Electronic throttle controller

Details Electronic throttle controller Electronic throttle controller

2006-03-28

2006-03-28

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C073S118040

Reexamination Certificate

active

07017550

ABSTRACT:
In an electronic throttle controller, when an intake air amount detected by an air flow meter is smaller than a stall prevention judging-purpose each cylinder intake amount, a stall prevention adding amount “large” is added to intake throttle opening degree deviation, a DC motor is driven while neglecting a feedback control operation, and an opening degree of the intake throttle is controlled to be further opened from an actual preceding control position. When an execution number of the engine stop avoiding control is larger than a predetermined number within a predetermined period, an abnormal condition of a throttle position sensor is detected, and thus, energizing operation of the DC motor is stopped. The abnormal condition malfunction of the throttle position sensor can be firmly detected while an engine stall is avoided.

REFERENCES:
patent: 5964202 (1999-10-01), Takagi et al.
patent: 6497214 (2002-12-01), Yagi
patent: 2001 303976 (2001-10-01), None

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