Engine with adjustable DEGR system

A technology of engine and EGR valve, which is applied in the direction of engine components, machines/engines, charging systems, etc., can solve the problems such as the inability to realize the EGR rate, and achieve the effects of good power, good fuel economy and good application prospects

Inactive Publication Date: 2017-11-24
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

[0007] In these patented products, the EGR exhaust gas rate is subject to the pressure difference of the engine intake and exhaust system, because of the characteristics of the engine intake and exhaust system, it is impossible to achieve a higher EGR rate

Method used

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  • Engine with adjustable DEGR system

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Embodiment Construction

[0020] The specific implementation manner of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings.

[0021] The engine with adjustable DEGR system of the present invention, such as figure 1 As shown, it includes an intake system and an exhaust system. The intake system includes an intake main pipe and an intake manifold 4 connected to each cylinder respectively. The cylinder is divided into a first cylinder and a second cylinder. The exhaust system includes the first cylinder and the second cylinder. The first exhaust manifold 5 communicated with one cylinder and the second exhaust manifold communicated with the second cylinder, the bottom of the second exhaust manifold is provided with a control exhaust gas selectively communicated with the supercharger turbine 9 or the intake system control valve. The adjustable DEGR system can control the direction of the exhaust gas in the second manifold...

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Abstract

The invention discloses an engine with an adjustable DEGR system, which includes an intake system and an exhaust system. The intake system includes a main intake pipe and an intake manifold connected to each cylinder respectively. The cylinders are divided into The first cylinder and the second cylinder, the exhaust system includes a first exhaust manifold communicated with the first working cylinder and a second exhaust manifold communicated with the second cylinder, the second exhaust manifold communicates Below is a control valve that controls the choice of exhaust gas to be routed to the supercharger turbine or the intake system. The engine with the adjustable DEGR system of the invention has a simple principle and is easy to realize in terms of structure, has high EGR rate, good fuel economy, good power performance, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and more specifically relates to an engine with an adjustable DEGR system. Background technique [0002] Due to increasingly stringent laws and regulations, the requirements for engine fuel consumption and emissions are getting higher and higher. The application of EGR technology has become an important technical means to reduce fuel consumption and emissions of today's gasoline engines. It not only significantly reduces NOx emissions, but also Improved engine combustion economy. [0003] On a naturally aspirated gasoline engine, the introduction of EGR is not a problem. The exhaust pressure is higher than the intake pressure, and the exhaust gas can easily enter the cylinder for recirculation. But the intake air pressure in the manifold of a supercharged engine is less than atmospheric pressure at low load and above atmospheric pressure at high load. EGR systems on supercharged engines can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/05F02M26/42F02M26/39F01N3/10F01N13/00
CPCF02M26/05F01N3/105F01N13/0093F02M26/39F02M26/42
Inventor 金晖王伟陈伟国李玉琦
Owner CHERY AUTOMOBILE CO LTD
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