EVERY ALTERNATIVE. Why Natural Gas Engines for Buses & Trucks? Emissions Leadership Meet 2010 EPA Emissions in Next Generation Natural Gas Engine Economic Benefits Continued reliability improvement Improved Efficiency Greatest benefits in high fuel use applications Energy Security Reduced reliance on imported oil Pathway to hydrogen HD Emission Standards Continue to Evolve NOx / NOx+NMHC [g/hp-hr] 1994 500 PPM 5.0 1998 4.0 SULFUR 2002 2.5 Urban Bus 1.2 15 PPM Phase-In Period Introducing Next Generation Natural Gas Engine technology ISL G will meet 2010 emissions standards ahead of schedule 85% lower NOx than C Gas Plus 34% more torque at idle Improved efficiency=improved fuel economy Maintenance Free Exhaust System 0.2 0.0 0.0 2010 0.01 0.10 PARTICULATE [g/hp-hr] 1
The Three Key Emission Technologies for Diesel Engines The Two Key Emission Technologies for ISL G Natural Gas Engines Cooled Exhaust Gas Recirculation (CEGR) Cooled Exhaust Gas Recirculation (CEGR) Variable Geometry Turbocharger (VGT) Turbo Technologies Three Way Catalyst (TWC) Emissions Solutions Diesel Particulate Filter (DPF) Emissions Solutions Next Generation Natural Gas Technology Stoichiometric Featuring Cooled EGR Lowest emissions with use of simple passive TWC Higher efficiency with combustion enhancements 8.9 litre stoichiometric EGR engine with ratings 250-320 hp Improved clutch engagement torque Higher efficiency/improved fuel economy Reliability/Durability diesel parts 0.2 NOx in vs. 1.2 Phase in Provision What is a 3-Way Catalyst? Simple passive device, like oxidation catalyst Meets EPA Urban Bus useful life requirement Maintenance Free 2
ISL G - Preliminary Specifications Maximum Horsepower Peak Torque Governed Speed 320 bhp 300 bhp 280 bhp 250 bhp* 1000 lb-ft 860 lb-ft lb-ft 660 lb-ft* 2200 rpm 238 kw 224 kw 209 kw 186 kw 1356 Nm 1166 Nm 1220 Nm 895 Nm Engine Displacement 540 cu. in. 8.93 L NOx Emissions PM Emissions Aftertreatment 0.2 gm/bhp-hr. 0.01 gm/bhp-hr. Three Way Catalyst (Passive) * Note: ISL G 250 will be available Jan 2008 ISL G Launch Ratings Preliminary Specifications Peak Power Peak Torque Transmission Match 320 @ 2000 1000 @ 1300 B500 Bus - 4500RDS Truck 300 @ 2100 860 @ 1300 3500 RDS Truck 280 @ 2000 @ 1300 B400 Bus 250 @ 2200 660 @ 1300 TBA Note: ISL G 250 will be available Jan 2008 No Compromise in Performance 950 ISL G 280 vs. C Gas Plus 280 2400 ISL G 280 C Gas Plus 280 ISL05 280 Significantly higher low speed torque will improve vehicle acceleration 1050 1000 950 Preliminary Data ISL G clutch engagement torque is 34% higher than CWI s current products ISL G 320 vs. L Gas Plus 320 Power (bhp) Matched Ratings ISL G 300 Torque Output 500 ISL G 300 Power Output 325 300 275 250 225 200 175 150 125 100 Power (bhp) ISL G 320 Torque Output 1100 1000 500 400 Engiene Speed (rpm) ISL G 320 Power Output 350 300 250 200 150 100 ISL G 320 L Gas Plus 320 3
ISL 8.9L Block Major options shared with diesel product Viscous crankshaft vibration damper and related options Smaller frame, water cooled, wastegate turbocharger Open crankcase breather system Dual potentiometer throttle pedal Capable with 2-pin float type coolant level sensor, or AC powered 3-pin coolant sensor Engine Manufacturers Diagnostic (EMD) interface Increased flow water pump New Electronic Control Module provides full monitoring and control of engine sensors, fuel system and ignition system Cooled EGR lowers in cylinder temperature and reduces oxygen concentration Low installed weight (1570 lb wet) Highest power to weight ratio in its class Stoichiometric EGR Uses high EGR rates in combustion process in place of excess air (Lean Burn). Oxygen free exhaust allows for the use of a three way catalyst Exhaust Aftertreatment with Three Way Catalyst -simple passive device, highly effective hydrocarbon, CO, and NOx control. Maintenance Free Single 18.7 CFM or twin 30.4 CFM air compressor with 155 ft-lb drive through torque Increased capacity front end accessory belt drive ISL G fan drive options are shared with the ISL diesel SAE No 1 and No. 2 aluminum flywheel options available. Starting motor mounted on cold side of the engine. Exhaust manifolds were redesigned to accommodate EGR system Turbo locations limited by diesel hardware availability. High mount rear out is only option planned for launch. Other options based on the diesel manifolds will be added when available. ISL G Key Benefits Shared block and components with ISL diesel Maintenance Free exhaust system 5% efficiency Improvement Target Lean Burn vs. Stoich EGR combustion. + 34% clutch engagement torque Improved torque throughout operating range Transit 280 hp rating torque improved to lb-ft (+6%) Rated speed 2200 rpm (same as diesel) 4
Warranty-Every Coverage Bus/Shuttle/Coach Standard 2 years Unlimited Mileage/Kilometers with full parts and labor coverage on warrantable failures. Major components are covered for 3 years / 300,000 miles (482,804 km.) Truck Full engine coverage is provided for 2 years / 250,000 miles (402,336 km) whichever comes first Base coverage is same as diesel Extended Coverage programs for refuse and transit will be offered All warranty programs administered per Standard Policies 5