1. General
2
1.2 Specifications
Official engine model name
unit
3YM30
3YM20
Company internal model name
-
3YM30 3YM30C
3YM20 3YM20C
Marine gear model
-
KM2P-1
SD20
KM2P-1
SD20
Use
-
Pleasure use
Type
-
Vertical water cooled 4 cycle diesel engine
Combustion system
-
Indirect injection
Air charging
-
Naturally aspirated
Number of cylinders
-
3
Bore x stroke
mm(inch)
76 x 82 (2.99 x 3.23)
70 x 74 (2.76 x 2.91)
Displacement L
1.115
0.854
Continuous
power
Output at
crankshaft /
Engine speed
kW(HP)/
min
-1
20.1(27.3) / 3489
(at Fuel temp. 25°C) *
14.7(20.0) / 3489
(at Fuel temp. 25°C) *
Fuel stop
power
Output at
crankshaft /
Engine speed
kW(HP)/
min
-1
22.1(30) / 3600
(at Fuel temp. 25°C) *
21.3(29.0) / 3600
(at Fuel temp. 40°C) **
16.2(22) / 3600
(at Fuel temp. 25°C) *
15.3(20.8) / 3600
(at Fuel temp. 40°C) **
Output at
propeller shaft /
Engine speed
kW(HP)/
min
-1
21.4(29.1) / 3600
(at Fuel temp. 25°C) *
20.7(28.1) / 3600
(at Fuel temp. 40°C) **
15.7(21.3) / 3600
(at Fuel temp. 25°C) *
14.9(20.2) / 3600
(at Fuel temp. 40°C) **
Installation -
Flexible
mounting
Fuel injection timing
deg b.T.D.C.
FID 16±1 (FIC-Air : 18±1)
FID 22±1 (FIC-Air : 24±1)
Fuel injection opening
pressure
MPa
(kgf/cm
2
)
11.8
+0.98
/
-0
(120
+10
/
-0
)
12.3
+0.98
/
-0
(125
+10
/
-0
)
Main power take off
-
At Flywheel side
Direction of
rotation
Crankshaft
-
Counter-clockwise viewed from stern
Propeller shaft
(Ahead)
-
Clockwise viewed from stern
Cooling system
-
Fresh water cooling with heat exchanger
Lubrication system
-
Complete enclosed forced lubrication
Cooling water capacity
(fresh water)
L(quart)
Engine:4.9 (5.2),
Coolant recovery tank : 0.8 (0.8)
Engine:4.1 (4.3),
Coolant recovery tank : 0.8 (0.8)
Lubricating
oil capacity
(engine)
Rake angle
deg.
at rake angle 8 deg at rake angle 0 deg at rake angle 8 deg at rake angle 0 deg
Total (Note 4)
L(quart)
2.8
0
/
-0.2
(3.0
0
/
-0.2
)
2.5
0
/
-0.2
(2.6
0
/
-0.2
)
2.7
0
/
-0.2
(2.9
0
/
-0.2
)
2.4
0
/
-0.2
(2.5
0
/
-0.2
)
Effective (Note 5)
1.4 (1.5)
1.5 (1.6)
1.4 (1.5)
1.5 (1.6)
Starting
system
Type -
Electric
Starting motor
V-kW
DC 12V-1.4 kW
AC generator
V-A
12V-60A (12V-80A optional)
Engine
Dimension
Overall length
mm(inch)
715 (28.1)
715 (28.1)
698 (27.5)
698 (27.5)
Overall width
463 (18.2)
463 (18.2)
463 (18.2)
463 (18.2)
Overall height
545 (21.5)
545 (21.5)
528 (20.8)
528 (20.8)
Engine dry mass
(include marine gear)
kg
133
157 (with SD20)
120
144 (with SD20)
Summary of Contents for 3YM20
Page 1: ...M9961 03E100 ...
