ALTERNATIVE.EVERY
Next Generation Natural Gas Next Generation Natural Gas EngineEngine
20072007
Joint Venture Company
• Develop, market and sell leading line of gaseous fueled, high performance, low emission, economically viable engines
• Create OEM availability; develop sales channels and industry alliances
• Control product specifications, pricing, marketing, international manufacturing initiatives
• New market development & demonstration initiatives
• Alternative fuel industry & government relations
• Next generation technology programs
• Corporate finance & communications
• Global manufacturing (India, China, Brazil) & supply chain management
• Base diesel engine platform & OEM alliances
• Global distribution and service network
• Industry & government relations .
Why Natural Gas Engines for Buses & Trucks?
Emissions LeadershipMeet 2010 EPA Emissions in 2007
Energy SecurityReduced reliance on imported
oilPathway to hydrogen
Economic BenefitsContinued reliability
improvementImproved EfficiencyGreatest benefits in high fuel use
applications
ALTERNATIVE.EVERY
CWI Engine Reliability CWI Engine Reliability ImprovementImprovement
Key Characteristics-Diesel vs. NG Natural Gas Engines Continuous Improvement
L 10 G C 8.3 C Plus ’07 ISL G
Emissions Better Better Better Better
Reliability Worse Worse Similar Similar
Fuel Cost/Mile Worse Worse Similar Better
Durability Worse Worse Similar Similar
LCC Worse Worse Worse Better
Timeline 1989 1996 2001 2007
C Gas Plus Reliability Improvement
C8.3G / C Gas Plus - Reliability
0
1
2
3
4
5
6
7
1999 3 1999 4 2000 1 2000 2 2000 3 2000 4 2001 1 2001 2 2001 3 2001 4 2002 1 2002 2 2002 3 2002 4
Build Quarter
Rel
ativ
e C
ost
C Gas PlusC8.3 G
Six Fold Reliability Improvement
Customer Profile: Pierce Transit
• Transit agency for Tacoma/Pierce County, WA
• Total fleet: 235 buses• Purchased 38 C Gas
Plus-powered 40’, low-floor buses in 2002
• 100% natural gas fleet by 2005
“The C Gas Plus is head-and-shoulders above the other natural gas engines in our
fleet.” “Reliability of the natural gas vehicles is
very much comparable, and in many cases, better than their diesel
counterparts” Ron Shipley, Pierce Transit
Data Sample: Pierce Transit
Miles Between Engine-Related Road Failures
0 10000 20000 30000 40000 50000 60000
C Gas Plus
C 8.3 G
L 10 Ph III
L 10 Ph II
L 10 Ph I
Diesel
Miles
Customer Profile: Washington Metropolitan Area Transit Authority• Transit agency for
Washington, D.C.• Total fleet: 1,550
buses• Purchased 164 C
Gas Plus-powered 40’, New Flyer buses in 2002
• And Another 150 in Orion Buses in 2005
"We are exceeding the clear air requirements with the CWI C Gas Plus
without compromising reliability“
"From a reliability standpoint the CWI C Gas Plus engines far exceed our goals"
Phillip Wallace, WMATA
Data Sample: WMATA Mean Distance Between Failures
Miles
0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000
4 Month Average
Sept
August
July
June
Fleet Average
New Flyer - C Gas Plus
Diesel Fleet: 1,416Gas Fleet: 164
NREL/WMATA Test-Miles Between Road Calls
Recreation of Figures 14/15 - Cumulative Miles Between Road Calls for Diesel & CNG Buses (All Data)-Enigine & Fuel Sytems Only
0
5000
10000
15000
20000
25000
30000
35000
40000
CWI Aug-02 to Jun-04 Deere March-03 to Sept-04 Diesel Dec-01 to Aug-02
Source: National Renewable Energy Laboratory- Washington Metropolitan Area Transit Authority: Compressed Natural Gas Transit Bus Evaluation. NREL/TP-540-37626 – Pages 26/27
Road calls- (on-
road failure of in service bus) are a
direct indicator
of reliability for transit
buses
ALTERNATIVE.EVERY
2007 ISL G2007 ISL G
HD Emission Standards Continue to Evolve
0.010.01 0.100.10
0.20.2
1.21.2
2.52.5
4.04.0
5.05.0
19941994
19981998
20022002
20072007
20102010
PARTICULATE [g/ HPPARTICULATE [g/ HP--hr]hr]0.00.0
0.00.0
NO
x /
NO
x+
NM
HC [
g/H
PN
Ox /
NO
x+
NM
HC [
g/H
P-- h
r]hr]
15 PPM15 PPM
500 PPM500 PPM
SULFURSULFUR
0.010.01 0.100.10
0.20.2
1.21.2
2.52.5
4.04.0
5.05.0
19941994
19981998
20022002
20072007
20102010
PARTICULATE [g/ HPPARTICULATE [g/ HP--hr]hr]0.00.0
0.00.0
NO
x /
NO
x+
NM
HC [
g/H
PN
Ox /
NO
x+
NM
HC [
g/H
P-- h
r]hr]
15 PPM15 PPM
500 PPM500 PPM
SULFURSULFUR
Urban Bus
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
The Three Key Emission Technologies for 2007 Diesel Engines
• Cooled Exhaust Gas Recirculation (CEGR)
• Variable Geometry Turbocharger (VGT)
• Diesel Particulate Filter (DPF)
Cummins
CumminsTurbo Technologies
CumminsEmissions Solutions
The Two Key Emission Technologies
for 2007 ISL G Natural Gas Engines
• Cooled Exhaust Gas Recirculation (CEGR)
• Three Way Catalyst (TWC)
Cummins
CumminsEmissions Solutions
Next Generation Natural Gas Technology Stoichiometric Featuring Cooled EGR
Lowest emissions with use of simple passive TWCHigher efficiency with combustion enhancements8.9 litre stoichiometric EGR engine with ratings 250- 320 hp
Improved clutch engagement torqueHigher efficiency/improved fuel economyReliability/DurabilityCummins diesel parts
0.2 NOx in 2007
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
2007 ISL G - SpecificationsMaximum Horsepower 320 bhp
300 bhp
280 bhp
260 bhp*
250 bhp*
238 kW
224 kW
209 kW
194 kW
186kW
Peak Torque 1000 lb-ft
860 lb-ft
900 lb-ft
660 lb-ft*
730 lb-ft*
1356 Nm
1166 Nm
1220 Nm
895 Nm
990 Nm
Governed Speed 2100 - 2200 rpm
Engine Displacement 540 cu. in. 8.93 L
Aftertreatment Three Way Catalyst (Passive)
* Note: ISL G 260 and 250 will be available Jan 2008
Peak Power Peak Torque Transmission Match Application
320 @ 2000 1000 @ 1300 Allison B500 Urban Bus Allison 4500RDS Truck
300 @ 2100 860 @ 1300 Allison 3500 RDS Truck280 @ 2000 900 @ 1300 Allison B400 Urban Bus
School Bus260 @ 2200 660 @ 1300 Allison 3500 RDS Sweeper
Yard Spotter250 @ 2200 730 @ 1300 Allison B300 Shuttle Bus
School Bus
2007 ISL G RatingsRating Matching Example
Note: ISL G 260/250 will be available Jan 2008ISL G rated speed is the same as ISL diesel, eliminating the need
to review and adjust final drive ratios
ISL G 280 vs. C Gas Plus 280Torque (lb-ft)
550
600
650
700
750
800
850
900
950
1000 1200 1400 1600 1800 2000 2200 2400
Engine Speed (rpm)
To
rqu
e (l
b-f
t)
ISL G 280 C Gas Plus 280 ISL05 280
No Compromise in Performance
Preliminary Data
ISL G 320 vs. L Gas Plus 320Torque (lb-ft)
550600650700750800850900950
10001050
1000 1200 1400 1600 1800 2000 2200Engine Speed (rpm)
To
rqu
e (l
b-f
t)
ISL G 320 L Gas Plus 320
Significantly higher low speed torque will improve vehicle acceleration
ISL G clutch engagement torque is 34% higher than CWI’s current products
Matched RatingsISL G 300 Torque Output
500
550
600
650
700
750
800
850
900
1000 1200 1400 1600 1800 2000 2200
Engine Speed (rpm)
To
rqu
e (l
b-f
t)
ISL G 300 Power Output
100
125
150
175
200
225
250
275
300
325
1000 1200 1400 1600 1800 2000 2200
Engine Speed (rpm)
Po
wer
(b
hp
)
ISL G 320 Torque Output
400
500
600
700
800
900
1000
1100
1000 1200 1400 1600 1800 2000 2200
Engiene Speed (rpm)
To
rqu
e (l
b-f
t)
ISL G 320 Power Output
100
150
200
250
300
350
1000 1200 1400 1600 1800 2000 2200
Engine Speed (rpm)
Po
wer
(b
hp
)
2007 ISL G Features• 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
• Three Way Catalyst• Exhaust Aftertreatment
– simple passive device, highly effective hydrocarbon, CO, and NOx control.
– Maintenance Free
• Improved torque throughout operating range
• New Electronic Control Module– provides full monitoring and
control of engine sensors, fuel system and ignition system
• Cummins Cooled EGR – lowers in cylinder temperature
and reduces oxygen concentration
• Low installed weight – (1570 lb wet)
• Highest power to weight ratio in its class
2007 ISL G – Key Benefits• Shared block and components with
2007 ISL diesel– Over 80% parts commonality
• 5% efficiency Improvement Target– Lean Burn vs. Stoich EGR
combustion.
• 34% more clutch engagement torque – Better performance
• Transit 280 hp rating torque improved to 900 lb-ft (+6%)
• Rated speed 2200 rpm – (same as diesel)
OEM Availability
• Working with all traditional OEM’s on the transition from C Plus and L Plus engines.
• Transit and Refuse OEM’s have pre production engines for installation engineering – 280, 300, 320 ratings– Follows the engineering of the ISL diesel– Similar packaging and cooling requirements
• 6 cylinder, cooled EGR, air to air aftercooling
• Commercial availability – June 1, 2007
ISL G Applications/OEMsREFUSE VOCATIONALURBAN TRANSIT FUTURE
More information?
• For more information, contact your Cummins Westport regional sales manager, or local Cummins Distributor
• Visit www.cumminswestport.com