Technical Information
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z
Engine serial No. (example 4 : PU158TI)
EAZPA 8 00001
Serial No.
Production Year(2008)
Engine Model Suffix
z
Engine serial No. (example 5 : PU180TI)
EASPA 8 00001
Serial No.
Production Year(2008)
Engine Model Suffix
z
Engine serial No. (example 6 : PU222TI)
EAYPA 8 00001
Serial No.
Production Year(2008)
Engine Model Suffix
2.2. Engines Characteristic
z
The generator engine(P158LE/P180LE/P222LE) and power unit engine(PU158TI/PU180TI/PU222TI)
series are V-type liquid-cooled 8/10/12-cylinder four-stroke Diesel engines with direct injection.
2.2.1. Oil gallery cooling type piston
z
Oil gallery cooling is used for the piston
of the engine.
z
When thermal loading is high, piston
cooling by means of an oil gallery in the
crown is normally necessary to prevent
crown cracking and ring sticking. The
design of the gallery, the design and
location of the oil spray nozzle and the
quantity of oil flowing in the gallery are
critical in order to achieve the desired
temperature reduction.
z
The cross section shape of the gallery should be designed to achieve sufficient oil movement to
maximize cooling efficiency.
ED7OM007
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