Robert Boschgmbh

Walter Schlagmueller

Ernst Linder

Helmut Rembold

Thomas Wiesa

Ralph Schimitzek

Peter Jauernig

Rolf Litzinger

Andreas Kellner

Manfred Ruoff

Juergen Binder

Frieder Keller

Eberhard Schoch

Peter Blessing

Peter Schubert

Rainer Heinsohn

Eberhard Holl

Bernd Aupperle

Dieter Schramm

Gerhard Schellenberg

Harald Laue

Juergen Rottler

Jurgen Rottler

The invention is directed to a method for controlling the idle of an internal combustion engine having an intake channel for conducting air to the engine. The method utilizes sensors for generating signals characterizing the operating state of the engine and for supplying the signals to a control apparatus. A tank-venting valve is provided through which air can be conducted into the intake channel when the tank-venting valve is open. Control quantities are computed in the control apparatus in dependence upon the signals for at least the following: the tank-venting valve, an idle adjuster device, a fuel metering device and an ignition device. The air supplied to the engine is controlled with the aid of the tank-venting valve. The invention is also directed to an arrangement for carrying out the method.

Method and arrangement for controlling the idle of an internal

Electronic brake system with back-up control during central module

Throttle apparatus for an internal combustion engine

Electromotive power steering

A fuel injection pump, preferably for internal combustion engines operating by the Otto method, having a pump work piston driven to reciprocate and rotate simultaneously and defining two mutually independent pump work chambers, is proposed. The first pump work chamber pumps fuel into the combustion chamber of the engine that is in a state immediately prior to ignition, while the second pump work chamber pumps fuel into the combustion chamber operating offset from the other by 360.degree. of crakshaft angle. To this end, two distributor openings are disposed in the jacket face of the pump work piston, offset by 180.degree. from one another and each communicating with a different one of the pump work chambers.

Fuel injection pump

For controlling high-pressure phases during the stroke of a pump piston of a fuel injection pump, magnetic valves are also used, which are built into relief lines of the pump work chamber of such fuel injection pumps and which with the instant of closure of the relief line determine the injection onset and with the instant of reopening of the relief line determine the end of injection and hence the injection quantity. Such valves must be capable of switching rapidly, in view of the high rpm of internal combustion engines, yet must be as small as possible and use the least possible energy. By using a piston slide which in the closing state is balanced in pressure on the high-pressure side, and by relieving the chambers defined on the face end by the piston slide, a fast-switching, recoilless magnetic valve is obtained, which is opened by a restoring spring when the electromagnet is in the currentless state. This makes the use of the magentic valve in combination with electrically controlled injection pumps particularly advantageous.

Magnetic valve

Growing community of inventors

Schwieberdingen, Germany

Walter Schlagmueller