Patent application number | Description | Published |
20090118060 | Multi-Speed Epicyclic PowerShift Transmission - A multi-speed transmission includes a first power transmission module driven by an input shaft. A second power transmission module is driven by the first power transmission module. A third power transmission module is driven by the second power transmission module and drives an output shaft. Each power transmission module includes an actuation mechanism and a planetary gearset. Each actuation mechanism controls the output of its respective planetary gearset to one of a first gear ratio and a second gear ratio. One of the actuation mechanisms includes a clutch and a spring biasing a member to rotate and cause a corresponding actuation of the clutch. The clutch causes two members of the respective planetary gearset to rotate at substantially the same speed and provide the first gear ratio. The actuation mechanism selectively restricts the member from rotating and prevent actuation of the clutch to provide the second gear ratio. | 05-07-2009 |
20090250309 | Hydraulic Shift System for Power Transfer Devices - A power transfer device includes a shift collar moveable between a first position and a second position, a rotatable member, a rotary to linear movement conversion mechanism interconnecting the rotatable member and the shift collar, and a hydraulic actuator operable to drive the rotatable member. The actuator includes a vane rotatably moveable within a cavity formed in a housing and a pump selectively providing pressurized fluid acting on the vane. The vane is fixed for rotation with the rotatable member such that rotation of the vane causes the shift collar to axially translate. | 10-08-2009 |
20120065014 | MULTI-MODE DRIVE UNIT - Multi-mode operation is provided for an electrically variable transmission for a motor vehicle. The multi-mode electrically variable transmission provides for multiple gear ratios and power flow configurations including fixed gear operation. The multi-mode electrically variable transmission incorporates a reverse gear for reverse operation. | 03-15-2012 |
20120065015 | MULTI-SPEED DRIVE UNIT - A compound-input is provided for an electrically variable transmission for a motor vehicle. The compound-input electrically variable transmission has improved input gear ratios that allow the vehicle engine to be operated in its desired efficiency and/or performance range during both city and highway vehicle operation. Further, the multi-speed input electrically variable transmission provides an input brake without the need for a dedicated input brake clutch or braking mechanism and incorporates a reverse gear for reverse operation. | 03-15-2012 |
20120065016 | MULTI-SPEED DRIVE UNIT - A multi-speed drive unit is provided for an electrically variable transmission having a variable-range output gear ratio for a motor vehicle. The variable-range output electrically variable transmission has improved final drive gear ratios that allow the motor to be operated in its desired efficiency and/or performance range during both city and highway vehicle operation. Further, the variable-range output electrically variable transmission allows for increased vehicle speeds during electric vehicle operation and provides for the use of the vehicle engine during reverse gear operation. | 03-15-2012 |
20120115660 | HYBRID TRANSMISSION HAVING SYNCHRONIZERS - A transmission used in a hybrid vehicle comprising a planetary gear set and a synchronizer. The planetary gear set having a plurality of members and the synchronizer coupling and decoupling one of the members to change a speed ratio in the transmission. | 05-10-2012 |
20120275930 | ELECTRIC MOTOR ASSIST FOR TRANSMISSION ELECTRIC OIL PUMP - A method for assisting a transmission oil pump in a hybrid electric powertrain to generate transmission oil pressure rapidly during vehicle start. An electric motor is initially utilized to provide momentary torque to rotate an oil pump and rapidly generate transmission oil pressure. After initial assistance is provided by the electric motor, an oil pump electric motor powers the oil pump and maintains oil pressure within the hybrid powertrain. | 11-01-2012 |
20130023368 | CLUTCH SYSTEM FOR A TRANSMISSION - A clutch system for a transmission having a clutch assembly and a brake assembly. The clutch system includes a clutch assembly and a brake assembly coupled to a planetary gear set, engine and two electric motors to reduce transmission complexity, costs, and efficiency losses. The clutch assembly also includes a wear compensation mechanism and a clutch separator mechanism. | 01-24-2013 |
20130150198 | ELECTRICALLY VARIABLE DRIVE UNIT - An electrically variable drive unit having two electric motors is provided. The first electric motor is mounted along the same axis as an engine. The second electric motor is mounted along the same axis as a transmission output. | 06-13-2013 |
20130151131 | START-UP STRATEGY FOR HYBRID POWERTRAIN - A start-up method for a hybrid powertrain in which hydraulic pressure is generated in a casual start-up by an electric oil pump motor where certain predetermined conditions are satisfied and the casual start-up is abandoned and hydraulic pressure is generated by an engine where the predetermined conditions are not satisfied. The casual start-up is also abandoned where a vehicle operator seeks propulsion shortly after start-up and before an oil pump is rotating within a predetermined threshold of an oil pump target RPM. | 06-13-2013 |
20130210567 | HYBRID DUAL CONFIGURATION TRANSMISSION - A hybrid dual configuration transmission for a vehicle having an electric motor, planetary gear set and a plurality of gear meshes is disclosed herein. The hybrid dual configuration transmission provides for a plurality of electrically variable transmission operating modes and a plurality of fixed gear operating modes. The hybrid dual configuration transmission may be operated utilizing exclusively the electric motor, exclusively an engine, or any combination of the electric motor and engine. | 08-15-2013 |
20130225349 | MULTI-MODE DRIVE UNIT - Multi-mode operation is provided for an electrically variable transmission for a motor vehicle. The multi-mode electrically variable transmission provides for multiple gear ratios and power flow configurations including fixed gear operation. An improved input-split planetary gear set configuration is provided for the multi-mode electrically variable transmission. The multi-mode electrically variable transmission may be operated in its desired efficiency and/or performance range more frequently. Further, the transmission reduces clutch torques and provides improved functionality in range-extended electric vehicles and battery electric vehicles. The multi-mode electrically variable transmission is provided with a fixed gear operating capability for improved highway cruising and incorporates a reverse gear for reverse operation. | 08-29-2013 |
20140097713 | ELECTRIC MOTOR WITH COOLANT SHIELD ASSEMBLY - An electric motor assembly includes a shield that extends about a sector of the winding head to be disposed axially outboard of the outer axial end of the winding head and radially inboard of the inner diameter portion of the winding head. The shield defines a reservoir in which the sector of the winding head is received. The reservoir is operable to receive the coolant for cooling the winding head. Additionally, the motor assembly includes at least one sealing member that substantially seals at least one of the slots formed in an inner diameter portion of the stator core. The sealing member is operable to contain the coolant within the corresponding longitudinal opening and the reservoir. | 04-10-2014 |
20140171247 | MULTI-MODE HYBRID VARIABLE DRIVE UNIT - A hybrid transmission providing multiple modes of operation in a compact package. The hybrid transmission utilizes compact electric motors and features simple construction in comparison to conventional hybrid transmissions. | 06-19-2014 |