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Original Articles

A New Stratified Charge Combustion System (MCP) for Reducing Exhaust Emissions

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Pages 29-46 | Received 25 Dec 1974, Published online: 15 May 2007
 

Abstract

It has been suggested that the poisonous emissions from spark ignited internal combustion engines can be reduced by lowering the combustion temperature. Combustion under the lean mixture is one way to lower the combustion temperature. To make the engine operate under the lean mixture, a new stratified charge combustion system called the Mitsubishi Combustion Process (MCP) (Miyake, 1972) has been developed.

This paper describes how the distribution of the air-fuel mixture, the cyclic combustion temperature and the effective rate of the heat release in the combustion chamber influence on the emission characteristics of this MCP engine.

The results show that carbon monoxide (CO) emission concetrations can be reduced by making the over-all air-fuel ratio leaner, and that, if in the early stages the combustion rate can be slowed down by controlling the distribution of the air-fuel mixture, then the nitrogen oxide (NO) emission concentration can be reduced extremely

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