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Misfiring poor road detection method and system

A detection method and detection system technology, applied in the direction of circuits or fluid pipelines, transportation and packaging, vehicle parts, etc., can solve problems such as failure, judgment logic execution error, signal distortion, etc., and achieve the effect of improving accuracy and effectively

Inactive Publication Date: 2016-12-21
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Signal distortion or failure will occur when the acceleration sensor is used for a long time, which may lead to misfire and bad road judgment logic execution errors
[0008] (2) During model development, it is necessary to install a suitable acceleration sensor for each model, which increases the cost of model development

Method used

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  • Misfiring poor road detection method and system
  • Misfiring poor road detection method and system
  • Misfiring poor road detection method and system

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Embodiment Construction

[0045] In order to enable those skilled in the art to further understand the features and technical contents of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings and implementation methods.

[0046] Such as figure 1 Shown is a flow chart of the method for detecting fire and bad roads according to the embodiment of the present invention, which includes the following steps:

[0047] Step 101: Collect vehicle speed sensor signals and wheel speed sensor signals in real time, and execute step 102.

[0048] Step 102: According to the vehicle speed sensor signal and the wheel speed sensor signal, calculate the misfire and road damage index, and execute step 103.

[0049] Specifically, the calculating and obtaining the misfire and road damage index according to the vehicle speed sensor signal and the wheel speed sensor signal includes the following steps:

[0050] Step (A): According to the...

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Abstract

The invention relates to the technical field of automobile engines, in particular to a misfiring poor road detection method and system. The misfiring poor road detection method comprises the steps that a vehicle speed sensor signal and a wheel speed sensor signal are acquired in real time; a misfiring poor road index is obtained through calculation according to the vehicle speed sensor signal and the wheel speed sensor signal; whether the misfiring poor road index is larger than a misfiring threshold value or not is detected; and if yes, it is determined that the current road condition is a misfiring poor road. By the adoption of the misfiring poor road detection method and system, the judgment accuracy and effectiveness for misfiring poor roads are improved.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to a method and system for detecting fire and bad roads. Background technique [0002] Since the 1980s, major automobile manufacturers in the United States, Japan, and Europe have begun to equip their EFI vehicles with OBD (On-Board Diagnostic). Power and emissions control systems to monitor vehicle emissions. These monitorings include misfire monitoring, which refers to the phenomenon of misfire in a certain cylinder or certain cylinders of the engine. Misfire will lead to interruption of engine power, affecting driving experience; misfire will also cause unburned fuel-air mixture to enter the catalytic converter, resulting in excessive hydrocarbon emissions; serious misfire, such as a misfire rate of 25%, will After entering the catalyst, the catalyst will be damaged by combustion, thereby reducing the service life of the catalyst. [0003] Misfire monitoring is one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/023
CPCB60R16/0232
Inventor 韩俊王洪静韩晓峰张士路
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD