Provided is a downsizable valve unit. A valve unit 1 includes a valve case 4 including a valve case main body 4A where a thermo valve 2 is housed and a valve seat 4Aa which a valve body 2b unseats from and seats on is formed, and a sleeve 4B formed protruding outward from the valve case main body 4A; a sub-flow path R2 formed to include a cooling water storage chamber S formed inside the sleeve 4B, a lead-out passage 4Ae communicating the upstream side of the valve seat 4Aa in the valve case main body 4A with the cooling water storage chamber S, and a lead-in passage 4Af communicating the downstream side of the valve seat 4Aa in the valve case main body 4A with the cooling water storage chamber S; and a sub-valve 3 attached to a sleeve 4B to open and close a sub-flow path R2.

A lubricating system of an engine equipped with an idle reduction system includes an oil cooler, a remotely operable valve configured to open and close a bypass passage that bypasses the oil cooler, and an electronic control unit. The electronic control unit is configured to perform the steps of: controlling the valve so that a temperature of lubricating oil approaches a target temperature; and lowering the target temperature when an average torque of the engine is less than a predetermined threshold.

A lubricating system of an engine equipped with an idle reduction system includes an oil cooler, a remotely operable valve configured to open and close a bypass passage that bypasses the oil cooler, and an electronic control unit. The electronic control unit is configured to perform the steps of: controlling the valve so that a temperature of lubricating oil approaches a target temperature; and lowering the target temperature when an average torque of the engine is less than a predetermined threshold.

Various disclosed embodiments include oil systems, electric motors, and vehicles. In an illustrative embodiment an electrical motor system includes an oil reservoir, a motor, and an oil delivery system. The oil reservoir is configured to hold oil therein. The oil delivery system includes a heat exchanger. The oil delivery system is configured to operate in a low-temperature mode, bypassing the heat exchanger, while the oil temperature is below a first predetermined temperature; operate in a high-temperature mode, directing oil traversing the oil delivery system through the heat exchanger while the oil temperature is above a second predetermined temperature; and operate in an intermediate-temperature mode, partially bypassing the heat exchanger while the oil temperature is between the first predetermined temperature and the second predetermined temperature.

A coolant control valve is provided that includes at least one actuator, a first rotary valve body and a second rotary valve body, each rotary valve body driveably connected to the at least one actuator. The second rotary valve body is arranged non-coaxially to the first rotary valve body.

A mixing valve has a housing with a first inlet, a second inlet, a first outlet and a second outlet, and has a valve element arranged adjustably in the housing, and which valve element has a first fluid passage which, in a first position of the valve element, connects the first inlet and first outlet, in a second position of the valve element, connects the first inlet and second outlet, and in a third position of the valve element, connects the first inlet to the first outlet and second outlet, and which valve element has a second fluid passage which, in the first position of the valve element, connects the second inlet and second outlet, in the second position of the valve element, connects the second inlet and first outlet, and, in the third position of the valve element, connects the second inlet to the first outlet and second outlet.

A controller includes at least one processor coupled to a memory storing instructions that, when executed by the at least one processor, cause the at least one processor to: determine a target engine outlet coolant temperature for a coolant in an engine system; determine an adjustment to a temperature of the coolant based on a determined engine inlet coolant temperature and the target engine outlet coolant temperature; and, alter a flow of the coolant by controlling a coolant valve in response to the determination of the adjustment to the temperature of the coolant.

A multi-way coolant valve and a heat pump system having the same include an external housing in which first, second and third external inlets and first, second and third external outlets are formed; and an internal housing provided rotatably inside the external housing to selectively fluidically-connect the first, second and third external inlets, and the first, second and third external outlets, and divided into two stages through which a coolant flows respectively, wherein as the internal housing rotates at a predetermined interval in a selected mode of the vehicle, the first external inlet selectively fluidically-communicates with the first external outlet, the second external outlet, or the third external outlet, the second external inlet selectively fluidically-communicates with the first external outlet or the second external outlet, and the third external inlet selectively fluidically-communicates with the first external outlet, the second external outlet, or the third external outlet.

Disclosed herein is an integrated reservoir tank assembly for a vehicle. The integrated reservoir tank assembly for a vehicle includes an integrated reservoir tank in which an inner space is partitioned into a first chamber configured to store cooling water of a first cooling circuit and a second chamber configured to store cooling water of a second cooling circuit by a partition wall; a first electric water pump integrally coupled to the first chamber of the integrated reservoir tank and configured to transmit the cooling water stored in the first chamber along a cooling water line of the first cooling circuit; and a second electric water pump integrally coupled to the second chamber of the integrated reservoir tank and configured to transmit the cooling water stored in the second chamber along a cooling water line of the second cooling circuit.

A deaeration valve includes a housing and a ball in fluid communication with housing. The ball can include a body, a seat defining a bleed passage therein, and a deaeration pin slidably disposed within the bleed passage. Further, the deaeration pin may include a head, a retention feature, and a shaft positioned between the head and the retention feature.