Internal-combustion engines – Combustion chamber means combined with air-fuel mixture... – Having a single combustible mixture inlet combined with...
Patent
1993-12-27
1995-05-09
Wolfe, Willis R.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
Having a single combustible mixture inlet combined with...
123435, 123527, F02B 4304, F02D 4140
Patent
active
054130751
ABSTRACT:
An air-fuel ratio control system for a gaseous fuel engine which runs on gaseous fuel containing at least partly hydrogen gas has a fuel supply control valve which adjusts the amount of the gaseous fuel supplied to the engine and a control unit which controls the fuel supply control valve to control the air-fuel ratio according to the engine load. The control unit controls the fuel supply control valve so that the air-fuel ratio becomes higher than a NOx-maximizing air-fuel ratio, at which the amount of NOx emitted from the engine is maximized, in a predetermined operating range of the engine, and in the predetermined operating range of the engine, the control unit controls the fuel supply control valve so that the air-fuel ratio becomes higher in a high engine speed range than in a low engine speed range.
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patent: 5303684 (1994-04-01), Brown et al.
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Mamiya Kiyotaka
Shiraishi Tohru
Teramoto Takafumi
Yokomizo Katuhiro
Ferguson Jr. Gerald J.
Mazda Motor Corporation
Wolfe Willis R.
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