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The operation of an internal combustion engine under unfavorable operating conditions can lead to the formation of deposits in the combustion chamber (4). A method and an arrangement for operating an internal combustion engine (1), especially of a motor vehicle, is suggested, wherein fuel is conduct

The operation of an internal combustion engine under unfavorable operating conditions can lead to the formation of deposits in the combustion chamber (4). A method and an arrangement for operating an internal combustion engine (1), especially of a motor vehicle, is suggested, wherein fuel is conducted into a combustion chamber (4) and is there combusted. When deposits are detected in the combustion chamber (4), measures are initiated in a targeted manner for cleansing the combustion chamber (4). A knocking combustion is especially introduced and/or a cleansing liquid is added to the inducted combustion air.

대표청구항 ▼

1. A method for operating an internal combustion engine including an engine for a motor vehicle, the method comprising the steps of:directing fuel into a combustion chamber of said engine and combusting said fuel therein; drawing a conclusion as to deposits in said combustion chamber from at least m

1. A method for operating an internal combustion engine including an engine for a motor vehicle, the method comprising the steps of:directing fuel into a combustion chamber of said engine and combusting said fuel therein; drawing a conclusion as to deposits in said combustion chamber from at least monitoring the effects of a cylinder equalization during operation of said engine; and, thereafter initiating measures in a targeted manner for cleansing said combustion chamber while said engine continues to be in operation. 2. The method of claim 1, comprising at least one of the following further steps of:bringing about a knocking combustion to cleanse said combustion chamber; and, adding a cleansing or detergent liquid to combustion air inducted by said engine. 3. The method of claim 2, wherein said cleansing liquid is water.4. The method of claim 2, wherein said measures are conducted for a predetermined time duration.5. The method of claim 2, wherein said measures for cleansing said combustion chamber are carried out so long until no deposits are detected in said combustion chamber.6. The method of claim 5, wherein said measures for cleansing said combustion chamber are carried out only so long as no damage to said engine is to be expected.7. The method of claim 1, wherein said measures for cleansing said combustion chamber are carried out as a precaution at predetermined time intervals for a predetermined time duration.8. A method for operating an internal combustion engine including an engine for a mother vehicle, the method comprising the steps of:directing fuel into a combustion chamber of said engine and combusting said fuel therein; drawing a conclusion as to deposits in said combustion chamber from at least monitoring the effects of a cylinder equalization; thereafter initiating measures in a targeted manner for cleansing said combustion chamber; directly injecting fuel into the combustion chambers of said engine with the aid of injection valves in a first operating mode during a compression phase or in a second operating mode during an induction phase; continuously carrying out a misfire detection; when detecting misfires during operation of said engine in said first operating mode, then switching over into the second operating mode; and, when misfires also occur in the second operating mode, drawing a conclusion as to a general fault and starting additional diagnostic methods for narrowing down the fault causes. 9. The method of claim 1, wherein said engine is a diesel engine.10. A method for operating a direct-injecting internal combustion engine including an internal combustion engine of a motor vehicle, the method comprising the steps of:directly injecting fuel into the combustion chambers of said engine with the aid of injection valves in a first operating mode during a compression phase or in a second operating mode during an induction phase; continuously carrying out at least one of a cylinder equalization with monitoring of effects and a misfire detection; drawing a conclusion as to the coking of the injection valves when a fault signal of said monitoring of effects is present or, when detecting a misfire during operation of said engine in said first operating mode, switching over to said second operating mode; and, when no misfire occurs in said second operating mode, drawing a conclusion as to deposits on the nozzles of said injection valves or a coking of said injection valves. 11. The method of claim 10, comprising at least one of the following further steps of:bringing about a knocking combustion to cleanse said combustion chamber; and, adding a cleansing or detergent liquid to combustion air inducted by said engine. 12. The method of claim 11, wherein said cleansing liquid is water.13. The method of claim 11, wherein said measures are conducted for a predetermined time duration.14. The method of claim 11, wherein said measures for cleansing said combustion chamber are carried out so long until no deposits are detected in said combustion chamber.15. The method of claim 14, wherein said measures for cleansing said combustion chamber are carried out only so long as no damage to said engine is to be expected.16. The method of claim 10, wherein said measures for cleansing said combustion chamber are carried out as a precaution at predetermined time intervals for a predetermined time duration.17. A computer program comprising:program-code means for carrying out a method for operating an internal combustion engine when executed on a computer, the method including the steps of: directing fuel into a combustion chamber of said engine and combusting said fuel therein; drawing a conclusion as to deposits in said combustion chamber from at least monitoring the effects of a cylinder equalization during operation of said engine; and, thereafter initiating measures in a targeted manner for cleansing said combustion chamber while said engine continues to be in operation. 18. A control apparatus for operating an internal combustion engine including an internal combustion engine of a motor vehicle, the control apparatus comprising:means for controlling the supply of fuel into a combustion chamber of said engine and combusting said fuel therein; means for drawing a conclusion as to deposits in said combustion chamber from at least monitoring the effects of a cylinder equalization during operation of said engine; and, means for initiating measures in a targeted manner for cleansing said combustion chamber while said engine continues to be in operation. 19. An internal combustion engine including an engine for a motor vehicle, the internal combustion engine comprising:a cylinder and a piston conjointly defining a combustion chamber; means for metering fuel to said combustion chamber; and, a control apparatus functioning to: control the metering of fuel into a combustion chamber of said engine and combusting said fuel therein; draw a conclusion as to deposits in said combustion chamber from at least monitoring the effects of a cylinder equalization during operation of said engine; and, thereafter initiate measures in a targeted manner for cleansing said combustion chamber while said engine continues to be in operation.