LOWER COST, DOMESTIC FUEL MAXIMUM POWER, TORQUE & EFFICIENCY 2010 EPA & CARB CERTIFIED LOWER GHG EMISSIONS NATURAL GAS ENGINES FOR HEAVY-DUTY TRUCKS

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1 NATURAL GAS ENGINES FOR HEAVY-DUTY TRUCKS LOWER COST, DOMESTIC FUEL MAXIMUM POWER, TORQUE & EFFICIENCY NORTH AMERICA 2010 EPA & CARB CERTIFIED LOWER GHG EMISSIONS

2 APPLICATIONS The HD engine is optimal for applications such as heavy-haul trucks, refuse transfer, regional- POWER THAT DRIVES YOU offers an experience equal to or better 2010 EPA & CARB CERTIFIED than the diesel alternative. The ful The HD engine is HD compression ignition engine boasts certified to 2010 U.S. class-leading emissions performance Environmental Protection while maintaining horse,, and Agency (EPA) and California Air Resources Board efficiency equal to a diesel-fueled engine. (CARB) emissions standards as a stand-alone The Westport HD natural gas engine Available in engine ratings from to platform, without the use of credits. 475 hp (298 to 354 kw), the heavyduty 15-liter HD engine offers 1, to 1,750 lb-ft (1,966 to 2,373 N m) of at rpm. By using selective catalytic reduction (SCR) aftertreatment, the engine achieves up to 5% improved fuel efficiency over engines without it. haul, dump trucks, roll-offs, line-haul, ENGINE RATINGS and other vocational rpm The HD engine is available in a 1,750 lb-ft 2,373 N m number of OEM models contact 336 kw 1,650 lb-ft 2,237 N m Westport HD for more information 298 kw 1, lb-ft 1,966 N m Model Advertised Power HD hp 354 kw HD hp HD hp SPECIFICATIONS Inline 6-cylinder Compression Ignition Engine Displacement 915 in3 15 L LOWER GHG EMISSIONS Advertised Power The HD engine sets the benchmark for reducing 1,1,750 lb-ft 1,9662,373 N m air contaminants from heavy-duty trucks. The low Governed Speed 2,1002,200 rpm 2,1002,200 rpm carbon content of natural gas, burned with the Oil System Capacity efficiency of Westport HPDI technology, reduces greenhouse gas (GHG) emissions by approximately 2127% (well-to-wheel) compared to equivalent diesel engines. Coolant Capacity* 475 hp kw 14 U.S. gal 52.9 L U.S. gal L LNG System Weight* +1,800 lbs Fuel Types kg LNG (primary) + diesel (pilot ignition) * depending on LNG tank configuration NATURAL GAS: SAFE, LOWER-COST, DOMESTIC FUEL Natural gas is one of the world s more abundant sources of energy, This means an average reduction of about 30 tons of GHGs for a truck covering 80,000 miles (129,000 km) annually. For a fleet of 100 trucks, that s a GHG reduction of 3,000 tons in one year the equivalent of taking 340 cars off the road.* * based on US DOE and EPA data of average GHG emissions from 2010 model year compact, mid-size, and SUV class vehicles. with large reserves on the North American continent. Natural gas is less expensive and has less price volatility than diesel fuel. For high NATURAL GAS mileage fleets in particular, fuel Natural gas composed primarily of methane burns cost savings are significant. more cleanly than diesel fuel or gasoline because it has vs. DIESEL a lower carbon to hydrogen ratio. When natural gas is cooled to -260 F Item Miles Kilometers Hours 30,000 48,000 Low-Pressure Diesel Filter2 30,000 48,000 Coolant Filter 50,000 80,000 1,500 Coalescing Filter2,3 125,000 CNG Filter 125,000 4,000 Hydrocarbon Doser Injector Cleaning2 150, , ,000 4, , ,000 6, , ,000 10,000 Oil and Filter 2 DEF Filter2 Valve Adjustment2 hydrogen close to atmospheric pressure. The methane molecule 2 1. under normal duty conditions of mpg ( km/l) or 80,000 lb (36,287 kg) GVW with CES oil carbon resulting liquefied natural gas (LNG) has fuel suitable for long-haul trucking. (whichever occurs first) 1 Particulate Filter Cleaning (-162 C), it condenses into a liquid at an energy density around 60% of diesel KEY MAINTENANCE INTERVALS typical diesel molecule 2. maintenance intervals are based on Cummins ISX 15 diesel engine see manuals for further details 3. or every 5th to 6th oil and filter change interval and to find your local dealer.

3 WARRANTY COVERAGE The Westport HD warranty covers the base engine, HPDI fuel injectors and the LNG tank/fuel pump module. (whichever occurs first) Distance Time 250,000 mi 402,336 km 24 months 6,250 hrs Extended coverage is also available for the engine and the LNG tank/fuel pump module. SALES & CUSTOMER CARE Westport HD is committed to customer satisfaction. We provide complete customer support including: Fleet and fuel use evaluation Fueling infrastructure information Operator training Parts and service available from certified dealer network with factory trained technicians Online Westport HD Service portal Through the Westport Carbon Project (WCP), Westport HD ed vehicles sold since January 1 st, 2010 will be eligible for carbon credits based on an agreed price per ton. Purchasers of an HD-ed vehicle may also be eligible for federal and/or state incentives or tax credits. Contact Westport HD for specific incentive opportunities or to find a demonstration truck in your area West 75th Avenue Vancouver, British Columbia, Canada V6P 6G2 toll-free: tel: fax: sales@westport-hd.com Rev Westport Power Inc.

4 NATURAL GAS ENGINE SPECIFICATION SHEET The 15L Westport HD natural gas engine offers class-leading emissions and performance while maintaining equal horse,, and efficiency to a diesel-fueled engine. Model HD475 HD HD Advertised Power 475 hp 354 kw hp 336 kw hp 298 kw (@ RPM) 1,750 lb-ft 2,373 N m 1,650 lb-ft 2,237 N m 1, lb-ft 1,966 N m Performance Charts 1, ,800 (lb-ft) (hp) 500 (lb-ft) (hp) (lb-ft) speed (rpm) (hp) 1,800 2,000 speed (rpm) 1,800 2, speed (rpm) 250 1,800 2,000 NORTH AMERICA TANK CONFIGURATION Tanks are mounted along the frame rail, like diesel tanks, and can be used in any combination to a maximum of two tanks. To estimate vehicle range, multiply the standard diesel fuel economy for the application by the usable diesel equivalent gallons (DEG) value(s) in the table below for the specified tank or tank combination. Westport HD equipped LNG trucks require a small diesel tank for the diesel pilot used by the Westport HD injectors for ignition. 12 Gross LNG Tank Size (US Gal) Nominal Volume (US Gal) Diesel Equivalent Gallons Actual size determined by vehicle OEM. 2 Calculated on an energy equivalent basis. FUEL COMPOSITION The Westport HD System is certified for operation with California Air Resource Board (CARB) specification natural gas with the following composition: Chemical Formula Common Name(s) Composition CH 4 methane min. 90% C 2 H 6 ethane max. 4% C 3 H 8 propane & higher hydrocarbons max. 2% C 6 H 14 hexane & higher hydrocarbons max. 0% O 2 oxygen max. 0% CO 2 + N 2 carbon dioxide & nitrogen max. 4% In addition, the Wobbe Index of the fuel must be between 44.5 and MJ/m 3 based on the lower heating value (LHV). If your fuel does not meet the above specifications, contact Westport HD to discuss other options.

5 THE WESTPORT HD SYSTEM LNG fuel for the Westport HD engine is stored in the LNG tank, and drawn out with a unique LNG pump. The LNG is vaporized using excess heat from the engine coolant and exits the tank module at approximately 100 ºF and 4,500 psi (40 ºC and 30 MPa). The warm, high-pressure gas is filtered and passed through an accumulator vessel that dampens pressure fluctuations and provides natural gas for engine start-up. At the same time, a diesel fuel pump draws and pressurizes diesel fuel from the pilot diesel tank. Both the diesel and natural gas are sent to the fuel conditioning module, where they are pressure regulated, filtered, and distributed to the fuel injectors. The Westport HD engine is electronically managed by engine control units, allowing continuous adjustments that provide optimal and unparalleled engine efficiency. HIGH-PRESSURE DIRECT INJECTION (HPDI) Westport HPDI technology uses natural gas as the primary fuel, along with a small amount of diesel as a pilot ignition source or liquid spark plug. At the heart of the engine is a revolutionary patented injector with a dual-concentric needle design. It allows for small quantities of diesel fuel and large quantities of natural gas to be delivered at high pressure to the combustion chamber. The natural gas is injected at the end of the compression stroke. Under the pressures found in the combustion chamber of a normal diesel engine, natural gas requires a higher ignition temperature than diesel. To assist with the ignition, a small amount of diesel fuel is injected into the engine cylinder followed by the main natural gas fuel injection. The injector body diesel acts as a pilot, rapidly gas needle pilot needle igniting the hot combustion products, and thus the natural gas. HPDI diesel pilot / natural gas replaces approximately 95% of the diesel fuel (by energy) with natural gas. fuel injectors (under valve cover) Westport HD natural gas engine LNG tank and pump module fuel conditioning module highpressure accumulator warm, high-pressure compressed natural gas CHASSIS-MOUNTED ENGINE-MOUNTED West 75th Avenue Vancouver, British Columbia, Canada V6P 6G2 toll-free: tel: fax: sales@westport-hd.com Rev Westport Power Inc.