A cooling device for a rotating machine that is to be provided in a vehicle. The cooling device includes: (a) an electric oil pump; (b) a control device configured to control operation of the electric oil pump; (c) a cooling oil passage for applying oil outputted by the electric oil pump, to a coil of the rotating machine. The control device is configured to control the operation of the electric oil pump, depending on a pressure difference between a predetermined pressure reference value and an atmospheric pressure value that is detected by an atmospheric pressure sensor.

A passive diverter fitting for a cooling system of an engine includes a base defining an interior cavity, an inlet opening extending through the base that is in fluid communication with the interior cavity, an outlet opening that is in fluid communication with the interior cavity, and a bypass opening that is in fluid communication with the interior cavity. The base is configured to be removably disposed in a cavity of an engine block. The inlet opening is positioned to receive coolant when the passive diverter fitting is disposed in the cavity of the engine block. The outlet opening is in fluid communication with the area exterior to the engine block when the passive diverter fitting is disposed in the cavity of the engine block. The bypass opening is in fluid communication with an interior coolant passage of the engine block when the passive diverter fitting is disposed in the cavity of the engine block.

A lubrication system for an internal combustion engine of a work vehicle includes an engine oil sump and a pump unit fluidly connected to the engine oil sump to receive engine oil therefrom. The pump unit, in turn, includes a first oil pump comprising a variable displacement pump, a second oil pump, a drive line mechanically coupled to the first oil pump and the second oil pump that drives each of the pumps, and a manifold that directs engine oil from the engine oil sump to the first and second oil pumps. A first oil circuit is fluidly coupled to the first oil pump to direct a first flow of engine oil to piston spray jets in the engine and a second oil circuit is fluidly coupled to the second oil pump to direct a second flow of engine oil to one or more oiled engine components in the engine.

A system for fuel and thermal management of fuel delivered to an engine is disclosed. The system includes a supply of fuel in fluid communication with a fuel inlet of the engine, and an oxygen sensor for measuring dissolved oxygen content in the fuel is in fluid communication with the fuel. The fuel is heated by transferring heat from engine oil in a heat exchanger. The temperature of the fuel is controlled by controlling engine oil flow and airflow through another heat exchanger upstream of the fuel/oil heat exchanger on the oil circulation path with engine oil.

A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor configured to drive a motor shaft. A transmission system is connected to receive rotational input power from each of the heat engine shaft and the motor shaft and to convert the rotation input power to output power. A first lubrication/coolant system is connected for circulating a first lubricant/coolant fluid through the heat engine. A second lubricant/coolant system in fluid isolation from the first lubrication/coolant system is connected for circulating a second lubricant/coolant fluid through the electric motor.

Certain exemplary embodiments can provide a system comprising an oil filter adapter constructed to be installed between an engine of a motorcycle and an oil filter of the motorcycle. The oil filter adapter defines an oil inlet aperture and an oil outlet aperture. The system comprises a heat exchanger, which defines an oil inlet port and an oil outlet port.

An apparatus for cooling a high heat-generating vehicle component includes an air compressor assembly operable in a heat-generating mode, in which the air compressor assembly has a relatively low capability to absorb heat energy from a coolant that has passed through a high heat-generating vehicle component. The coolant may be passed through a heat exchanger submerged in an oil reservoir of the air compressor assembly to facilitate the heat exchange. The air compressor assembly can also be operated in a non-heat-generating mode, in which the air compressor assembly has a relatively higher capability to absorb heat energy from the coolant that has passed through the high heat-generating vehicle component.

An oil cooling assembly for an All-Terrain Vehicle (ATV) and a method of improving the efficiency of the ATV's cooling system is provided. The assembly or kit may include a relocating bracket that can be used to affix the original equipment manufacturer (OEM) oil cooler to a front portion of the ATV after the OEM oil cooler is removed from underneath the ATV frame. The kit may include a new reservoir tank that is larger than the OEM oil tank, as the relocation of the OEM oil cooler affords more spaced to accommodate the larger reservoir tank. The kit includes fluid conduits and barbed fittings to fluidly connect the relocated oil cooler to the reservoir tank, the reservoir tank to the motor, and the motor to the relocated oil cooler.

An apparatus for cooling a high heat-generating vehicle component includes an air compressor assembly operable in a heat-generating mode, in which the air compressor assembly has a relatively low capability to absorb heat energy from a coolant that has passed through a high heat-generating vehicle component. The coolant may be passed through a heat exchanger submerged in an oil reservoir of the air compressor assembly to facilitate the heat exchange. The air compressor assembly can also be operated in a non-heat-generating mode, in which the air compressor assembly has a relatively higher capability to absorb heat energy from the coolant that has passed through the high heat-generating vehicle component.

A housing for a drive system. The housing defines a motor cavity, an electronics cold plate, an oil cavity, and a coolant cavity. The coolant cavity defines a first coolant flow path configured to provide cooling to the motor cavity and the oil cavity. The coolant cavity defines a second flow path configured to provide cooling to the motor cavity and the cold plate. The housing defines a coolant inlet and a coolant outlet fluidically coupled to the first coolant flow path and the second coolant flow path, such that the first coolant flow path and the second coolant flow path are parallel fluid paths. In some applications the coolant paths can be connected in series. In some examples, the housing is configured to cause a counter-flow heat exchange between an oil flowing in the oil cavity and a coolant flowing in the first coolant flow path.