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Gas inlet and outlet system for homogeneous charge compression ignition (HCCI) engine, gas inlet control method and engine

A technology of homogeneous compression ignition and control method, applied in engine control, combustion engine, engine components, etc., can solve problems such as unfavorable improvement of engine emission performance, low intake temperature, etc., to improve fuel economy, solve hot air difficult effect

Active Publication Date: 2012-05-09
SAIC MOTOR
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In the SI combustion mode cold engine start, the intake air temperature is constant and relatively low, which is not conducive to improving the emission performance of the engine

Method used

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  • Gas inlet and outlet system for homogeneous charge compression ignition (HCCI) engine, gas inlet control method and engine
  • Gas inlet and outlet system for homogeneous charge compression ignition (HCCI) engine, gas inlet control method and engine
  • Gas inlet and outlet system for homogeneous charge compression ignition (HCCI) engine, gas inlet control method and engine

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Embodiment Construction

[0039]Presented below are some of the many possible embodiments of the invention, intended to provide a basic understanding of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of protection.

[0040] figure 1 Shown is a structural schematic diagram of an intake and exhaust system of an HCCI engine according to an embodiment of the present invention. The HCCI engine can be various types of internal combustion engines, for example, gasoline engines of the type commonly used in automobiles. Similarly, when the HCCI engine is operating normally at low load, it works in the HCCI combustion mode, and in other working conditions, including cold start, warm-up, high load and other working conditions, the HCCI engine works in the SI combustion mode. Such as figure 1 As shown, the HCCI gasoline engine body 80 is provided with a hot intake passage and a cold intake passage. For simple illustration, the HCCI engine of th...

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Abstract

The invention provides a gas inlet and outlet system for a homogeneous charge compression ignition (HCCI) engine, a gas inlet control method and an engine, belonging to the technical field of power assemblies. The gas inlet and outlet system comprises a first gas channel and a second gas channel, wherein the first gas channel is provided with a first heat exchanger and a second heat exchanger for heating gas, and a first throttling valve; the second gas channel is provided with a second throttling valve; and the first throttling valve and the second throttling valve are adjusted and controlled to adjust the gas flow ratio of the first gas channel and the second gas channel, so that optimized working performance can be realized for the HCCI engine under the working condition of a spark ignition (SI) combustion mode, in particular the cold engine startup working condition and the working condition of a normal HCCI combustion mode respectively.

Description

technical field [0001] The invention belongs to the technical field of powertrain, and in particular relates to a Homogenous Charge Compression Ignition (HCCI) engine, in particular to an intake and exhaust system of the Homogenous Charge Compression Ignition engine, its intake control method, and an intake and exhaust system with the same. gas system engine. Background technique [0002] Homogenous Charge Compression Ignition (HCCI) engines (such as gasoline engines) have attracted the attention of automobile companies due to their potential to greatly improve the thermal efficiency of gasoline engines and drastically reduce nitrogen oxides (NOx). Among them, General Motors has demonstrated the prototype vehicle equipped with HCCI engine in 2008. HCCI engine is considered to be an important development direction of future vehicle engines. [0003] HCCI combustion refers to the combustion phenomenon that occurs when the temperature of the mixture in the cylinder is close t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/104F02M31/02F02D9/08F01N13/08F02B1/08
Inventor 沈义涛吕世亮尹琪章健勇孔毅
Owner SAIC MOTOR
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