Control arrangement of throttle valve operation degree for an in

Internal-combustion engines – Engine speed regulator – Open loop condition responsive

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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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