Valeo

About: Valeo is a company organization based out in Paris, France. It is known for research contribution in the topics: Heat exchanger & Clutch. The organization has 8904 authors who have published 14808 publications receiving 83614 citations. The organization is also known as: Société anonyme française du Ferodo.

Method for measuring the speed of a vehicle

Abstract: The method involves measuring (5) the speed of the vehicle (1) directly on the road surface (2) using the Doppler effect. The rotation frequency of a wheel (4) of the vehicle can be measured and the vehicle speed derived from the rotation frequency and the circumference of the wheel. The directly and indirectly measured speeds are compared in a central computer to detect wheel slip. An Independent claim is also included for an arrangement for measuring the speed of a vehicle wrt. a road surface.

Signal interconnecting part for electrical rotating machine

Abstract: A dissipator for electronic components, the electronic components being intended for the functioning of a rotary electrical machine, the machine comprising a rear bearing, the dissipator comprising a top face and a bottom face including fins. The present invention applies to any type of polyphase rotary electrical machine, synchronous or asynchronous, such as alternators or alternator starters, and also whether it is a case of electrical machines for motor vehicles and driven for example by belt, with cooling by air, liquid or any other solution that can be envisaged.

Heat exchanger with oval or oblong tubes, and a method of assembly of such a heat exchanger

Abstract: A heat exchanger, especially a heating or cooling radiator for a motor vehicle, has a tube bundle consisting of oval or oblong tubes which extend through a matrix of cooling fins. End portions of the tubes are introduced into holes in a header plate, with a compressible sealing gasket being interposed, the gasket having collar portions surrounding the tube end portions, and the latter having an oval or oblong cross section. The major axis of each tube end is equal to the major axis of the body of the tube, while the minor axis of the tube end is greater than the minor axis of the body of the tube as a result of the tube having been expanded or flared during the assembly of the heat exchanger.

Coded remote control with a code-changing facility

Abstract: The system is of the type that contains a transmitter with devices for transmitting and transferring a coded message, and also a receiver with devices for receiving the message sent out by the transmitter, devices for comparing the said message with a stored message and devices for transmitting a control signal in the case of agreement between the received message and the stored message The remote control system in accordance with the invention is characterised by the fact that the receiver contains in its memory a previously specified fixed code, reception of which does not cause transmission of the said control signal but actuates devices for input into the said memory of a control code that has been received after the said fixed code, the said, previously specified fixed code being sent out by a programmable transmitter Application in the automobile industry

Influence of magnetic saturation on rotor bar current waveform and performance in induction machines

Abstract: This paper investigates the influence of magnetic saturation on the rotor bar current waveform and performance characteristics of a squirrel-cage Induction Machine (IM). The levels of iron saturation in different parts, including stator and rotor back iron, tooth body and tooth tips etc., are examined and their influences are investigated, while the dominant part which causes the non-sinusoidal rotor bar current waveform is identified. It has revealed that the magnetic saturation, particularly in the rotor tooth, has a significant effect on the bar current waveform and the phenomenon is explained in depth.