L9N (2018)

Power 250 - 320 hp
186 - 239 kW
Torque 660 - 1000 lb-ft
895 - 1356 N•m
Certification EPA 2018

Overview:

The 2018 L9N continues the evolution of emissions-leading natural gas engines from Cummins Westport. Certified to the California Air Resources Board and Environmental Protection Agency's (EPA) Optional Low NOx emissions standard of 0.02 g/bhp-hr, it has 90% fewer NOx emissions than the current North American EPA standard. Offering 320 hp / 1,000 lb-ft torque, with improved performance and reliability, the near-zero emissions L9N is a great fit for transit, refuse, and truck applications.

Cost Effective Emission Reduction

  • Reduces smog forming NOx emissions by 90% vs. EPA NOx Standard
  • Can operate with 100% CNG, LNG, or renewable natural gas (RNG)
  • Significant GHG reductions with the use of RNG. Learn more with Cummins Westport GHG Emissions Calculator.
  • Natural gas is the lowest carbon fuel available, with abundant domestic supply and stable pricing
  • Fueling infrastructure in place and growing
  • No infrastructure changes are required for current natural gas fleets
Nox emission 0.02 g/bhp-hr. (90% below EPA)
Maximum Horsepower 320 HP (239 kW)
Peak Torque 1,000 LB FT (1,356 Nm)
Governed Speed 2200 RPM
Type 4-cycle, spark-ignited, in-line
6 clylinder, turbocharged, CAC
Engine Displacement 540 CU IN (8.9 Liters)
Number of Cylinders 6
Operating Cycles 4
Net Weight (dry) 1,625 LB (737 KG)
Fuel Type CNG/LNG/Biomethane
Aftertreatment Three-Way Catalyst
Base Warranty 2 Years, 250,000 Miles (402,336 KM) Truck
2 Years, Unlimited Miles Transit/Shuttle
  • Builds on all the latest improvements of the ISL G engine, with improved reliability and durability
  • New electronic engine, ignition, and On-Board Diagnostics (OBD) emission control features.
  • New engine control module – ECM model number CM2380.
  • Closed Crankcase Ventilation system for more complete combustion and lower emissions.

L9N Truck <66,000 lbs (29,937 kg) GCVW

Maintenance Item^ Hours Distance Months
Oil and Filter* 500 15,000 mi (24,000 km) 6
Coolant Filter 500 15,000 mi (24,000 km) 6
Fuel Filter 1,000 30,000 mi (48,000 km) 9
Spark Plugs 1,500 45,000 mi (72,000 km) 12
Closed Crankcase Ventilation Filter 2,000 60,000 mi (96,000 km) 18
Cooling System Flush 2,000 60,000 mi (96,000 km 18
Overhead Set Adjustment** 2,000 60,000 mi (96,000 km 18
Ignition Coil Extension 10,000 300,000 mi (480,000 km) 5 yrs
Air Cleaner / element Follow manufacturer's published recommendations

Consult your Owners or Operation and Maintenance manual for the complete daily and routine maintenance schedule
^Based on a duty cycle of 30 mph / 48 kph average speed.  Distance intervals may decrease based on average speed
*Requires Natural Gas Engine Oil
**Initial overhead set adjustment at 1,000 hours

L9N Urban Transit and Refuse Truck

Maintenance Item^ Hours Distance Months
Oil and Filter* 500 7,500 mi (12,000 km) 6
Coolant Filter 500 7,500 mi (12,000 km) 6
Fuel Filter 1,000 15,000 mi (24,000 km) 9
Spark Plugs 1,500 22,500 mi (36,000 km) 12
Closed Crankcase Ventilation Filter 2,000 30,000 mi (48,000 km) 18
Cooling System Flush 2,000 30,000 mi (48,000 km 18
Overhead Set Adjustment** 2,000 30,000 mi (48,000 km 18
Ignition Coil Extension 10,000 150,000 mi (240,000 km) 5 yrs
Air Cleaner / element Follow manufacturer's published recommendations

Consult your Owners or Operation and Maintenance manual for the complete daily and routine maintenance schedule
^Based on a duty cycle of 15 mph / 24 kph average speed.  Distance intervals may decrease based on average speed
*Requires Natural Gas Engine Oil
**Initial overhead set adjustment at 1,000 hours

 



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