Method for stratifying air-fuel mixture in direct fuel injection

Internal-combustion engines – Combustion chamber means combined with air-fuel mixture... – Stratification in combustion chamber

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123295, 123301, 123302, F02B 1700

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058508163

ABSTRACT:
Swirl strength is formed to be 1-3.5, and the fuel mist speed of the fuel to be injected into a combustion chamber is formed to be 5-37 m/s or 5-25 m/s, whereby the air fuel ratio (A/F) is used as the lean limitation. Further, a control apparatus determines a lean combustion region according to the swirl strength and the fuel mist speed. By paying using the injection speed of the fuel, the rich air-fuel mixture and the lean air-fuel mixture are stratified by the combination of the swirl shape (the swirl strength) and the fuel mist speed.

REFERENCES:
patent: 5086737 (1992-02-01), Watanabe et al.
patent: 5553588 (1996-09-01), Gono et al.

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