Abstract: A system includes a coolant pump and a first rotary valve. The coolant pump is configured to be mechanically driven by an engine and to send coolant to an inlet of the engine. The first rotary valve is configured to receive coolant from an outlet of the engine and to send coolant to a first radiator and a heater core. The first rotary valve is adjustable to a zero flow position to prevent coolant flow to the first radiator and the heater core and thereby increase a rate at which the engine warms coolant flowing therethrough.

Abstract: A method for thermal management of a motor vehicle engine includes one or more of the following: determining a current lube oil temperature; determining a lube oil temperature for optimal friction; turning on piston cooling jets based on the current lube oil temperature and the lube oil temperature for optimal friction; and turning off the piston cooling jets.

Abstract: A method for thermal management of a motor vehicle engine includes one or more of the following: determining a current lube oil temperature; determining a lube oil temperature for optimal friction; turning on piston cooling jets based on the current lube oil temperature and the lube oil temperature for optimal friction; and turning off the piston cooling jets.

Abstract: A system includes a coolant pump and a first rotary valve. The coolant pump is configured to be mechanically driven by an engine and to send coolant to an inlet of the engine. The first rotary valve is configured to receive coolant from an outlet of the engine and to send coolant to a first radiator and a heater core. The first rotary valve is adjustable to a zero flow position to prevent coolant flow to the first radiator and the heater core and thereby increase a rate at which the engine warms coolant flowing therethrough.

Abstract: A method includes: (a) determining an engine speed of an internal combustion engine, wherein the internal combustion engine has an engine wall, and the engine wall has a wall temperature; (b) determining an engine load of the internal combustion engine; (c) determining a wall-reference temperature as a function of the engine load and the engine speed of the internal combustion engine; and (d) adjusting, using a cooling system, a volumetric flow rate of a coolant flowing through the internal combustion engine to maintain the wall temperature at the wall-reference temperature.

Abstract: A system for controlling fluid temperature includes a heat source, a heat sink coupled to the heat source such that a flow of coolant passes between the heat source and the heat sink, a first heat exchanger coupled to the heat source, a second heat exchanger coupled to the heat source, a valve coupled to the heat source, the first heat exchanger, the second heat exchanger, and the heat sink, the valve configured to regulate the flow of coolant between the heat source, the first heat exchanger, the second heat exchanger, and the heat sink, and a controller in electronic communication with the heat source and the valve. The controller is configured to determine an operating condition and generate a control signal to control the valve to direct the flow of coolant to one or more of the first and second heat exchangers and the heat source.

Abstract: A method includes: (a) determining an engine speed of an internal combustion engine, wherein the internal combustion engine has an engine wall, and the engine wall has a wall temperature; (b) determining an engine load of the internal combustion engine; (c) determining a wall-reference temperature as a function of the engine load and the engine speed of the internal combustion engine; and (d) adjusting, using a cooling system, a volumetric flow rate of a coolant flowing through the internal combustion engine to maintain the wall temperature at the wall-reference temperature.

Abstract: The present disclosure provides an engine cooling system for controlling the temperature of an engine of a motor vehicle. The system includes an engine cooling circuit for circulating a coolant to transfer heat from the engine to an airflow. An electric water pump is configured to circulate the coolant through the circuit at a maximum electric pump flow rate, and a mechanical water pump is configured to circulate the coolant through the circuit at a maximum mechanical pump flow rate that is higher than the maximum electric pump flow rate. The circuit further includes a selector valve configured to fluidly connect one of the electric water pump and the mechanical water pump to the engine. An engine control module generates a valve signal for actuating the selector valve to fluidly connect one of the electric water pump and the mechanical water pump to the engine.

Abstract: The present disclosure provides an engine cooling system for controlling the temperature of an engine of a motor vehicle. The system includes an engine cooling circuit for circulating a coolant to transfer heat from the engine to an airflow. An electric water pump is configured to circulate the coolant through the circuit at a maximum electric pump flow rate, and a mechanical water pump is configured to circulate the coolant through the circuit at a maximum mechanical pump flow rate that is higher than the maximum electric pump flow rate. The circuit further includes a selector valve configured to fluidly connect one of the electric water pump and the mechanical water pump to the engine. An engine control module generates a valve signal for actuating the selector valve to fluidly connect one of the electric water pump and the mechanical water pump to the engine.

Abstract: A control system according to the principles of the present disclosure includes an estimated coolant flow module and at least one of a valve control module and a pump control module. The estimated coolant flow module estimates a rate of coolant flow through a cooling system for an engine based on a pressure of coolant in the cooling system and a speed of a coolant pump that circulates coolant through the cooling system. The valve control module controls the position of a coolant valve based on the estimated coolant flow rate. The pump control module controls the coolant pump speed based on the estimated coolant flow rate.

Abstract: A strategy for controlling an electric pump and control valve in an internal combustion engine cooling system compensates for backpressure variations and maintains system operation within design parameters. The method comprises the steps of measuring the coolant temperature, measuring the electrical current and voltage to the pump motor, determining the pump speed and coolant flow, determining the desired coolant flow, determining a negative correction to the flow control valve and pump if desired flow is less than present coolant flow and determining a positive correction to the flow control valve and pump if desired flow is more than present coolant flow and undertaking this correction to coolant flow. Thus, based upon inferred back pressure in the engine coolant system from the data relating to the pump energy input, proper coolant flow, heat rejection and engine operating temperature can be maintained in spite of variations in system flow restrictions and backpressure.

Abstract: A system including startup, load, flow, and peak estimation modules. The startup module, during a startup period or in response to a startup of the engine, receives a temperature signal and generates a first condition signal. The load module determines a load on the engine and generates a second condition signal. The flow module, if the first condition signal indicates a temperature of the engine is less than a first predetermined temperature and if the second condition signal indicates the load is less than a predetermined threshold, operates a pump to circulate coolant during the startup period. The peak estimation module estimates a temperature of a hottest metal location on the engine. The flow module increases a speed of the pump if the temperature of the hottest metal location is greater than a second predetermined temperature or the load is greater than or equal to the predetermined threshold.

Abstract: A charge air cooler (CAC) includes a first header including a first interior portion, a second header spaced from the first header. The second header includes a second interior portion. At least one conduit extends between the first header and the second header. The at least one conduit includes a first end fluidically connected to the first interior portion, a second end fluidically connected to the second interior portion, and an intermediate portion extending therebetween. A heating system is arranged in a heat exchange relationship with the at least one conduit. The heating system is selectively operable to increase a temperature of fluids passing through the at least one conduit into one of the first and second headers.

Abstract: A system according to the principles of the present disclosure includes a transmission fluid temperature sensor and a coolant valve control module. The transmission fluid temperature sensor measures a temperature of transmission fluid that is circulated through a transmission. The coolant valve control module controls at least one coolant valve to adjust coolant flow from an engine to a transmission fluid heat exchanger and at least one of a radiator, an engine oil heat exchanger, and a heater core. When the transmission fluid temperature is less than a first temperature, the coolant valve control module controls the at least one coolant valve to allow coolant flow from the engine to the transmission fluid heat exchanger and prevent coolant flow from the engine to the at least one of the radiator, the engine oil heat exchanger, and the heater core.

Abstract: A charge air cooler (CAC) includes a first header including a first interior portion, a second header spaced from the first header. The second header includes a second interior portion. At least one conduit extends between the first header and the second header. The at least one conduit includes a first end fluidically connected to the first interior portion, a second end fluidically connected to the second interior portion, and an intermediate portion extending therebetween. A heating system is arranged in a heat exchange relationship with the at least one conduit. The heating system is selectively operable to increase a temperature of fluids passing through the at least one conduit into one of the first and second headers.

Abstract: A system according to the principles of the present disclosure includes a transmission fluid temperature sensor and a coolant valve control module. The transmission fluid temperature sensor measures a temperature of transmission fluid that is circulated through a transmission. The coolant valve control module controls at least one coolant valve to adjust coolant flow from an engine to a transmission fluid heat exchanger and at least one of a radiator, an engine oil heat exchanger, and a heater core. When the transmission fluid temperature is less than a first temperature, the coolant valve control module controls the at least one coolant valve to allow coolant flow from the engine to the transmission fluid heat exchanger and prevent coolant flow from the engine to the at least one of the radiator, the engine oil heat exchanger, and the heater core.

Abstract: A vehicle having an air intake system includes a charge air cooler, an intake duct, an outlet duct, and a bypass duct. The charge air cooler has a charge air inlet that is disposed at a first end of a charge air cooler core and a charge air outlet that is disposed at a second end of the charge air cooler core. The intake duct extends between an outlet of a turbocharger and the charge air inlet. The outlet duct extends between the charge air outlet and a throttle body having a throttle body valve that is operatively connected to an engine intake manifold. The bypass duct has a bypass valve. The bypass duct is connected to the charge air inlet and the charge air outlet. The bypass valve is configured to selectively facilitate bypass flow through the bypass duct.

Abstract: A strategy for controlling an electric pump and control valve in an internal combustion engine cooling system compensates for backpressure variations and maintains system operation within design parameters. The method comprises the steps of measuring the coolant temperature, measuring the electrical current and voltage to the pump motor, determining the pump speed and coolant flow, determining the desired coolant flow, determining a negative correction to the flow control valve and pump if desired flow is less than present coolant flow and determining a positive correction to the flow control valve and pump if desired flow is more than present coolant flow and undertaking this correction to coolant flow. Thus, based upon inferred back pressure in the engine coolant system from the data relating to the pump energy input, proper coolant flow, heat rejection and engine operating temperature can be maintained in spite of variations in system flow restrictions and backpressure.

Abstract: A vapor purge system for an engine, includes a purge valve having a housing including an input port in communication with a purge canister and including an output port in communication with an intake system component defining a first bore portion receiving the output port with a first seal member disposed therebetween. The intake system component includes a second bore portion receiving a housing portion of the purge valve with a second seal member disposed therebetween. The first and second seal members are spaced such that when the housing is pulled away from the intake system component and the first seal member is out of engagement between the first bore and the output port, the second seal member can remain in engagement so that a diagnostic module can diagnose detachment of the purge valve from the intake system before any hydrocarbon vapor can be released into the atmosphere.

Abstract: A system according to the principles of the present disclosure includes an engine start module and an exhaust throttle valve control module. The engine start module determines when an engine is started based on at least one of an input from an ignition system and the speed of the engine. The exhaust throttle valve control module selectively fully closes an exhaust throttle valve in an exhaust system of the engine when the engine is started to trap exhaust gas in the exhaust system.