Fixed speed operation in a hybrid transmission including sport and economy modes
AssigneesChrysler Group LLC, GM Global Technology Operations LLC, Daimler AG, Bayerische Motoren Werke Aktiengesellschaft
InventorChristopher A. Tuckfield
Life of this patent
Estimating the term…
Abstract
A method of operating a hybrid transmission includes controlling the transmission according to a drive mode, which includes a continuously variable speed ratio, and according to automatic and manual fixed speed relationships modes, which include a plurality of fixed speed relationships including mechanics gear ratios and virtual gear relationships. The method also includes receiving a driver request for transmission operation in one of an Economy or a Sport mode, and operating the transmission in the requested Economy or Sport modes.
Claims18
A method of operating a hybrid transmission, comprising the steps of:
- controlling the transmission according to a drive mode, which includes a continuously variable speed relationship;
- and
- controlling the transmission according to automatic and manual fixed speed relationships modes, which include a plurality of fixed speed relationships including mechanical gear ratios and virtual gear relationships;
- receiving a driver request for transmission operation in one of an Economy or a Sport mode;
- and
- operating the transmission in the requested Economy or Sport modes;
- and
- wherein the operating step includes placing the transmission into the automatic fixed relationships mode and operating according to a Sport torque reserve when the Sport mode is requested, which is different from a default torque reserve of the automatic fixed relationships mode.
A method of operating a hybrid transmission, comprising the steps of:
- controlling the transmission according to a drive mode, which includes a continuously variable speed relationship;
- and
- controlling the transmission according to automatic and manual fixed speed relationships modes, which include a plurality of fixed speed relationships including mechanical gear ratios and virtual gear relationships;
- receiving a driver request for transmission operation in one of an Economy or a Sport mode;
- and
- operating the transmission in the requested Economy or Sport modes;
- and
- wherein the operating step includes:
- placing the transmission into the automatic fixed relationships mode and operating according to an Economy torque reserve when the Economy mode is requested, which is different from a default torque reserve of the automatic fixed relationships mode.
A method of operating a hybrid transmission, comprising the steps of:
- controlling the transmission according to a drive mode, which includes a continuously variable speed relationship;
- and
- controlling the transmission according to automatic and manual fixed speed relationships modes, which include a plurality of fixed speed relationships including mechanical gear ratios and virtual gear relationships;
- receiving a driver request for transmission operation in one of an Economy or a Sport mode;
- and
- operating the transmission in the requested Economy or Sport modes;
- and
- wherein the operating step includes:
- placing the transmission into the automatic fixed relationships mode and operating according to one or the other of Sport or Economy torque reserves, which are different from one another and from a default torque reserve of the automatic fixed relationships mode.
Dependencies are inferred from the claim text.