Principal Engine Specifications - Yanmar BY Series Service Manual

Principal Engine Specifications

PRINCIPAL ENGINE SPECIFICATIONS
Engine Model
Application Design
Number of Cylinders
Type
Combustion System
Aspiration
Bore x Stroke
Displacement
Firing Order*
Compression Ratio
Rated Power Output**
kW (metric hp) at 4000
rpm
Mean Pressure
Torque
High Idle Speed
Low Idle Speed (Warm
Engine @ 88°C [190°F])
Cold Start Speed
@ 20°C (68°F)
Rev Limit (fuel cut-off)
Prop rpm @ Wide Open
Throttle
Rotation Direction
No. of Valves per Cylinder
Valve Adjustment
Turbocharger
Charge Air Cooler
Electrical System
Starter
Charging System
Battery Capacity -
Recommended
Fuel Injection System
Fuel Injection Pressure
Injection Timing
ECU Threshold Voltage
Maximum Allowable Exhaust
Backpressure
Cooling System
BY Service Manual
4BY150 / 150Z
Models numbers with no suffix letter are used in marine gear applications.
Models having a "Z" suffix are used with stern drive.
In-line 4
15° inclined, water-cooled, dual overhead camshaft, 4-stroke diesel
1.995 L (122 cu in.)
1-3-4-2
16.5:1
4BY150 / 4BY150Z 4BY180 / 4BY180Z
110 kW (150 hp) 132 kW (180 hp)
1.66 MPa (240.76 psi) 1.99 MPa (288.63 psi) 1.62 MPa (234.96 psi) 1.92 MPa (278.47 psi)
317 N·m (234 ft-lb) 355 N·m (262 ft-lb)
750 rpm (ECU-controlled)
1200 rpm gradually decreasing to warm engine idle @ 88°C (190°F) (ECU-controlled)
4600 rpm (ECU-controlled)
Counterclockwise (viewed from flywheel)
MHI with pneumatic wastegate
Variable depending on rpm; 250 - 1600 bar (3626 - 23,206 psi)
1835 mmAq
(72.3 in.Aq)
Closed cooling system with seawater heat exchanger
GENERAL SERVICE INFORMATION
4BY180 / 180Z 6BY220 / 220Z
Direct injection
Turbocharged with charge air cooler
84 mm x 90 mm (3.307 in. x 3.543 in.)
6BY220 / 6BY220Z
162 kW (220 hp)
487 N·m (359 ft-lb)
4600 rpm
4000 - 4100 rpm
4
Hydraulic self-adjusting
HOLSET with pneumatic wastegate
Seawater cooled
12 V
12 V / 2 kW (2.7 hp)
12 V / 150 A
12 V / 74 Ah / 680 CCA
Common rail (ECU-controlled)
Variable (ECU-controlled)
7.8 V
6BY260 / 260Z
In-line 6
2.994 L (183 cu in.)
1-5-3-6-2-4
16.5:1
6BY260 / 6BY260Z
191 kW (260 hp)
545 N·m (402 ft-lb)
670 rpm (ECU-controlled)
4600 rpm (ECU-controlled)
2039 mmAq
(80.3 in.Aq)
3-17