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Recognizing MAHLE Pistons Finding Information

Recognizing MAHLE Pistons Finding Information. Today’s Example- Dodge Sprinter. Ideal Conditions: Brand New Piston!. GRAFAL ® Skirt Coating. GRAFAL ® Coating Reduces Scuffing Reduces Friction. Ni-Resist / Armored Top Ring Groove. Ni-Resist Top Ring Groove Armored

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Recognizing MAHLE Pistons Finding Information

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  1. Recognizing MAHLEPistonsFinding Information Today’s Example- Dodge Sprinter

  2. Ideal Conditions: Brand New Piston!

  3. GRAFAL® Skirt Coating • GRAFAL® Coating • Reduces Scuffing • Reduces Friction

  4. Ni-Resist / Armored Top Ring Groove • Ni-Resist Top Ring Groove • Armored • Gallery Cooled Design

  5. Identifying A MAHLE Ring Cooled Design • Gallery Cooling Inlet

  6. Understanding MAHLE Markings • Metric Diameter • Minimum Skirt Clearance • MAHLE Production Number

  7. Manufacturing Codes • Front Of Engine Indicator • MAHLE Production Markings

  8. Casting Number • Piston Number • Inside Of Piston • Bore Size Range • Piston Type • Mold Number • Mold Modifications

  9. Are Aftermarket Pistons Different than OE? • Sometimes! • Gasoline replacement pistons are usually reduced compression ht. • Diesel are more and more same as OE • Oil cooled • Profiled pin bores • Special coatings • Profiled shapes

  10. Thermal Expansion: Piston w/o Profile Room Temperature Operating Temperature 19 MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE

  11. Piston Deformation Temperature Temperature+Inertia+Pressure+Sideforcemax [mm] [mm] Exhaust Valve Larger Deformation ATS TS ATS TS 23 MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE

  12. Improving Pin Bore Strength by Adjustmentsof the Pin Bore Geometry 28 © MAHLE MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008

  13. Increase of lifetime Due to Single Ovality in the Pin Bore 29 © MAHLE MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008

  14. Using the Web • http://www.motorenteile.mahle.com/eLIZA/mahle/query/engine/byParams

  15. Pistons/Cylinders/Kit sets Piston and pin dimensions in mm KH-comp height UH-dome height VT-valve recess MO-comb chamber diameter GL-total length AA-distance between pin bosses

  16. Piston/Cylinders/Kit sets Piston ring mounting-shown in listing ring width in mm Cylinderbore in mm Piston with rings,pin and clips-part number

  17. Piston/Cylinders/Kit sets Liner part number Assembly part number Piston head configuration

  18. Piston/Cylinders/Kit sets Liner dimensions in mm

  19. Practice

  20. Summary MAHLE 224-3364 Dodge Sprinter / Mercedes Benz • Phosphate Coating • Oval Profiled Piston Pin Bore • GRAPHAL® Coated Skirt • Ni-Resist / Armored Top Ring Grove • Cooled Top Ring Design • Comes With Rings Installed

  21. Contact Information http://www.mahleclevite.com/askclevite.asp http://www.mahle-aftermarket.com/C12570B3006C0D49/CurrentBaseLink/W26MNK9W508STULEN http://catalog.mahleclevite.com/

  22. Questions?? • Bill.mcknight@us.mahle.com • 800-338-8787-7895 • 419-689-2611

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