Catalytic converter diagnosis method and device and vehicle

A diagnostic method and catalytic converter technology, which is applied in the field of vehicles, can solve problems such as increased emissions, and achieve the effects of reducing the impact on the environment, avoiding abnormalities, and avoiding increased emissions

Active Publication Date: 2021-06-01
BEIJING CHJ AUTOMOTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Embodiments of the present invention provide a catalytic converter diagnosis method, device, and vehicle to solve the problem that the existing catalytic converter deterioration diagnosis is usually carried out when the vehicle is running under load, resulting in increased emissions

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  • Catalytic converter diagnosis method and device and vehicle
  • Catalytic converter diagnosis method and device and vehicle
  • Catalytic converter diagnosis method and device and vehicle

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Embodiment Construction

[0072]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0073] See figure 1 , figure 1 It is a flowchart of a method for diagnosing a catalytic converter provided by an embodiment of the present invention, such as figure 1 As shown, the catalytic converter diagnosis method includes the following steps:

[0074] Step 101, when the vehicle satisfies the preset diagnostic condition of the catalytic converter, acquire the diagnostic condition identifier of the catalytic converter.

[0075] It should be noted ...

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Abstract

The invention provides a catalytic converter diagnosis method and device and a vehicle. The catalytic converter diagnosis method is applied to an extended-range vehicle and comprises the steps that under the condition that the vehicle meets a preset catalytic converter diagnosis condition, a catalytic converter diagnosis condition identifier is obtained; when the vehicle is started again, whether the vehicle still meets the preset diagnosis condition or not is judged; and if the vehicle still meets the preset diagnosis condition, an engine is controlled to idle, and catalytic converter diagnosis is carried out. According to the technical scheme, the problem that emission is increased due to the fact that existing catalytic converter degradation diagnosis is usually carried out in the on-load running process of the vehicle is solved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a catalytic converter diagnosis method, device and vehicle. Background technique [0002] The three-way catalytic converter is one of the indispensable and important components in the vehicle system. It is installed in the exhaust system of the vehicle and can convert the CO, HC and NO produced by the vehicle. x Such harmful gases undergo oxidation-reduction chemical reactions and are converted into CO 2 、H 2 O, N 2 , thereby purifying automobile exhaust. The three-way catalytic converter is an effective way to reduce emissions. If the three-way catalytic converter deteriorates, it will not function as a catalytic converter and affect emissions. Therefore, catalytic converter degradation diagnosis is one of the key technologies in the vehicle detection system. However, the existing catalytic converter degradation diagnosis is usually performed when the vehicle is running un...

Claims

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Application Information

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IPC IPC(8): F01N11/00F02D41/02F02D41/08
CPCF01N11/00F01N2560/025F02D41/0235F02D41/08Y02T10/40
Inventor 李川
Owner BEIJING CHJ AUTOMOTIVE TECH CO LTD
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