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

Method for predicting leakproofness assembling quality of remanufactured cylinder heads of automobile engines

A technology for automobile engine and quality prediction, which is applied in the field of prediction and achieves significant technical and economic effects

Inactive Publication Date: 2014-03-19
HEFEI UNIV OF TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems and deficiencies in the quality and safety performance of remanufactured products have become the bottleneck of the large-scale development of the remanufacturing industry

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
  • Method for predicting leakproofness assembling quality of remanufactured cylinder heads of automobile engines
  • Method for predicting leakproofness assembling quality of remanufactured cylinder heads of automobile engines
  • Method for predicting leakproofness assembling quality of remanufactured cylinder heads of automobile engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. The comprehensive uncertainty of each cylinder head air hole in different batches

[0031] The quality standards for intake and exhaust holes of remanufactured cylinder heads provided by the Engine Technology Center are shown in the table below:

[0032]

[0033] On the basis of data collation and experimental verification, we took the research data of the uncertainty of the remanufactured cylinder head and the first-time assembly pass rate in 12 months of 2012. Among them, this type of cylinder head has a total of 8 air holes, 4 air intake holes and 4 exhaust holes. According to the roundness, longitudinal and transverse diameter information of the intake and exhaust holes of the remanufactured cylinder head. The average comprehensive uncertainty of each hole of each batch of cylinder head is calculated by the formula.

[0034]

[0035] 2. Establishment of nonlinear model and solution

[0036] Since the impact of the comprehensive uncertainty of each cylind...

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 method for predicting leakproofness assembling quality of remanufactured cylinder heads of automobile engines, wherein the method is used for predicting the failure rate of leakproofness of the remanufactured cylinder heads in an assembling process of the automobile engines. The method includes the following steps that (1) comprehensive uncertainties of remanufactured cylinder head pores of different batches are figured out, and average comprehensive uncertainties of n pores of t batch remanufactured cylinder heads in various batches are measured; (2) establishment of a nonlinear model and solving are carried out, wherein the nonlinear model between leakproofness of inlet holes and vent holes and the comprehensive uncertainties of the remanufactured cylinder heads is obtained and can be used for predicting leakproofness assembling quality of remanufactured cylinder heads of the next batch. According to the method, the yield of assembling leakproofness of the remanufactured cylinder heads can be effectively predicted, and decision supports are provided for improvement on remanufacturing processes of cylinder heads of automobile engines.

Description

technical field [0001] The invention relates to a prediction method, in particular to a method for predicting the sealing assembly quality of a remanufactured cylinder head of an automobile engine. Background technique [0002] The contradiction between economic growth and environmental resources is becoming more and more acute. Problems such as energy shortage and environmental pollution in the operation of the world economy have seriously restricted the normal and efficient development of the economy. Facing the increasingly prominent pressure on natural resources and the ecological environment, governments of various countries have passed legislation to order manufacturers to be responsible for the entire life cycle of products in order to save resources and protect the environment, and promote the transformation of economic growth mode. With the enhancement of consumers' awareness of environmental protection and the increasing emergence of business opportunities in the r...

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
IPC IPC(8): G06F19/00
Inventor 刘明周刘从虎邵将邢玲玲梅发东葛茂根张彦如张铭鑫扈静梁平刘长义温海峻
Owner HEFEI UNIV OF TECH
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