egr system with particulate filter for petrol engine
A particle filter and gasoline engine technology, applied in the field of EGR system, can solve the problems of not being suitable for gasoline engines, etc., and achieve the effects of improved anti-knock performance, low pollution, and improved combustion
Active Publication Date: 2020-11-27
TENNECO GMBH
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Problems solved by technology
Since ammonia is not required as a reducing agent for NOx reduction in sustained stoichiometric or rich-burn gasoline engines, according to figure 1 In the embodiment, it can be considered to use the AMOX catalytic converter in the exhaust gas recirculation pipe to oxidize the excess ammonia, but this is not suitable for gasoline engines
Method used
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Embodiment Construction
[0111] according to figure 1 In all schematic diagrams up to FIG. 6 , the invention discloses an exhaust gas recirculation system 1 (EGR system) integrated into the exhaust and intake system of a gasoline engine 2 . The gasoline engine includes a displacement 2.4, an exhaust manifold 2.1 and an intake manifold 2.2, and also includes an exhaust gas turbine 3 and an intake air compressor 4. The exhaust and intake system has an exhaust pipe 1.1 connected to an exhaust manifold 2.1 of an Otto engine 2 into which the turbine 3 is integrated. At the end of said exhaust pipe 1.1, the exhaust gas 8 leaves the exhaust gas recirculation system 1 and flows further into an exhaust branch (not shown). At the same time, it also includes an intake pipe 1.2 connected to the intake manifold 2.2 of the gasoline engine 2, and the compressor 4 is integrated in the intake pipe 1.2. The air intake pipe 1.2 inputs fresh air 7 (not shown) through an air delivery system. In addition, at least one e...
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An exhaust gas system for a gasoline engine with an exhaust gas pipe connectible to an outlet manifold, with an inlet pipe connectible to an inlet manifold, whereas a main exhaust catalyst is provided within the exhaust gas pipe wherein at least one first exhaust gas recirculation pipe is provided which branches off from the exhaust gas pipe and ends in the inlet pipe, whereas at least one particle filter is positioned within the first exhaust gas recirculation pipe and / or within the exhaust gas pipe upstream of the first exhaust gas recirculation pipe, wherein optionally at least a second exhaust gas recirculation pipe is provided, whereas at least one particle filter is provided which is positioned within the second exhaust gas recirculation pipe and / or which is positioned within the exhaust gas pipe upstream of the second exhaust gas recirculation pipe.
Description
technical field [0001] The present invention relates to an exhaust gas recirculation system (EGR system) for a gasoline engine comprising an exhaust pipe attachable to an exhaust manifold and an intake pipe attachable to an intake manifold, which also includes An optional Exhaust Gas Turbocharger (EGT) to have a turbo in the exhaust pipe. At least one compressor is arranged in the intake duct. Wherein, if EGT is provided, at least one exhaust gas return pipe_I is required, which branches on the exhaust pipe upstream of the turbine and communicates with the intake pipe downstream of the compressor to jointly form a high pressure EGR pipe; and / or comprising at least one exhaust gas return pipe_II, which branches on the exhaust pipe downstream of the turbine and communicates with the intake pipe upstream of the compressor to jointly form a low-pressure EGR pipe . Among them, the main exhaust gas catalytic converter is also included in the exhaust pipe. [0002] The invention ...
Claims
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IPC IPC(8): F02M26/05F02M26/06F02M26/15F02M26/23F02M26/35F02M26/42F02M26/43F02D41/00F02P5/15
CPCF02D41/00F02D41/0065F02M26/05F02M26/06F02M26/15F02M26/23F02M26/35F02M26/42F02M26/43F02P5/1516F02M26/04F01N3/2066
Inventor M·费歇尔
Owner TENNECO GMBH