An engine coolant separator may include a housing having an inlet and an outlet; and a guide member fixedly mounted inside the housing, and having a spiral channel inducing a spiral flow of an engine coolant, wherein the spiral channel communicates with the inlet of the housing.

An engine coolant separator may include a housing having an inlet and an outlet; and a guide member fixedly mounted inside the housing, and having a spiral channel inducing a spiral flow of an engine coolant, wherein the spiral channel communicates with the inlet of the housing.

A distributed cooling system is disclosed. The system may include a first radiator to circulate a liquid coolant through the first radiator to cool the liquid coolant, a first fan, electrically connected to the first radiator, to facilitate cooling the liquid coolant, and a first temperature sensor to obtain first temperature data concerning the liquid coolant. The system may include a second radiator to circulate an oil through the second radiator to cool the oil, a second fan, electrically connected to the second radiator, to facilitate cooling the oil, and a second temperature sensor to obtain second temperature data concerning the oil. The system may include a heat exchanger to cool the liquid coolant and the oil and a controller, electrically connected to the first fan, the first temperature sensor, the second fan, and the second temperature sensor, to control the first fan and the second fan.

The transparent radiator hose is configured for use with the engine cooling system of a vehicle. The transparent radiator hose diagnoses the interchange of the cooling fluid pumped through the engine cooling system with a system fluid selected from the group consisting of the engine oil, the transmission fluid, and the power steering fluid. The transparent radiator hose comprises a modified radiator hose, a plurality of tracer dyes and an ultraviolet lamp. Each tracer dye is a fluorescent compound. There is a one to one relationship between the plurality of tracer dyes and the group consisting of the engine oil, the transmission fluid, and the power steering fluid. The modified radiator hose transports the cooling fluid used to cool the combustion engine. The modified radiator hose is partially transparent such that the cooling fluid can be seen through the modified radiator hose. The ultraviolet lamp generates ultraviolet radiation.

The transparent radiator hose is configured for use with the engine cooling system of a vehicle. The transparent radiator hose diagnoses the interchange of the cooling fluid pumped through the engine cooling system with a system fluid selected from the group consisting of the engine oil, the transmission fluid, and the power steering fluid. The transparent radiator hose comprises a modified radiator hose, a plurality of tracer dyes and an ultraviolet lamp. Each tracer dye is a fluorescent compound. There is a one to one relationship between the plurality of tracer dyes and the group consisting of the engine oil, the transmission fluid, and the power steering fluid. The modified radiator hose transports the cooling fluid used to cool the combustion engine. The modified radiator hose is partially transparent such that the cooling fluid can be seen through the modified radiator hose. The ultraviolet lamp generates ultraviolet radiation.

A waste heat recovery (WHR) and coolant system with active coolant pressure control includes an engine cooling system, a WHR system, and a coolant pressure control system. A coolant heat exchanger positioned along each of the engine cooling and working fluid circuits, and is structured to transfer heat from the coolant fluid to the working fluid. The coolant pressure control system includes a pressure line operatively coupled to an air brake system and to the coolant tank. A valve is coupled to the pressure line upstream of the coolant tank. A coolant pressure controller is in operative communication with each of the valve, an air pressure sensor, and a coolant temperature sensor. The coolant pressure controller is structured to determine a target coolant pressure based on a coolant temperature and control a valve position of the valve so as to cause the air pressure to approach the target coolant pressure.

A waste heat recovery (WHR) and coolant system with active coolant pressure control includes an engine cooling system, a WHR system, and a coolant pressure control system. A coolant heat exchanger positioned along each of the engine cooling and working fluid circuits, and is structured to transfer heat from the coolant fluid to the working fluid. The coolant pressure control system includes a pressure line operatively coupled to an air brake system and to the coolant tank. A valve is coupled to the pressure line upstream of the coolant tank. A coolant pressure controller is in operative communication with each of the valve, an air pressure sensor, and a coolant temperature sensor. The coolant pressure controller is structured to determine a target coolant pressure based on a coolant temperature and control a valve position of the valve so as to cause the air pressure to approach the target coolant pressure.

A motorized working apparatus includes a housing having an air inlet, an air guide leading from the air inlet into the housing, and an air filter which is curved hood-shaped outwardly and covers the air inlet of the housing. The air filter includes a filter frame body with a filter-fabric-free air outlet face facing the air inlet of the housing and with a window frame structure protruding over the filter-fabric-free air outlet face and having at least one window region. A filter fabric occupies the at least one window region, and a fixation releasably fixes the filter frame body to the housing. The window frame structure has frame webs which delimit the at least one window region and which protrude relative to the filter fabric towards an air supply side in the at least one window region and include web side edges which run sloping at an obtuse angle relative to adjacent window planes, and/or the fixation includes a pre-fixing clamping holding arrangement and a final fixing holding arrangement which are independent of each other, and/or the window frame structure of the air filter protrudes over the filter-fabric-free air outlet face in the shape of a roof with a triangular cross-sectional form.

A heat exchanger arrangement includes a heat exchanger having a front, a rear, and a side between the front and the rear, a fan arranged to direct an airflow from the front to the rear of the heat exchanger, and a screen disposed over at least the front and side of the heat exchanger and attached to a structure at or behind the rear of the heat exchanger.

A filter element sensor module having a housing, a sidewall of the housing including a recessed portion. The sensor module including a sensor assembly being provided within the housing about a sensor port interface being provided at one end of the housing. The sensor module also including processing circuitry being configured to receive signals from the sensor assembly and communication module, the communication module being configured to transmit one or more sensed parameters from the sensor assembly.