Testing apparatus for combustible charge intake system

Details Testing apparatus for combustible charge intake system Testing apparatus for combustible charge intake system

1996-06-28

1998-03-10

Dougherty, Elizabeth L.

Measuring and testing

Simulating operating condition

Marine

F02D 902

Patent

active

057263566

ABSTRACT:
A testing apparatus for a combustible charge intake system of an internal combustion engine, including a throttle position sensor and a throttle switch respectively coupled with a throttle valve, an accelerator switch coupled with an accelerator pedal, and a control unit operatively coupled with the switches. The control unit is operative to determine that the throttle valve has failed to operate normally when the throttle switch fails to shift to its predetermined state after the accelerator switch has shifted to its predetermined state. The control unit is operative to determine that the accelerator switch fails to operate normally in response to the control unit determining that the accelerator switch has failed to take the predetermined state thereof after the throttle switch has been in the predetermined state thereof.

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patent: 5447134 (1995-09-01), Yokoyama
patent: 5521825 (1996-05-01), Unuvar et al.

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