Throttle valve control system of internal combustion engine

Details Throttle valve control system of internal combustion engine Throttle valve control system of internal combustion engine

1987-04-24

1988-04-05

Cuchlinski, Jr., William A.

Internal-combustion engines

Engine speed regulator

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

123399, F02D 4110

Patent

active

047351810

ABSTRACT:
An internal combustion engine throttle valve control system comprising driving means for driving a throttle valve so that the opening of the throttle valve assumes a predetermined value, engine r.p.m. detecting means for detecting engine r.p.m., and control means for controlling the rate of driving the throttle valve which receive the output signal from the engine r.p.m. detecting means and which produces, in accordance with the rate of change in the position of the accelerator pedal, a first signal to drive the throttle valve at a first rate corresponding to the rate of change in the position of the accelerator pedal under a condition where the amount of change in the position of the accelerator pedal is not larger than a predetermined value and a second signal to drive the throttle valve at a second rate smaller than the first rate under the condition where the amount of change in the position of the accelerator pedal is larger than the predetermined value and where the rate of change in the position of the accelerator pedal is larger than a predetermined value and where the engine r.p.m. is smaller than a predetermined value and controls said driving means in accordance with the engine operating condition. According to the present invention, the response of the engine to acceleration under high engine r.p.m. can be remarkably improved and knocking can be effectively prevented under low engine r.p.m. without degrading the response of the engine to acceleration when an accelerator pedal is slightly operated.

REFERENCES:
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patent: 4385604 (1983-05-01), Fiala
patent: 4453516 (1984-06-01), Filsinger
patent: 4471610 (1984-09-01), Watanabe
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patent: 4526153 (1985-07-01), Hasegawa et al.
patent: 4589302 (1986-05-01), Oda et al.
patent: 4671235 (1987-06-01), Hosaka

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