Throttle valve opening degree detecting system for controlling a

Details Throttle valve opening degree detecting system for controlling a Throttle valve opening degree detecting system for controlling a

1988-11-16

1990-01-16

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

123494, G01M 1500

Patent

active

048935018

ABSTRACT:
A throttle valve opening degree detecting system for controlling an internal combustion engine which generates a signal corresponding to a throttle valve opening by using a throttle sensor whose resistance changes with the throttle valve opening. The throttle sensor has a plurality of resistors connected in parallel therewith and a plurality of switches coupled to the resistors. The switches are turned on and off in response to control signals from a controller so that the output voltage characteristic of the throttle sensor changes. The controller generates the control signals in accordance with the engine speed. Thus, the output voltage characteristic of the throttle sensor has a good resolution even at the range of low engine speed and small throttle valve opening.

REFERENCES:
patent: 4693111 (1987-09-01), Arnold et al.

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