Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Patent
1992-10-13
1993-11-16
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
123339, 123585, F02D 706, F02M 300, F02B 2300
Patent
active
052613682
ABSTRACT:
An engine control apparatus and method can prevent engine stall in a reliable manner when the engine is changed from a high-speed loaded operation into an idling operation. An air/fuel mixture is supplied to engine cylinders 16 through an intake passage 1 with a throttle valve 6 disposed therein, and a bypass passage 10 with an air valve 12 disposed therein is connected with the intake passage 1 for bypassing the throttle valve 6 to supply auxiliary air to the cylinders. Based on an operating condition signal D in the form of an idle switch on/off signal, an electronic control unit (ECU) 30A detects a change from a loaded operation into an idling operation of the engine, and determines, based on a speed signal R from a speed sensor, whether the number of revolutions per minute of the engine R is equal to or less than a predetermined reference value Rk. The ECU 30A gradually closes the air valve 12 in the bypass passage 10 to decrease an amount of auxiliary air Ac flowing therein in a delayed manner when the engine is changed from a loaded operation into an idling operation, i.e., when the number of revolutions per minute of the engine becomes equal to or less than the predetermined reference value Rk.
REFERENCES:
patent: 4526144 (1985-07-01), Hasegawa et al.
patent: 4649877 (1987-03-01), Yasuoka et al.
patent: 4700674 (1987-10-01), Iwata
patent: 4700679 (1987-10-01), Otobe et al.
patent: 4709674 (1987-12-01), Bianchi et al.
patent: 4799466 (1989-01-01), Shibata et al.
patent: 4870933 (1989-10-01), Mizuno
patent: 4938199 (1990-07-01), Sato et al.
patent: 4989563 (1991-02-01), Fukutomi et al.
patent: 5040506 (1991-08-01), Yamane
Mitsubishi Denki & Kabushiki Kaisha
Nelli Raymond A.
LandOfFree
Apparatus and method for controlling an internal combustion engi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for controlling an internal combustion engi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for controlling an internal combustion engi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-15958