Throttle valve opening detecting apparatus for a vehicle engine

Details Throttle valve opening detecting apparatus for a vehicle engine Throttle valve opening detecting apparatus for a vehicle engine

1988-06-10

1990-08-21

Lall, Parshotam S.

Boots, shoes, and leggings

731181, 36443105, 36457105, G06F 1520, H04L 2506

Patent

active

049512064

ABSTRACT:
A throttle valve opening detecting apparatus of an automatic transmission for detecting an angular position or opening of a throttle valve for controlling the amount of air-fuel mixture reaching cylinders of a vehicle engine that includes a throttle valve position sensor for providing an output proportional to an angular position or opening of the throttle valve. A memory device memorizes a minimum value of the output to set a reference output for a closed position of the throttle valve. A renewing device decreasingly renews the reference output when the throttle valve position sensor provides an output smaller than the reference output set in the reference output. The renewing device increasingly renews the reference output when the throttle valve position sensor provides an output larger than the reference output and smaller than a preset reference output for a predetermined or preselected period of time.

REFERENCES:
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patent: 4515009 (1985-05-01), Hasegawa et al.
patent: 4581924 (1986-04-01), Otobe et al.
patent: 4616504 (1986-10-01), Overcash et al.
patent: 4679440 (1987-07-01), Okamura
patent: 4688420 (1987-08-01), Minagawa
patent: 4703649 (1987-11-01), Eitoku et al.
patent: 4715220 (1987-12-01), Eitoku et al.
patent: 4718272 (1988-01-01), Plapp
patent: 4719795 (1988-01-01), Eitoku et al.

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