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BUKH U125

125ps (92kW) ace. to ISO 8665

 

 

The U-engine family brings to boating the additional benefits of diesel power which, in the past, were limited to use gasoline engines.

In features a compact rail electronic fuel injection (CRDi) with the latest generation computer controlled engine management system.

A variable geometry turbocharger (VGT) coupled with the intercooler provides a superb acceleration as well as optimal boost at cruise – all while keeping fuel consumption under tight control. Available for inboard and jet applications, wheater the needs is for new builds for repower, the U125 is ready to serve.

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Bukh_125-Is

DrawingDatasheet (pdf)

pdfOwners Handbook

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Marine Gear

Model ZF 45 C for U125J:
Gear Ratio 1:1
Weight [kg] 31

 

Specifications

Engine rotation (looking forward) Anti-clockwise
Propeller rotation (looking forward) Anti-clockwise
Number of cylinders 4
Net weight 220
Compression ratio 17.3:1
Engine type U125J
Engine crankcase vent syst Closed
Engine duty rating Pleasure & Light Commercial 4-Stroke, 4-Valve VGT with intercooler, fresh water cooling
rom@full load 4000
Displacement [cc] 1582
At speed [rpm] 3700
Injection system Common Rall Direct Injection CRDi -Solenoid injector
Electronic engine diagnostic YES
Max. Fuel consumption [L/h] 27
Propulsion system Shaftdrive / Waterjet

 

Standard equipment

Material

  • Cast iron engine cylinder block
  • Aluminium head
  • Oil cooled piston
  • In line 4, 16-valve DOHC
  • Hydraulic lash adjusters
  • Integrated water jacket
  • Hydraulic timing chain auto tensioner
  • SIngle serpentine belt system
  • Drive belt auto tensioner

Engine Mounting

  • Adjustable engine mount

Lubrication System

  • Electric oil extraction pump
  • Crankcase gases vented into air inlet

Fuel System

  • Common rail direct injection (CRDi)-Solenoid injector
  • Fuel filter with sensor detecting water in fuel
  • Dual pressure control valve

Electrical System

  • 12 volt system and 130A alternator
  • Auxiliary engine stop button
  • Ceramic glow plugs for trouble-free cold start
  • NMEA2000 Converter (Optional)
  • Electronic control system (Optional)

Cooling System

  • Seawater cooled intercooler, heat exchanger
  • Corrosion resistant material for the seawater circuit

Engine Operating Indicator (EOI)

  • Engine self protection and diagnosis
  • Display CAN information
  • Display engine diagnostic error code
  • Audible alarm and control lamps

Air inlet System

  • Reusable air filter
  • Crankcase gases vented into the air inlet

Exhaust System

  • Engine coolant cooled exhaust manifold
  • Seawater cooled exhaust elbow

Turbocharger

  • Variable Geometry Turbine (VGT)

Engine Coupler

  • Life-Iong and rattle free rubber roller coupler for sterndrive

Emissions

  • EPA Tier 3, BSO and RCD compliant

Pass-by Noise Level

  • 67.0dB (RCD Standard 75dB)