Method, device, equipment and storage medium for monitoring collection efficiency of particulate filter

A particle trap and capture efficiency technology, which is applied in mechanical equipment, electronic control of exhaust gas treatment devices, diagnostic devices of exhaust gas treatment devices, etc. The monitoring process is unstable and the results are inaccurate, and the cycle is stable.

Active Publication Date: 2021-11-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a particle trap collection efficiency monitoring method, device, equipment and storage medium, aiming to solve the problem of unstable monitoring process and errors in the results of particle trap system performance monitoring in the prior art technical issues

Method used

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  • Method, device, equipment and storage medium for monitoring collection efficiency of particulate filter
  • Method, device, equipment and storage medium for monitoring collection efficiency of particulate filter
  • Method, device, equipment and storage medium for monitoring collection efficiency of particulate filter

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no. 1 example

[0068] Based on the first embodiment above, the step S10 of the method for monitoring the collection efficiency of the particle filter in this embodiment includes:

[0069] Step S101: Obtain the current cycle measurement value of the particle trap system.

[0070] It can be understood that the measured value of the current cycle may be the current carbon accumulation amount, or the original carbon emission amount of the engine. The specific acquisition process is: determine the current time, calculate through the preset formula, and determine the measured value of the current period.

[0071] Specifically, in order to obtain an appropriate monitoring period and make the test results more accurate, step S101 includes: obtaining the engine’s original carbon emission accumulation rate; determining the engine’s original carbon emission accumulation rate according to the engine’s original carbon emission accumulation rate and the current accumulation time; The original carbon emis...

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Abstract

The invention belongs to the technical field of particle filter for diesel vehicles, and discloses a method, device, equipment and storage medium for monitoring the collecting efficiency of a particle filter. The method includes: acquiring the carbon accumulation output value of the particulate filter system within a preset monitoring period; comparing the carbon accumulation output value with a calibration threshold; when the carbon accumulation output value is less than the calibration threshold, obtaining The monitoring results of the low collection efficiency of the particle filter. Through the above method, the use of PM sensors with poor measurement accuracy and unstable signal feedback is avoided, and the collection efficiency of the particle filter can be monitored in real time according to the carbon accumulation output value in the preset monitoring period, and the period is stable, which solves the existing problem In the technology, the method of monitoring the performance of the particle filter system is unstable and the results have errors in the monitoring process.

Description

technical field [0001] The invention relates to the technical field of particle filter for diesel vehicles, in particular to a method, device, equipment and storage medium for monitoring the collection efficiency of a particle filter. Background technique [0002] Heavy-duty diesel engines use the DPF (diesel particulate filter) system to deal with the soot in the exhaust, which has become the mainstream means of emission control. The DPF system absorbs the soot in the engine exhaust through the carrier and stores the soot particles in the On the DPF carrier, when the soot accumulates to a certain extent, the DPF system will burn the soot on the carrier through the regeneration function to generate CO2 (carbon dioxide), which will be discharged with the engine exhaust. [0003] According to the requirements of the National VI regulations, the OBD system (on-board self-diagnosis system) should have the monitoring function of the DPF system performance. In the DPF performance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N11/00
CPCF01N11/00F01N2550/04F01N2900/1606Y02T10/40
Inventor 詹坤李庆王云鹏赵小虎刘海报李超邱文龙
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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