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OBD fault alarm method and alarm system for vehicle and vehicle

A fault alarm and vehicle technology, applied to alarm systems, alarms, vehicle components, etc., can solve the problems of easy false alarms and low alarm accuracy, and achieve good stability and robustness

Active Publication Date: 2021-06-22
ZHEJIANG GEELY HLDG GRP CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the first aspect of the present invention is to provide an OBD failure alarm method for vehicles, to solve the technical problems that the vehicle emission alarm method in the prior art is prone to false alarms and the alarm accuracy is low

Method used

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  • OBD fault alarm method and alarm system for vehicle and vehicle
  • OBD fault alarm method and alarm system for vehicle and vehicle
  • OBD fault alarm method and alarm system for vehicle and vehicle

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Embodiment Construction

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0039] figure 1 It is a schematic flowchart of an OBD failure alarm method for a vehicle according to an embodiment of the present invention. Such as figure 1 As shown, in a specific embodiment, the OBD fault warning method for vehicle comprises the following steps:

[0040] Step S100, continuously obtain the carbon dioxide content and pollutant content emitted by the vehicle when the vehicle meets the preset emission monitoring conditions;

[0041] Step S200, accumulatively calculate the carbon dioxide content of m...

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Abstract

The invention provides an OBD fault alarm method and alarm system for a vehicle and the vehicle, and relates to the field of vehicle engines. The method comprises the following steps: continuously acquiring the content of carbon dioxide and the content of pollutants discharged by the vehicle when the vehicle meets a preset emission monitoring condition; accumulatively calculating the carbon dioxide contents of a plurality of adjacent time periods, ending accumulatively calculating until an accumulatively calculated accumulated value reaches a preset accumulatively calculated value, recording the accumulatively calculated time period as a window, and taking the starting time period of the next window as the second time period of the previous window; calculating the pollutant emission value of each window according to the accumulated value of the pollutant content in each window and the operation parameter information of the vehicle; and finally, selectively controlling the vehicle to carry out OBD fault alarm according to the pollutant emission value of each window. According to the method, the emission value of the vehicle is calculated by adopting a window moving method, so whether OBD fault alarm needs to be carried out or not can be accurately judged in the actual driving process of the vehicle.

Description

technical field [0001] The invention relates to the field of vehicle engines, in particular to an OBD fault alarm method for vehicles, an alarm system and a vehicle. Background technique [0002] According to the requirements of the draft National VI emission standards for heavy-duty gasoline vehicles, hybrid heavy-duty gasoline vehicles will implement the National VI standards from July 1, 2023. Heavy-duty gasoline vehicles that meet the National VI emission standards must have the OBD threshold monitoring function. In real-time monitoring of emission levels and the status of pollution control devices. If there is a failure of the emission control device during the driving of the vehicle, and HC, CO, NOx, and PM increase abnormally, before exceeding the threshold of the OBD system (on-board diagnostic system), the OBD system needs to indicate the failure and turn on the MIL lamp (failure indicator light) to remind the driver that there is a fault that exceeds the standard ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/023F01N11/00G08B21/18
CPCB60R16/0237G08B21/18F01N11/007B60R2225/00Y02T10/40
Inventor 钱坤陈聪戴关林陈超
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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