1. Final Design Review

2. Outline Brief review of the project Surface photography Conclusions about polishing Methods used to measure surface area and polish Quality control Basics of WLI and mechanical stylus surface metrology Lubrication theory Cost Analysis Spring Plan

3. Review Hydraulic lash adjuster Valve roundness and seat polish

4. Review Current Quality Test

5. Review Purpose of Lash Adjuster

6. This Semester Current polishing: bad results –Scratching Grooves –Creating Peaks & Valleys Electron Microscope In depth analysis of plunger geometry –Comparison of actual and ideal Identified variables and designed suitable testing procedures for the spring –Material –Rotational Speed & Direction –Polish Time –Pressure of Polishing Stone

7. Polishing Process Polished SectionUnpolished Section

8. Polishing Process Polished Section Unpolished Section

9. Method for calculating area In theory, Very simple A = 2*π*r*h A=.628319 mm^2 Actually very difficult

10. Test Plan Preliminary High-Res Photography Polishing test variables will include: –Material –Rotational Speed –Time of Polish –Pressure of Polishing Stone –Rotational Direction

11. Quality Control Method Optical Metrology (surface measuring) advantage over mechanical stylus Programmability, Repeatability, Speed Veeco Wyko NT9300 $170,000 plus objectives (lenses) Products at USF campus, Ft. Myers, Philadelphia, FSU-FAMU COE IE Sample Tray

12. Lubrication Theory Fluid dynamics in small spaces Relate valve profile and surface roughness to leak (Failure prevention vs. Failure detection) Deviation of roundness= r Surface roughness = s f(r,s) = Leak rate

13. Cost Analysis Cost per hour to run polishing machines Daily Cost Operator Cost Annual Cost Saving

14. Cost Analysis Chart

15. Spring Plan

16. Acquire multiple parts for testing Acquire permits for machine use Implement test procedures Prepare a final report

17. On the Web http://www.eng.fsu.edu/~willibe/gt10