Wabco Europe Bvba

Wabco Automotive UK Limited

Zf Cv Systems Europe Bv

Simon Warner

David Heaps

John Hegarty

Paul Wellings

A vacuum pump suitable for mounting to an engine includes: a casing having a cavity, the cavity including an inlet and an outlet; a moveable member arranged for rotation inside the cavity, the movable member being movable to draw fluid into the cavity through the inlet and out of the cavity through the outlet so as to induce a reduction in pressure at the inlet; a valve seat at the outlet; and an outlet valve including a reed element and a stop for restricting movement of the reed element. The stop is movable between a first operating position, in which movement of the reed element is restricted to a first opening degree, and a second start-up position, in which movement of the reed element is restricted to a second opening degree, which is larger than the first opening degree.

Vacuum pump reed valve which will reduce cold start torque

A vacuum pump includes a housing defining a cavity having an inlet and an outlet; a vane member for a rotary driven movement inside the cavity; a drivable rotor inside the cavity; and a rotatable central shaft extending to the cavity. The vane member is slidably arranged in the rotor. The rotor is rotatable together with the vane member. The central shaft comprises a crank pin configured to engage a respective guiding recess of the rotor for driving the rotor at least along a first predetermined rotational angle.

Vacuum pump with eccentrically driven vane (eccentric pump design with crank pin)

Vacuum pump (), comprising a housing () having an inlet () and an outlet () and defining a chamber () within the housing (), a rotor () for rotational movement about a rotational axis (AR) within the chamber (), and at least a first and a second vane () received in respective first and seconds slots () formed in the rotor (). The first and second slots () are substantially parallel to each other, and a length (L) of each vane () is larger than a length (L) of the respective slot. Production method of such a vacuum pump.

Twin vane rotary vacuum pump

An automotive vacuum pump includes a casing defining a cavity, the casing having an inlet and an outlet, wherein the cavity contains a rotor extending through a side of the casing to the exterior thereof and being provided with a coupling arrangement to couple the rotor to a drive member. The vacuum pump is provided with a lubrication conduit for the supply of lubricating fluid to the coupling arrangement from within the vacuum pump.

Vacuum pump

To provide a failsafe drive coupling capable of high torque transmission in direct dog drive, a vacuum pump drive is disconnectable from a drive shaft upon movement of a piston against a return spring, under the action of oil pressure. The piston comprises a speed synchronizing clutch engageable with the input shaft to rotate the piston at the speed of the input shaft, and teeth to directly dog the piston and input shaft together.

Vacuum pump having a disconnectable drive coupling

A rotating vane vacuum pump includes a housing defining a cavity having an inlet and an outlet, a drivable vane member for a rotary driven movement inside the cavity, a rotor inside the cavity, and a rotatable central shaft extending into the cavity. The vane member is coupled to the central shaft by an eccentric element on the central shaft and movably arranged in the rotor, the rotor being rotatable together with said vane member upon rotation of the vane member. A rotational axis of the central shaft is offset from a rotational axis of the rotor and a point of action of the vane member is offset from the rotational axis of the central shaft by the eccentric element on the central shaft. The rotor encloses radially the eccentric element of the central shaft.

Vacuum pump with eccentrically driven vane (eccentric pump design)

The present invention relates to an automotive vacuum pump. The vacuum pumphas a casingdefining a cavity having an inletand an outlet, wherein the cavity contains a rotorand a vane slidably mounted to the rotor. The rotorextends through a sideof the casingto the exterior thereof and is provided with a coupling arrangementto couple the rotorto a drive member. The vacuum pumpis provided with a lubrication conduitfor the supply of lubricating fluid to the coupling arrangement, the conduitincluding a portionwhich extends through the rotorand the coupling arrangement

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Pontefract, United Kingdom

Simon Warner