Hybrid drive system for motor vehicle with powershift transmission
AssigneeNew Venture Gear, Inc.
InventorThomas C. Bowen
Life of this patent
Estimating the term…
Abstract
A multi-speed transmission having an input shaft driven by the engine, an output shaft connected to the driveline, an electric motor, a planetary geartrain driven by one or both of the engine and the electric motor, a plurality of power-operated clutches operable for selectively engaging components of the planetary geartrain, and a control system for controlling automated operation of the power-operated clutches and coordinated actuation of the engine and the electric motor.
Claims21
A transmission for a motor vehicle having an engine and a driveline, comprising:
- an input shaft adapted to be driven by the engine;
- a mainshaft;
- an output shaft adapted to drive the driveline;
- first and second transfer shafts;
- a first planetary gearset including a first sun gear fixed to said first transfer shaft, a first ring gear, and a set of first planet gears supported from a first carrier fixed to said input shaft;
- a second planetary gearset including a second sun gear fixed to said second transfer shaft, a second ring gear fixed to said first ring gear, and a set of second planet gears supported from a second carrier that is fixed to said mainshaft;
- a third planetary gearset including a third sun gear fixed to said mainshaft, a third ring gear, and a set of third planet gears supported from a third carrier that is fixed to said output shaft;
- a layshaft assembly including a layshaft, a first constant-mesh gearset operably disposed between said layshaft and said second transfer shaft, and a second constant-mesh gearset operably disposed between said layshaft and said third ring gear;
- and
- an electric motor driving said layshaft.
A hybrid transmission for use in a motor vehicle having an engine and a driveline, comprising:
- an input shaft adapted to be driven by the engine;
- a mainshaft;
- an output shaft adapted to d rive the driveline;
- a geartrain including a first planetary gearset having a first input member driven by said input shaft, a first output member and a first reaction member, a second planetary gearset having a second input member driven by said first output member, a second output member driving said mainshaft, and a second reaction member, and a third planetary gearset having a third input member driven by said mainshaft, a third output member driving said output shaft, and a third reaction member;
- an electric motor having an output rotor;
- a first clutch for selectively coupling said output rotor to said first reaction member;
- a second clutch for selectively coupling said first reaction member to a stationary member;
- a third clutch for selectively coupling said first input member to said first reaction member;
- a fourth clutch for selectively coupling said second reaction member to said stationary member;
- a fifth clutch for selectively coupling said second reaction member to said second output member;
- and
- a sixth clutch for selectively coupling said third input member to said third output member.
Dependencies are inferred from the claim text.