Wabco Automotive UK Limited

Wabco Europe Bvba

Zf Cv Systems Europe Bv

David Heaps

Uwe Stabenow

Simon Warner

John Hegarty

Peter Todman

Phillip Saxton

Andrew G L Blackwood

Paul Wellings

Paul Ruddock

A rotary vacuum pump includes a housing defining a pump chamber therein and a rotor extending through a first axial end panel into the pump chamber and carrying at least one vane for rotary movement of the vane within the pump chamber. The rotor comprises an annular axial end face configured to seal against a corresponding contact surface of a second axial end panel. An annular groove for reducing noise generation of the rotary vacuum pump during operation is formed at the annular axial end face of the rotor and/or the contact surface of the second axial end panel.

Rotary vacuum pump with a rotor end groove

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

A vacuum pump suitable for mounting to an engine includes a casing, a cavity in the casing having with an inlet and an outlet, a moveable member arranged for rotation inside the cavity, wherein the movable member is 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, an oil supply conduit for supplying oil from a reservoir to the cavity, and a check valve having a check valve body arranged in the oil supply conduit. The check valve meters the oil flow to the cavity dependent on an oil pressure so that on exceeding an upper oil pressure threshold the supply of oil to the cavity is stopped by means of the check valve.

Vacuum pump and system of a vacuum pump and an engine

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

The present invention provides a combined gas and liquid pump () for an internal combustion engine (). The pump () includes a casing () having a cavity () containing a rotor () and a vane () slidably mounted to the rotor (), wherein the cavity () is provided with an inlet () connectable to a gas source, a further inlet () connectable to a liquid source which is separate to the gas source, and an outlet (). The rotor () and vane () are movable to draw liquid and gas into the cavity () through the respective inlets () and to move said liquid and gas out of the cavity () through the outlet (). The inlets () are arranged through the casing () such that fluid is drawn first through one of the inlets and then through the other of the inlets before being discharged through the outlet ().

Combined gas and liquid pump

A vacuum pump () suitable for mounting at a lower region of an engine such as in the oil sump of an engine. The vacuum pump () includes a casing () having a cavity () containing a movable member (), wherein the cavity () is provided with an inlet () and an outlet () and the movable member () is 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. The vacuum pump () is further provided with an oil feed conduit () to supply oil to the cavity (), the oil feed conduit () being provided with a valve () to prevent the flow of oil to the cavity () during periods when the pump is not operating.

Vacuum pump with an axial oil feed conduit

A rotating vane vacuum pump has a secondary inlet () which permits additional suction after the primary inlet () has closed.

Growing community of inventors

Haworth, United Kingdom

David Heaps