Engine combustion control system
First Claim
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1. A combustion control system for an engine, comprising:
- (a) means for swirling air flow into the engine to an adjustable degree, wherein the degree of swirl in the air flow affects the duration of combustion of a mixture of air and fuel in the engine; and
(b) means for adjusting the degree of swirl so as to hold the duration of mixture combustion to within an acceptable range.
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Abstract
An arrangement serves to swirl air flow into an engine to an adjustable degree. The degree of swirl in the air flow affects the duration of combustion of a mixture of air and fuel in the engine. The degree of swirl is adjusted so as to hold the duration of mixture combustion within an acceptable range, the acceptable range varying in accordance with engine operating conditions.
34 Citations
8 Claims
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1. A combustion control system for an engine, comprising:
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(a) means for swirling air flow into the engine to an adjustable degree, wherein the degree of swirl in the air flow affects the duration of combustion of a mixture of air and fuel in the engine; and (b) means for adjusting the degree of swirl so as to hold the duration of mixture combustion to within an acceptable range. - View Dependent Claims (2, 3)
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4. A combustion control system for an engine, comprising:
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(a) means for swirling air flow into the engine to an adjustable degree; (b) means for adjusting the air-to-fuel ratio of a mixture of air and fuel supplied to the engine; and (c) means for adjusting the degree of swirl in accordance with the adjustment of the air-to-fuel ratio of the mixture. - View Dependent Claims (5, 6, 7)
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8. A combustion control system for an engine, comprising:
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(a) means for detecting the actual duration of combustion of a mixture of air and fuel in the engine; (b) means for monitoring an operating condition of the engine; (c) means for deriving a target duration of mixture combustion which varies as a function of the monitored engine operating condition; (d) means for deriving the difference between the actual duration and the target duration of mixture combustion; (e) means for swirling air flow into the engine to an adjustable degree, wherein the degree of swril on the air flow affects the actual duration of mixture combustion; and (f) means for adjusting the degree of swirl in accordance with the difference between said durations so as to adjust the actual duration toward agreement with the target duration.
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Specification