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Outside waste gas recirculation system and operating method thereof

A recirculation system and exhaust gas technology, applied in the direction of exhaust gas recirculation, charging system, electrical control, etc., can solve the problem of low EGR rate, achieve the effect of increasing EGR rate, stable combustion, and reducing fuel consumption

Pending Publication Date: 2018-09-07
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide an external exhaust gas recirculation system and its working method to solve the problem of low EGR rate of the existing external exhaust gas recirculation system and its working method

Method used

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  • Outside waste gas recirculation system and operating method thereof
  • Outside waste gas recirculation system and operating method thereof

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Embodiment Construction

[0074] The external exhaust gas recirculation system and its working method proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating an embodiment of the present invention.

[0075] refer to figure 2 , the present embodiment provides an external exhaust gas recirculation system, which includes an engine 10 , an intake system 20 , an exhaust system 30 , a gasoline supply system 40 , a natural gas supply system 50 and a single-cylinder EGR system 60 . In addition, the external exhaust gas recirculation system further includes a multi-cylinder EGR system 70 , and the multi-cylinder EGR system 70 cooperates with...

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Abstract

The invention provides an outside waste gas recirculation system and an operating method thereof. The outside waste gas recirculation system comprises an engine, a gasoline supply system, a single-cylinder EGR system, a multi-cylinder EGR system and a natural gas supply system. The engine comprises at least two cylinders, one of the cylinders is a combined combustion cylinder, at least one of thecylinders is a gasoline cylinder, and the combined combustion cylinder combusts a thick mixture of gasoline and natural gas; the gasoline supply system supplies gasoline to all the cylinders; the natural gas supply system supplies natural gas to the combined combustion cylinder; the single-cylinder EGR system is connected with an air vent of the combined combustion cylinder and air inlets of all the cylinders; and the multi-cylinder EGR system is connected with air vents of all the gasoline cylinders and the air inlets of all the cylinders. By means of the outside waste gas recirculation system and the operating method thereof, stable combustion with the EGR rate of 25%-50% is achieved, and oil consumption of the engine is reduced.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an external exhaust gas recirculation system and a working method thereof. Background technique [0002] The development of high-efficiency and low-fuel-consumption gasoline engines is an important issue faced by the automobile industry. The main factors restricting the improvement of gasoline engine thermal efficiency at low load include high pumping loss, low geometric compression ratio, and low specific heat ratio of the mixture. For high loads, knocking combustion is the main obstacle leading to low thermal efficiency of gasoline engines. One of the technical routes to simultaneously improve the low-load and high-load thermal efficiency of gasoline engines is to cool the exhaust gas discharged from the engine and re-enter the cylinder to participate in combustion, that is, the exhaust gas recirculation technology. [0003] figure 1 It is a schematic structural diagram of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/43F02M26/38F02M26/16F02M26/21F02M26/35F02M26/25F02B69/04F01N13/08F02M21/02F02D41/00F02D41/30F02D21/08F02D19/06F02D19/08
CPCF01N13/082F02B69/04F02D19/0647F02D19/08F02D21/08F02D41/0025F02D41/0027F02D41/0077F02D41/0082F02D41/30F02M21/0215F02D2021/083Y02T10/30
Inventor 苏建业习纲陈宇清李君
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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