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Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method

A technology of exhaust gas recirculation and gasoline engine, applied in electrical control, engine control, mechanical equipment, etc., can solve the problems of engine fuel consumption increase, power decrease, combustion speed decrease, etc., and achieve the effect of reducing NOx emission level

Inactive Publication Date: 2008-01-02
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Exhaust gas recirculation (EGR) is used to reduce gasoline engine NO X One of the most effective means of emission, usually EGR is to introduce exhaust gas into the intake manifold, so once the amount of EGR increases, it will affect the power and economy of the engine, because there is too much exhaust gas in the mixture, and the exhaust gas around the spark plug will increase, which will not It is good for the gasoline engine to ignite, and the combustion speed is greatly reduced. Too much EGR is very unfavorable to the combustion of the mixture, which will increase the fuel consumption of the engine and reduce the power

Method used

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  • Apparatus for realiznig stratified exhaust recycle in cylinder for gasoline and its intake control method

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Embodiment

[0016] 1. Add a connecting plate with a thickness of about 15mm (as shown in Figure 2) between the engine intake manifold and the cylinder head. There are intake passages for each cylinder on the connecting plate. Drill a Ф12mm hole at the corresponding position of the intake passage of each cylinder, extend the EGR pipe leading to each cylinder from this hole, and shape it to reach the corresponding position. Weld the EGR pipe and the connecting plate firmly. The other ends of these EGR pipes are connected together with a thicker pipe called the EGR manifold.

[0017] 2. Connect the EGR main pipe to the exhaust pipe of the engine, and install a throttle valve and an EGR valve in the middle. The throttle valve is connected with the throttle valve through a linkage mechanism.

[0018] 3. A vacuum intake port is installed downstream of the throttle valve of the engine intake manifold, and a cooling water temperature control switch is installed on the water jacket of the engine...

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Abstract

The present invention discloses an equipment capable of implementing layered recrculation of waste gas in the cylinder of gasoline engine and method for controlling air admission. Said waste gas recirculation equipment comprises EGR main pipe for outlet of waste gas of gasoline engine to waste gas mainfold and EGR manifold to air admission inlet, fixing connected plate of EGR manifold, controlled valve on the EGR main pipe, coupling mechanism of valve and cooling water temp. switch. The advatnage of the invention lies in the at the same time of reducing NOx discharge by means of EGR the power of engine is not basically changed, and the power of engine also can be raised by 3-5 % and the fuel consumption can be reduced by 3-5%.

Description

technical field [0001] The invention relates to a device and an air intake control method for realizing stratified waste gas recirculation in a cylinder of a gasoline engine, which belong to the control technology of tail gas emission of automobile engines. Background technique [0002] With the rapid increase in the number of automobiles in my country and the increasingly stringent regulations on automobile exhaust emissions, the further reduction of nitrogen oxides (NO X ) is an inevitable trend. Exhaust gas recirculation (EGR) is used to reduce gasoline engine NO X One of the most effective means of emission, usually EGR is to introduce exhaust gas into the intake manifold, so once the amount of EGR increases, it will affect the power and economy of the engine, because there is too much exhaust gas in the mixture, and the exhaust gas around the spark plug will increase, which will not It is beneficial to the gasoline engine to catch fire, and the combustion speed is gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D21/08F02D43/00
Inventor 姚春德刘增勇敬章超郑贵忠
Owner TIANJIN UNIV