Control arrangement of throttle valve operation degree for an in

Details Control arrangement of throttle valve operation degree for an in Control arrangement of throttle valve operation degree for an in

1993-09-17

1995-09-26

Kamen, Noah P.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123361, F02D 4100

Patent

active

054526973

ABSTRACT:
A throttle valve control arrangement for an internal combustion engine comprising: a throttle valve; an electrical motor for actuating the throttle valve; mechanical links for coupling and decoupling the electrical motor with the throttle valve; a throttle position sensor for detecting a position of the throttle valve; and a control unit which compares an output signal from the throttle position sensor representing a detected throttle position with a signal representing a target throttle valve opening degree and generates a feed-back control signal for the electrical motor based on the comparison result, wherein the throttle position sensor shows a first output voltage characteristic with respect to throttle valve opening degrees for a first region covering ISC and FIC and a voltage gradient of the first output voltage characteristic is selected larger than that of an unmodified output voltage characteristic of the throttle position sensor, thereby a high resolution of the throttle position sensor is obtained for the first region.

REFERENCES:
patent: 4693111 (1987-09-01), Arnold et al.
patent: 4762108 (1988-08-01), de Concini
patent: 4893501 (1990-01-01), Sogawa
patent: 4895126 (1990-01-01), Nishimiya et al.
patent: 4901695 (1990-02-01), Kabasin et al.

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