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Study on In-cylinder Direct-injection Technology of Single Fuel CNG Engine

Zhendong Zhang

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Abstract

A single fuel CNG engine with in-cylinder direct injection technology was transformed from a gasoline engine with the type of 175F.And the control system was also designed,with the 80C196KC single chip microprocessor as the controller.In this paper,what has been introduced are the design of the control circuits,matching of parameters and establishment of the control algorithms.Bench tests showed that the design process of the control system was reasonable and the control method was effective.At last,two-zone quasi-dimension simulation model was applied to the combustion process of the CNG engine.Through simulation and experiment,the combustion regularity of the CNG engine were disclosed,including performance,emission and combustion characteristics,and the effect of the structure parameters and running parameters on the engine performance was analyzed.

About this research paper

What this paper is about

A single fuel CNG engine with in-cylinder direct injection technology was transformed from a gasoline engine with the type of 175F.And the control system was also designed,with the 80C196KC single chip microprocessor as the controller.In this paper,what has been introduced are the design of the control circuits,matching of parameters and establishment of the control algorithms.Bench tests showed that the design process of the control system was reasonable and the control method was effective.At last,two-zone quasi-dimension simulation model was applied to the combustion process of the CNG engine.Through simulation and experiment,the combustion regularity of the CNG engine were disclosed,including performance,emission and combustion characteristics,and the effect of the structure parameters and running parameters on the engine performance was analyzed.

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Available abstract

A single fuel CNG engine with in-cylinder direct injection technology was transformed from a gasoline engine with the type of 175F.And the control system was also designed,with the 80C196KC single chip microprocessor as the controller.In this paper,what has been introduced are the design of the control circuits,matching of parameters and establishment of the control algorithms.Bench tests showed that the design process of the control system was reasonable and the control method was effective.At last,two-zone quasi-dimension simulation model was applied to the combustion process of the CNG engine.Through simulation and experiment,the combustion regularity of the CNG engine were disclosed,including performance,emission and combustion characteristics,and the effect of the structure parameters and running parameters on the engine performance was analyzed.

Key concepts: Automotive engineering, Engine control unit, Hydrogen internal combustion engine vehicle, Petrol engine, Controller (irrigation), Cylinder, Internal combustion engine, Engineering

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