Robert Boschgmbh

Heinz Britsch

Ernst Linder

Winfried Moser

Helmut Rembold

Konrad Eckert

Klaus D Muller

Martin Klenk

Wilhelm Polach

Gottlob Haag

Heinz Stutzenberger

Uwe Mueller

Nikolaus Benninger

Gernot Wuerfel

Peter Schomakers

A method for avoiding an injector orifice internal coking of the spray orifices of a multi-orifice fuel injector of a direct injection internal combustion engine, e.g., of a motor vehicle, is provided. Fuel is injected into a combustion chamber of the internal combustion engine by multiple injections. The fuel is injected by a first main injection during the intake stroke and by a subsequent postinjection during the compression stroke before the ignition time. Thereby, during a long operation of the internal combustion engine, especially in a homogeneous operation, the injection time does not have to be continually increased in order to compensate for the increasingly shrinking cross section of the spray orifices.

Method for avoiding an internal coking of an injection hole for injection holes in a multi-hole injection valve

Fuel injection apparatus for a two-stroke internal combustion engine

The arrangement for determining rotation angle of two rotating parts in an internal combustion engine includes a first rotating part having a protruding member extending laterally from the first rotating part, the first rotating part being connected with a crankshaft of the internal combustion engine; a second rotating part having a protruding element extending laterally, therefrom the second rotating part being connected to a camshaft of the internal combustion engine and the second rotating part being positioned adjacent to the first rotating part; a pickup device for generating a first output signal when the protruding member passes by the pickup device during rotation of the rotating parts and for generating a second output signal when the protruding element passes by the pickup device during rotation of the rotating parts; and a signal processing device for receiving the first and second output signals from the pickup device, for determining a time interval between one of the first and one of the second output signals and for calculating an angular displacement between the first and second rotating part from the time interval. The arrangement includes only one pickup device for generating both first and second output signals and the protruding member and protruding element are shaped and positioned so that each of the first output signals and the second output signals is generated by the single pickup device and the first and second output signals are different and distinguishable from each other.

Arrangement for determining angle of rotation of two rotating parts

A device for detecting pressure fluctuations in a combustion chamber of an internal combustion chamber includes two ionic current gages positioned in an end gas region of the combustion chamber and spaced from each other by a predetermined distance in an axial direction. The device detects pressure knocks in the combustion chamber by defining various time intervals for the occurrence of the ionic current during the knocking combustion and non-knocking combustion of gases in the combustion chamber.

Device for detecting pressure fluctuations in a combustion chamber of

To modify engine operation and reduce the tendency of the engine to knock or ping, a knocking signal is generated which is representative of knocking intensity and/or frequency of knocking occurrence, and compared with a permissible knocking signal. The result of the comparison is utilized to change an operating parameter of the engine, for example by injecting a fluid, e.g. water, into the engine, changing charge pressure, for example of a turbocharger or the like. The permissible engine knock signal can be modified in accordance with an engine operating parameter, for example at low temperature, or low speed, the permissible knocking limit can be raised since the damaging effect of knocking at low temperature or low speed is less than under different operating conditions.

Internal combustion engine operating control system and method

An internal combustion engine has a fuel supply, an accumulating container, first and second blocking elements, and a plurality of cylinders of which at least one cylinder is separable from the fuel supply by the first blocking element and connected at its outlet side to the accumulating container, and at least another of the cylinders is connected at its inlet side with the accumulating container and is separable from the fuel supply by the second blocking element.

Internal combustion engine

A device is proposed for the supply of operating air-fuel mixtures including exhaust gases to internal combustion engines. Between the opening periods of the inlet valves of an internal combustion engine, precisely dispensed quantities of recirculated exhaust gas are pre-stored in the intake channel directly upstream of the inlet valve whereby a stratification of exhaust gas and fuel-air mixture in the combustion chamber of the engine is obtained.

Growing community of inventors

Bietigheim-Bissingen, Germany

Heinz Britsch