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Automobile and error reporting method and system thereof for low efficiency of SCR system

A technology of SCR system and low efficiency, which is applied in the field of engine testing and can solve problems such as low filtration efficiency and excessive NOx emissions

Active Publication Date: 2020-06-26
ANHUI HUALING AUTOMOBILE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0018] Therefore, how to avoid the SCR system in the prior art that cannot simulate a diesel engine and cause NOx emissions to exceed the standard due to too low filtration efficiency is a technical problem that those skilled in the art need to solve at present

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  • Automobile and error reporting method and system thereof for low efficiency of SCR system
  • Automobile and error reporting method and system thereof for low efficiency of SCR system

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Embodiment Construction

[0051] 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 only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] The core of the present invention is to provide an error reporting method for simulating the low efficiency of the SCR system. The method can simulate the situation that the emission exceeds the OBD limit if the exhaust after-processor fails within the entire life of the vehicle, and then prompts the driver through an error report. Another core of the present invention is to provide an error reporting system with low efficiency of the simulated SCR syste...

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Abstract

The invention discloses an error reporting method for low efficiency of an SCR system. The method comprises the steps that NOx emission data of a plurality of groups of SCR catalytic conversion faultparts are acquired; and whether the NOx emission data is larger than a preset error reporting limit value or not is judged, and if yes, a fault is reported. The invention further discloses an error reporting system for the low efficiency of the SCR system and an automobile comprising the error reporting system for the low efficiency of the SCR system. According to the error reporting method for the low efficiency of the SCR system, the condition that the emission exceeds the OBD limit value due to the fault of a post-discharge processor can be simulated in the whole service life of the automobile, and a driver alarm system is further activated by reporting a fault so as to prompt the driver to repair the fault as soon as possible; and in this way, failure reporting of the low NOx conversion efficiency can be simulated, and the requirement of monitoring the purification performance of the post-discharge processor in real time in regulations can be met.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to an error reporting method for simulating low efficiency of an SCR system. The invention also relates to an error reporting system with low efficiency of the simulated SCR system and a vehicle with the low efficiency error report system of the simulated SCR system. Background technique [0002] At present, many kinds of automobile exhaust treatment technologies have been proposed and are in the state of research and development, among which technologies such as catalytic oxidation (DOC), diesel particulate filter (DPF), NOx selective catalytic reduction (SCR) have been put into practical use. The selective catalytic reduction technology can accelerate the reduction of NOx in the exhaust gas to nitrogen and water, and can effectively inhibit the oxidation reaction. It can greatly increase the conversion rate of NOx without reducing the engine efficiency, and has better fuel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N11/00
CPCF01N11/00F01N2900/04Y02T10/40Y02A50/20
Inventor 赵小龙马明贺茂林张健严抱璞王涵
Owner ANHUI HUALING AUTOMOBILE
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