Products - ISL G Cummins Westport Homepage
Cummins Westport Asia
Meets U.S.A. EPA and CARB 2010 emissions standards today

The ISL G engine replaces the L Gas Plus and C Gas Plus engines in North American markets.

For information on tax incentives like the Highway and Energy Bill, please visit our Incentives page.


FEATURES
  • Stoichiometric Cooled Exhaust Gas Recirculation (EGR) – Uses high EGR rates in combustion process in place of excess air (Lean Burn). Creates an oxygen free exhaust allowing for the use of a three way catalyst.
  • Cummins Cooled EGR – lowers in cylinder temperature and reduces oxygen concentration.
  • New Electronic Control Module – provides full monitoring and control of engine sensors, fuel system and ignition system.
  • Three Way Catalyst – simple passive device, highly effective hydrocarbon, CO, and NOx control.
  • Low installed weight – highest power to weight ratio in its class.
  • Meets EPA and CARB 2010 emissions standards
  • Will meet EEV in 2008.
BENEFITS
  • Improved fuel efficiency with Stoichiometric EGR combustion.
  • Improved clutch engagement torque.
  • LNG or CNG capable.
    (Cummins Westport engines can accept a wide range of natural gas fuel compositions. Use our Fuel Performance Specification Calculator to ensure compatibility.)
  • No exhaust system related maintenance costs.





download
ISL G Brochure

(692 kb)

download
"A new alternative. A natural choice." brochure

(4 MB)

get Adobe Acrobat
 
SPECIFICATIONS

Advertised Horsepower 250 – 320 hp 186 – 239 kW
Peak Torque 660 – 1,000 lb-ft 895 – 1,356 N•m
Governed Speed 2,100 – 2,200 rpm
Clutch Engagement Torque 550 lb-ft 746 N•m
Type 4-cycle, spark-ignited, inline 6-cylinder, turbocharged, CAC
Engine Displacement 540 cu. in. 8.9 L
NOx Emissions 0.2 gm/bhp-hr
PM Emissions 0.01 gm/bhp-hr
Aftertreatment Three-Way Catalyst (passive)
Net Weight 1,500 lbs 680 kg
Fuel Type CNG/LNG
Methane number 75 or greater

RATINGS

Model Advertised HP
HP (kW)
Peak Torque
lb-ft (N·m)
ISL G 320 320 (239) @ 2,000 RPM 1,000 (1,356) @ 1,300 RPM
ISL G 300 300 (224) @ 2,100 RPM 860 (1,166) @ 1,300 RPM
ISL G 280 280 (209) @ 2,000 RPM 900 (1,220) @ 1,300 RPM
ISL G 260 260 (194) @ 2,200 RPM 660 (895) @ 1,300 RPM
ISL G 250 250 (186) @ 2,200 RPM 730 (990) @ 1,300 RPM

MAINTENANCE INTERVALS

  Miles (Kilometers) Hours Months
Oil and Filter 7,500 (12,000) 500 6
Fuel Filter 15,000 (24,000) 1,000 12
Coolant Filter 7,500 (12,000) 500 6
Spark Plugs 22,500 (36,000) 1,500 18
Change Coolant 30,000 (48,000) 2,000 24
Valve Adjustment 30,000 (48,000) 2,000 24