2.2. Engine Type
The Engines DE12T, DE12TI, DE12TIA, DE12TIS are in-line vertical water-cooled 6-cylinder
four-stroke diesel engines with direct injection. DE12T is turbo-charged engine, and DE12TI,
DE12TIA, DE12TIS model is turbo-charged and inter-cooled engine.
2.2.1. OMEGA combustion bowl
The OMEGA combustion bowl is a
unit designed to perform high efficien-
cy, 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 uti-
lization of intake and exhaust port
configuration within the cylinder head,
the DE12 series diesel engines dis-
charge very low level of hazardous
exhaust gases such as smoke, nitro-
gen oxide, hydrocarbon, or carbon
monoxide and thus ensure high per-
formance and low fuel consumption.
2.2.2. Cylinder block
The cylinder block is a single piece of alloy cast iron. To increase its stiffness, it is extended to
a level below the crankshaft center line.The engine has replaceable dry cylinder liners and indi-
vidual cylinder heads with struck-in valve seat rings and replaceable valve guides,
2.2.3. Piston con-rod / crankshaft
The forged crankshaft is a ingrate type (Counterweight is integrated with crank shaft body).
Radial oil seal on crankshaft and flywheel are provided to seal the flywheel housing inside
penetrations.
The con-rods (connecting rods) are die-forged, diagonally split and can be removed through
the top of the cylinders together with the pistons. Crankshaft and connecting rods run in steel-
backed lead bronze ready-to fit type bearings.
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TECHNICAL INFORMATION
EA8M1001
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