Abstract: A system for cooling a power transfer unit includes a case enclosing said unit and including an outer surface, a chamber bounded by said outer surface, an inlet for carrying coolant from a source of pressurized coolant into the chamber, and an outlet for carrying coolant from the chamber.

Abstract: A system for heating and cooling the transmission fluid including a heat exchanger adapted to transfer heat between an engine coolant and a transmission fluid and a controller for controlling a valve to place the system into a select one of three modes including a heater core priority mode wherein no engine coolant flows to the heat exchanger, a heating mode wherein hot engine coolant flows directly to the heat exchanger from the engine and a cooling mode wherein cool engine coolant flows directly to the heat exchanger from the radiator, whereby the transmission fluid is heated in an efficient manner with minimal impact on passenger compartment heating.

Abstract: The present disclosure relates to systems and methods for controlling a flow regulator, such as a diverter valve, that is configured to guide air through a transmission housing before entering an engine intake manifold. In certain arrangements, the flow regulator operates according to predetermined conditions, e.g., meeting an engine intake manifold air temperature threshold.

Abstract: A method for controlling the temperature of transmission fluid in a motor vehicle includes operating in an automatic transmission fluid cooling mode, a heater priority mode entered by disabling automatic transmission fluid heating, and an automatic transmission fluid heating mode which includes sending hot engine coolant to a heat exchanger for heating the automatic transmission fluid by transferring heat from the hot engine coolant to the automatic transmission fluid. The method switches to from a heater priority mode to a transmission heating mode base on a number of sensed conditions including sensed automatic fluid transmission temperature. The method also includes an automatic transmission fluid temperature regulating mode including measuring an automatic transmission fluid temperature and switching between the cooling mode and the heating mode based measured temperature.

Abstract: A system for heating and cooling the transmission fluid including a heat exchanger adapted to transfer heat between an engine coolant and a transmission fluid and a controller for controlling a valve to place the system into a select one of three modes including a heater core priority mode wherein no engine coolant flows to the heat exchanger, a heating mode wherein hot engine coolant flows directly to the heat exchanger from the engine and a cooling mode wherein cool engine coolant flows directly to the heat exchanger from the radiator, whereby the transmission fluid is heated in an efficient manner with minimal impact on passenger compartment heating.

Abstract: The present disclosure relates to a thermal management system for a vehicle powertrain and a method for heating the transmission. Exemplary thermal management systems include a heater core, a transmission fluid warmer selectively in thermal communication with the heater core, a bypass valve between the heater core and transmission fluid warmer configured to control fluid flow therebetween, a control module configured to control the bypass valve, and a timer linked to the control module configured to delay deactivation of the bypass valve.

Abstract: In a motor vehicle which includes a reservoir for holding fluid, a device for determining whether the fluid level within the reservoir exceeds a desired level, the reservoir having an aperture and a standpipe sealingly engaged with the reservoir at the aperture. The standpipe defines a passage for the flow of excess fluid from the reservoir and a proper fluid level in the reservoir. A plug selectively prevents passage of the fluid through the standpipe out of the reservoir.