Systems, devices, and method are disclosed for differentially cooling an internal combustion engine. A cooling system includes a first cooling circuit configured to lower a temperature of a cooling fluid to a first temperature where the first cooling circuit is configured to dispense a first portion of the cooling fluid to cylinder walls and non-cylinder or non-combustion surfaces of the engine. The cooling system also includes a second cooling circuit configured to lower the temperature of a remaining or second portion of the cooling fluid to a second temperature that is lower than the first temperature where the second cooling circuit is configured to dispense the remaining portion of the cooling fluid to cylinder or combustion surfaces within one or more cylinders of the internal combustion engine.

A lubricant system for supplying lubrication to a component in a turbine engine includes a lubricant reservoir, a supply line fluidly coupling the lubricant reservoir to the component in the turbine engine, a scavenge line fluidly coupling the component to the lubricant reservoir, and a bypass line fluidly coupling the supply line to the scavenge line and bypassing the component.

A heat exchange device includes a heat exchanger body and a thermostatic assembly; the heat exchanger body includes a first passage, one end of the first passage is in communication with the fluid inlet of the heat exchanger body, at least part of the thermostatic assembly is arranged in the first passage, the thermostatic assembly comprises a valve body provided with a valve chamber, the valve body is provided with an inlet, a first outlet, and a second outlet which are all in communication with the valve chamber; a return spring, a shape memory alloy spring, and a valve sleeve are provided in the valve chamber, the valve sleeve is slidable back and forth in an axial direction, the shape memory alloy spring is made of a memory alloy material, and the return spring and the shape memory alloy spring are respectively located on two sides of the valve sleeve.

Methods and systems are provided for controlling engine oil dilution in automotive vehicles. The method comprises heating coolant by operating an exhaust gas heat recovery device and circulating the heated coolant via a first coolant loop between the exhaust gas heat recovery device and a heat exchanger; and heating coolant by operating an exhaust gas recirculation cooler and circulating the heated coolant via a second coolant loop between the exhaust gas recirculation cooler and the heat exchanger, wherein the heated coolant from both the exhaust gas heat recovery device and the exhaust gas recirculation cooler mix at the heat exchanger and allows heating of an engine oil via the heat exchanger. In one example, the method prevents excessive accumulation of water and/or fuel in the engine oil.

Methods and systems are provided for controlling engine oil dilution in automotive vehicles. The method comprises heating coolant by operating an exhaust gas heat recovery device and circulating the heated coolant via a first coolant loop between the exhaust gas heat recovery device and a heat exchanger; and heating coolant by operating an exhaust gas recirculation cooler and circulating the heated coolant via a second coolant loop between the exhaust gas recirculation cooler and the heat exchanger, wherein the heated coolant from both the exhaust gas heat recovery device and the exhaust gas recirculation cooler mix at the heat exchanger and allows heating of an engine oil via the heat exchanger. In one example, the method prevents excessive accumulation of water and/or fuel in the engine oil.

An assembly includes a valve integration unit attached to a transmission oil heater. The valve integration unit includes a valve mechanism and a housing having first to sixth fluid ports for oil input and output. The interior space of the housing has a valve chamber to receive a thermal valve mechanism has a temperature responsive actuator. A bypass flow passage is located outside the heat exchanger and is in fluid communication with oil inlet and outlet manifolds through first and second bypass holes provided in the heat exchanger.

A cooling system includes a fan, a first fluid circuit, and a second fluid circuit. The first fluid circuit includes a first fluid, a first heat exchanger, a first exchanger bypass, and a first thermostat to selectively control flow of the first fluid between the first heat exchanger and the first exchanger bypass. The second fluid circuit is fluidly independent of the first fluid circuit. The second fluid circuit includes a second fluid separate from the first fluid, a second heat exchanger, a second exchanger bypass, and a second thermostat to selectively control flow of the second fluid between the second heat exchanger and the second exchanger bypass. The fan is positioned in proximity to the first heat exchanger and the second heat exchanger to cool the first fluid and the second fluid dependent upon operation of the first thermostat and the second thermostat, respectively.

A cooling system includes a fan, a first fluid circuit, and a second fluid circuit. The first fluid circuit includes a first fluid, a first heat exchanger, a first exchanger bypass, and a first thermostat to selectively control flow of the first fluid between the first heat exchanger and the first exchanger bypass. The second fluid circuit is fluidly independent of the first fluid circuit. The second fluid circuit includes a second fluid separate from the first fluid, a second heat exchanger, a second exchanger bypass, and a second thermostat to selectively control flow of the second fluid between the second heat exchanger and the second exchanger bypass. The fan is positioned in proximity to the first heat exchanger and the second heat exchanger to cool the first fluid and the second fluid dependent upon operation of the first thermostat and the second thermostat, respectively

A lubrication circuit for a gas turbine engine comprises a heat exchanger having an inlet pipe which carries a flow of lubricant to the heat exchanger; a heater configured to heat lubricant to produce a flow of heated lubricant to be provided to the heat exchanger; and a sensor operable to measure a measured parameter from which it can be determined whether the lubricant requires heating.

A thermostatic valve, including: a pressure relief ring capable of moving up and down and disposed in a valve body cavity. In normal conditions, the pressure relief ring is abutted against the outer edge of a first valve seat via a spring. An internal channel capable of being opened or closed via up and down movement of the pressure relief ring is further provided in the valve body cavity; when the pressure of a fluid in the thermostatic valve is excessive, the fluid can drive the pressure relief ring to compress the spring, such that the internal channel is in communication with a third interface to realize simultaneous communication with a first flow channel and a third flow channel.