Arrangement for adjusting an operating characteristic quantity o

Details Arrangement for adjusting an operating characteristic quantity o Arrangement for adjusting an operating characteristic quantity o

1988-10-04

1990-03-20

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Idle speed control

123399, F02D 902

Patent

active

049092138

ABSTRACT:
The invention is directed to an arrangement for adjusting an operating characteristic quantity of an internal combustion engine such as for the idle speed control with a redundant drive. Two windings of the drive are driven via two separate lines from two separate output stages. When a defect is detected via an electrical monitoring unit, a safety logic unit transfers the full operation for the drive of the throttle flap to the output stage and the winding corresponding thereto which are not affected by the defect. In this way, a noraml idle speed of the engine is assured even in the presence of a single defect.

REFERENCES:
patent: 4350802 (1982-11-01), Kern et al.
patent: 4494517 (1985-01-01), Kratt et al.
patent: 4702208 (1987-10-01), Lombard et al.
patent: 4705001 (1987-11-01), Danno et al.
patent: 4763623 (1988-08-01), Susaki
patent: 4790276 (1988-12-01), Sasaki
patent: 4791902 (1988-12-01), Ishikawa et al.

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