Features; General Description Of Engine Construction; Crankcase - Robin America DY30 Service Manual

LIGWWEIGWTand COMPACT
1 . Lightweight because of aluminum alloy being used for various parts including the crankcase made of aluminum die casting
2. Compact in outside dimensions because-
a) the camshaft is assembled inside of the gear case cover, and accordingly total width of the engine is reduced,
b) the cooling fan and the flywheel are single piece die casting; and the cooling fan is set on the side of the case
so
that it
may breathe in cooling air from the front, which means that the size of the fan casing becomes smaller and total
length
of the engine is also reduced.
FUEL ECONOMY
and
NOISELESS TYPE ENGINE
Low fuel consumption owing to improved fuel combustion system having adopted direct fuel injection; and noiseless
opera-
tion owing to the highly effective muffler and air cleaner
As an optional part a balancer is available for minimizing vibration.
EASY
to
TAKE-OUT POWER
A faucet joint is set in the blower housing, which enables direct coupling with a machine. P.T.O. shaft is connected to the
flywheel and accordingly
this engine is
very easy to handle. Furthermore, as cooling air is taken into from the front of case
(reverse side of the machine coupled), it is unnecessary
to
arrange air-intake
on
the side of the machine. Therefore, it is easy
to couple a machme
to
the engine.
4. GENERAL DESCRIPTION of ENGlME CONSTRUCTION
This engine is a Forced Air Cooled, 4-Cycle, Vertical, Single Cylinder, Overhead Valve Diesel Engine, and the combustion
system is direct injection type.
4 - 1 CRANKCASE
The crankcase is made of a one-piece aluminum alloy die
casting. On the side of pump, bearing is press-fitted; and on
the fan side cast iron bearing housing is arranged, and it sup-
ports the crankshaft by a ball bearing press-fitted to the
shaft. Also, on the fan side, blower housing of aluminum
die casting is fitted. This blower housing has a faucet joint
and it enables direct coupling with a machine. (See Fig. 1
.>
1
I
I .
Fig. 1
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