Method for the recognition of idling in connection with a load-s

Details Method for the recognition of idling in connection with a load-s Method for the recognition of idling in connection with a load-s

1994-10-14

1996-03-26

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

731181, 123399, F02D 902, F02D 4108

Patent

active

055011934

ABSTRACT:
A method for recognizing idling in a load-shifting device of an internal combustion engine controlled by throttle valve, in which the position of a setting element on the throttle-valve side is monitored by a first potentiometer and the position of a setting element on the setting-drive side is monitored by a second potentiometer. In order to be able to dispense with a separate idle contact associated with the setting element on the accelerator-pedal side for detecting the driver's wish for "idling", use is made of potentiometers having linear characteristic curves, and comparing the ratio of the characteristic curves with the actual characteristic curve ratio resulting in operation for differences. A second solution proposes adjusting the two potentiometers to the same slope by balancing at two points each, continuously detecting the voltage shifts of the two potentiometers and recognizing idling if, with a given voltage shift of the one potentiometer, a voltage shift which is predetermined on basis of the microlinearity properties of the potentiometers occurs on the other potentiometer.

REFERENCES:
patent: 4722313 (1988-02-01), Kohler et al.
patent: 4920939 (1990-05-01), Gale
patent: 5065721 (1991-11-01), Wiggins et al.
patent: 5213078 (1993-05-01), Kolberg et al.
patent: 5321980 (1994-06-01), Hering et al.

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