Fault diagnosis method of cold start emission reduction system and vehicle thereof

A cold start and diagnosis technology, applied in the field of vehicles, can solve problems such as the difficulty of system failures, and achieve the effect of ensuring accuracy

Inactive Publication Date: 2022-03-08
HYUNDAI MOTOR CO LTD +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, cold start system failure diagnosis is a method in which various components are connected to each other so that each component has no failure, but there is difficulty in diagnosing the occurrence of system failure in which emissions are systematically increased

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
  • Fault diagnosis method of cold start emission reduction system and vehicle thereof
  • Fault diagnosis method of cold start emission reduction system and vehicle thereof
  • Fault diagnosis method of cold start emission reduction system and vehicle thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments thereof, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the other hand, the present invention is intended to cover not only the exemplary embodiments of the present invention, but also various alternatives, modifications, equivalents and alternatives, which may be included within the spirit and scope of the present invention as defined by the appended claims. other examples.

[0034] Hereinafter, exemplary various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and exemplary embodiments of the present invention can be used as examples by those skilled in the art to which various exemplary ...

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 discloses a fault diagnosis method of a cold start emission reduction system and a vehicle thereof. The method confirms a change in torque reserve compared to a torque reserve confirmed for ignition timing at cold start by any one of operation of an electrical load device, operation of an alternator, operation of a purge valve, operation of an air conditioner, a shift state of a transmission, and a coolant temperature state of an engine, and determining a failure or normality of any one of an electrical load device, an alternator, a purge valve, and an air conditioner using a change in the torque reserve to apply a determination result to determine whether the cold start E / M reduction system is abnormal, thereby ensuring accuracy of failure diagnosis of components for cold start E / M reduction.

Description

technical field [0001] The present invention relates to a cold start control, and in particular to a vehicle that passes the idle torque reserve due to the operation of the E / M reduction system compared to the maximum braking torque (MBT) delayed Changes in Idle Torque Reserve to Achieve Cold Start Emissions (E / M) Reduction System Fault Diagnosis. Background technique [0002] Since the generation of emissions increases at the time of cold start of the vehicle, cold start control for emission reduction is performed. [0003] As an example, cold start control performs cold start system fault diagnosis based on engine revolutions per minute (RPM), and cold start system fault diagnosis is performed for injectors that inject fuel, spark plugs for combustion, advance for adjusting cams A continuously variable valve timing (CVVT) system of angle / retard angle phase timing and the like are implemented. Therefore, cold start control helps to suppress the increase of emissions durin...

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): F02D41/22B60W30/18
CPCF02D41/22B60W30/18009F02D41/064F02D2250/22F02D41/08F02D2200/021F02D41/0225F02D37/02F02P5/1506F02N19/004F02N11/10Y02T10/40F02P5/1502F02D41/004F02M25/0809F02D2200/101G07C5/006B60W2510/0657B60W30/18109G07C5/0808
Inventor 具本昌
Owner HYUNDAI MOTOR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap