Mann+hummel Gmbh

Filterwerk Mann + Hummel Gmbh

Thomas Haubold

Rudolf Leipelt

Sascha Bauer

Jochen Linhart

Martin Veit

Michael Kolmeder

Rolf Fuesser

Robert Vaculik

Hermann Maurer

Juergen Werner

Ralf Herrmann

Klaus Altmann

Klaus Lieb

Andreas Epp

A filter device has an annular particle filter having a raw side face and a radially separated clean side face, and axially opposing end faces. An annular water separating element is arranged in a flow path downstream of the particle filter, the water separating element circumferentially surrounding the particle filter at a radial spacing. An open inner annular space is defined by and between the particle filter and the water separating element and an outer annular space is defined by and between the water separating element and the filter housing.

Filter device, in particular fuel filter or oil filter

A resistance heaterfor a liquid system, in particular a fuel system of a diesel engine, in which a heating elementis connected to at least two contact rods. Terminals are provided on the contact rodsso that they can receive an electric voltage. In addition, a sensoris provided with which at least one parameter in the liquid system can be detected, and the sensoris connected accordingly to at least one analyzer unit

Resistance heater

An actuator element suitable, for example, for actuating a rotatable disk or a flap valve shaft. The actuator includes a housing, a drive situated in the housing, and at least one position detector, in which a movably mounted piston rod in the housing is operatively connected to the drive for exerting a force effect, and in which the position detector includes at least one stationary Hall sensor and at least one magnet movable relative to the Hall sensor such that the magnet produces a magnetic field for generating a magnetic flux.

Actuator element with position detection

An air intake system for intake air of an internal combustion engine comprising a filter insert ( ) in a housing ( ) connected to the air conducting system by a plurality of inlets ( ) and an outlet ( ). The air inlets are provided with individual intake nozzles or fittings and lead to a single common air chamber ( ) in the filter housing. The inlets ( ) can be individually opened and closed by flap valves ( ), thereby allowing the acoustics to be influenced favorably and enabling, for example, the respective intake fittings to be connected or disconnected depending on the temperature. The intake system requires only a limited number of components, and the design of the preferably wedge-shaped air chamber minimizes flow losses in the housing, which in turn decreases the intake noise. Shunt resonators ( ) can also be formed using cover elements ( ) and ( ).

Air intake system with an air filter

An intake system for an internal combustion engine of a motor vehicle, which includes a first air intake which is arranged at a point in the motor vehicle that is advantageous for air intake, and a second air intake which is arranged at a point that is protected from road spray and splashes of water. The two air intakes end in a common line that communicates with the internal combustion engine. In the first air intake a moisture sensor is arranged. When water enters into the first air intake this moisture sensor emits a signal that actuates a solenoid to move a pivotable valve In a first switching position pivotable valve closes the second air intake so that no air reaches line from the second air intake In a second position (shown in broken lines) pivotable valve closes the first air intake so that air reaches line only through the second air intake

Air intake system for an internal combustion engine

An intake system for an internal combustion engine of a motor vehicle which includes a first unfiltered air intake ( ) which is arranged at a location in the vehicle that is favorable for air intake, and a second unfiltered air intake ( ) which is arranged at a location in the vehicle that is protected against road spray and splashes of water. The two unfiltered air intakes ( ) each open into a common line ( ) which communicates with the internal combustion engine. In the first unfiltered air intake ( ) there is a moisture sensor ( ) which emits a signal when water enters the first unfiltered air intake ( ). This signal actuates a drive member which moves a flap between first and second switching positions. In the first switching position, the flap closes the second unfiltered air intake , so that no air can get into line from the second unfiltered air intake . In the second position, the flap closes the first unfiltered air intake , so that air gets into line exclusively through the second unfiltered air intake

Growing community of inventors

Marbach, Germany

Thomas Haubold