Measuring and testing – Simulating operating condition – Marine
Patent
1997-10-20
2000-02-29
McCall, Eric S.
Measuring and testing
Simulating operating condition
Marine
123337, G01M 1500
Patent
active
060295139
ABSTRACT:
An apparatus for controlling an opening of a throttle valve to adjust an amount of air flow led into an internal combustion engine mounted on a vehicle. A depression sensor detects the degree of depression of an accelerator pedal. An electric component is provided for electrically adjusting the opening of the throttle valve based on the depression of the gas pedal. A mechanical component is provided for adjusting the opening of the throttle valve in response to the depression of the accelerator pedal. The mechanical component is rendered operable when the electric component fails to control the opening of the throttle valve. An electric control unit (ECU) prohibits the electric component from resuming control of the throttle valve until a certain condition is met, such as stoppage of the engine or the entire vehicle, even if the electric component is capable of controlling the throttle valve. In another embodiment, the ECU prohibits the electric component from resuming control of the throttle valve until a transmission shift position of neutral or park is detected.
REFERENCES:
patent: 5076231 (1991-12-01), Buchl
patent: 5133321 (1992-07-01), Hering et al.
patent: 5201291 (1993-04-01), Katoh et al.
patent: 5297522 (1994-03-01), Buchl
Kikori Shigeo
Takada Mitsuru
McCall Eric S.
Toyota Jidosha & Kabushiki Kaisha
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