EPA 28


The BUKH BETA Lifeboat Diesel Engines set new standards for low exhaust emissions and contribute to the reduction of marine environmental pollution.

They comply with the Tier standards which have been made technically possible through the incorpo- ration of pre-combustions chambe injection instead of common rail / unit injection. This eliminates the need for vulnerable electronic devices for control of fuel volumes and improves the operational reliability. This design allowed the engines to pass and obtain the US Coast Guard approval for use as lifeboat engines.

Further to these features, the BUKH BETA series demonstrates outstanding qualities when it comes to the relationship between weight and power.


Max continuous rating (ISO3046) at   28 HP (20.6 kW)
at RPM   3600
Reverse-reduction gear ratio (standard)   3:1
Engine rotation (looking forward)   Anti-clockwise
Propeller rotation (looking forward)   Clockwise
Number of cylinders   3
Bore and stroke   78.0 x 78.4 mm (3.07 x 3.09 in)
Swept volume   1123 cm3 (68.53 cu in)
Cycle   4-stroke
Cooling system (standard)   Keel-cooling
Inclination, max. fore   30o
Heel, max, continuous   25o
Fuel consumption, full load   5.5 l/h (1.21 galls/h)
Air consumption   1656 l/min
Exhaust temperature   500oC
Electric starter motor   12V (1.2 kW)
Charging alternator   14V, 50 Amp, 700W
Net weight, incl. gearbox   165 kg (364 lbs)
Installation drawing No.   009M8101

Standard Equipment

  • Reverse-reduction gear
  • Wet sump lubrication system
  • Pre and main (full flow) filter
  • Keel-cooling with thermostat
  • Air inlet filter
  • Fuel lift pump
  • Electric start
  • Charging alternator with double diode
  • Operating remote panel with
    • Charging light
    • Luboil pressure warning light
    • Cooling water temperature warning light
    • Push button for start and stop
    • Audible warning
  • Fittings for remote control
  • Drain pump for luboil
  • Dry exhaust fitting
  • Up-side-down valve
  • Standard set of tools
  • Operating manual
  • Watercooled exhaust manifold
  • Fittings for keel cooling
  • Centrifugal governor
  • Instrument panel with gauges
    • Tachometer
    • Temperature
    • Oil pressure
  • Spraypump for fireprotected lifeboats that can stand dry-running.
  • Battery switch
  • Remote control
  • 3 blade propeller
  • Propeller shaft
  • Sterntube
  • Front sealing arrangement for sterntube
  • Rear sterntube bearing
  • Propeller shaft coupling