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© MAHLE Recognizing MAHLE Pistons Finding Information Today’s Example- Dodge Sprinter.

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Presentation on theme: "© MAHLE Recognizing MAHLE Pistons Finding Information Today’s Example- Dodge Sprinter."— Presentation transcript:

1 © MAHLE Recognizing MAHLE Pistons Finding 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 19 MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE Thermal Expansion: Piston w/o Profile Room Temperature Operating Temperature

11 23 MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE Piston Deformation Temperature Exhaust Valve Larger Deformation ATSTS [mm] Temperature+Inertia+Pressure+Sideforce max [mm] ATSTS

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

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

14 Using the Web

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 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 aftermarket.com/C12570B3006C0D49/CurrentBaseLink/W26MNK9W508S TULEN

22 Questions??


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