Internal-combustion engines – Charge forming device – Including cylinder pressure or temperature responsive means
Patent
1983-12-16
1985-10-01
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Including cylinder pressure or temperature responsive means
123436, F02M 5100
Patent
active
045439346
ABSTRACT:
An air/fuel ratio control system is applicable to lean mixture combustion internal combustion engines. The control system determines the value of the mixture ratio at which engine stability can switch between stable and unstable conditions. As long as the engine continues to run in a stable condition in which the engine roughness is within an acceptable range, the mixture is intermittently leaned out by a given proportion. On the other hand, when engine roughness in an unacceptable range is detected, the mixture ratio is enriched by a given proportion to overcome the unacceptable engine roughness. Enrichment of the mixture is continued until engine roughness within the acceptable range is detected.
REFERENCES:
patent: 3789816 (1974-02-01), Taplin et al.
patent: 4161162 (1979-07-01), Latsch et al.
patent: 4197767 (1980-04-01), Leung
patent: 4216750 (1980-08-01), Kobayashi
patent: 4391248 (1983-07-01), Latsch
Society of Automotive Engineers, "Effects of Swirl and Squish on S.I. Engine Combustion and Emission", pp. 1-10, Feb. 28-Mar. 4, 1977.
Morita Tatsuo
Sawamoto Kunifumi
Argenbright Tony M.
Nissan Motor Company Limited
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