Other

Valeo Corporation

Roger C Robin

Ngy Srun Ap

Jean-Francois Bouvot

Jean-Francois Somme

A device for the detection of an air filter having an auxiliary air duct opening upstream and downstream of the air filter so as to generate in the auxiliary duct an air flow due to the head loss of the air filter and having a velocity varying in accordance with the head loss; and an electronic circuit delivering from the signals of first and second sensing devices, a signal representative of a limit clogging of the air filter when the air flow speeds within a main duct and the auxiliary duct are differing by a determined value corresponding to a limit head loss of the air filter, the device being applicable to air conditioning equipments fitting automotive vehicles.

Device for the detection of the clogging of an air filter

A heating and ventilating apparatus for a motor vehicle includes a cold air admission duct supplying the admission and heating circuit in order to produce a stream of cold or heated air for introduction into the inlet of a distribution circuit having air outlet ducts which exhaust into different parts of the cabin of the vehicle. The apparatus includes a priority demisting duct which is separate from the distribution circuit, and which has an inlet communicating with the admission and heating circuit, together with an outlet which exhausts behind the windshield. A shut-off valve is displaced between a priority demisting position, in which it closes off the inlet of the distribution circuit, and a normal position in which it closes off the inlet of the priority demisting duct.

Heating and ventilating apparatus for the cabin of a motor vehicle

A heating system for an automobile comprising a circulation circuit for the coolant fluid of the engine of the vehicle, including a primary heating circuit connected to the engine and a secondary heating circuit including a heat exchanger positioned to heat the air to be transmitted into the passenger area of the vehicle and a heat generator separated from the primary heating circuit to accelerate the increase of the temperature of the fluid in the heat exchanger.

Heating installation comprising a heat generator, intended for an

Combustion engine cooled by circulation of liquid in a main circuit which includes a pump and a radiator associated with an expansion-tank. Auxiliary piping connects the expansion-tank to a suitable point in the main circuit in order to inject into it a flow of cold liquid coming from the expansion-tank and delivered through an auxiliary pump.

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Elancourt, France

Roger C Robin