HJS Soupapes d'échappement

The vacuum (pneumatic) operated exhaust valve consists of a double supported pressure plate, a housing avec an integrated plate stop eta métal vacuum actuator. The double supported pressure plate etthe patented axle suspension allows a noncontact positioning of the pressure plate in the housing. The special design of the exhaust valve ensures a très high tightness etcompared to conventional exhaust valves, the vibration noise is reduced best possible. The pneumatic activation of the exhaust valve can be performed directly on the intake manifold, an additional "vacuum storage" is not needed. The exhaust valve is opened in the pressure-less situation etthe opening angle can be adjusted manually.