© mahle recognizing mahle pistons finding information today’s example- dodge sprinter
TRANSCRIPT
© MAHLE
Recognizing MAHLEPistonsFinding 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
– Gallery Cooled Design
Identifying A MAHLE Ring Cooled Design
Gallery Cooling Inlet
Understanding MAHLE Markings
Metric Diameter
Minimum Skirt Clearance
MAHLE Production Number
Manufacturing Codes
Front Of Engine Indicator
MAHLE Production Markings
Casting Number
Piston Number
– Inside Of Piston
– Bore Size Range
– Piston Type
– Mold Number
– Mold Modifications
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
19MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE
Thermal Expansion: Piston w/o Profile
Room Temperature Operating Temperature
23MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE
Piston Deformation
Temperature
Exhaust Valve Larger Deformation
ATS TS
[mm]
Temperature+Inertia+Pressure+Sideforcemax
[mm]
ATS TS
28MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE
Improving Pin Bore Strength by Adjustmentsof the Pin Bore Geometry
29MAHLE Industries, Incorporated, RDN, Wolfgang Rein, Feb-2008 © MAHLE
Increase of lifetime
Due to Single Ovality in the Pin Bore
Using the Web http://www.motorenteile.mahle.com/eLIZA/mahle/query/engine/byParams
Pistons/Cylinders/Kit sets
Piston and pin dimensions in mmKH-comp heightUH-dome heightVT-valve recessMO-comb chamber diameterGL-total lengthAA-distance between pin bosses
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
Piston/Cylinders/Kit sets
Liner part number
Assembly part number
Piston head configuration
Piston/Cylinders/Kit sets
Liner dimensions in mm
Practice
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
Contact Information
http://www.mahleclevite.com/askclevite.asp
http://www.mahle-aftermarket.com/C12570B3006C0D49/CurrentBaseLink/W26MNK9W508STULEN
http://catalog.mahleclevite.com/
