Abstract: A transmission thermostat adapted to control the flow of automatic transmission fluid between a transmission and a transmission oil cooler including a temperature-sensitive mechanism. The temperature-sensitive mechanism includes at lease one bimetallic coil.

Abstract: A heat exchanger for an internal combustion engine of a motor include first and second radiator tanks and a plurality of radiator tubes extending between the first and second radiator tanks. The first radiator tank includes a plurality of walls. Brazed joints are between the plurality of walls to make the first radiator tank liquid tight. Brazed joints are also between the plurality of radiator tubes and the first and second radiator tanks. An oil-cooling structure is disposed inside the first radiator tank. The brazed joints between the plurality of walls and between the plurality of radiator tubes and the first and second radiator tanks are simultaneously formed.

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: An internal thermostat for an automatic transmission of a motor vehicle includes a thermostat housing, a rotary valve and a bimetallic, temperature sensitive element. The thermostat housing is attached to an internal flow aperture of the transmission to be controlled. The rotary valve is moveable between an open position and a closed position in response to a temperature of oil, thereby controlling oil flow through the internal flow aperture of the transmission. The bimetallic temperature-sensitive element is attached to the rotary valve and operative to control an angular position of the valve as a function of the temperature of the surrounding oil. The bimetallic, temperature-sensitive element may be shaped like a coil. Alternatively, the bimetallic, temperature-sensitive element may be shaped like a substantially linear strip.

Abstract: An oil cooler for a motor vehicle includes a fluid inlet tank and a fluid outlet tank. A plurality of heat transfer tubes provides constant fluid communication between the inlet tank and the outlet tank. A 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 an element for selectively blocking the bypass tube. The element for selectively blocking the bypass tube may be automatically response to a change in oil temperature or a change in oil pressure.

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 thermostat includes a housing defining a fluid path therethrough. The thermostat further includes a valve plate for selectively sealing an opening in the fluid path for opening and closing the fluid path. The valve plate is mounted within the fluid path for rotation about a pivot axis extending generally perpendicular to the flow of fluid through the housing. The valve plate is configured and disposed within the fluid path such that fluid pressure against a first portion of the valve plate creates a first torque and fluid pressure against a second portion of the valve plate creates a second torque. The first and second torques substantially cancel each other out such that a net torque generated by the fluid pressure on the valve plate is neglible.

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 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.