Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1997-02-14
2000-01-04
Dolinar, Andrew M.
Internal-combustion engines
Engine speed regulator
Idle speed control
F02D 4116
Patent
active
060098511
ABSTRACT:
An idle speed control apparatus includes an electronic control unit connected to sensors and switches for detecting the on-off states of an air conditioner and other devices, throttle opening, engine speed, etc. The electronic control unit selectively drives fuel injection valves for adjusting the injection quantity, air bypass valve for adjusting the suction air amount, and/or EGR valve for adjusting the exhaust gas recirculation rate in accordance with an engine load detected by the sensors and switches, thereby selectively executing air-fuel ratio adjustment, suction air amount adjustment, and/or exhaust gas recirculation rate adjustment as required, giving priority to the air-fuel ratio adjustment and suction air amount adjustment in the order named. Thus, idle speed control to cope with engine load fluctuations can be carried out with stability.
REFERENCES:
patent: 4398514 (1983-08-01), Nakamura
patent: 4491108 (1985-01-01), Hasegawa et al.
patent: 4593663 (1986-06-01), Atago et al.
patent: 4721082 (1988-01-01), Hibino et al.
patent: 5209214 (1993-05-01), Ikuta et al.
Patent Abstracts of Japan--Abstract for JP60 085233 A, published May 14, 1985; Masatoshi Sugiura.
Iida Kazumasa
Miyamoto Katsuhiko
Dolinar Andrew M.
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
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