Cummins B5.9CMII122 121hp Marine Propulsion Engine

Cummins B5.9CMII122 121hp Marine Propulsion Engine

CERTIFIED: This diesel engine complies with or is certified to the following agencies requirements:IMO Tier II (Two) NOx requirements of International Maritime Organization (IMO), MARPOL 73/78 Annex VI, Regulation 13 China Marine Emission Regulation Stage II GB15097-2016

Cummins B5.9CMII122 121hp Marine Propulsion Engine Performance Data

General Engine Data
Engine Model ……….………………………………………..………………………………B5.9CMII122
Rating Type …………………….……..……………………………………………………Continuous Duty
Rated Engine Power …….…..……………………………..…………..……….kW [hp] 90 [121]
Rated Engine Speed ………………..….……………..……………………….……rpm 1800
Rated Power Production Tolerance ……….…..…………………………………….±% 3
Rated Engine Torque …………………………..……….……………………….Nꞏm [lbꞏft] 478 [353]
Peak Engine Torque @ 1400 rpm………………………..…………………..Nꞏm [lbꞏft] 590 [435]
Brake Mean Effective Pressure ..……….……….….……………..….…..kPa [psi] 1022 [148]
Indicated Mean Effective Pressure……………..…..……….…..kPa [psi] 1200 [174]
Maximum Allowable Engine Speed …………………..…..……………rpm 2440
Maximum Continuous Torque Capacity from Front of Crank Specifications
Maximum Torque Capacity from Front of Crank² ..…..………….……………..Nꞏm [lbꞏft] [N.A.]
Compression Ratio ….…….………………………………………………… 17.3:1
Piston Speed ……………………………………….….……………..……..……..m/sec [ft/min] 7.2 [1417]
Firing Order ……..…………………….…………..………..….……………1-5-3-6-2-4
Weight – Engine Only – Average …….……..………………………..…..kg [lb] 543 [1197]
Weight – Engine With Heat Exchanger System – Average….…………..…..kg [lb] 641 [1413]
Governor Settings
Default Droop Value….…..Refer to MAB 2.04.00-03/23/2006 for Droop explanation 7%
Maximum Droop Allowed…………………………………………………………16%
High Speed Governor Break Point………………….………..………………..rpm 1860
Minimum Idle Speed Setting ……….…………….…………….….…..………rpm 750
Normal Idle Speed Variation .……………….…………… ……….……………±rpm 50
High Idle Speed Range Minimum ………………………………………..……rpm 1860
Maximum ………………………………..……rpm 2000
Noise and Vibration
1 m sound pressure level – GB/T1859 ……………………………………….. < 93 dB
Lubrication System¹
Max. Allowable Oil Temperature (Sump) ……………………………………°C [°F] 124 [255]
Oil Pan Capacity (OP9314)
Low/High………………………………………………………………….. l/l 12.3 14.2
Min. Oil Pressure at idle speed…………………………………….…..kPa [psi] 69 [10]
Maximum Operational Angularity of Oil Pan …………………………….. degree 40
Fuel System¹
Fuel Consumption at Rated Speed ………..……………………..…….….l/hr [gal/hr] 24 [6.4]
Approximate Fuel Flow to Pump ..…..…..…………..……………….l/hr [gal/hr] 63 [16.6]
Maximum Allowable Fuel Supply to Pump Temperature ..………………..……°C [°F] 80 [176]
Approximate Fuel Flow Return to Tank .….……..…..….…..…………..….l/hr [gal/hr] 20 [5.2]
Maximum Allowable Restriction to Fuel Pump
Clean Filter ……………………………………………………………….. kPa [psi] 16 [2.3]
Dirty Filter ……………………………………………………………. kPa [psi] 30 [4.4]

Air System¹
Intake Manifold Pressure ..….……..………………….………….kPa [in Hg] 124 [37]
Intake Air Flow .………..….………….…….………..………………..…l/sec [cfm] 133 [281]
Heat Rejection to Ambient5 ….…..………..……………………..kW [Btu/min] 17 [980]
Exhaust System¹
Exhaust Gas Flow …….……..………………………………………….l/sec [cfm] 326 [690]
Exhaust Gas Temperature (Turbine Out) …………………………°C [°F] 458 [856]
Max. Exhaust Pressure ………………….……….…………………….kPa [in Hg] 10 [3]
Emissions (in accordance with ISO 8178 Cycle E3)
NOx (Oxides of Nitrogen) …….……………………………………..g/kwꞏhr [g/hpꞏhr] 4.94 [3.68]
HC (Hydrocarbons) …….……………………………………..g/kwꞏhr [g/hpꞏhr] 0.36 [0.27]
CO (Carbon Monoxide) ……….…………..…………………g/kwꞏhr [g/hpꞏhr] 1.50 [1.12]
PM (Particulate Matter) …………………………………….g/kwꞏhr [g/hpꞏhr] 0.12 [0.09]
Cooling System¹
Sea Water Pump flow4 ( Discharge Restriction Pressure 40 kPa )………………… m3/hr 8.8
Pressure Cap Rating (With Heat Exchanger Option) …………..………….…..kPa [psi] 48 [7]
Max. Pressure Drop Across Any External Cooling System Circuit ………..…..kPa [psi] 34 [5]
Jacket Water Aftercooled Engine (JWAC)
Coolant Flow to Engine Heat Exchanger ………….…………..l/min [gal/min] 126 [33.2]
Standard Thermostat Operating Range (Start to Open) ……….……….……°C [°F] 71 [160]
Standard Thermostat Operating Range (Full Open) ……………….…….°C [°F] 83 [182]
Heat Rejection to Engine Coolant³ ………………………………………..kW [Btu/min] 53 [3020]
Coolant Capacity
Engine Only…………………………………………………………………………….l [gal] 9 [2.4]
Electrical and Start System
Voltage………………………………………………………………………………………..V 24
Cold Soak at -18°C (0°F) -Cold Cranking Amperes Rating ……………….CCA 600
Maximum Allowable Resistance of Starting Circuit ……… …………Ohms 2
Min. start temperature without cold starting aid ………………………°C [°F] -12 [-10]

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