摘要:
An internal combustion engine system basically has an internal combustion engine, a reforming fuel injection device and a reformer. The internal combustion engine has an exhaust circulation path that is connected to an exhaust path and an intake path communicating with a combustion chamber. The reforming fuel injection device injects a reforming fuel into an exhaust gas flowing through the exhaust circulation path. The reformer has a reforming catalyst for generating a hydrogen-containing gas using the reforming fuel. The internal combustion engine system has a reforming catalyst regeneration device for causing an oxygen-containing gas to flow through the exhaust circulation path and thereby regenerate the reforming catalyst at a predetermined timing for regenerating the reforming catalyst.
摘要:
1,012,026. Treating exhaust gases; ejectors. W. EBERSPACHER and H. EBERSPACHER, [trading as J. EBERSPACHER]. May 25, 1962 [June 28, 1961], No. 20207/62. Headings FIB and F1E. A catalytic exhaust gas purifier 3, Fig. 1, has a thermostat controlling means for heating or cooling the catalyst to maintain its temperature within predetermined limits. In Fig. 1 the vehicle heater 9 has a fan 12 which normally blows air over a burner chamber 15 and through passage 17 into the vehicle 10. At starting the burner combustion products are diverted through passage 21 into the space around an injector 2 through which the engine exhaust gases flow. The combustion products are sucked into the injector along with heated air through passages 20, 19, and heat up the catalytic device, which comprises separate catalysing chambers 3...5. When a predetermined working temperature is reached the pipe 21 is closed and the valves 18b, 18a, are controlled automatically to vary the amount of air added to the exhaust gases and control the temperature of the catalytic devices, which may have pressure switches 6 ... 8 associated therewith to indicate blocking of the catalyst. In a modification, Fig. 2, a blower supplies air to a combustion chamber 24 of a heater controlled by the thermostat; the hot gases flowing to a space 26 around an exhaust pipe 30 leading to an injector 29 and flowing on through pipe 32a to a pipe 32 on which the catalyst is supported. Cold air to cool the exhaust gases is supplied through pipe 27b. In Fig. 3 the catalytic exhaust purifying device 41 is connected to the vehicle heater 56. The exhaust gases from injector 37 are drawn in, at starting, by a turbine 44a driven by an electric motor 54 and flow through space 39b, to heat the catalyst chamber, to the exhaust outlet 39c. The motor 54 also drives an air fan 47 which draws air through inlet 49b, and forces it over exhaust heated chamber 39b and through passage 53 and orifices 49a into chamber 64 which surrounds the main air heater device in which fuel injected by injector 62c on to a vaporizer 61 is burnt with air supplied by fan 53. The hot gases flow through annular heater 62a to heat the air flowing through channel 64, which air flows through exit c to heat the vehicle. Some of the hot gases are by-passed through pipe 63e to a valve 64 which, when open, directs the gases to inlet 63a 1 to heat the catalyser. A valve 38a 1 may also be opened to admit cool air from the passage 53 into the exhaust injector 37 to cool the catalytic device 41. In Fig. 6 a three stage engine driven compressor 82 supplies oxidizing air from stage 82a through pipe 90 to the exhaust pipe 84, combustion air from stage 82c through pipe 93 to a burner chamber 87, with fuel supply 88, when it is desired to heat the catalyser 85, and cooling air from stage 82b through pipe 92 when it is desired to cool the catalyser, the pipes 92, 93, being controlled by temperature responsive valves 92a, 93a. The exhaust injector 76, Fig. 7, associated with the entrance of the catalytic device may have a nozzle with starshaped section 76a to improve the mixing of the gases.
摘要:
A system is provided for supplying reductants to an emission treatment unit. The system comprises a fuel tank adapted to directly or indirectly supply a first premixed fuel stream and a second premixed fuel stream, wherein each fuel stream comprises a primary fuel component and an oxygenate reductant component. An engine is in fluid communication with the fuel tank, wherein the engine is configured to receive the first premixed fuel stream and create an exhaust stream. The system further includes an emission treatment unit to treat the exhaust stream. A separation unit is configured to receive the second premixed fuel stream, separate the second premixed fuel stream into a first fraction stream and a second fraction stream, and supply the first fraction stream to the emission treatment unit, wherein the first fraction stream comprises a higher concentration of the oxygenate reductant component than the second fraction stream.
摘要:
A SOx trap catalyst, an oxidation catalyst, a particulate filter, an aqueous urea supply valve, and a NOx selective reduction catalyst are arranged in order from upstream to downstream in an engine exhaust passage. It is determined whether a discharge concentration of hydrogen sulfide H2S will become equal to or greater than a preset maximum concentration when SOx is released from the SOx trap catalyst. If it is estimated that the discharge concentration of the hydrogen sulfide H2S will become equal to or greater than the maximum concentration when SOx is released, an adsorbed ammonia amount adsorbed on the NOx selective reduction catalyst is reduced before SOx is released so that the discharge concentration of the hydrogen sulfide H2S is less than the maximum concentration when SOx is released.
摘要:
System and method for supplying reductants to an emission treatment system. The system includes a fuel tank adapted to supply a premixed fuel stream that includes a primary component and a reductant component, and an engine in fluid communication with the fuel tank, wherein the engine is configured to create an emission. The engine includes an emission treatment system to treat the emission. The system also includes a separation system that includes a membrane with differential permeability for the reductant component relative to the primary component. The separation system is configured to receive at least a portion of the premixed fuel stream from the tank and to separate the premixed fuel stream into a first fraction and a second fraction. The first fraction includes a higher concentration of the reductant component than the second fraction, and the separation system is configured to supply the first fraction to the emission treatment system.
摘要:
To alleviate global warming while providing a liquid fuel to replace gasoline, apparatus and methods are disclosed for generating methanol from natural gas via the syngas route. Said apparatus and methods can also serve to dispose of any CO2 that is captured from fuel burning exhausts, especially from motor vehicle exhausts. With a proper choice of reagent ratios, the energy required for the methanol generation may derive from exothermic reactions yielding enough heat to make up for the endothermic reaction energy involved in steam reforming of natural gas, thus obviating the need for any substantial electric energy input. Although steam reforming of natural gas may yield a methanol-rich fuel that will outcompete gasoline by a wide margin, it would still fail by itself to significantly alleviate global warming. However, inclusion of captured CO2 in the proper ratio in the syngas reaction may yield an inexpensive conversion of said CO2 and natural gas to methanol or its derivatives without calling for any significant electric energy consumption. The preferred ratio is 1 mole of CO2 to 2 moles of H2O to 3 moles of CH4. These reagents may be introduced into a methanol synthesis reactor preferably maintained at about 250-300 C and 50-100 atm comprising a Cu—ZnO-alumina catalyst or its equivalent.
摘要:
A device for burning the unburnt constituents in the exhaust gases of a heat engine, for example a motor car engine, in which the exhaust gases, to which air may have been added, pass through an annular channel where sparks jump between an inner electrode and an outer electrode forming a wall of a combustion chamber. The annular channel is formed between the inner electrode and a conducting wall insulated electrically from the wall of the combustion chamber, the inner electrode being connected to the conducting wall by conducting vanes which impart a rotational movement to the gases in the annular channel, and the sparks jump in a restricted outlet of the annular channel located between the wall of the combustion chamber and a wider downstream part of the inner electrode.
摘要:
A controller is configured to control a vehicle that includes an internal combustion engine and an automatic transmission. The controller is configured to execute a shifting process that switches a gear ratio of the automatic transmission and a lean operation process that operates the internal combustion engine with an air-fuel ratio of the air-fuel mixture in a cylinder leaner than a stoichiometric air-fuel ratio. The controller is further configured to, when executing the shifting process during execution of the lean operation process, set an air-fuel ratio in a case in which the shifting process is being executed to a value closer to the stoichiometric air-fuel ratio than an air-fuel ratio in a case in which the shifting process is not being executed.
摘要:
An exhaust heat recovering device comprising an exhaust heat recovering tool (10) adapted to recover a heat of an exhaust gas of an internal combustion engine for a vehicle and an inflow side pipeline (14) and an exhaust side pipeline (13) adapted to connect the internal combustion engine and the exhaust heat recovering tool, wherein the inflow side pipeline (14) and the exhaust side pipeline (13) are mounted only on a component included in a non-vehicle body vibration system supported on a vehicle body (2) through an elastic body (4, 5, 6).