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