Abstract:
A detent plunger assembly (48) for selectively inhibiting shift lever (42) movement in a controller-assisted, manually shifted transmission system (10). The assembly includes a differential area piston (86) and a light biasing spring (110) for causing said plunger to apply a light inhibiting force when system air (S) is not available, such as at vehicle startup.
Abstract:
A double acting, baulkring-type synchronizer (20) for frictionally synchronizing and positive connecting first and second gears (14, 16) to a shaft (12). The synchronizer includes a first cone clutch with friction members (22,46) for frictionally synchronizing gear (14) with shaft (12) and a second cone clutch with friction members (24,44) for frictionally synchronizing gear (16) with shaft (12). The synchronizer further includes a third cone clutch with friction members (18,56) which is engaged in response to engagement of the first cone clutch and axial movement of the first gear (14).
Abstract:
A vehicle power bus control system is disclosed. The vehicle power bus includes at least one device having an issued, maximum, positive electrical limit value, and an issued, minimum, negative electrical limit each communicated to the at least one device from a control module coupled to the at least one device. The control module includes means for expanding one or more of the issued, maximum, positive electrical limit values, and the issued, minimum, negative electrical limit values responsive to a request from the at least one device for expanding one or more of the issued, maximum positive electrical limit values and the issued, minimum, negative electrical limit values.
Abstract:
A method is provided for reducing engine idling time in a hybrid vehicle that includes a vehicle accessory and a hybrid powertrain having an engine, a generator operatively coupled to the engine, and an energy source. The method includes selectively powering the vehicle accessory using the energy source while the engine is not running, monitoring the energy source state of charge, selectively starting the engine when the energy source state of charge is less than or equal to a predetermined minimum state of charge, operating the engine driven generator to recharge the energy source to a predetermined maximum state of charge, and turning off the engine when the energy source state of charge is greater than or equal to the predetermined maximum state of charge. A hybrid electric vehicle power delivery system is also provided.
Abstract:
A vehicle power bus control system is disclosed. The vehicle power bus includes at least one device having an issued, maximum, positive electrical limit value, and an issued, minimum, negative electrical limit each communicated to the at least one device from a control module coupled to the at least one device. The control module includes means for expanding one or more of the issued, maximum, positive electrical limit values, and the issued, minimum, negative electrical limit values responsive to a request from the at least one device for expanding one or more of the issued, maximum positive electrical limit values and the issued, minimum, negative electrical limit values.
Abstract:
A vehicle power bus control system including a control module having a communication interface and a device having a communication interface for communicating with the control module wherein the control module is adapted to transfer at least one electrical limit value to the device, and wherein the device is adapted to act in response to the electrical limit value to self-regulate an electrical quantity associated with the device.
Abstract:
A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.
Abstract:
A method and system are provided for determining the torque required to launch a vehicle having a hybrid drive-train that includes at least two independently operable prime movers. The method includes the steps of determining the value of at least one control parameter indicative of a vehicle operating condition, determining the torque required to launch the vehicle from the at least one determined control parameter, comparing the torque available from the prime movers to the torque required to launch the vehicle, and controlling operation of the prime movers to launch the vehicle in response to the comparing step. The system of the present invention includes a control unit configured to perform the steps of the method outlined above.
Abstract:
A method/system for adaptively controlling engine fueling during disengagement of a jaw clutch (70) while maintaining the vehicle master friction clutch (20) engaged. Engine torque is initially commanded to a zero drive line torque value (114) and, after a period of time (T2−T1) if non-torque lock is sensed ((d/dt(SLY-Y))
Abstract:
A control for enhanced manual start ratio engagement in a computer-assisted (48) vehicular compound transmission (16) having a synchronized main section (16A) shifted by a manually operated shift lever (31), an auxiliary splitter section, and a controller (48). The splitter section (16E) is located behind the main section and is provided with a three-position (L, H, N) actuator (46) and is commanded to a splitter-neutral position upon sensing that the vehicle is essentially stopped (OS