Method for operating an internal combustion engine of a motor vehicle in particular
AssigneeRobert Bosch GmbH
InventorsAxel Heinstein, Axel Storch, Guido Pilgram, Klaus Ries-Mueller, Detlef Nowak, Stefan Lauter, Robert Koehler, Jens Botte
Life of this patent
Estimating the term…
Abstract
In a method for operating an internal combustion engine of a motor vehicle, in particular, pressurized fuel is conveyed to a fuel accumulator. The fuel is injected into a combustion chamber via a fuel injector. Coking of the fuel injector is determined. A first fuel-pressure increase is implemented when the coking exceeds a threshold value.
Claims9
A method for operating an internal combustion engine of a motor vehicle, the method comprising:
- supplying fuel under a pressure to a fuel accumulator;
- injecting the fuel into a combustion chamber of the engine via a fuel injector;
- ascertaining a coking of the fuel injector;
- implementing a first fuel-pressure increase if the coking exceeds a threshold value;
- and
- repeating the first fuel-pressure increase, wherein the first fuel-pressure increase is implemented for a predefined time period.
A method for operating an internal combustion engine of a motor vehicle, the method comprising:
- supplying fuel under a pressure to a fuel accumulator;
- injecting the fuel into a combustion chamber of the engine via a fuel injector;
- ascertaining a coking of the fuel injector;
- implementing a first fuel-pressure increase if the coking exceeds a threshold value;
- repeating the first fuel-pressure increase;
- and ending the repeating of the first fuel-pressure increase when the coking falls below a threshold value.
A method for operating an internal combustion engine of a motor vehicle, the method comprising:
- supplying fuel under a pressure to a fuel accumulator;
- injecting the fuel into a combustion chamber of the engine via a fuel injector;
- ascertaining a coking of the fuel injector;
- implementing a first fuel-pressure increase if the coking exceeds a threshold value;
- repeating the first fuel-pressure increase;
- and ending the repeating of the first fuel-pressure increase when a number of repeats exceeds a threshold value.
A computer-readable medium containing a computer program which, when executed by a processor of a motor vehicle having an internal combustion engine, performs the following method;
- supplying fuel under a pressure to a fuel accumulator;
- injecting the fuel into a combustion chamber of the engine via a fuel injector;
- ascertaining a coking of the fuel injector;
- implementing a first fuel-pressure increase if the coking exceeds a threshold value;
- and
- repeating the first fuel-pressure increase, wherein the first fuel-pressure increase is implemented for a predefined time period.
A control device of a motor vehicle having an internal combustion engine for performing the following:
- supplying fuel under a pressure to a fuel accumulator;
- injecting the fuel into a combustion chamber of the engine via a fuel injector;
- ascertaining a coking of the fuel injector;
- implementing a first fuel-pressure increase if the coking exceeds a threshold value;
- and
- repeating the first fuel-pressure increase, wherein the first fuel-pressure increase is implemented for a predefined time period.
An internal combustion engine of a motor vehicle comprising a control device for performing the following:
- supplying fuel under a pressure to a fuel accumulator;
- injecting the fuel into a combustion chamber of the engine via a fuel injector;
- ascertaining a coking of the fuel injector;
- implementing a first fuel-pressure increase if the coking exceeds a threshold value;
- and
- repeating the first fuel-pressure increase, wherein the first fuel-pressure increase is implemented for a predefined time period.
Dependencies are inferred from the claim text.