Abstract: A vehicle thermal management system includes an exhaust gas cooler configured to receive exhaust gas from the engine and to cool the exhaust gas before it is recirculated back into the engine. A valve is located downstream from the exhaust gas cooler, and is operable to control the amount of exhaust gas passing through the exhaust gas cooler. Intake air mixes with the exhaust gas downstream from the first valve. The mixed gas is then cooled by a mixed gas cooler before it enters the engine intake manifold. A coolant is circulated through the mixed gas cooler and a heat exchanger. The mixed gas rejects heat to the coolant via the mixed gas cooler, and the coolant rejects heat to the ambient air via the heat exchanger.

Abstract: A fluid valve for use in proportioning/mixing fluid between at least one input and at least one output. The fluid valve including a rotary actuated diverter for controlling fluid flow between the inlet(s) and outlet(s). The fluid valve may be configured to support proportioning any number of fluids, including liquids and gases, for any number of applications, including automotive and industrial applications.

Abstract: A cooling system for cooling a plurality of heat producing systems includes a heat exchanger having a plurality of cooling zones, each of which has a respective inlet and outlet for facilitating flow of a respective temperature control fluid therethrough. Each of the respective temperature control fluids facilitates temperature control of a respective heat producing system. A plurality of fans cool the temperature control fluids flowing through the heat exchanger, and a fan or fans are disposed proximate each zone of the heat exchanger to provide air flow substantially independently from the air flow over the other cooling zones.

Abstract: A fluid valve for use in proportioning/mixing fluid between at least one input and at least one output. The fluid valve including a rotary actuated diverter for controlling fluid flow between the inlet(s) and outlet(s). The fluid valve may be configured to support proportioning any number of fluids, including liquids and gases, for any number of applications, including automotive and industrial applications.

Abstract: A vehicle thermal management system includes a temperature control fluid for controlling the temperature of at least a portion of a vehicle system. A pump is configured to pump the temperature control fluid through a heat exchanger to facilitate the transfer of heat between the temperature control fluid and ambient air. A fan is operable to move the ambient air across the heat exchanger to facilitate increased heat transfer. A control system is used to control operation of the pump and the fan. The control system is provided with operation data that includes optimized operating speeds for the pump and the fan to minimize power consumption, while maximizing heat transfer.

Abstract: An internal combustion engine is provided with a mechanism to release engine compression at low speeds thereby facilitating starting of the engine. The engine has an exhaust valve which is operated by a valve lifter following a cam surface. A cam pin positioned within a seat in that cam surface in a manner which allows the pin to rotate. A drive pin extends orthogonally from the cam pin and passes through an aperture within a flyweight. The flyweight causes a rotation of the cam pin in response to engine speed. At relatively low engine speeds an eccentric portion of the cam pin extends above the cam surface so as to engage the valve lifter producing an opening of the exhaust valve during the compression portion of the engine cycle. At higher engine speeds the cam pin is rotated so that the eccentric portion of the cam pin no longer extends above the cam surface so that the exhaust valve is not opened during the engine compression. This operation produces a release of the compression at lower engine speeds.

Abstract: An engine intake screen assembly is provided. A rotatable screen has a continuous peripheral skirt which telescopes with an upstanding housing ring-like flange so as to create a serpentine entry path for grass and other foreign matter trying to enter at the seam between the screen and the inlet. Entry can be further restricted through the use of a radially outwardly directed ring extension on the screen and/or a guard ring member. These parts can combine to form a trap pocket and/or to increase the serpentine nature of the entry path. In one version, the grass will form its own seal in the trap.