Abstract: A plate and fin type heat exchanger is provided with an improved mounting arrangement for mounting the heat exchanger, for example, within the intake manifold of a combustion engine for use as a charge air cooler. A plurality of threaded nuts are secured as by welding at predetermined points at the inboard sides of the heat exchanger side plates for receiving bolts passed through aligned bolt-receiving holes in the intake manifold and side plates to secure the heat exchanger in place, thereby providing a mounting arrangement permitting the heat exchanger to occupy substantially the entire cross-sectional area of the intake manifold for optimized heat transfer capacity.

Abstract: A means of evenly distributing the air flow through the core of an intercooler across the total cooling surface of the core.

Abstract: A charge air cooling assembly in which water pressurized by air at reduced pressure from the air brake system of a vehicle powered by a two or four cycle Diesel engine is discharged intermittently as a spray into the intake or discharge of a turbo-compressor, in response to the demand pressure on the intake manifold of an engine to lower the rate of fuel consumption of the latter and increase the torque and power output of the engine.

Abstract: Apparatus for injecting coolant into the fuel-air mixture supplied to a turbocharged internal combustion engine in which coolant is stored in a reservoir that is connected to the outlet side of a turbocharger compressor and is pressurized during times that the turbocharger is generating positive pressures above a predetermined level. The pressure in the reservoir forces coolant to the inlet side of the turbocharger to cool fuel and injection is interrupted when the pressures are below that level and cooling of the fuel-air mixture is not required.

Abstract: A charge air cooler is provided for mounting within the intake manifold of a combustion engine. The charge air cooler comprises a heat exchanger core formed by a plurality of relatively lightweight heat transfer elements defining a first flow path for charge air prior to ingestion of the charge air by the engine and a second flow path for a coolant in heat transfer relation with the charge air. The heat exchanger core supports at least one transversely extending rigid mounting sleeve for receiving a mounting bolt passed through a bolt-receiving hole in the intake manifold to secure the charge air cooler within the intake manifold.

Abstract: In an intake system for an internal combustion engine having a supercharger, there are provided a first air passage and a second air passage each for conducting air from the supercharger to the engine. An air cooler is disposed in the first air passage to supply the engine with cooled air, but the second air passage leads air directly from the supercharger to the engine without cooling the air. The air flow rates in the first and the second air passages are controlled by suitable control means to supply the engine with intake air of an appropriate temperature. The control means is intended to restrict the air flow in the first air passage at low engine load to prevent the intake air from being cooled excessively. Preferably the control means is a throttle valve device which comprises a primary throttle valve disposed in a primary throttle bore communicating with the second air passage, and a secondary throttle valve disposed in a secondary throttle bore communicating with the first air passage.

Abstract: A two-circuit cooling system for an internal combustion engine including first and second fluid circuits. The first fluid circuit includes a radiator and a liquid cooled heat source while the second circuit includes a radiator and an air-to-liquid heat exchanger. A fluid pump is connected across the two circuits and facilitates independent movement of the coolant through the two separate circuits. The pump accomplishes this by using an impeller member having multiple vanes on two opposite surfaces which are of different configuration and which are divided by a wall which cooperates with the housing to form two separate fluid chambers.

Abstract: A cooling system for a charge air combustion engine comprising series-mounted heat exchangers for two stage cooling of charge air supplied to the engine. A first stage charge air cooler heat exchanger is coupled into an engine-radiator liquid cooling system in series with the radiator and in parallel with the engine for passage of a portion of the liquid coolant at a first temperature level for first stage cooling of the charge air. A second charge air cooler heat exchanger is supplied with liquid coolant at a second, relatively lower temperature level for second stage cooling of the charge air.

Abstract: A charge air cooler for mounting within the intake manifold of a combustion engine. A pair of U-shaped mounting brackets are secured to opposite sides of the charge air cooler, and these brackets carry floating nuts for receiving bolts for mounting the charge air cooler securely within the intake manifold.

Abstract: A cooling system for an air cooled vehicle drive having a supercharged internal combustion engine, a transmission, a hydrodynamic brake (retarder), and a plurality of heat exchangers. The media which are to be cooled are at least partially in mutual heat exchange. Cooling oil or fluid ducts for the retarder or transmission oil and/or lubricating oil of the internal combustion engine pass entirely or at least partially through a supercharger intercooler or charging air cooler. The retarder or lubricating oil is cooled in a heat exchanger which is acted upon by cooling air.

Abstract: An intercooler mounted on the cylinder head with an intake manifold of an internal combustion engine. The intake manifold and cylinder head are adapted for fastening together for operation with or without the intercooler mounted between the manifold and the cylinder head. The use of a sandwich type intercooler arrangement permits use of standard components of the manifold or engine head with the optional use of the intercooler as a turbocharged engine or without as a naturally aspirated engine.