Westport LNG System for Heavy-Duty Trucks

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Westport LNG System for Heavy-Duty Trucks: Specifications

2007 Cummins ISX

Engine weight (dry): 3,021 lbs
Major engine features such as Cummins Intebrake™ and cruise control are retained.
Engine specifications to be confirmed by Westport before engine order.

2007 U.S. EPA & CARB Certification:

NOx 0.6 g/bhp-hr* CO 0.1 g/bhp-hr

PM < 0.01 g/bhp-hr CO₂ 445 g/bhp-hr

* engineering target—subject to certification testing

Taking the place of a muffler is an integrated Cummins Particulate Filter. This unit contains an oxidation catalyst and particulate filter to trap and oxidize the microscopic particles (soot) contained within the exhaust gas.

Cummins Particulate Filter

Cummins Particulate Filter is designed to last for the life of your engine. The average line-haul truck will only perform filter maintenance one time in the first four years. Service intervals are optimized with the system being monitored through the engine control module (ECM) and in-cab displays.

Four engine ratings are offered, two with SmartTorque compatibility. Click to view torque/horsepower curves.

Engine Model	Advertised Horsepower (hp)	Peak Torque @ 1,200 RPM (lb-ft)
450ST*	450	1,550 / 1,750
450	450	1,650
400ST*	400	1,550 / 1,750
400	400	1,450

* SmartTorque: this Cummins exclusive feature automatically adds up to 200 extra lb-ft of torque in the top two gears, so drivers can climb uphill without having to downshift and stay in the top gears longer. This extra power helps maintain road speed, and reduce downshifts with the added benefit of up to 3% better fuel economy. (Only available on 2007+ models)

Currently available in models from:

Kenworth

Compatible models from:

Volvo Peterbilt International

transmission compatibility
Available with manual transmissions compatible with the Cummins ISX and appropriate for the engine rating.

OEM to provide options based on vehicle application.

Tanks are installed along the frame rail, like diesel tanks, and can be used in any combination (maximum of two tanks). To estimate vehicle range, multiply the standard diesel vehicle fuel economy for the applications by the usable diesel equivalent gallons (DEG) value provided in the table below.

Gross Tank Size (US Gal)	Tank 1 Volume (US Gal)	Tank 2 Volume (US Gal)	Nominal Volume (US Gal)	Diesel Equivalent Gallons¹ (DEG)	Approx. Incremental Vehicle Weight² (lbs)	Approx. Chassis Wheelbase³ (inches)
70	70	—	63	33	730	165
100	100	—	90	46	845	170
120	120	—	108	56	910	180
140	70	70	126	66	1,290	190
170	70	100	153	79	1,405	195
190	70	120	171	89	1,470	210
200	100	100	180	92	1,520	210
220	100	120	198	102	1,585	210
240	120	120	216	112	1,650	215

Calculated on an energy equivalent basis.
Estimated incremental vehicle weight is based on the weight of the Westport LNG system,
less the weight of removed diesel components.
Actual wheelbase requirements dependant on vehicle specification.

Click here to view the 2006 LNG System Specification Sheet.

Westport is continually advancing its technology, therefore specifications may change without notice. Photographs and illustrations may or may not include optional equipment.