Valeoscope - Transmission Syst. Clutch KIT4P Conversion Kit

6. KIT4P design: Long Travel Damper (L.T.D.)

6.4 Long Travel Damper evolution: High Angular Displacement (H.A.D.) Technology

Car Manufacturers request high-performance products for increased engine torque with com- pact size. These expectations are now covered with the H.A.D. offer for diesel engines and pe- trol direct injection engines. Valeo High Angular Displacement (H.A.D.) is a further evolution of Valeo O.E. Long Travel Damper Technology. It is composed of a high- tech pre-damper multi-cassette that provides an optimized angular stiffness over the clutch disc. This O.E. technology enables car manufactu- rers to use a rigid flywheel instead of the Dual Mass Flywheel technology even at high engine torques (up to 270 Nm for passenger cars and 350 Nm for Light Commercial Vehicles) On the front cover of this brochure, you can see the H.A.D. clutch together with the rigid flywheel for Fiat Scudo, Citroën Jumpy and Peugeot Expert with 2.0HDi engine. This is not the only example, as H.A.D. is also available for the Renault Scénic 1.9D and the Renault Fluence 1.5dCi. The choice of clutch product depends on many factors such as performance, efficiency and reduction of ove- rall costs. Valeo’s R&D centres are capable of offering a solution that is perfectly matched to the car manufacturer’s requirements and the given technical limitations.

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