Method for calibrating pressure difference value, terminal equipment and storage medium
A correction method and pressure difference technology, applied in mechanical equipment, electric control of exhaust treatment devices, diagnostic devices of exhaust treatment devices, etc., can solve problems such as misjudgment in the regeneration process, and achieve the effect of improving service life
Inactive Publication Date: 2020-03-17
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0005] The main purpose of the embodiments of the present invention is to provide a method for correcting the differential pressure value, aiming to solve the technical problem of misjudgment in the prior art when starting the regeneration process of carbon particles in the particulate filter directly based on the measured differential pressure value
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[0029] It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0030] The main solution of the embodiment of the present invention is to obtain the test pressure difference value measured by the pressure difference sensor at both ends of the particle trap; when the measured pressure difference value is greater than or equal to the critical pressure difference value, according to the test pressure difference, the cumulative running time of the engine, the cumulative running time of each working condition, and the correction coefficient of each working condition to obtain the corrected differential pressure value; when the corrected differential pressure value is greater than or equal to the critical differential pressure value, the control unit The engine is operated with preset operating parameters to remove the carbon particles in the particulate filter; the accu...
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The invention discloses a method for calibrating a pressure difference value. The method includes the steps that the tested pressure difference value measured by pressure difference sensors at the twoends of a particle trap is acquired; when the measured pressure difference value is larger than or equal to a critical pressure difference value, the calibrated pressure difference value is acquiredaccording to the tested pressure difference value, the cumulative operation total duration of an engine, the cumulative operation duration of all working conditions and correction coefficients of allthe working conditions; when the calibrated pressure difference value is larger than or equal to the critical pressure difference value, the engine is controlled to run according to preset operation parameters, so that carbon particles in the particle trap are removed; and the cumulative operation total duration and the cumulative operation duration of all the working conditions are reset. The invention further discloses terminal equipment and a storage medium. By comparing the calibrated pressure difference value with the critical pressure difference value, the engine is controlled to ignitethe carbon particles in the particle trap, the particle trap is regenerated when really needing to be regenerated, and the service life of the particle trap can be effectively prolonged.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for correcting a pressure difference value, a terminal device and a storage medium. Background technique [0002] A particulate filter is a ceramic filter installed in the exhaust system of a gasoline or diesel engine that traps carbon particles, thereby reducing the emission of air-polluting particulate matter. The mass of carbon particles in the particulate filter is the carbon load. When the carbon load reaches a certain critical value, the carbon particles in the particulate filter need to be removed by combustion. This process is the regeneration process of the particulate filter. . [0003] At present, whether to start the regeneration process of the particle filter is generally determined by the pressure difference value at both ends of the particle filter, and the regeneration process is started when the pressure difference value reaches a critical pressure ...
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IPC IPC(8): F01N11/00F01N9/00F02D41/02
CPCF01N9/002F01N11/00F01N2430/00F01N2560/08F01N2900/0601F01N2900/08F01N2900/1606F02D41/029Y02T10/40
Inventor 胡璋林黄伟程剑峰刘前平蒯家琛孙伟莉葛娟娟张新宇张汉桥蒋茂玎
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD