| 摘要 |
PCT No. PCT/EP88/01162 Sec. 371 Date Aug. 15, 1990 Sec. 102(e) Date Aug. 15, 1990 PCT Filed Dec. 15, 1988 PCT Pub. No. WO90/07054 PCT Pub. Date Jun. 28, 1990.A control system is provided for an internal combustion engine in a motor vehicle in which a potentiometer (11) responsive to the position of an accelerator pedal (12) provides a desired position signal to a comparator (15) controlling actuating signals to a servo motor (17) actuating a butterfly valve (18) and a second potentiometer (20) responsive to the position of the butterfly valve (18) provides a feedback signal to the comparator (15). The control system includes a safety device (24) controlling the fuel supply and/or ignition system, a third potentiometer (25) responsive to the position of the accelerator pedal (12), a fourth potentiometer (29) responsive to the position of the butterfly valve (18), and two threshold value switches (TS1,TS2) responsive respectively to the signals from the third and fourth potentiometers (25, 29) and providing output signals when such signals are respectively at or above a first predetermined voltage (V1), and below a second predetermined voltage (V2). The safety device (24) becomes operative in the absence of output signals from both the threshold value switches (TS1, TS2).
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