Internal-combustion engines – Spark ignition timing control – Electronic control
Patent
1987-05-04
1987-12-29
Argenbright, Tony M.
Internal-combustion engines
Spark ignition timing control
Electronic control
123520, F02P 504, F02M 2508
Patent
active
047153407
ABSTRACT:
An apparatus and a method for controlling hydrocarbon emission from an internal combustion engine having an air/fuel intake coupled to a fuel vapor recovery system. Fuel vapors are periodically purged from the fuel vapor recovery system into the air/fuel intake. The mixture of air/fuel vapor and fuel is regulated by a feedback loop response to an exhaust gas oxygen sensor to maintain a desired air/fuel ratio. At the beginning of each purge cycle, engine spark timing is temporarily retarded to reduce hydrocarbon emissions during the response time of the feedback loop.
REFERENCES:
patent: 3680318 (1972-08-01), Nakajima et al.
patent: 3872848 (1975-03-01), King
patent: 4013054 (1977-03-01), Balsley et al.
patent: 4031869 (1977-06-01), Onishi et al.
patent: 4275697 (1981-06-01), Stoltman
patent: 4308842 (1982-01-01), Watanabe et al.
patent: 4326489 (1982-04-01), Heitert
patent: 4377142 (1983-03-01), Otsuka et al.
patent: 4411241 (1983-10-01), Ishida
patent: 4450808 (1984-05-01), Moriyama et al.
patent: 4527532 (1985-07-01), Kasai et al.
patent: 4630581 (1986-12-01), Shibata
patent: 4641623 (1987-02-01), Hamburg
patent: 4664087 (1987-05-01), Hamburg
patent: 4677956 (1987-07-01), Hamburg
SAE 82066, "Measurement and Improvement of the Transient A/F Characteristics of an Electronic Fuel Injection System", Hamburg et al. (1982).
Cook Jeffrey A.
Hamburg Douglas R.
Abolins Peter
Argenbright Tony M.
Ford Motor Company
Lippa Allan J.
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