Some exemplary embodiments include an electrically driven cooling system for cooling non-engine components of a vehicle. The electrically driven cooling system includes a closed loop coolant flowpath including an electrically driven coolant pump and a radiator connected to the closed loop coolant flowpath, and one or more components connected in parallel and/or in series in the closed loop coolant flow path that receives the coolant. An electrically driven radiator fan is also operable to cool the coolant in the radiator. The electrically driven cooling system is flow isolated from any mechanically driven cooling system that provides coolant to the engine for vehicles that include an engine.

Methods and systems are provided for regulating coolant flow in a vehicle cooling system during an engine startup event. In one example, a method may include, during an engine startup event, controlling a flowpath of an engine coolant in a vehicle cooling system via a passive valve and an actively regulatable valve, and responsive to an engine coolant temperature below a threshold at the engine startup event, isolating the flowpath of engine coolant to a subsection of the cooling system to enable rapid warming of the engine coolant without stagnating the engine coolant at an engine. In this way, engine coolant may be rapidly warmed at an engine startup event, via coolant flow isolation, rather than coolant flow stagnation, which may decrease uneven heating of engine system components, and which may thus prolong a functional lifetime of the engine system.

A temperature control system for an engine. The system includes a thermal storage expansion tank defining a thermally insulated interior volume for storing engine coolant. The system further includes a pump that pumps engine coolant that has exited the thermal storage expansion tank back into the thermally insulated interior volume of the thermal storage expansion tank and forces air out of the thermal storage expansion tank to store coolant in the thermally insulated interior volume when the engine is off.

An engine temperature control system is provided for heating and/or cooling engine fluids to resist deviation of the temperature of these fluids from a temperature range wherein optimal fluid performance is achieved. Some examples of the temperature control system provide for preheating fluids such as coolant, lubricant, or diesel exhaust fluid prior to starting the engine. Other examples of the temperature control system provide for improved cooling of lubricants utilized for high heat generating components such as turbochargers, continuing cooling of these fluids after the engine is stopped.

A device seating a valve body with the aid of an urging force of a spring by stopping the operation of a pump, changes over an energization state of a coil of at least one of the liquid shutoff valves which is changed over to the closed-valve state where the coil is energized, and then resumes the operation of the pump. Upon detecting the start of operation of the pump, a valve control unit causes a pump control unit to perform opening-closing force-feed control, where an amount of the cooling liquid force-fed by the pump is set to an amount within such a range that the valve body of the liquid shutoff valves whose coil is energized is not displaced in a valve-opening direction while the valve body of the liquid shutoff valves whose coil is not energized is displaced in the valve-opening direction.

A cooling system selectively cools an engine and an exhaust gas recirculation (EGR) component of the engine. The cooling system includes a plumbing system with a plurality of flow branches, including an engine branch, an EGR branch, and a feed branch. The engine branch defines an engine flow passage through which the coolant flows to cool the engine. The EGR branch defines an EGR flow passage through which the coolant flows to cool the EGR component. The feed branch defines a feed flow passage. The cooling system has a first operating configuration in which the EGR flow passage is configured to receive coolant flow from the engine flow passage. The cooling system has a second operating configuration in which the EGR flow passage is configured to receive coolant flow from the feed flow passage instead of the engine flow passage.

A heat pump and a heater core are provided at a heating coolant water circuit connected to an engine. As heating thermal amount control, the control of decreasing the output of the heat pump and increasing the output of the engine with an increase in an engine outlet water temperature detected by an engine outlet water temperature sensor, thereby ensuring a target heating thermal amount. Thus, in response to a decrease in a heat generation efficiency of the heat pump with an increase in the engine outlet water temperature, the output of the heat pump is decreased so that fuel economy can be improved while the output of the engine is increased so that the target heating thermal amount can be ensured.

Examples of techniques for controlling coolant flow in a vehicle cooling system for an internal combustion engine using a secondary coolant pump are provided. In one example implementation, a computer-implemented method includes receiving, by a processing device, engine operation data about the internal combustion engine. The method further includes detecting, by the processing device, a shutdown of the internal combustion engine. The method further includes calculating, by the processing device, an engine flow based at least in part on the block flow request and the head flow request. The method further includes, subsequent to detecting the shutdown of the internal combustion engine determining, by the processing device, an after-run condition based at least in part on the engine operation data. The method further includes activating, by the processing device, a secondary coolant pump based at least in part on determining the after-run condition.

An electric motor vehicle auxiliary unit includes an electronically commutated drive motor comprising motor coils and an electronic commutator arrangement which energizes the motor coils. The electronic commutator arrangement includes a control unit, multiple power semiconductors each of which is controlled by the control unit, a motor current path, a motor current tap arranged in a course of the motor current path, and a high-pass filter arranged between the motor current tap and the control unit. The motor current tap is arranged so that a voltage signal proportional to a motor current IM drops at the motor current tap during a motor energization. The high-pass filter includes an input signal and an output signal. The input signal is the voltage signal and the output signal is a control signal for the control unit. The high-pass filter triggers a pole reversal after a delay following an input of a peak signal.

A method for improving the cold start capacity of an internal combustion engine which is cooled with water that is pre-heated for the cold start. The pre-heated hot water is conducted through flow paths in a region of the crankcase ventilating device and/or in a water/air heat exchanger of the crankcase ventilating device. An internal combustion engine with at least one cooling water circuit, at least one cooling water pump which is arranged in the cooling water circuit, and at least one crankcase ventilating device. The crankcase ventilating device is at least temporarily integrated into the cooling water circuit of the internal combustion engine, and the cooling water circuit has a pre-heating assembly for pre-heating the cooling water when the internal combustion engine is cold started.