Daimler Chrysler Ag

Robert Boschgmbh

Daimler-benz Ag

Mercedes-benz Aktiengesellschaft

Hans-Karl Weining

Martin Matt

Eberhard Holder

Klaus Wunderlich

Rolf Klenk

Ludwig Fricker

Guenter Hoenig

Markus Gesk

Kurt Oblander

Andreas Glenz

Ralf Bruenemann

Gottfried Wollenhaupt

Selcuk Geldec

Herwig Biesinger

Alexander Anderson

Hans-Jochen Blohm

Wilfried Christl

Juergen Kienle

Markus Sch&uuml;tz

Gerhard Fingerle

Ralf Krukenberg

A fuel-injection system for injection of fuel into an internal combustion engine includes at least one fuel injector and a first fuel-distributor line which is connected to the at least one fuel injector. A second fuel-distributor line is provided which is connected to the at least one fuel injector via an individual corresponding lance.

Fuel-injection system and method for injecting fuel

In a fuel supply arrangement for supplying fuel from a fuel tank to the fuel injectors of an internal combustion engine by an electrically operated fuel pump, a first fuel pressure level adequate for normal engine operation is provided by the fuel pump and means are provided for increasing the fuel injection pressure provided by the pump for supplying fuel at a higher pressure level to the fuel injectors during an engine start-up or warm-up phase.

Arrangement for supplying fuel to the fuel injectors of an internal combustion engine

In a method for operating an internal-combustion engine, a fuel/air mixture is fed to a combustion chamber of the internal-combustion engine and is ignited therein. At least for a defined period during the starting and/or warm-up of the internal-combustion engine, at least some of the liquid fuel is replaced with fuel which is in vapor form and is ignited in the at least one combustion chamber of the internal-combustion engine. The fuel which is in vapor form is taken from at least one fuel tank, which is connected to the internal-combustion engine, above a liquid-fuel level and/or from a charcoal canister which is connected to the fuel tank.

Method for operating an internal-combustion engine

The invention relates to a method for the cylinder-selective control of an air/fuel mixture to be burnt in a multi-cylinder internal combustion engine, in which the lambda values for different cylinders or groups of cylinders are separately sensed and controlled, and also relates to a multi-cylinder internal engine suitable for carrying out the method. In accordance with the invention, the lambda values of the individual cylinders or groups of cylinders are simultaneously controlled to different required values using an integrating I-control proportion with variable integrator slope and/or a differentiating D-control proportion.

Operating method for an internal combustion engine with lambda-value control

The invention relates to a mixture-compressing internal-combustion engine with secondary-air injection and with air-mass measurement as well as with an injection valve sequential fuel injection and air assistance, the air line provided for air assistance being equipped with a shut-off valve opening in the starting and the warmup phase of the internal-combustion engine.

Mixture-compressing internal-combustion engine with secondary-air

A control arrangement for an internal combustion engine equipped with vacuum-operated control devices includes a method and apparatus for applying a vacuum to a control device, retaining the vacuum for a specified time or under specified engine operating conditions and then reducing the vacuum in a controlled manner. A particular arrangement used to control an exhaust gas return system includes a no-return valve, connected in the vacuum line leading to an exhaust gas return valve, and a by-pass valve for by-passing the non-return valve under specified conditions. Exhaust gas return is maintained over a range of engine operating conditions, incurring a full load condition, to reduce NO.sub.x emissions to desired levels.

Control arrangement for an internal combustion engine

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Esslingen, Germany

Hans-Karl Weining