Idling control method and system for internal combustion engine providing anti creep action
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYukio Hamano, Yuji Kashihara
Life of this patent
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AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYukio Hamano, Yuji Kashihara
Estimating the term…
A vehicle includes an engine and an automatic transmission which has a fluid torque converter, a forward clutch, and a manual range setting valve. Idling control for providing anti creep control is performed by, during engine idling time while the manual range setting valve is set to a forward driving range and the vehicle is substantially stationary, reducing the engagement pressure of the forward clutch by reducing the actuating pressure provided to it. A rotational speed associated with the fluid torque converter is detected, and the actuating pressure provided to the forward clutch is controlled so that the rotational speed associated with the fluid torque converter does not drop below a certain rotational speed value. Thereby good anti creep control is provided. A system is also disclosed for performing the method.
In a vehicle comprising an engine and an automatic transmission including a fluid torque converter, a forward clutch and a manual range setting valve, a method of controlling said automatic transmission for anti creep ready-to-start temporary stop of the vehicle, comprising the steps of:
In a vehicle comprising an engine and an automatic transmission including a fluid torque converter, a forward clutch and a manual range setting valve, a system for controlling said automatic transmission for anti creep ready-to-start temporary stop of the vehicle, comprising:
Dependencies are inferred from the claim text.