A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. A controller controls the shift actuator utilizing an actuating pulse and an opposing pulse.

In the method and the apparatus for thermal management and control, and the vehicle according to the present disclosure, an overtemperature threshold of the vehicle may be adjusted in off-road conditions, and/or an operating temperature of the vehicle may be obtained, and driving parameters of the vehicle may be adjusted according to the operating temperature, so as to enhance the heat dissipation performance of the vehicle in the off-road conditions, and avoid that an over-temperature protection of the engine is easily triggered when the engine is operated at a high speed and a high torque in the off-road conditions, resulting in driving experience being affected by limited torque of the engine and turn-off of an air conditioning occurring in the vehicle, and driving safety also being affected, with no high-power fan and large-size radiator being additionally installed, and thus reducing weight and manufacturing cost of the vehicles.

A transmission is subject to gear shift management that provides for shifting gears in a controlled manner in order to provide for a simplification of part and reduction in system complexity. In particular, a range synchronizer component can be replaced with a simplified range jaw clutch, without incurring a requirement for an installation of other components such as a motor generator or starter-generator.

The present disclosure relates to a cooling system and method of a HEV for cooling an engine clutch and a motor in a HEV, and includes an EOP for pumping oil from an oil pan, a flow regulating valve for adjusting a coolant amount supplied to an engine clutch and a motor in the EOP, and a controller that determines whether to adjust a coolant amount based on a temperature of the engine clutch and a temperature of the motor, accelerates a motor of the EOP based on at least one of an ATF temperature, an engine clutch temperature, a motor temperature, or a TMM control mode, and controls the flow regulating valve depending on a motor speed of the EOP to adjust the coolant amount supplied to from the EOP the engine clutch and the motor.

A transmission is subject to thermal management to prevent damage or failure due to overheating. Sensors can be employed to capture characteristics of a transmission, such as fluid temperature or pressure. Further, a predictive model can be invoked to predict characteristics based on current and future conditions. Characteristics can be compared with a threshold for intervention. A thermal mitigation strategy can be generated and initiated when characteristics satisfy the threshold. The thermal mitigation strategy can specify various actions to dissipate heat, including altering shift control logic and triggering mechanical devices that can increase airflow, reduce air temperature, or both surrounding the transmission.

A vehicle, a vehicle powertrain system, a computer program product, and a method of controlling a vehicle in a manner to achieve enhanced driving performance. An example vehicle powertrain system includes one or more of a powertrain having an engine, a transmission, and a torque converter, and a control module to control the powertrain system. The control module is configured to conduct, in response to sensor data in connection with a detected current vehicle speed and a detected current transmission oil temperature, a vehicle powertrain analysis of the sensor data. The control module is to then control the powertrain in response to the vehicle powertrain analysis and an operating state of a lock-up clutch of the torque converter.

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. A controller controls the shift actuator utilizing an actuating pulse and an opposing pulse.

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. A controller controls the shift actuator utilizing an actuating pulse and an opposing pulse.

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. A shift control circuit operates a shift actuator using a first opposing pulse command and a first actuating pulse command, and releases pressure with shift actuating and opposing volumes of the shift actuator upon determining a shift completion event.

A vehicle includes a gear mechanism connected to a driving wheel; a traveling electric motor configured to exchange heat with a heat exchange medium shared by the gear mechanism and output motive power to the driving wheel via the gear mechanism; and a controller configured to change an operating point of the traveling electric motor to a stronger field side rather than a maximum efficiency point in a case that a temperature of the heat exchange medium is less than a predetermined temperature.