Hansjoerg Bochum

US Patent:

6389901, May 21, 2002

Filed:

Sep 28, 2000

Appl. No.:

09/671609

Inventors:

Klaus Joos - Walheim, DE
Jens Wolber - Gerlingen, DE
Thomas Frenz - Noerdlingen, DE
Hansjoerg Bochum - Novi MI
Markus Amler - Leonberg-Gebersheim, DE

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

G01L 700

US Classification:

73714

Abstract:

The invention is directed to a method and an arrangement for operating a fuel supply system ( ) and especially a fuel supply system of an internal combustion engine of a motor vehicle. Fuel is pumped into an accumulator ( ) with the aid of pumps ( ) and the fuel is adjusted at least to a first pressure (P ) or a second pressure (P ). Initially, the first pressure (P ) is adjusted and a pressure signal (PS ) is detected and, thereafter, the second pressure (P ) is adjusted and a pressure signal (PS ) is detected. A pressure difference (P) is formed from the detected first and second pressure signals (PS , PS ). If the pressure difference P deviates from an expected pressure difference (P_E) by more than a threshold value (S), then a fault in the fuel supply system ( ) is detected and stored.

US Patent:

6412475, Jul 2, 2002

Filed:

Aug 2, 2000

Appl. No.:

09/631017

Inventors:

Klaus Joos - Walheim, DE
Jens Wolber - Gerlingen, DE
Thomas Frenz - Noerdlingen, DE
Markus Amler - Leonberg-Gebersheim, DE
Hansjoerg Bochum - Farmington Hills MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02M 3704

US Classification:

123510, 123514

Abstract:

A fuel supply system for supplying an internal combustion engine has a consumption-controlled fuel feeding module which at a suction side is connected with a supply tank and at the pressure side is connected with an internal combustion engine. At pressure side of the fuel feeding module a return conduit is leads to at least one pump for filling of the fuel feeding aggregate. A preliminarily supplied return is blockable by a switchable adjusting member which adjusts the return quantity with an open switchable adjusting member by means of a throttle element in all operational conditions above a minimal pump consumption.

US Patent:

6439190, Aug 27, 2002

Filed:

Dec 20, 2000

Appl. No.:

09/720026

Inventors:

Hansjoerg Bochum - Novi MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02B 1700

US Classification:

123295, 123491

Abstract:

An internal combustion engine ( ), especially for a motor vehicle, is described and is provided with an injection valve ( ) with which the fuel, which is to be injected for a combustion, can be injected directly into a combustion chamber ( ) during an induction phase and during a compression phase. A control apparatus ( ) is provided for controlling (open loop and/or closed loop) the fuel mass injected into the combustion chamber ( ). A pressure sensor is provided for measuring the pressure with which the fuel is injected into the combustion chamber ( ). The fuel is injected via the control apparatus ( ) during the induction phase when the pressure is less than a pregivable minimum pressure.

US Patent:

6453879, Sep 24, 2002

Filed:

Jan 24, 2001

Appl. No.:

09/768767

Inventors:

Klaus Joos - Walheim, DE
Jens Wolber - Gerlingen, DE
Thomas Frenz - Noerdlingen, DE
Markus Amler - Leonberg-Gebersheim, DE
Hansjoerg Bochum - Novi MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02M 3704

US Classification:

123497, 12317916

Abstract:

An operating device for an internal combustion engine of a motor vehicle with a starter having an electric motor, the operating device has a fuel pump; and a connection of said fuel pump with the electric motor so that the electric motor can be used additionally at least indirectly for driving of said fuel pump.

US Patent:

6474292, Nov 5, 2002

Filed:

Jan 25, 2002

Appl. No.:

09/914357

Inventors:

Thomas Frenz - Noerdlingen, DE
Hansjoerg Bochum - Novi MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02M 3704

US Classification:

123198D, 123497

Abstract:

Method for operating a fuel supply system of an internal combustion engine, especially of a motor vehicle, wherein fuel is pumped into a storage space ( ) with the aid of a pump ( ) and a pressure is generated in the storage space ( ). In the system, an actual value of the pressure is measured with the aid of a pressure sensor ( ) and the pressure in the storage space ( ) is controlled (open loop and/or closed loop) to a desired value. A fault in the fuel supply system ( ) is detected via a plausibility control. When a fault in the fuel supply system ( ) is detected, a diagnostic cycle of the internal combustion engine is initiated. Diagnostic functions are activated which check individual components ( ) of the fuel supply system ( ) as to operability.

US Patent:

6474310, Nov 5, 2002

Filed:

Feb 13, 2001

Appl. No.:

09/782487

Inventors:

Klaus Joos - Walheim, DE
Jens Wolber - Gerlingen, DE
Thomas Frenz - Noerdlingen, DE
Markus Amler - Leonberg-Gebersheim, DE
Hansjoerg Bochum - Novi MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02M 3710

US Classification:

123497, 123514

Abstract:

A fuel supply device for an internal combustion engine of a motor vehicle has a supply container, a feeding aggregate which is electric-motor driven and feeds fuel from the supply container to an injection device of the internal combustion engine, a pressure sensor which determines a fuel pressure downstream of the feeding aggregate, a control device connected with the pressure sensor and controlling an operation of the feeding aggregate so that a fuel pressure is at least approximately below a nominal pressure, a throttled discharge arranged downstream of the feeding aggregate, a valve device operative for controlling the discharge depending on a fuel pressure and opening the discharge when a fuel pressure located under the nominal pressure is exceeded, and a check valve integrated in the feeding aggregate.

US Patent:

6508227, Jan 21, 2003

Filed:

Dec 4, 2000

Appl. No.:

09/727495

Inventors:

Hansjoerg Bochum - Novi MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02B 1700

US Classification:

123295, 123430, 701104

Abstract:

The invention is directed to an internal combustion engine ( ) especially of a motor vehicle. The engine ( ) includes a combustion chamber ( ) wherein fuel can be injected during a compression phase in a stratified mode of operation. A control apparatus ( ) is provided for determining an injection duration in the stratified operation in dependence upon the pressure difference between a fuel pressure, which operates on the fuel, and a combustion chamber pressure present in the combustion chamber ( ). A mean fuel pressure is determined by the control apparatus ( ).

US Patent:

6615807, Sep 9, 2003

Filed:

Dec 13, 2001

Appl. No.:

10/013534

Inventors:

Helmut Rembold - Stuttgart, DE
Udo Hafner - Ludwigsburg, DE
Winfried Moser - Ludwigsburg, DE
Matthias Philipp - Vaiihngen/enz, DE
Klaus Joos - Walheim, DE
Karl Gmelin - Flein, DE
Bernd Herrmann - Sachsenheim, DE
Volkmar Goldschmitt - Asperg, DE
Thomas Frenz - Noerdlingen, DE
Ruediger Weiss - Moetzingen, DE
Edmund Schaut - Friolzheim, DE
Uwe Mueller - Hemmingen, DE
Markus Amler - Leonberg-Gerbersheim, DE
Hansjoerg Bochum - Novi MI

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02M 3704

US Classification:

123516, 123541

Abstract:

A method for cooling a fuel injection system and fuel injection systems are proposed that improve the hot-starting performance of the internal combustion engine.