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WELCOME TO OUR OEM NATURAL GAS VEHICLE DIRECTORY.

This directory is designed as a resource to assist fleet and vehicle owners to source OEM supported natural gas vehicles or engines by location or by vehicle type.Contributions and corrections are welcome via email to oem@iangv.org or via the 'Suggest a listing' links below (Please submit your entry from within the category you would like to list from). Listings are shown in good faith. IANGV takes no responsibility for any inaccuracies in this directory and welcomes corrections at any time.

Directory

Cummins Westport ISL G

More Information

http://www.cumminswestport.com/products/islg.php

Fuel types

• Compressed natural gas (CNG)
• Liquefied natural gas (LNG)

Manufacturer

Cummins Westport

Manufacture method

OEM ex factory

Horsepower

186 – 239 kW

Emissions Level

• EEV
• EPA CARB 2010

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The ISL G engine, introduced in 2007, was the first heavy duty engine to meet the US EPA and California Air Resources Board (CARB) 2010 NOx emission levels at 0.2 g/bhp-hr.

• 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

From LNG Landline Mar/Apr 2009: 250 to 320 hp, 660 to 1000 lbs.-ft. of torque. It’s a six-cylinder, four-stroke engine running on compressed or liquefied natural gas (CNG or LNG). Fuel is introduced to the engine in the air intake manifold at about 75 psi, mixed with intake air, and then ignited in the cylinder by a spark plug. The ISL-G uses high engine gas recirculation rates in combination with a passive three-way exhaust aftertreatment catalyst for highly effective hydrocarbon, carbon dioxide, and nitrogen oxide control. The ISL-G currently meets EPA 2010 emissions standards, but offers 19 percent lower “well-to-wheel” carbon dioxide emissions than an ISL diesel engine.