile launching vehicle to generate actions of erecting, acquiring and / or positioning, the proportion valve stand-alone digital control unit comprises a control module, a power operational amplifier module and a current closed loop feedback module, the control module is used for generating a pulse width modulation signal according to a set current target value and a current feedback value, the power operational amplifier module is used for improving the power of the pulse width modulation signal so as to drive a proportion valve module, the current closed loop feedback module is used for processing the actual current output value of the proportion valve module and feeding the current feedback value to the control module. By experimental verification, the precision of 0.3% for controlling the proportion valve of the launching vehicle in the wide temperature range of minus 40DEG C to 60DEG C is realized.

In accordance with an exemplary embodiment, an emission control system and method is provided for a vehicle. The system comprises a reductant reservoir having an intake pipe for receiving reductant and a heater for heating the reductant. A pump provides the heated reductant to an injector and also to a conduit extending into the intake pipe to provide heated reductant into the intake pipe to melt any frozen reductant in the intake pipe. The method comprises heating reductant stored within a reservoir of a vehicle emission control system, and pumping the heated reductant into an intake pipe of the reservoir to melt any frozen reductant in the intake pipe.

The present invention relates to the technical field of motor vehicle emission control, and in particular to a method for monitoring the remaining amount of urea used in trucks with diesel engines. 1. Under the condition of a certain engine speed, based on the SCR front pressure sensor, SCR front nitrogen oxygen sensor, SCR rear pressure sensor, SCR rear nitrogen oxygen sensor to obtain the temperature and the SCR system front pressure P at the engine speed respectively A , nitrogen and oxygen content N A and the pressure P after the SCR system B , nitrogen and oxygen content N B . This method can not only correct the urea injection volume after the change of the solution in the urea tank, and make the injection volume of urea at different speeds and temperatures more accurate, but also correct the consumption of the solution in the urea tank after this change, avoiding the problem caused by the density of the solution. The calculation of the consumption caused by the change is very different, which can give a more accurate early warning of the remaining amount in the urea tank.