Boots – shoes – and leggings
Patent
1991-01-04
1993-08-31
Black, Thomas G.
Boots, shoes, and leggings
36443107, 364565, 73116, 123436, 123419, G01M 1500
Patent
active
052414809
ABSTRACT:
A method and apparatus for detecting the quality of combustion in each cylinder of a multi-cylinder internal combustion engine is disclosed. The invention determines a combustion stroke of each cylinder by sensors and detects the rotational speed of the engine at least three times during each combustion stroke by a rotation speed calculation device. The detected rotational speeds are evaluated by an arithmetic calculation device to identify the variation in rotational speed of each piston during a combustion stroke whereby the quality of combustion is, thus, determined. In a feature of the invention fluctuations in rotational speed caused by reciprocating inertia (.omega..sub.c) are calculated and eliminated from fluctuation in engine speed caused by combustion (.omega..sub.g) so that the quality of combustion based only upon variation in detected speeds caused by combustion is derived.
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Ishii Toshio
Kashiwaya Mineo
Takaku Yutaka
Tanaka Naoyuki
Auchterlonie Thomas S.
Black Thomas G.
Hitachi , Ltd.
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