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Anti-cheating method and system for a heavy-duty diesel vehicle and its engine post-processing

A heavy-duty diesel, engine technology, applied in engine components, combustion engines, machines/engines, etc., can solve problems such as increasing operating costs

Active Publication Date: 2021-12-21
安徽汉马发动机有限公司
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  • Claims
  • Application Information

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Problems solved by technology

The urea solution is a consumable, which does not increase any income for the users of the vehicle, but also increases the operating cost

Method used

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  • Anti-cheating method and system for a heavy-duty diesel vehicle and its engine post-processing
  • Anti-cheating method and system for a heavy-duty diesel vehicle and its engine post-processing
  • Anti-cheating method and system for a heavy-duty diesel vehicle and its engine post-processing

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0047] Please refer to figure 1 , the anti-cheating method of the engine aftertreatment of the heavy-duty diesel vehicle provided by the application comprises the following steps:

[0048] Step S1, obtaining the rotational speed and torque of the engine 1, and determining the first NOx concentration reference range through the rotational speed and torque;

[0049] Specifically, the rotational speed of the engine 1 and the torque of the engine 1 can be directly read by the ECU2. Di...

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Abstract

The application discloses a heavy-duty diesel vehicle and its engine post-processing anti-cheating method and system. The engine post-processing anti-cheating method of a heavy-duty diesel vehicle includes the following steps: obtaining the engine speed and torque, and determining the engine exhaust through the speed and torque. The first NOx concentration reference range between the gas end and the post-treatment catalyst; obtain the first NOx concentration detection value; judge whether the first NOx concentration detection value is within the first NOx concentration reference range; if not, send an alarm to the ECU command to make the alarm device sound an alarm, and / or send an external torque request command to the ECU to limit the output torque of the engine. The application can react when there is cheating in the post-processing system, limit the engine torque output or issue an alarm, force the driver to restore the normal working state of the NOx sensor, prevent the occurrence of emissions that do not comply with regulations, and achieve the effect of protecting the environment.

Description

technical field [0001] The present application relates to the technical field of post-processing, and more specifically, to a heavy-duty diesel vehicle and its engine post-processing anti-cheating method and system. Background technique [0002] The current national heavy-duty diesel engine emission regulations have certain requirements on the emission of nitrogen oxides in the exhaust. In this regard, various engine companies have added an after-treatment system to the design, and the after-treatment system needs to add urea solution to react with the nitrogen oxides in the exhaust gas. The urea solution is a consumable, which does not increase any income for the users of the vehicle, but also increases the operating cost. [0003] The NOx sensor (nitrogen oxide sensor) is a sensor that communicates through the CAN bus. One or two need to be used in the after-treatment system of China VI, and there may be more in the future. The inventor found that there is a cheating met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N11/00
CPCF01N11/002Y02T10/40
Inventor 张理志于洋曾卫良马明罗江翁海溶
Owner 安徽汉马发动机有限公司
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