Robert Boschgmbh

Robert Bosch Gbmh

Markus Amler

Klaus Joos

Jens Wolber

Thomas Frenz

Hansjoerg Bochum

Guido Porten

Uwe Mueller

Helmut Rembold

Ruediger Weiss

Matthias Walz

Jan-Mathias Meng

Karl Gmelin

Alexander Schenck Zu Schweinsberg

Michael Bauer

Karsten Hinn

Volkmar Goldschmitt

Edmund Schaut

Udo Hafner

Werner Hess

Winfried Moser

Juergen Raimann

Klaus Mueller

Bernd Schroeder

Peter Ropertz

Matthias Philipp

Timm Hollmann

Achim Hirchenhein

Rolf Reischl

Manfred Kirschner

Matthias Kuesell

Frank Mueller

Peter Schenk

Karsten Kroepke

Klaus Lang

Andreas Kufferath

Gerd Grass

Joerg Koenig

Ingo Richter

Pierre-Yves Crepin

Mathias Rollwage

Oliver Albrecht

Claus Schneider

Uwe Schaupp

Corren Heimgaertner

Christian Wiedmann

Klaus-Dieter Hufnagel

Ralf Daeubel

Lanouar Chouk

Bernd Herrmann

Bernd Kudicke

Mathias Schumacher

Alexandra Woerz

Marc Schott

Tobias Flaemig-Vetter

Wolfgang Saatmann

Arthur Pichlkostner

Hans-Peter Harnisch

Ralf Hofmann

A fuel distributor, which is in particular used as a fuel distribution rail for mixture-compressing, spark-ignited internal combustion engines, including a base body, at which at least one high-pressure inlet and multiple high-pressure outlets are provided. An insert element is furthermore provided that is situated in an interior of the base body. In the interior, the insert element separates an inflow area, which extends from the high-pressure inlet to the high-pressure outlets, at least essentially from a damping area. The insert element is designed as a thin-walled insert element that forms a divider extending through the interior at least from the high-pressure inlet to the high-pressure outlets.

Fuel distributor for internal combustion engines

A method is described for determining an opening delay of a fuel injector in which by activating a solenoid with the aid of an armature, a valve needle may be opened wherein a mathematical model is used which includes an activation duration of the solenoid as an input variable and a respective opening delay as an output variable.

Method for determining an opening delay of a fuel injector

A method for setting an exhaust gas recirculation rate in an engine system having an internal combustion engine, the exhaust gas recirculation rate indicating the portion of the exhaust gas recirculated into one cylinder of the internal combustion engine with regard to the total gas quantity present in the cylinder, including: operating the internal combustion engine according to an input for the exhaust gas recirculation rate, an ignition of an air/fuel mixture being carried out in the cylinder at a certain ignition timing; adjusting the ignition timing in the cylinder of the internal combustion engine; correcting the input for the exhaust gas recirculation rate as a function of a change in an operating behavior of the internal combustion engine due to the ignition timing adjustment.

Method and device for controlling the exhaust gas recirculation rate for internal combustion engines during lean operation

In a method for operating an injector of an internal combustion engine of a motor vehicle, in which an actuator for driving a component of the injector is provided, the actuator is controlled in such a way that at least two partial injections are brought about within a working cycle of the internal combustion engine. For each partial injection, a starting point in time of the partial injection is ascertained.

Method and control unit for operating an injector of an internal combustion engine

The invention relates to a method and an apparatus for determining an exhaust gas recirculation rate in an internal combustion engine, in which the exhaust gas recirculation rate indicates a proportion of exhaust gas in a gas quantity delivered to a cylinder of the internal combustion engine, and combustion takes place in the cylinder of the engine cyclically during a combustion phase. The method includes the steps of ascertaining a combustion course statement over the course of combustion in the cylinder of the engine, and ascertaining an actual exhaust gas recirculation rate from the combustion course statement with the aid of a predetermined exhaust gas recirculation rate function. The invention further relates to a method and an apparatus for regulating an exhaust gas recirculation rate in an internal combustion engine, in which the exhaust gas recirculation rate indicates a proportion of exhaust gas in a gas quantity delivered to a cylinder of the internal combustion engine, and combustion takes place in the cylinder of the engine cyclically during a combustion phase. The method includes the steps of ascertaining a combustion course statement over the course of combustion in the cylinder of the engine, furnishing a set-point statement as a function of an operating point of the engine, and performing a regulation to compensate for a deviation that results from the set-point statement and the combustion course statement.

Method and apparatus for determining and regulating an exhaust gas recirculation rate of an internal combustion engine

In a method for controlling a fuel injection system () of an internal combustion engine, wherein the fuel injection system () comprises a manifold () and a high-pressure pump () and a fuel dosing unit () is associated with the high-pressure pump (), wherein the fuel dosing unit () controls the amount of fuel delivered, an amount of fuel required for the operation of the internal combustion engine is determined as a function of a correction factor, which is based on a fuel pressure at the inlet of the high-pressure pump () and/or on a vapor pressure of the fuel to be delivered.

Method for controlling a fuel injection system of an internal combustion engine

The aim of the invention is to optimize the running smoothness of an internal combustion engine. To achieve this aim, the individual cylinders are synchronized with respect to their torque contribution. According to the method, fuel is injected into the combustion chamber of a cylinder in at least one injection step, the at least one injection contributing to the torque of the internal combustion engine. Fuel is injected into the combustion chamber of the cylinder in a torque neutral manner by way of a secondary injection during a working stroke of the cylinder and the amount of fuel of the secondary injection us calculated in such a manner that the exhaust gas substantially corresponds to a stoichiometric air/fuel mixture.

Method for cylinder synchronization of an internal combustion engine

In an internal combustion engine, fuel is directly injected into at least one combustion chamber at least during a compression stroke in such a way that a stratified mixture is present in the combustion chamber. This mixture is then externally ignited. The fuel is introduced during the compression stroke by at least one main injection and an ignition injection, the ignition injection taking place immediately before an ignition and producing at least essentially no torque.

Method for operating an internal combustion engine

The invention deals with a method for operating an internal combustion engine with engine oil as the lubricant and a fuel supply by means of direct injection, wherein an air number (lambda) of a fuel-air mixture supplied to the internal combustion engine is determined. Provision is made in the method according to the invention for the internal combustion engine to be transferred to an operating state with higher fuel consumption, when a low air number (lambda) is detected in driving conditions with a high percentage of fuel ingress from a crankcase ventilation system into the fuel-air mixture. By means of this increase in the fuel requirement, the fuel, which exited the engine oil into the intake air of the internal combustion engine, can be combusted; and an increase in the exhaust gas emissions by means of incompletely combusted fuel, in which typically hydrocarbons and carbon dioxide arise, can be avoided. In a warm-up phase of the internal combustion engine, the fuel, which ingressed into the engine oil, can thus likewise be combusted, even if under certain temperature-time conditions, particularly in the partial load operating mode and during idling, more fuel is present in the fuel-air mixture than is actually required for operating the internal combustion engine.

Method for taking into account the outgassing of fuel from the engine oil of an internal combustion engine

An internal combustion engine is operated according to a method, in which the fuel is pumped from a first fuel pump to a second fuel pump and from there into a high-pressure region. The fuel passes therefrom into at least one combustion chamber of the internal combustion engine, by means of at least one fuel injection device. In certain operating conditions of the internal combustion engine, the pressure in the high-pressure region is lowered by means of a release device. According to the invention, the reliability and security of operating the internal combustion engine may be increased by monitoring the functioning of the release device (through).

Method, computer program, control and/or regulation device for operation of an internal combustion engine and fuel system for an internal combustion engine

A method for operating a fuel-supply system for an internal combustion engine of a motor vehicle is provided, the fuel-supply system having a fuel-storage tank, a fuel pump and a pressure sensor, the fuel pump supplying fuel from the fuel-storage tank to a pressure region, the pressure sensor being arranged in the pressure region, and the pressure sensor generating a signal representing the pressure in the pressure region.

Method for operating a fuel supply system for an internal combustion engine in a motor vehicle

A method for operating an internal combustion engine, in particular of a motor vehicle including at least one fuel pump delivers the fuel from a fuel tank into a fuel line. The pressure of the fuel, at least in a region of the fuel line, is increased as a function of an operating state. In order to assure a reliable starting of the engine, the pressure of the fuel, at least In the above-mentioned region of the fuel line is at least intermittently increased when the engine is not running.

Method, computer program and control and/or regulation device for operating an internal combustion engine, and corresponding internal combustion engine

A first method is for determining a variable, which characterizes a fuel injection, in an internal combustion engine of a motor vehicle in a hot-start situation wherein fuel is injected directly into at least one combustion chamber from a high-pressure region of a fuel supply system; the variable, which characterizes the injection quantity, is corrected at least in dependence upon a variable which represents a temperature of the fuel. A second method is for determining a hot-start situation in an internal combustion engine of a motor vehicle wherein a hot-start situation is determined at least based on a variable, which represents a temperature of the fuel, and based on a fuel pressure. The invention relates likewise to corresponding arrangements, a corresponding control apparatus for an internal combustion engine, a corresponding computer program having program-code means and a corresponding computer program product having program-code means.

Methods and device for controlling an internal combustion engine

In an internal combustion engine, the fuel is conveyed by an electrically driven fuel pump. The intake side of this pump is connected to a fuel tank and its outlet side is connected to a pressure region. A prerun of the electrically driven fuel pump may be performed before the startup of the internal combustion engine. In order to increase the service life of the fuel pump, an actual pressure (pactual) in the pressure region may be detected by a pressure sensor and the execution of the prerun be a function of at least the signal of the pressure sensor.

Method, computer program control and regulating unit for operating an internal combustion engine, as well as an internal combustion engine

Method for operating an internal combustion engine in which fuel is injected into a combustion chamber by an injector. The injector has a drivable piezo-actuator. A setpoint value is generated for driving the piezo-actuator. A setpoint charge quantity (QC) is determined from the setpoint value, and an actual charge quantity (QC) supplied to the piezo-actuator is determined. The setpoint charge quantity (QC) and the actual charge quantity (QC) are combined, and the combined result (S) acts upon the drive circuit of the piezo-actuator.

Method, computer program, memory medium and control and/or regulating unit for operating an internal combustion engine, as well as internal combustion engine, in particular for a motor vehicle

Growing community of inventors

Leonberg-Gebersheim, Germany

Markus Amler