Aft Atlas Fahrzeugtechnik Gmbh

Atlas Fahrzeugtechnik Gmbh

Ford-werke Ag

Helmut Schilly

Dirk Neubauer

Dirk Heintzen

Burkhard Brandner

Harald Schmitz

Albert Stubs

Dieter Stojek

Bernhard Klein

The phase of a camshaft in an internal combustion engine can be changed by the piston rod of a double-acting hydraulic cylinder and piston unit which is controlled by a valve having a spool movable axially by an electromagnet which is adapted to be influenced by a plurality of signals including those from the engine electronics.

Method for regulating the operation of an adjusting device

Apparatus for regulating the operation of an adjusting device

An idling control for an Otto engine comprises a throttle valve positioned in a suction pipe of an engine intake manifold; a pneumatic cylinder unit operably engaged with said throttle valve by means of a positioning leg; a three-way flow control valve in fluid communication with said pneumatic cylinder unit, said valve having respective input conduits for atmospheric pressure and vacuum, and having means for alternatively transmitting said atmospheric pressure and said vacuum to said pneumatic cylinder unit, said transmitting means including opposing coils and a pulse generator having an adjustable pulse duty factor, said coils being connected to push-pull outputs of said pulse generator, the alternative positions of said control valve being determined in accordance with said duty factor, said duty factor being applied to said opposing coils simultaneously; said three-way flow control valve further includes valve seats for said input conduits and a membrane-like, freely-movable ferromagnetic valve plate having non-magnetic surface layers cooperable with said valve seats; and means for adjusting said pulse duty factor in accordance with engine operating parameters.

Idling control for an otto engine

A high-velocity carburetor for an Otto engine comprising a slide for changing the cross-section of the suction pipe, a nozzle connection receiving nozzles and a profiled nozzle needle seated on the slide and controlling the cross-section of the nozzle. One object is the precise adjustment of the air admixture and thus an optimum mixture regulation as a function of the most important parameters for the operational conditions. The nozzle connection contains two nozzles, situated coaxially to one another and separated from one another by an intermediate chamber. The intermediate chamber is connected to an outlet channel of a flow control value having a ferromagnetic membrane-like valve plate. The valve plate is operable by two coils opposing each other and being connected to push-pull outputs of a pulse generator with adjustable pulse duty factor. An input channel of the flow control valve is connected with the atmospheric air via an air filter. For the control of the pulse duty factor an address memory is provided which can be addressed by load values, speed values, and temperature values and which contains in the form of a performance characteristic field information values for the pulse duty factor so that the pulse duty factor and thus the air admixture in the intermediate chamber can be adjusted in accordance with said information values.

High-velocity carburetor for an Otto engine

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Bergneustadt, Germany

Helmut Schilly