摘要:
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.
摘要:
A fluid cooling device 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 tank. A bi-metallic valve is moveable from a first position to a second position in response to an increase in temperature of the fluid such that the valve member closes the at least one bypass tube to preclude additional fluid communication between the fluid inlet tank and the fluid outlet tank when the valve member is in the second position and the valve member opens the bypass tube to provide additional fluid communication between the inlet tank and the outlet tank in the first position.
摘要:
A heat exchanger includes first and second radiator tanks, a radiator core and an oil cooler. The core includes first and second headers associated with the first and second radiator tanks, respectively, and a plurality of radiator tubes extending between therebetween. Each tube provides fluid communication from the first radiator tank to the second radiator tank. The plurality of radiator tubes are generally perpendicular to the headers. Coolant passing through the radiator tubes enters the second radiator tank in a direction perpendicular to the header. The oil cooler includes first and second end tanks and a core having a plurality of convoluted oil cooler plates. The tubes provide fluid communication between the first and second oil cooler tanks. Adjacent plates define coolant paths extending through the core and disposed at an angle relative to the direction the coolant enters the second radiator tank.
摘要:
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.
摘要:
A heat exchanger includes at least two tanks containing a medium to be temperature treated and a plurality of heat exchange tubes extending between the at least two tanks. The heat exchange tubes have exterior surface areas at least partially defining a heat exchange area. A set of cooling fins is located between the heat exchange tubes of the plurality of heat exchange tubes to increase the heat exchange area. The fins are configured to define a plurality of non-straight line paths for the flow of air across the heat exchanger. The non-straight line paths force the flow of air across the heat exchange to change direction and cause impingement of the air onto the fins and tubes as well as turbulence for increasing heat transfer performance.
摘要:
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.