The BUKH 4-cylinder D4-225 is developed from the latest design in modern diesel technology. The engine has common rail fuel injection sys-tem, double overhead camshafts, 4 valves per cylinder, turbocharger and aftercooler.

Together with a large swept volume and the EVC system (Electronic Vessel Control), this results in world-class diesel performance.

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ENGINE BLOCK AND HEAD• Cast iron cylinder block and cylinder head• Combined ladder frame and balance shaft• 4 valve technology with hydraulic lash adjusters• Double overhead camshafts• Oil cooled pistons with two compression rings and

one oil scraper ring• Integrated cylinder liners• Replaceable valve seats• Five bearing crankshaft• Rear-end transmission

ENGINE MOUNTING• Flexible engine mounting LUBRICATION SYSTEM• Easily replaceable separate full-flow and by-pass

oil filter• Seawater cooled tubular oil cooler

FUEL SYSTEM• Common rail fuel injection system• Control unit for processing the injection• Fine filter with water separator and alarm

AIR INLET AND EXHAUST SYSTEM• Air filter with replaceable insert• Crankcase gases vented into the air inlet• Exhaust elbow or exhaust riser• Freshwater cooled turbocharger• Loss of sea water alarm

COOLING SYSTEM• Thermostatically regulated freshwater cooling• Tubular heat exchanger with separate large volume

expansion tank • Coolant system prepared for hot water outlet• Easily accessible seawater impeller pump ELECTRICAL SYSTEM• 12V or 24V two-pole electrical system• 14V/115A marine alternator with Zener-diodes to

protect the system from peak voltage, and integrated charging regulator with battery sensor cable for maxi-mum use of alternator

• Fuses with automatic reset • Auxiliary stop button

INSTRUMENTS/CONTROLS• Complete instrumentation/display packages, including

e-key • Electronic shift and throttle available as extras • Plug-in connections

TECHNICAL DESCRIPTION:

BUKH SOLAS MARINE DIESEL ENGINE225 HP (165 KW) Ph

oto:

Nor

safe

Mag

num

750

resc

ue b

oat

D4-225

374[14,74]

146[5,8]

146[5,8]

399[15,7]

(83

±8

)[3

,3±0

,3]

286 286[11,3][11,3]

260

[10,

2]

374[14,74]

146[5,8]

146[5,8]

399[15,7]

(83

±8

)[3

,3±0

,3]

286 286[11,3][11,3]

260

[10,

2]

D4-225

www.bukh.dk - © 2016 BUKH. All rights reserved. 009U54212-R01SOLAS approved by Det Norske Veritas

Notified Body: No. 0575

BUKH SOLAS MARINE DIESEL ENGINE

mygind-co.dkD4-225 Specifications

Engine type D4

Engine duty rating C9 - Special Light Duty Commercial_4

Crankshaft power [hp(kW)] 225 (165)

Rpm@full load 3500

Cylinders In-line 4

Displacement [L] 3,7

Bore [mm] 103

Stroke [mm] 110

Compression ratio 17.5:1

Injection system Common Rail fuel injection system

Alternator [V -A] 14V - 115A

Electronic engine diagnostic YES

Max. Fuel consumption [L/h] 45,9

Dry Weight Bobtail [kg] 482

Propulsion system Shaft Drive / Waterjet

D4-225 DimensionsNot for installation

As BUKH is always endeavouring to improve the engines, specifications mentioned are subject to alterations without previous notice.

374[14,74]

146[5,8]

146[5,8]

399[15,7]

(83

±8

)[3

,3±0

,3]

286 286[11,3][11,3]

260

[10,

2]

374[14.7]

146[5,8]

146[5,8]

380[15.0]

[3,3

±0,3

](8

3 ±

8)

286 286[11,3][11,3]

260

[10,

2]

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400

Fuel consumptionAt calculated propeller load exp. 2.5

0 0

0011

0022

0033

0044

0

0055

5

10

US ga l/hLi ters/h

Rpm

Power

1600 1800 2000 2200 2400 2600 2800 3000 3200 34000 0

5522

0055

5577

0101 0 0

2121 5 5

5151 0 0

7171 5 5

0

0202 0 0

50

100

150

200

250

hp, m etrickW

Rpm

Crankshaft powerCalculated propeller load exp. 2.5

Torque

1600 1800 2000 2200

Torque measured at crankshaft

2400 2600 2800 3000 3200 34000303 0 0

5353 0 0

0404 0 0

5454 0 0

0505 0 0

5555 0 0

30

35

40

45

50

Nm55

kpm

Rpm 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400

Fuel consumptionAt calculated propeller load exp. 2.5

0 0

0011

0022

0033

0044

0

0055

5

10

US ga l/hLi ters/h

Rpm

Power

1600 1800 2000 2200 2400 2600 2800 3000 3200 34000 0

5522

0055

5577

0101 0 0

2121 5 5

5151 0 0

7171 5 5

0

0202 0 0

50

100

150

200

250

hp, m etrickW

Rpm

Crankshaft powerCalculated propeller load exp. 2.5

Torque

1600 1800 2000 2200

Torque measured at crankshaft

2400 2600 2800 3000 3200 34000303 0 0

5353 0 0

0404 0 0

5454 0 0

0505 0 0

5555 0 0

30

35

40

45

50

Nm55

kpm

Rpm

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400

Fuel consumptionAt calculated propeller load exp. 2.5

0 0

0011

0022

0033

0044

0

0055

5

10

US ga l/hLi ters/h

Rpm

Power

1600 1800 2000 2200 2400 2600 2800 3000 3200 34000 0

5522

0055

5577

0101 0 0

2121 5 5

5151 0 0

7171 5 5

0

0202 0 0

50

100

150

200

250

hp, m etrickW

Rpm

Crankshaft powerCalculated propeller load exp. 2.5

Torque

1600 1800 2000 2200

Torque measured at crankshaft

2400 2600 2800 3000 3200 34000303 0 0

5353 0 0

0404 0 0

5454 0 0

0505 0 0

5555 0 0

30

35

40

45

50

Nm55

kpm

Rpm