1.2.2 OMEGA combustion bowl
The OMEGA combustion bowl is a unit designed to
perform high efficiency, low emission combustion. As
the rim around the combustion bowl port of the upper
of the piston has been machined in a smaller size than
the interior of the combustion bowl, strong swirl is
produced in the combustion bowl and strong squish
flow makes the fuel be mixed more sufficiently with air.
Due to the application of OMEGA combustion system
and optimal utilization of intake and exhaust port
configuration within the cylinder head, the DE08TIS
diesel engines discharge very low level of hazardous
exhaust gases such as smoke, nitrogen oxide,
hydrocarbon, or carbon monoxide and thus ensure
high performance and low fuel consumption.
1.2.3. Oil gallery cooling type piston (DE08TIS)
Oil gallery cooling is used for the piston of DE08TIS
diesel engine.
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.
The cross section shape of the gallery should be
designed to achieve sufficient oil movement to
maximize cooling efficiency.
5ton Diesel Engine SPC000006
Page 5
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