Method of Operating A Transmission Clutch

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Method of Operating A Transmission Clutch

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SHELTON MATTHEW JOHN / GIBSON ALEXANDER O'CONNOR / MCCALLUM JAMES WILLIAM LOCH / FORD STUART N / JIANG HONG

A manual transmission is partially automated by utilizing a controller to regulate the torque capacity of the clutch. Under most circumstances, the controller manipulates the clutch according to driver manipulation of a clutch pedal to simulate a non-automated manual transmission. However, to save fuel, the controller may enter a sailing mode in which the clutch is disengaged without the driver depressing the clutch pedal. The controller exits sailing mode in response to the vehicle speed decreasing below a threshold which is a function of the currently selected gear ratio. The threshold is selected such that the engine will not stall and will be able to generate sufficient power for acceleration when the clutch is re-engaged to exit sailing mode. In order to extend the use of sailing mode, the controller may activate a downshift indicator at a slightly higher speed threshold to encourage the driver to downshift.

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Title :

Method of Operating A Transmission Clutch

Contributors:

SHELTON MATTHEW JOHN (author) / GIBSON ALEXANDER O'CONNOR (author) / MCCALLUM JAMES WILLIAM LOCH (author) / FORD STUART N (author) / JIANG HONG (author)

Publication date :

2016-10-27

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F16H Getriebe , GEARING