Abstract: A system and method for managing the characteristics of engine oil in a lubrication system for an internal combustion engine is disclosed. Generally speaking, the method includes the steps of determining a target viscosity for the engine oil based on engine speed and engine load, determining a working viscosity which may be directly measured or determined based on engine oil temperature and engine oil type, comparing the target viscosity to the working viscosity, deriving a target engine oil temperature, and directing engine oil to one of an oil cooler, an oil heater, or neither when and until the target engine oil temperature is achieved.

Abstract: An engine oil system for an internal combustion engine comprises an electronic control module, an oil viscosity sensor, am engine oil cooler, and an oil cooler flow control valve. The oil viscosity sensor is disposed in communication with the electronic control module. The electronic control module determines a viscosity of oil within the engine oil system based upon an output of the oil viscosity sensor. The oil cooler flow control valve is disposed in communication with the electronic control module. The oil cooler flow control valve is positionable between an open and closed position to regulate coolant flow to the engine oil cooler based upon an output of the electronic control module. The electronic control module moves the oil cooler flow control valve based upon the determined viscosity of the oil.

Abstract: A system and method for managing the characteristics of engine oil in a lubrication system for an internal combustion engine is disclosed. Generally speaking, the method includes the steps of determining a target viscosity for the engine oil based on engine speed and engine load, determining a working viscosity which may be directly measured or determined based on engine oil temperature and engine oil type, comparing the target viscosity to the working viscosity, deriving a target engine oil temperature, and directing engine oil to one of an oil cooler, an oil heater, or neither when and until the target engine oil temperature is achieved.

Abstract: An engine oil system for an internal combustion engine comprises an electronic control module, an oil viscosity sensor, am engine oil cooler, and an oil cooler flow control valve. The oil viscosity sensor is disposed in communication with the electronic control module. The electronic control module determines a viscosity of oil within the engine oil system based upon an output of the oil viscosity sensor. The oil cooler flow control valve is disposed in communication with the electronic control module. The oil cooler flow control valve is positionable between an open and closed position to regulate coolant flow to the engine oil cooler based upon an output of the electronic control module. The electronic control module moves the oil cooler flow control valve based upon the determined viscosity of the oil.

Abstract: The exhaust gas recirculation system which includes a diverter valve system for selectively directing recirculated gas through an aftercooler includes a self regenerating catalyzed particulate filter which is positioned upstream of the aftercooler of the system to prevent soot from accumulating on the heat exchange surfaces of the aftercooler. Removal of the soot from the exhaust gas increases efficiency and longevity of the aftercooler.