b4.5

B4.5L for Marine

Power 102 - 250 hp
76 - 186 kW
Certification Stage V, IMO Tier II, EPA Tier 3

Applications

Marine Auxiliary Engines Marine Propulsion Engines

Available Regions

US and Canada,  Russia,  Africa & Middle East,  Mexico,  Philippines,  Singapore,  Brazil,  Bolivia,  Uruguay,  Paraguay,  Argentina,  Colombia,  Europe,  Central America,  Korea,  Japan

Overview:

  • It is an in-line 4-cylinder, 16-valve, 4-stroke 4.5-liter diesel engine
  • Available for commercial and recreational propulsion applications
  • Based on the proven Cummins B4.5L industrial engine
  • The B4.5L complies with U.S. EPA Tier 3 emissions regulations without the use of aftertreatment
  • Backed by Cummins warranty
Configuration In-line, 4 cylinder, 4-stroke diesel
Aspiration Turbocharged/ Aftercooled
Displacement 4.5L (272 in3)
Bore & Stroke 107 X 124 mm (4.21 x 4.88 in)
Fuel System High Pressure Common Rail (HPCR)

 

B4.5L dimensions

Width: 861.8 mm & 33.93 inches
Length: 1112.1 mm & 43.79 inches
Height: 877mm & 34.53 inches
Weight: 545kg & 1202 lbs.

Marine propulsion

Commercial ratings

  kW BHP RPM Rated
L/hr
(Gal/hr)
ISO Avg
L/hr
(Gal/hr)
IMO EPA EU
Heavy duty 112 150 2500 31.8 (8.4) 21.3 (5.6) - 3 5
Intermittent 172 230 2600 46.7 (12.3) 32.0 (8.5) 2 3 -
Light duty 186 250 2600 TBD TBD 2 3 -

Recreational ratings

  kW BHP RPM Rated
L/hr
(Gal/hr)
ISO Avg
L/hr
(Gal/hr)
IMO EPA EU
High output 172 230 2600 46.7 (12.3) 32.0 (8.5) 2 3 -
186 250 2600 TBD TBD 2 3 -

 

Marine auxiliary

Commercial ratings

  kW BHP RPM Rated
L/hr
(Gal/hr)
ISO Avg
L/hr
(Gal/hr)
IMO EPA EU
Prime power at 50 Hz 91 122 1500 24.6 (6.5) 12.2 (3.2) - - 5
112 150 1500 29.9 (7.9) 14.7 (3.9) - - 5
Prime power at 60 Hz 76 102 1800 21.9 (5.8) 11.1 (2.9) - 3 -
91 122 1800 26.9 (7.1) 12.9 (3.4) - 3 -
112 150 1800 29.9 (7.9) 14.7 (3.9) - 3 -
129 173 1800 33.7 (8.9) 16.7 (4.4) - 3 -
  • Engine Design: The B4.5L is an in-line, 4-cylinder,16-valve cylinder head, 4-stroke diesel engine, with a robust rebuildable engine block designed for continuous operation. Industry leading engine torque provides excellent vessel acceleration, control and maneuverability.
  • Fuel System: High Pressure Common Rail (HPCR) optimized for best-in-class fuel consumption lowering operating costs. Fuel Pump and Fuel Injectors are designed to operate with alternative fuels such as JP5, JP8 and biodiesel. Electric transfer fuel pump enabling a quick engine start. Includes primary and secondary filters with 10 and 5 microns respectively to provide better protection for the fuel pump and injectors.
  • Cooling system: Single loop with low temperature aftercooler intended for keel cooled (KC) or heat exchanger (HX). The simplicity of the cooling system eliminates the need for a more complex two-loop system, while meeting emissions requirements. For KC applications, the coolant flow and temperature has been optimized to reduce the size of the keel cooler equipped with customer connections. For HX applications, the tube and shell heat exchanger is designed for superior durability and ease of service with minimal maintenance requirements. The coolant expansion tank can be integrated with the heat exchanger which is a package feature.  It also features a dry-run seawater pump to allow running the engine out of the water for a limited period of time.
  • Exhaust System: Has a cast water cooled exhaust manifold for lower surface temperatures improving overall performance. The B4.5L is offered with either dry or wet exhaust elbows.
  • Air System: Includes commercial and recreational reusable and washable air cleaners providing overall cost savings.
  • Mounting System: Includes engine mounts and vibration isolators providing a quieter work environment.
  • Electrical System: Offered with 12V and 24V with simple electrical OEM interface connections integral with C Command Systems. A remote backup throttle options is also available for easier integration for vessels.
  • Electronics: ECM integrates start/stop controls, fuel tank level monitoring for easier integration with the vessel. Also features engine protection and de-rates for optimum safety.
  • Certifications: Complies with US EPA TIER3 emissions regulations without use of aftertreatment. Designed to meet the International Association of Classification Societies (IACS), SOLAS and USCG requirements.

Optional Equipment:

  • C Command Connect
  • Front Power Take Off
  • SAE A Pad Accessory drive
  • Marine Gear Oil Cooler


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