Yanmar 3YM20, Operation Manual

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2. PRODUCT EXPLANATION
EN
Note: Fuel condition: Density at 15 ºC = 0.842
Rating condition ISO 3046-1, at fuel temp. 25°C ; ISO 3046-1, at fuel temp. 40°C inlet; ISO 8665. At FO
pump inlet.
Engine Model unit 3YM20 3YM30
Marine gear model - KM2P-1 SD-20 KM2P-1 SD-20
Use - Pleasure use Pleasure use
Type - Vertical water-cooled 4-cycle diesel
engine
Vertical water-cooled 4-cycle diesel
engine
Combustion system - Swirl pre-combustion chamber Swirl pre-combustion chamber
Number of cylinders - 3 3
Bore x stroke mm(inch) 70x74(2.76x2.91) 76x82(2.99x3.23)
Displacement L 1.115 1.115
Continu-
ous
power Output at
crankshaft/
Engine speed kW(hp)/
min-
1[1]
14.7(20.0)/3489(at Fuel temp. 25°C)
[2]
20.1(27.3)/3489(at Fuel temp. 25°C) [2]
Fuel stop
power Output at
crankshaft/
Engine speed kW(hp)/
min
-1
[1]
16.2(22.0)/3600(at Fuel temp. 25°C) [2]
/15.3(20.8)/3600(at Fuel temp. 40°C) [2]
22.1(30.0)/3600(at Fuel temp. 25°C) [2]
/21.3(29.0)/3600(at Fuel temp. 40°C) [2]
Output at pro-
peller/Engine
speed kW(hp)/
min
-1
[1]
15.7(21.3)/3600(at
Fuel temp. 25°C) [2]
/14.9(20.2)/3600(at
Fuel temp. 40°C) [2]
- 21.4(29.1)/3600(at
Fuel temp. 25°C) [2]
/20.7(28.1)/3600(at
Fuel temp. 40°C) [2]
-
Installation - Flexible mounting Flexible mounting
Fuel injection opening pres-
sure MPa 12.3+0.98-0 12.3+0.98-0
Direction
of rotation Crankshaft - Counter-clockwise viewed from stern Counter-clockwise viewed from stern
Propeller shaft
(Ahead) - Clockwise viewed
from stern
- Clockwise viewed
from stern
-
Cooling system - Fresh water-cooling with heat
exchanger
Fresh water-cooling with heat
exchanger
Lubrication system - Complete enclosed forced lubrication Complete enclosed forced lubrication
Cooling water capacity
(fresh) L(quart) Engine 4.5 (4.8), Coolant recovery tank:
0.8(0.8)
Engine 4.9(5.2), Coolant recovery tank:
0.8(0.8)
Lubricat-
ing oil
capacity
(engine) Rake angle °(deg) at rake angle 8° at rake angle 0° at rake angle 8° at rake angle 0°
Total
[3]
L(quart) 2.7(2.85) 2.4(2.5) 2.8(3.0) 2.5(2.6)
Effective
[4] 1.4(1.5) 1.5(1.6) 1.4(1.5) 1.5(1.6)
Starting
system Type - Electric Electric
Starting motor V-kW DC 12V - 1.4 kW DC 12V - 1.4 kW
AC generator V-A 12V - 60A (12V - 80A optional) 12V - 60A (12V - 80A optional)
Engine
dimen-
sion Overall length mm(inch) 693(27.3) - 715(28.1) -
Overall width 463(18.2) 463(18.2)
Overall height 528(20.8) 545(21.5)
Engine dry mass (include
marine gear) kg 130 151(with SD20) 133 154(with SD20)
[1] hp = 0.7355 kW
[2] Fuel temperature at the inlet of the fuel injection pump.
[3] The "Total" oil quantity includes oil in oil pan, channels, coolers and filter.
[4] The effective amount of oil shows the difference in maximum scale of the dipstick and minimum
scale.