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