Mann+hummel Gmbh

Ralf Herrmann

Karl-Ernst Hummel

Thomas Haubold

An internal combustion engine with a system for secondary air charging has a combustion unit, an intake air conduit connected to the combustion unit, and an exhaust gas conduit connected to the combustion unit. A throttle is arranged in the intake air conduit. A turbo-engine is connected to the intake air conduit by a supply conduit upstream of the throttle and by a discharge conduit downstream of the throttle. A compressor is provided wherein the turbo-engine is connected operatively to the compressor and wherein the compressor is connected by a connecting line to the exhaust gas conduit. A valve is arranged in the discharge conduit. A vacuum cell actuates the valve. An electro-pneumatic converter is operatively connected to the vacuum cell. The vacuum cell, when reaching a defined differential pressure, opens the valve suddenly so that a vacuum pulse is generated that acts on the turbo-engine.

Internal combustion engine with a system for secondary air charging and method for operation of the internal combustion engine

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

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Sachsenheim, Germany

Ralf Herrmann