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An error reporting method and system for low efficiency of an automobile and its simulated scr system

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

Active Publication Date: 2021-06-25
安徽汉马发动机有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • An error reporting method and system for low efficiency of an automobile and its simulated scr system
  • An error reporting method and system for low efficiency of an automobile and its simulated 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 simulating the low efficiency of an SCR system, comprising: acquiring NOx emission data of multiple sets of SCR catalytic conversion faulty parts; judging whether the NOx emission data is greater than a preset error reporting limit, and if so, reporting a failure . The invention also discloses an error reporting system with low efficiency of the simulated SCR system and a vehicle comprising the error report system with low efficiency of the simulated SCR system. The above-mentioned low-efficiency error reporting method of simulating the SCR system can simulate the whole life of the vehicle. If the exhaust post-processor fails and the emissions exceed the OBD limit, the driver’s alarm system will be activated by reporting the failure, so as to remind the driver as soon as possible. Repair; in this way, the fault report of low conversion efficiency of simulated NOx can be satisfied, so that the requirement of real-time monitoring of the purification performance of the exhaust post-processor in the 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 Patents(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 安徽汉马发动机有限公司
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