Thomas Magnete Gmbh

Caterpillar Inc.

Olaf Ohligschlaeger

Axel Mueller

Rene Schulz

Stefan Quast

Alan Ray Stockner

Ronald Dean Shinogle

Clifford E Cotton, Iii

Bernhard Kirsch

Michael Feckler

Ye Tian

David E Martin

Stephen Michael Wiley

Thomas Rolland

Michael Mueller

Andreas Monzen

Bernd Koehler

The invention relates to a pump for pumping a fluid, including an inlet, an outlet, and a pumping chamber, wherein a valve is arranged between the inlet and the pumping chamber or between the pumping chamber and the outlet. The valve includes a valve body having a valve seat pointing in the direction of the outlet, and a valve member that interacts with the valve seat, wherein the valve member is loaded under pre-loading against the valve seat into a closed position of the valve and allows fluid to pass through in a pumping direction due to the valve member lifting off against the pre-load, wherein the valve body is accommodated in a receptacle of a pump part. A pump for which the development of noises and vibrations is reduced in that the valve body can move axially relative to the receptacle that accommodates the valve body.

Pump

The invention relates to a reciprocating piston pump having a magnet drive and a first displacement chamber and a second displacement chamber, which are separated from each other by a piston, wherein both displacement chambers are connected to each other by a fluid-conducting channel. An overflow valve is arranged in the channel and allows a preferred flow from the first displacement chamber to the second displacement chamber, wherein an additional return valve is arranged either in a transition region between an inlet and the first displacement chamber or in a transition region between the second displacement chamber and an outlet, an armature of the magnet drive being firmly connected to the piston.

Pressure-regulating reciprocating-piston pump having a magnet drive

The invention relates to a reciprocating piston pump for delivering a liquid. The pump includes a solenoid with an actuator and an outlet port. A check valve with a seat body is assigned to the outlet port for keeping a return flow of the liquid out of the reciprocating piston pump. The seat body bears an impact damping face at a front face facing away from a valve seat of the check valve, and the valve seat of the check valve and the impact damping face are made from the same elastomer material.

Reciprocating piston pump

Electrically controlled fuel injection systems should be able to operate at low voltage. In order to operate an electrically controlled fuel injection system at low voltage, the voltage available to an electrical actuator is monitored. The electrical actuator is coupled to a valve positioned within a passageway in which high pressure actuation fluid flows to and from an hydraulically actuated device, such as a fuel injector and/or an engine brake. If the voltage available to the electrical actuator falls below a predetermined voltage, the pressure differential across the valve is reduced. Although the principal application of the present invention is in the fuel injection system, the present invention has application in any electrically controlled fluid system at low voltage.

Electrically controlled fluid system with ability to operate at low energy conditions

A control system adapted to control an actuator between extended and retracted positions has a fluid control valve connected to the actuator a source of high pressure fluid and a reservoir. The fluid control valve is movable between a first position at which the actuator is connected back to the fluid reservoir adapted and a second position operable to connect the actuator to a high pressure actuation fluid source. An electronic control module is connected in control communication with the fluid control valve and adapted to automatically generate a control signal to position the control valve at the second position in response to an elapsed time being passed at which the fluid control valve is at the first position is greater than a predetermined time.

Fluid control valve actuating system

Growing community of inventors

Gruenebach, Germany

Olaf Ohligschlaeger