Daimler Chrysler Ag

Mercedes-benz Aktiengesellschaft

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Bayerische Motoren Werke Aktiengesellschaft

Audi Ag

Daimler-benz Ag

Temic Telefunken Microelectronic Gmbh

Kurt Maute

Charles Robert Koch

Thomas Ganser

Wolfgang Strauss

Matthias Gramann

Klaus Wunderlich

Wolfgang Thiel

Thomas Kaiser

Walter Streit

Martin Spanninger

Rainer Mertl

Erhard Otto

Wolfgang Zag

Christoph Johann Schmitz

Gerhard Hettich

Hans Braun

Andreas Schmidt

Michael Virnich

Guido Vent

Gunther Alberter

Dieter Kalweit

Michael Nagel

Frank Kirschbaum

Werner Wiedemann

Thomas Klaiber

Werner Flierl

Madhukar Pandit

Jurgen Schenk

Gunther Breu

Igor Gruden

Rudolf Wilczek

Peter Klein

Uwe Kleinecke

Andreas Weber

Steffen Walter

Jurgen Willand

Achim Donnerstag

Markus Stalitza

Hermann Baumel

Alfred Wirth

Ulf Weinecke

Rainer Ballman

Christian Ederle

Hartmut Weckermann

Dirk Katzenellenbogen

Christian Heiselbetz

Michael K&uuml;hn

Rainer Kessler

Horst Kretschmer

Dietmar Lauffer

Christoph M&uuml;ller

In a method for operating an internal combustion engine, as a function of a desired load, wherein a desired pressure in the intake pipe of the internal combustion engine is determined and set by means of an air supply device, the ignition timing, the beginning of fuel injection and the duration of fuel injection values are determined in accordance with a predetermined relationship as a function of the desired load and the values are supplied as actuating signals to actuating elements by which the ignition and the fuel injection are adjusted to improve the engine response behavior.

Method of operating an internal combustion engine

In a method of operating an internal combustion engine which has at least two cylinder banks that can be controlled separately as a function of a desired load, wherein a desired pressure in the intake pipe of the internal combustion engine is determined and set by means of an air supply device for supplying combustion air to the cylinders of the internal combustion engine, at least one engine-related characteristic value which affects the behavior of the internal combustion engine is determined for each cylinder bank, and, in the event of a difference between the characteristic values of the cylinder banks, at least one cylinder bank is manipulated in such a way that the average value of the considered characteristic quantity corresponds to a desired average value in order to reduce the thermodynamic and mechanical loading of the internal combustion engine with bank-selective operating mode.

A method for adjusting an internal combustion engine with variable valve timing wherein the current position of the accelerator pedal is associated with a set air mass and a set pressure. The set pressure is compared with a reference pressure and control of the set air mass takes place via the throttling device in the intake pipe when the pressure falls below the reference pressure, and control of the set air mass is carried out via the engine valves when the pressure exceeds the reference pressure.

Method and apparatus for adjusting an internal combustion engine with variable valve timing

In a motor control method and apparatus for an internal combustion engine, a point for the beginning of injection moment and injection period for each cylinder are determined in a load-controlled way in a motor controller and supplied to the actuators for execution of the injection. To improve the response characteristic of the internal combustion engine, control information for injection of the cylinder currently to be addressed is transmitted as reserve information for the subsequent cylinder in every transmission cycle. In the event of a load increase, reserve information from the previous transmission cycle is used to control injection in the subsequent cylinder.

Motor control method and apparatus for internal combustion engine

The present invention relates to an actuator for electromagnetic valve control in which the yokes of the electromagnets have a slotted design by means of the yokes consisting of a plurality of solid parts joined to one another.

Actuator for electromagnetic valve control

In the case of known electromagnetic actuators each with at least one electromagnet acting on an armature, operational fluctuations of system parameters can lead to incorrect functioning, in particular to increased wear of the actuator, undesired noise generation, and excessive power consumption. In the new method, which is preferably used for operating gas change valves in internal combustion engines, the impact velocity of the armature on the electromagnet is automatically adjusted to a preset value. For this purpose, a controlled variable that depends on a change of inductance of the electromagnet is created as a measure of the impact velocity of the armature on The electromagnet and the controlled variable is adjusted by controlling the energy supply To the electromagnet to provide a setpoint value that the controlled variable adopts at a preset value of the impact velocity of the armature on the electromagnet. This permits reliable continuous duty with the new method.

Method for driving an electromagnetic actuator for operating a gas change valve

Actuators operating device for electromagnetic valve actuation in

The invention relates to a method for adjusting the drive performance of a motor vehicle having an internal combustion engine with spark ignition. A set torque is determined on the basis of a desired torque which is input by the driver, and possibly additional desired torque requirements. The desired torque is achieved by influencing the load and/or the ignition angle. For this purpose, the invention distinguishes between three operating states. In a first operating state, the torque is adjusted with optimum efficiency by load regulation; in a second operating state the torque adjustment is made as rapidly as possible by an additional ignition angle adjustment. Finally, in the third operating state the torque specification for load regulation is established and the remaining torque adjustment is made by an additional ignition angle adjustment.

Method for adjusting the operating energy input of a motor

In an internal combustion engine for motor vehicles with an engine shutdown driven capability, wherein the engine has intake and exhaust valves with a variable timing valve actuating system permitting the generation of an engine braking torque depending on the state of vehicle operation, the intake and exhaust valves are controlled during shutdown engine driven operation such that at least on type of valves, that is either all the intake or all the exhaust valves remain closed.

Internal combustion engine

Method of controlling the electric heating of a catalytic converter

The invention provides a method and apparatus for engine torque regulation in which, for rapid engine torque reduction, fuel injection is cut out using a cutout pattern that can be selected from a predetermined set of cutout patterns, as a function of the deviation of the engine torque. According to the invention, an engine-torque-reducing throttle position intervention is also implemented parallel to the fuel injection cutout. The difference in torque between a load-indicated actual engine torque (derived from an engine air volume measurement) and the required set engine torque can be regulated with an appropriate reduction of the degree of injection cutout in stages.

Method and apparatus for regulating engine torque

In the case of an electrical wiring for a motor vehicle having a primary system which includes a voltage-controlled generator, a primary energy accumulator as well as at least one primary energy consuming device, and having a paralleled secondary system which includes a secondary energy accumulator as well as at least one secondary energy consuming device, the secondary system includes a control unit with a controllable resistor connected to the generator. The control unit monitors the charge condition of the secondary energy accumulator. As a function of the currently determined charge condition of the secondary energy accumulator, the control unit, on the one hand, controls the controllable resistor in such a manner that, during the charging of the secondary energy accumulator, the primary system is not overloaded. Furthermore, the control unit connects and disconnects the secondary energy consuming device or devices in such a manner that, during the discharging of the secondary energy accumulator, there is no falling below a predetermined residual charge value.

Secondary accumulator charging/discharging for a motor vehicle using a

In a method of providing a desired output torque for an internal-combustion engine a desired air mass-flow value or a desired load value is determined from a desired output torque value in dependence on the engine speed and the throttle-valve opening angle, and the measured actual value is adjusted to the respective desired value by control of the throttle-valve opening angle. A conversion between load and air mass flow takes place by means of a load filter which compensates for the deviations, occurring in dynamic operating states, of the measured air mass flow from the air mass flow actually flowing into the combustion chamber of the engine and a transition between the two regulating methods can take place continuously or in a switched manner.

Method of controlling engine output torque

A method and apparatus control the power to be delivered by a mixture-compressing internal combustion engine which, during normal operation of the internal combustion engine, is adjusted by matching the fuel injection quantity to the induced air mass flow corresponding to the current load demand and controllable by a setting element. So that control of the internal combustion engine power to be delivered remains possible (emergency driving function) in the case of an impairment of the function of the setting element for controlling the induced air mass flow but, at the same time, so that a reduction in the volumetric efficiency of the internal combustion engine is not to be expected in normal operation, the internal combustion engine power is adjusted to the value corresponding to the current load demand during the period of the functional fault exclusively by interventions in the mixture composition and/or by interventions in the ignition and/or by controlled interruption of the fuel delivery to at least one cylinder (i.e. cylinder shut-down).

Power-controlling method for controlling mixture-compressing internal

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Sindelfingen, Germany

Kurt Maute