Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1990-09-07
1991-12-31
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Idle speed control
F02M 300
Patent
active
050762303
ABSTRACT:
A feedback control system has a comparing section to compare idling engine speed with a wide dead zone and a narrow dead zone. The wide dead zone has a predetermined width with respect to a desired idle speed. The narrow dead zone width is narrower than the wide dead zone width. When the idling speed is out of the wide dead zone, the system selects the narrow dead zone for rapid convergence of the idling speed. When the idling speed is within the narrow dead zone, the system selects the wide dead zone to prevent hunting.
REFERENCES:
patent: 4474151 (1984-10-01), Atago et al.
patent: 4526144 (1985-07-01), Hasegawa et al.
patent: 4651694 (1987-03-01), Kataoka
patent: 4825829 (1989-05-01), Abe
patent: 4903658 (1990-02-01), Miyama et al.
patent: 4969435 (1990-11-01), Morikawa et al.
patent: 4989565 (1991-02-01), Shimomura et al.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Nelli Raymond A.
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