Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, an electric machine, and a transmission, where the transmission is downstream of the engine, and where the electric machine is downstream of the transmission. In one example, while the vehicle is being propelled solely via the electric machine, one or more gears of the transmission may be pre-engaged or selected, to prepare the driveline for an engine start event. In this way, driveline torque disturbance and delays in torque requests may be reduced or avoided upon a request for an engine start event.

A propulsion system includes plural inverters configured to be onboard a vehicle and to convert direct current into an alternating current, and plural motors configured to receive the alternating current from the inverters. The motors also are configured to be operably coupled with axles of the vehicle to rotate the axles. The inverters are configured to be coupled with and control the motors that rotate non-neighboring axles of the axles in the vehicle.

A system for use in an automatic transmission includes a 3-way solenoid-actuated valve includes a valve body having an inlet port and a first outlet port and a second outlet port, a valve disposed within the valve body and slidably controllable to proportion flow between the first outlet port and the second outlet port, and a spring disposed in the valve body to bias the valve for flow toward the second outlet port. The system also includes at least one pump providing fluid to the inlet port, a first fluid circuit connected to the first outlet port providing fluid to a first subsystem of the automatic transmission, and a second fluid circuit connected to the second outlet port providing fluid to a second subsystem of the automatic transmission.

A stator for a hybrid electric vehicle combines the best features of complete stators and segmented stators. The bobbins of a complete stator are modified to effectively widen the teeth and thereby reduce torque ripple. Each resin bobbin includes cavities on either side of the tooth. The cavities are filled with a magnetically conductive insert. In some embodiments, a single wedge shaped insert is installed on each side of each tooth. In other embodiments, multiple inserts of varying cross sectional area are installed on each side of each tooth.

A power transmission structure of a hybrid vehicle includes a motor generator, a first clutch, a second clutch, a third clutch, an engine, a motor, and an output shaft transferring power generated by the engine and power generated by the motor to a transmission. The motor is disposed parallel to the engine, the output shaft extends through a central portion of the motor and is connected to the transmission. The first clutch and the second clutch are disposed as a double clutch on the output shaft between the engine and the motor. The third clutch is disposed between the motor and the transmission to enable and disable power to be transferred via the output shaft.

A drive train of a hybrid motor vehicle has an internal combustion engine (4), at least one first electric motor (16), at least a first clutch arrangement (6), at least one gear assembly (8), a storage arrangement and at least one auxiliary unit, such as an air conditioning compressor. The internal combustion engine (4) is connected drivingly to a first drive axle (14) via the clutch arrangement (6) and the gear assembly (8), and the first electric motor (16) is connected drivingly to a second drive axle (22) and to the storage arrangement and/or the auxiliary unit. The first electric motor (16) has a rotor shaft (36) with a first end (34) drivingly connected to the second drive axle (22) by a first switching unit (18) and a second end (38) drivingly connected to a crankshaft (28) of the internal combustion engine (4) by a second switching unit (24).

A drive device includes a first drive unit and a second drive unit. A transmission unit includes a primary shaft for connection to the first drive unit, a secondary shaft, and at least one gear pair via which the primary and secondary shafts are operatively connectable to one another. Mounted in coaxial relationship to the secondary shaft is a driving gear which is operatively connected to the second drive unit, and mounted in coaxial relationship to the primary shaft is an output gear which meshes with the driving gear. A secondary-shaft coupling device can couple the driving gear directly with the secondary shaft, and a primary-shaft coupling device can couple the output gear directly with the primary shaft.

A system for providing electric creep in a manual transmission vehicle having an accelerator pedal, a brake pedal, and an engine uses an electric motor configured to provide creep torque to a transmission output shaft when the manual transmission is in neutral, the electric creep mode is activated and the engine is auto-stopped. The system may provide forward or reverse creep torque. The system may cancel the electric creep in response to a vehicle door opening, a driver unbuckling a seatbelt, or depressing the accelerator pedal or the clutch pedal, or shifting the manual transmission out of neutral.

A hybrid work machine includes: an engine configured to drive a hydraulic pump as a hydraulic source of a hydraulic actuator; an engine-assist motor generator attached to the engine; an electric motor for use in a part of a driving system of the work machine; an electricity storage device configured to store generated power of the motor generator; a power converter disposed between the electric motor and DC buses; and a buck-boost converter disposed between the DC buses and the electricity storage device, and configured to perform power transfer between the DC buses and the electricity storage device by raising and lowering a voltage of the DC buses, the hybrid work machine, further comprises: a controller configured to temporarily raise the voltage of the DC buses when a torque required for the electric motor exceeds a torque outputtable at the voltage of the DC buses connected to the power converter.

A power transmission apparatus of a hybrid electric vehicle HEV has an engine clutch mounted between a driving motor, which is mounted to a front end of a transmission, and an engine. An internal gear unit, in which an inner gear is enmeshed in an outer gear while the inner gear is inserted into the outer gear, is mounted between the engine clutch and the driving motor, so that an output of the engine is transmitted to the transmission while rotational speeds of the engine and the driving motor are not asynchronous when the engine is coupled.