Abstract: A system for the air-conditioning of the interior of a motor vehicle having an engine cooling circuit is provided which has a water/air heat exchanger and a water/water heat exchanger connected in series in the engine cooling circuit. The water/air heat exchanger is arranged upstream of the water/water heat exchanger. The water/water heat exchanger is between the water/air heat exchanger and panel heat exchangers which are located in the interior of the vehicle.

Abstract: In a blower housing arrangement for a motorized vehicle of the type with a blower encased by a housing followed by a duct system, a preferably open-pore foam material is utilized for noise damping, this foam material being sealed at least on the inside of the housing by means of a skin. This foam material is locally supported and bordered along the edges by wall sections of the housing and/or of the duct system so that, in this zone, the foam material is the sole means of forming the wall. The wall sections constitute a skeleton which, at least during normal driving operation, is dimensionally rigid and supportive and which serves for the accommodation of installation components, operating parts, and mounting elements.

Abstract: A fresh air supply device for a heating, ventilating and/or air-conditioning installation of a motor vehicle is provided wherein the fresh air enters through a gap between the windshield and the hood into an air collecting tank. In order to prevent the admission of moisture to an air filter and to prolong its useful life, the water flowing off the windshield and entrained by the airstream is received by a channel oriented in the transverse direction of the vehicle. This channel is followed by a grill for separating out larger particulate matter entrained in the airstream. A downward-pointing ledge adjoins the grill for further demoisturizing and to deflect the air and at least partially covers a dust filter which is arranged in such a position in the airstream that dust dropping from its dirty side falls freely downwards.

Abstract: A vehicle air conditioning, heating and air circulation system is provided for a vehicle utility space. A condensor and evaporator of a vehicle compressed-air air-conditioning system are arranged respectively in the inflow and outflow air channels for the vehicle space. A heat exchanger cycle of a vehicle water or oil engine cooling heat exchanger system is disposed in the inflow air channel. A pivotal flap is disposed intermediate the inflow and outflow channels to selectively control the flow of air.

Abstract: A motor vehicle heat exchanger for independently heating different passenger areas comprising first and second tube/fin block units for transferring heat from coolant flowing through tubes thereof to air flowing therethrough to first and second passenger areas, respectively. Common upper and lower coolant reservoir tanks supply coolant to both tube/fin units and receive coolant returning therefrom respectively. Intake tubes extend through a common gap between the first and second tube/fin units to supply heated coolant to the lower cooling tank.

Abstract: A device for regulating the heat output or heat capacity of a heat exchanger in an automotive vehicle with an actuating member to control the flow of a heat exchange medium and with a control device operating the actuating member. To provide input to the control device, signals are received from a highly rated internal temperature sensor and a lower rated heating air temperature sensor disposed at the outlet of the heat exchanger as well as a manually adjustable set point generator. The control device includes a pulse generator producing a triangular voltage of a constant frequency, with a differential amplifier for the signals of the temperature sensors as well as the set point generator. A comparator is provided for producing rectangular pulses in correspondence with the triangular voltage frequency, with a pulse width corresponding to the temperature signal of the differential amplifier. The heat exchanger is tubular and has a large ratio of heat exchange medium volume to heat dissipating surface area.

Abstract: The invention relates to a motor vehicle with an internal-combustion engine, with a heatable payload space and with a pipe flowed by air and leading into the atmosphere, which is divided into two pipe branches. A first heat exchanger flowed by the waste gases of the internal combustion engine is arranged in one of these pipe branches, while a second heat exchanger is arranged in the pipe downstream of the conjunction of the two pipe branches. The latter heat exchanger is flowed on the secondary side by a liquid serving to cool the internal-combustion engine, so that waste gas heat can be transmitted to this liquid, or cooling heat can be discharged to the exterior, as a function of heat incidence and heat demand. In certain embodiments, two heat exchangers are arranged in series in the pipe leading to the atmosphere, one operatively interposed in the engine cooling water circuit, the other operatively interposed in the engine cooling oil circuit.

Abstract: A heating and air-conditioning installation for motor vehicles, in which an adjustable desired temperature is kept constant in the interior space of the motor vehicle independently of changing conditions, includes a heat-exchanger connected to the hot water circulation of the engine as well as an adjusting member on whose position is dependent the heat quantity supplied to the vehicle interior space; the position of the adjusting member is controlled by an output signal produced by an electronic circuit as a function of the sensor detecting the heat quantity supplied to the vehicle interior space, an interior sensor, a setting device and an outside sensor; a switching device operable to switch from fresh-air operation to recirculated-air operation is also controlled as a function of a signal of the electronic circuit; the electronic circuit includes a delay element to produce a time-delayed intermediate signal from the values obtained from the interior sensor, the outside sensor and the setting device; the in

Abstract: An aggregate space or assembly compartment arranged between an engine compartment or a trunk and a splash panel of a motor vehicle. The aggregate space is closed off by means of a hood which can be swung upwardly and has an air inlet slot between an end edge of the aggregate space on a window side thereof and an adjoining zone of a body portion of the motor vehicle. The aggregate space accommodates an aggregate part of a heating/ventilating and/or air conditioning unit which in the interior of the aggregate space, takes over air deflecting and air distributing functions. The aggregate part includes a jacket for enhancing a water deposition or separation and a water drainage. Fresh air entering the aggregate space is conducted and deflected along the jacket and then passed to an air inlet opening set into an underside of the aggregate part. The air leaves the aggregate space through the inlet opening in an essentially upwardly oriented direction.

Abstract: A fuel system for a motor vehicle with a passenger space and driven by an internal combustion engine that includes a fuel tank, a fuel feed pump, a mixture-producing device, a fuel inlet line leading from the fuel tank to the fuel feed pump and a fuel return line leading back to the fuel tank, and a liquid/air heat-exchanger arranged in the fuel system which is traversed on the liquid side by the fuel and on the air side by the ventilating discharge air out of the passenger space.

Abstract: A heating system for motor vehicles with a heat-exchanger that is connected to the cooling system of the internal combustion engine; at least one heat conductor adapted to be acted upon by the exhaust system terminates in the flow path of the cooling water upstream of the heat-exchanger for the heating system.

Abstract: An installation for ventilating the interior space of a passenger motor vehicle which includes air inlet and air discharge apertures terminating in the atmosphere, a fresh air channel leading from the air inlet aperture into the interior space, a fan and a one-piece or a multi-partite air filter insert arranged in the fresh air channel or channels and adapted to be traversed by the fresh air; at least one of the fresh air channels is thereby extended along a space readily accessible through a large continuous surface, such as the hat storage area normally disposed in front of and underneath the rear window whereby this air channel is enlarged housing-like within this area for accommodating the air filter insert and is equipped with an opening of large surface and adapted to be closed for the ready interchange of the air filter insert.