Abstract: A transmission thermostat device includes a body having first and second input ports and first and second output ports. A first fluid path extends between the first input port and the first output port. A second fluid path extends between the second input port and the second output port. A bypass port is disposed between the first fluid path and the second fluid path. A temperature sensing mechanism is disposed within the housing. The temperature sensing mechanism element is operative in a first mode to close the bypass port and in a second mode to open the bypass port. The temperature sensing mechanism includes a bimetal element responsive to a change in temperature.

Abstract: A transmission fluid cooler for cooling the automatic transmission fluid of a motor vehicle equipped with an automatic transmission, and associated method. The transmission fluid cooler can include a fluid inlet tank, a fluid outlet tank, and a plurality of extruded aluminum heat transfer tubes connecting the inlet tank to the outlet tank. Each tube can include first and second substantially flat sidewalls, a plurality of internal webs extending between the first and second sidewalls, and a plurality of dimples and convolutions to cause turbulation and stirring of the transmission fluid in order to increase heat transfer.

Abstract: A magnetic torque transfer device. The magnetic torque transfer device includes an input member and an output member. The input member notably drives at least one input gear. The output member drives at least one output gear. At least one input gear has a first plurality of gear teeth meshingly engaged with a second plurality of gear teeth of at least one output gear. A magneto rheological fluid is disposed between at least some of the meshing first and second pluralities of gear teeth.

Abstract: A thermostatic device for selectively opening and closing one of more apertures used for controlling the flow of a coolant fluid includes a housing, at least one fixed element and at least one moveable element. The at least one fixed element is fixedly interconnected to the housing. The at least one moveable is moveably connected to the housing. A fluid path passes through the fixed element and the moveable element. The fluid path is opened and closed in response to movement of the moveable element relative to the fixed element such that when the moveable element is in a first position the fluid path is closed and when the moveable element is in a second position the fluid path is open. A temperature responsive bi-metal element is coupled to the moveable element for moving the moveable element between the first position and the second position.

Abstract: A powertrain clutch for transferring power from an output shaft of an engine to an input shaft of a manual transmission includes a housing and an electrically controlled clutch between the input shaft and the output shaft for selectively coupling and uncoupling the output shaft and the input shaft. The clutching arrangement further includes a clutch disposed between the input shaft and the output shaft for synchronizing a speed of the input shaft with a speed of the output shaft.

Abstract: An oil cooler for a motor vehicle includes a fluid inlet tank and a fluid outlet tank. A plurality of heat transfer tubes provide constant fluid communication between the inlet tank and the outlet tank. A bypass arrangement selectively provides additional fluid communication between the fluid inlet tank and the fluid outlet. In this regard, the bypass arrangement provides additional fluid communication between the fluid inlet tank and the fluid outlet tank under a first operating condition and the bypass arrangement precludes additional fluid communication between the inlet tank and the outlet tank under a second operating condition. The bypass arrangement may include a bypass tube and means for selectively blocking the bypass tube. The means for selectively blocking the bypass tube may be automatically response to a change in oil temperature or a change in oil pressure.

Abstract: A heat exchanger for cooling a machine fluid of a vehicle, and associated method. The heat exchanger can include a fluid inlet tank, a fluid outlet tank, and a plurality of heat transfer tubes connecting the inlet tank to the outlet tank. Each tube can include first and second substantially flat sidewalls, a plurality of internal webs extending between the first and second sidewalls, and a plurality of first dimples formed on the first sidewall, each first dimple formed over one of the webs.

Abstract: The present invention uses a plurality of extruded tubes 8 to lead the oil from one oil cooler tank to the other oil cooler tank (one tank is the inlet tank of the oil cooler and the other one is the outlet tank of the oil cooler). In one application, the oil cooler tanks are identical. One tank functions as an inlet tank and the other tank functions as an outlet tank. Typically the ends of the tanks are threaded or equipped with some type of connector that allows the connection to the hydraulic lines leading the oil. The complete oil cooler is immersed in the cooling medium (the radiator coolant, typically a mixture of 50% water and 50% glycol). The heat of the oil is transferred through the tube walls to the cooling medium, so that the temperature of the oil leaving the oil cooler is significantly lower than the temperature of the oil flowing into the oil cooler.