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Method for regenerating an Otto particulate filter of a combustion engine of a vehicle

A combustion engine and particle filter technology, applied in the direction of combustion engine, internal combustion piston engine, engine components, etc., can solve the problems of increased material consumption, poor operation mode, low efficiency, etc., and achieve the effect of reducing regeneration time and improving regeneration speed

Active Publication Date: 2021-11-02
DR ING H C F PORSCHE AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The disadvantage of known solutions is that the Otto particle filter either has to be replaced at high load levels or should be regenerated during vehicle operation
This likewise resulted in increased material consumption as a new Otto particle filter was required as a backup
Regeneration during continuous operation of the vehicle may prolong the operating time of the Otto particulate filter, but this is associated with a poorer mode of operation and thus with a corresponding inefficiency of regeneration and operation during the regeneration phase

Method used

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  • Method for regenerating an Otto particulate filter of a combustion engine of a vehicle
  • Method for regenerating an Otto particulate filter of a combustion engine of a vehicle
  • Method for regenerating an Otto particulate filter of a combustion engine of a vehicle

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Embodiment Construction

[0042] exist figure 1 A combustion engine 100 with six cylinders 110 is shown schematically in FIG. Separate branches of the exhaust system 120 are provided for each of three of the cylinders 110 of the combustion engine 100 . In order to be able to ensure aftertreatment of the exhaust gas of the individual cylinders 110 , a catalytic converter KAT and an Otto particle filter OPF are provided in the exhaust system 120 for each exhaust branch.

[0043] Now, regeneration of the Otto particulate filter OPF is performed as follows. In a first step, the load level of the Otto particulate filter OPF and especially the correlation when exceeding the regeneration threshold can be identified. Therefore, if regeneration has to be performed due to excessive load levels of the Otto particulate filter OPF, the vehicle is advantageously at a standstill, in particular on a vehicle stand in a workshop.

[0044] Now, by means of the control device 10 (such as its image 3 shown schematical...

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Abstract

The invention relates to a method for regenerating an Otto particulate filter (OPF) of a combustion engine (100) of a vehicle, the method comprising the steps of: identifying that the load level of the Otto particulate filter (OPF) is higher than the regeneration threshold, operating the combustion engine (100) in warm-up operation (AB) to heat the Otto particulate filter (OPF) to a temperature threshold (TS), at least one cylinder (110) of the combustion engine (100) from The fuel supply (K) is switched to an air supply (L) to continue operating at least one cylinder (110) of the combustion engine (100) with the fuel supply (K).

Description

technical field [0001] The invention relates to a method for regenerating an Otto particle filter of a combustion engine of a vehicle and to a control device for carrying out such a method. Background technique [0002] It is known that vehicles with combustion engines have devices for aftertreatment of the exhaust gases of the combustion engines. In particular to prevent soot particles from escaping into the environment, Otto particle filters in combustion engines are known which trap soot particles in the exhaust gas of the combustion engine and prevent the soot particles from escaping into the environment middle. Thus, such an Otto particle filter is loaded with individual soot particles over time and the load state increases. Once the Otto particle filter has reached a high load state, it can no longer perform the function of filtering the exhaust gas, or only insufficiently. At the latest, the Otto particle filter needs to be regenerated or replaced in order to keep ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/023F01N9/00
CPCF01N3/023F01N9/002F01N2430/00F01N2900/08F01N2900/1602F01N2900/1606F02D17/02F02D41/0087F02D41/024F02D41/029Y02T10/12Y02T10/40F02D13/0219F02D41/04
Inventor M·朗格格尔M·赖因哈特
Owner DR ING H C F PORSCHE AG
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