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Vehicle DPF protection method and system

A protection system and DPF technology, applied in exhaust gas treatment, electrical control, mechanical equipment, etc., can solve problems such as low monitoring accuracy, lower DPF reliability, and increased engine fuel consumption

Pending Publication Date: 2022-03-08
FAW JIEFANG AUTOMOTIVE CO
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing technology, the accuracy of monitoring is low; and after the carbon accumulation rate in the DPF is recognized to be accelerated, the carbon accumulation in the DPF is directly corrected. This method not only increases the fuel consumption of the engine, but also because the DPF regeneration is more frequent , also reduces the reliability of the DPF

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  • Vehicle DPF protection method and system
  • Vehicle DPF protection method and system
  • Vehicle DPF protection method and system

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Embodiment Construction

[0048] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0049] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...

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Abstract

The invention relates to a vehicle DPF protection method and system. The vehicle DPF protection method comprises the steps that whether the oxygen concentration value in vehicle exhaust gas is in an over-low state or not is judged; whether the concentration value of nitric oxide in the vehicle exhaust gas is in an over-low state or not is judged; if the oxygen concentration value and the nitrogen oxide concentration value in the vehicle exhaust gas are both in an over-low state, the fuel injection quantity of an engine of the vehicle is adjusted until the oxygen concentration value and the nitrogen oxide concentration value in the vehicle exhaust gas are both increased to a preset reasonable interval; by judging whether the oxygen concentration value in the vehicle exhaust gas is in an over-low state or not and judging whether the nitrogen oxide concentration value in the vehicle exhaust gas is in an over-low state or not, the gas concentration in the vehicle using process is accurately monitored; according to the method for optimizing combustion by adjusting the fuel injection quantity of the engine, the problems are solved from the source, the use reliability of the DPF is improved, and the purposes of low fuel consumption and high reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle DPF protection method and protection system. Background technique [0002] In recent years, with the stricter emission limits of particulate matter in diesel engine emissions under the Diesel National VI emission regulations, it is required to install DPF (Diesel Particulate Filter, Diesel Particulate Filter) after diesel oil treatment. DPF can efficiently capture diesel combustion. Carbon particles, so the rate at which carbon particles accumulate in the DPF is closely related to the combustion conditions in the engine cylinders. When the air-fuel ratio of the air-fuel mixture entering the cylinder is low, the combustion will deteriorate and the carbon particles produced will increase. At this time, the rate of accumulating carbon particles in the DPF will be accelerated, which means that the DPF is more prone to ablation or clogging due to excessive regeneration t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/14F01N11/00
CPCF02D41/1454F02D41/1461F01N11/00F01N11/007F01N2900/1611Y02T10/40
Inventor 张鹏于凯王明卿
Owner FAW JIEFANG AUTOMOTIVE CO
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