Method of diagnosing a mechanism for improving combustion in an

Details Method of diagnosing a mechanism for improving combustion in an Method of diagnosing a mechanism for improving combustion in an

1996-07-19

1997-09-23

Dombroske, George M.

Measuring and testing

Simulating operating condition

Marine

73116, 340439, 36443105, F02D 4134, F02M 2906, G01M 1500

Patent

active

056707150

ABSTRACT:
In an internal combustion engine equipped with a mechanism for improving combustion such as a swirl control valve, the air-to-fuel ratio of the combustion mixture gas is increased until the stability of the engine reaches an allowable limit under the condition where the combustibility is to be improved by the mechanism for improving combustion. When the air-to-fuel rate at the allowable limit is equal to or smaller than a reference air-to-fuel ratio, whether or not the mechanism for improving combustion is defective is diagnosed.

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