Robert Boschgmbh

Bernhard Bonse

Friedrich Boecking

Heinrich Knapp

Gerhard Stumpp

Karl Hofmann

Michael Wissmann

Nestor Rodriguez-Amaya

Werner Fischer

Peter Boehland

Ulrich Kemmner

Wolfgang Fehlmann

Ewald Eblen

Peter Jurgen Schmidt

Walter Egler

Andreas Dutt

Walter Fuchs

Hartmut Bauer

Heinz Nothdurft

Peter-Jurgen Schmidt

Andreas Sterr

Joerg Wolke

Holger Pitsch

Klaus Wohlleber

Reinhard Klinkenberg

Joerg Schmidt

The invention concerns an injector for the injection of fuel into the combustion chambers of combustion engines. Inside an injector housing ( ) is located a nozzle needle ( ), which is surrounded by a nozzle chamber ( ). The nozzle needle ( ) is moveable back and forth within the injector housing, and is aligned by the guiding sections ( ) inside the injector housing ( ). A thick spring ( ) pressed the nozzle needle against the injector ( ) a ring canal ( ) is formed between injector housing ( ) and nozzle needle ( ) and a conical section ( ) of said nozzle needle ( ) follows in the direction towards the seat ( ).

Pressurized injector with optimized injection behavior throughout the cylinder path

A fuel injection system for internal combustion engines with a pressure step-up means is proposed, in which the fuel is pumped out of the low-pressure supplier into the injection nozzle via a feed line and is measured correctly in terms of time and quantity via a control line by the high-pressure part of the injection pump.

Fuel injection system for internal combustion engines, and method for injecting fuel into the combustion chamber of an internal combustion engine

A fuel injection valve for internal combustion engines with a valve member that can move axially in a bore of a valve body and has a pressure shoulder on its shaft which acts in the opening direction of the valve member and protrudes into a pressure chamber that can be filled with high fuel pressure by way of a pressure conduit. This pressure conduit is pivoted eccentrically in such a way that the fuel jet emerging from the valve member enters into the pressure chamber off-center to the valve member.

Fuel injection valve for internal combustion engines

A fuel injection pump for internal combustion engines which has a moving part supported in a housing bore and on its jacket face on one side, has an exit opening that is under high pressure, and whose bearing is improved by virtue of the fact that on the jacket face of the part or in the wall of the housing bore, at least one pressure compensation is provided. The compensation face is connected to a high pressure source, is disposed on a side of the jacket face of the part which side is remote from the exit opening, and is continuously covered by the wall of the housing bore. As a result, a compensation of the pressure action by means of the pressure field prevailing in the region of the exit opening occurs so that an improved, less damage-prone bearing is produced with a greater high pressure tightness of the moving part.

Fuel injection pump for internal combustion engines

A fuel injection system for internal combustion engines in which a high-pressure pump and a high-pressure reservoir is supplied with fuel at an injection pressure, from which reservoir the fuel arriving at injection is diverted as a function of time and quantity and delivered via a distributor to one of a plurality of injection points, via two sequentially electrically controlled valves. The injection points are triggered successively by a distributor opening of the distributor. With a fuel pressure, thus held at a certain pressure, in the high-pressure reservoir, a universally controllable fuel injection system is attained in a simple way, at little effort or expense.

Fuel injection system for internal combustion engines

Fuel injection device for internal combustion engines

To monitor the functioning of a redundant safety fuel shut off valve in a diesel engine, the electric power supply for a controlling device for the fuel quantity adjustor of a fuel injection pipe is decoupled from the power supply for the control of the electromagnetic fuel shut off valve. A relay controlled by a driving switch of the engine has a contact whose opening is time delayed relative to the opening of the driving switch. The relay contact is connected for energizing the controlling device for the fuel quantity adjustor whereas the energization and deenergization of the fuel shut off valve is effected immediately via a decoupling member. When the driving switch is opened and the engine is running during the given time delay interval, an error signal is generated indicating a malfunction of the fuel shut off valve.

Safety system for internal combustion engines

A method of controlling fuel mixture supply to an internal combustion engine having fuel injection system in which the quantity of fuel is metered in dependency on gas pedal position and the quantity of air is subsequently metered in dependency on the position of the throttling plate. The method employs a preliminary control with superposed extreme value regulation. For this purpose, the injection time interval or the throttle plate position are adjusted in dependency on the gas pedal position and on the rotary speed of the engine. During the operation of the engine, test cycles are continuously established and according to the reaction of the engine to the tests, the adjustment of the injection time interval and of the throttle plate position are made. The method is suitable particularly for internal combustion engine used in motor vehicles.

Fuel controlled injection system

A control system for internal combustion engines with externally supplied ignition and having a throttle valve in the air intake tube, a controllable bypass around the throttle valve and a fuel metering system, in which at least at predetermined operating states, a special fuel metering signal is formed in accordance with the control signal for the bypass opening and preferably also in accordance with the rpm. It is thereby possible to establish a supplementary air quantity and a supplementary fuel quantity independently of one another in individual operating ranges; this provides a great deal of freedom and makes it possible to attain quite various possible kinds of regulation, such as idling-rpm regulation, lambda regulation, engine smoothness regulation and fuel consumption regulations. For generating the special fuel metering signal, a performance graph is efficaciously used, by way of which various operating parameters, such as temperature, can be taken into account.

Control system for an internal combustion engine with externally

An apparatus is proposed which serves to regulate the idling rpm of an internal combustion engine. The apparatus includes a bypass line bypassing an arbitrarily actuatable throttle valve in the intake tube. An electromagnetically actuatable bypass valve is disposed in the bypass line for the purpose of controlling supplementary air and is triggerable in accordance with operating characteristics of the engine. In addition, a pressure-sensing adjusting element is also provided, which responds to an abrupt reduction in the intake tube pressure downstream of the throttle device. In accordance with the magnitude of the pressure reduction, this pressure-sensing adjusting element effects a time-limited increase in the supplementary air quantity to the intake tube section downstream of the throttle valve. In the event of an abrupt reduction in the intake tube pressure downstream of the throttle valve, caused by the closure of the throttle valve subsequent to a previous, slight increase in pressure on the gas pedal, the apparatus according to the invention prevents the engine from stopping.

Apparatus for regulating the idling RPM in an internal combustion engine

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Stuttgart, Germany

Bernhard Bonse