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Cummins Inc.
introducing ISL G NEAR ZERO

introducing ISL G NEAR ZERO

Product catalog summary

Introduction
Cummins Westport introduced the ISL G Near Zero (NZ) natural gas engine in 2016, marking it as the first MidRange engine in North America to achieve emissions certifications from the U.S. Environmental Protection Agency (EPA) and California's Air Resources Board (ARB) for meeting the 0.02 g/bhp-hr optional Near Zero NOx Emissions standard. This engine is suitable for medium-duty trucks, urban buses, school buses, and refuse applications, and can also be used for repowering existing natural gas vehicles.

Emissions and Environmental Impact
The ISL G NZ engine reduces exhaust emissions by 90% compared to the current EPA NOx limit and meets the 2017 EPA greenhouse gas emission requirements with a 9% reduction in GHG emissions. When operating on renewable natural gas (RNG), further GHG reductions are possible. The ARB equates this Near Zero emission level to a 100% battery truck using electricity from a modern combined cycle natural gas power plant.

Technical Features

Electronic Control Module: Monitors and controls engine sensors, fuel, and ignition systems, with compatibility for Cummins INSITE and diagnostic tools.
Three-Way Catalyst: A maintenance-free device for controlling hydrocarbons, CO, and NOx without requiring a Diesel Particulate Filter (DPF) or Selective Catalytic Reduction (SCR) systems.
Closed Crankcase Ventilation (CCV): Reduces engine-related methane emissions by 70% by capturing and redirecting crankcase emissions.

Performance Ratings
The ISL G NZ engine is available in various models with horsepower ranging from 250 to 320 hp and peak torque from 660 to 1,000 lb-ft. All models have a governed speed of 2,200 RPM.

Specifications

Type: 4-cycle, spark-ignited, inline 6-cylinder, turbocharged, CAC
Displacement: 540 cu. in. (8.9 L)
Fuel Types: CNG, LNG, Biomethane
Aftertreatment: Three-Way Catalyst (TWC)

Warranty and Customer Support
The ISL G Near Zero engine comes with the same warranty options as the ISL G natural gas engine. Cummins Westport-powered vehicles are supported by Cummins' extensive service network, with trained technicians and access to genuine parts and warranty support. For assistance, customers can contact Cummins Care at 1-800-DIESELS™ (1-800-343-7357).

Catalog excerpts

Cummins Westport The Natural Choice

Open the catalog to page 1

In 2016, Cummins Westport introduces the ISL G Near Zero (NZ) natural gas engine - the first MidRange engine in North America to receive emissions certifications from the U.S. Environmental Protection Agency (EPA) and the Air Resources Board (ARB) in California for meeting the 0.02 g/bhp-hr optional Near Zero NOx Emissions standard. The ISL G NZ is designed for new medium-duty truck, urban bus, school bus, and refuse applications. It is also available for repowers of existing natural gas vehicles. With exhaust emissions 90% lower than the current EPA NOx limit of 0.2 g/bhp-hr, the ISL G NZ also...

Open the catalog to page 2

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