Research And Application Of WP7 Gas Engine Cylinder Process

According to the national environmental protection requirements,the timely introduction of Weichai gas engine,gas engine from 6 to 13 liters basically covers all vehicle system,diesel engine,7 liters machine is the best choice for supporting the bus,is also the most potential for development,market demand,power coverage of(155-220)Kw,plus gas engine pollution small,cheap gas prices,the economy is good,is very popular with the market,under the background of Weichai WP7 series models for special project development,foundation for the development of gas engine is based on diesel engine,the biggest difference is the difference between the cylinder head is mounted injector and spark plug,this paper is to develop special gas cylinder head parts processing machine as the theme,through the feedback in production and market,to optimize the performance of the machine,to ensure the smooth output of the gas engine and has a good Market competitiveness.In this paper,the following aspects are studied:1,analysis of the structure of cylinder head,cylinder head of diesel engine and gas engine cylinder were analyzed structural analysis and process of comparison,and the gas engine spark plug special for part of the key process,to verify the process,confirm the feasibility of the technical scheme,Ensure that the output of the cylinder head with good air tightness,reduce probability of cylinder head is leaking;2,According to market feedback,high gas consumption Water Leakage special problem analysis,and set up a working group,comparison,reference WP10 gas engine cylinder liner on pressing process was improved and verified,by optimizing the airway structure and improve the design,finally to ensure the quality of cylinder cover,achieve the design index of gas engine and achieved good customer satisfaction;3,through the use of statistical analysis method,on the field production of failure rate analysis,summary,and through the field of the quality improvement,increase inspection control means and other ways to solve the problem;4,through the focus on market feedback and focus tracking quality concerns,confirmed the feasibility and effectiveness of the implementation of the improvement program.Through the field of cylinder head the implementation process and implementation,improved bushing pressing technology,can effectively solve the problem of cylinder head Water Leakage,at the same time,through the bench test and the performance of the optimized design scheme of cylinder head verification,solve the market feedback high gas consumption,won the customer satisfaction,finally reached the successful development of WP7 gas engine.