Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vehicle emission control method and vehicle

An emission control and vehicle technology, which is applied in the field of vehicles, can solve the problems of substandard exhaust emissions and achieve the effects of ensuring emission standards, improving concentration, and reducing air pollution

Active Publication Date: 2022-04-15
WEICHAI POWER CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vehicle emission control method and a vehicle to solve the problem in the prior art that the exhaust emission of a faulty vehicle during operation is not up to standard

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle emission control method and vehicle
  • Vehicle emission control method and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The invention provides a vehicle, the vehicle includes an OBD system, a control system and an engine system, the OBD system can monitor the failure of the vehicle and give an alarm; the control system can receive and analyze the failure signal sent by the OBD system, and through the OBD system, the vehicle engine The system takes control.

[0044] Specifically, the vehicle further includes a crankshaft speed sensor, which is used to detect the crankshaft speed of the engine.

[0045] Among them, in order to meet the requirements of the OBD emission regulations, the vehicle emission control method in the prior art, when the OBD system detects that the vehicle is faulty, it will send a fault signal to the vehicle control system and give an alarm. However, when the vehicle breaks down, such as misfire or the EGR flow rate is not within the set flow range, in the prior art, the engine system of the vehicle is not controlled after the vehicle breaks down, resulting in the fa...

Embodiment 2

[0065] This embodiment includes the vehicle of Embodiment 1. In the vehicle emission control method of this embodiment, the EGR flow is not within the set flow range as an example, for example figure 2 As shown, the vehicle emission control method of this embodiment includes the following steps.

[0066] S200, the vehicle is powered on.

[0067] S210, judging whether the engine is started;

[0068] If the engine starts, proceed to S220;

[0069] If the engine does not start, start the engine. And go to S220.

[0070] S220, judging whether the vehicle has an OBD failure;

[0071] If the vehicle has an OBD failure, go to S230.

[0072] S230. According to the fault code, it is judged that the OBD fault is engine misfire or the EGR flow rate is not within the set flow range;

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of vehicles, and discloses a vehicle emission control method and a vehicle. The vehicle emission control method comprises the steps that a vehicle is powered on, and an engine is started; judging whether the vehicle has an OBD fault or not; if the vehicle has the OBD fault, the air-fuel ratio of the engine is corrected according to the correction coefficient; wherein the OBD fault comprises engine misfire and / or the EGR flow is not in a set flow range; the correction coefficient comprises a misfire correction coefficient or an EGR flow correction coefficient, the misfire correction coefficient is at least determined by the crankshaft acceleration, and the EGR flow correction coefficient is at least determined by the EGR pressure. Corresponding correction factors are adopted to correct the air-fuel ratio of the engine according to specific fault reasons, so that combustion products of fuel are changed by adjusting the mass ratio of air to fuel in mixed gas in an air cylinder of the engine, and the concentration of oxynitride in tail gas after a vehicle breaks down is improved. And the emission of tail gas after the vehicle breaks down reaches the standard.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle emission control method and a vehicle. Background technique [0002] In order to meet the requirements of OBD (On-Board Diagnostics) emission regulations, the vehicle emission control method in the prior art, when the OBD system detects that the vehicle fails, it will send a fault signal to the vehicle's control system and give an alarm. . However, when the vehicle breaks down, such as misfire or the EGR flow rate is not within the set flow range, in the prior art, the engine system of the vehicle is not controlled after the vehicle breaks down, resulting in the failure of the vehicle when it is running. Exhaust emissions are not up to standard. Contents of the invention [0003] The purpose of the present invention is to provide a vehicle emission control method and a vehicle, so as to solve the problem in the prior art that the exhaust emission of a faulty vehicl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02F02D41/04
CPCF02D29/02F02D41/04Y02T10/40
Inventor 谭辰李万洋潘永传岳崇会张成伟王焕阔
Owner WEICHAI POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com