Throttle valve control device

Details Throttle valve control device Throttle valve control device

2005-04-05

2005-04-05

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

C123S376000

Reexamination Certificate

active

06874468

ABSTRACT:
An ECU2performs ON/OFF judgments on an ignition switch. When the ignition switch is OFF, a judgment is made whether or not voltage learning for a fully opened position of a throttle valve34is complete. If complete, an electric power for a DC motor31is cutoff. A TPS output voltage value is read in, and a judgment is made whether or not a given period of time has elapsed. If the given period of time has elapsed, and if a throttle position sensor output voltage value VTPS is equal to or greater than a given value, then a judgment is made that there is a return spring35breakage failure. Breakage to the return spring35can thus be reliably detected.

REFERENCES:
patent: 5113823 (1992-05-01), Iriyama
patent: 5367997 (1994-11-01), Kawamura et al.
patent: 03-000945 (1991-01-01), None
patent: 8-270487 (1996-10-01), None
patent: 11-229943 (1999-08-01), None
patent: 11-257139 (1999-09-01), None

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