28 April 2004 Cummins Confidential 1

Cummins QSK50 Tier IIInstallation Impact

(as compared to QSK45)

FCD pistons & New cooling nozzles

New LTA thermostat housing

Modified head, rocker housing and cover – remove injector lever

New fuel feed and drain plumbing

Combined jacket and LTA water pump & plumbing

New high flow lube pump

New key slotted crank & tone wheel

New cam and crank position sensors New fuel pump and

drive

New fuel filter and head inc. prime pump

3 New ECM’s, mounting & harness

New Inlet manifold, cover & crossover inc. QSK60 core

Major Changes for Tier II K2000E

Kieran Richards

Thursday, 20 November 2003. rev.4.0

New Exhaust manifold inc New Thermistor

New water cooled turbochargers & plumbing

New injectors

New Combo lube filters and head

+ = Product Improvement

$ = Cost Reduction

+

+ $

+ $

+ $

Preliminary (U

pdate Pending)

28 April 2004 Cummins Confidential 3

Overview• Tier 2 QSK50 production start date is Jan 1, 2006, in compliance

with US EPA emission requirement.

• Available ratings from 1400-2300hp (single and two stage turbocharging.)

• Altitude capability comparable to Tier 1 when comparing similar output ratings.

• Engine performance Impacts– Increased fuel consumption– Increased mass air flow

• 2 Pump 2 Loop aftercooling

• Minimal installation impacts

28 April 2004 Cummins Confidential 4

Ratings/Altitude Capability

10,000Two Stage1600@1900

5,000Two Stage2350@19008,000Two Stage2100@19008,000Two Stage2000@1900

8,000Two Stage1600@1800TBDSingle Stage1600@1800TBDSingle Stage1500@19006,000Single Stage1400@1800

Altitude Capability (ft)Turbocharger Arrangement

Rating (hp@rpm)

28 April 2004 Cummins Confidential 5

Performance Impact• Fuel consumption of the QSK50 2300Hp rating will be

approximately 6% higher than QSK45 2250Hp Tier 1

• Air mass flow is expected to increase by approximately 8% (Preliminary – testing ongoing to verify)

28 April 2004 Cummins Confidential 6

Cooling System/Heat Rejection Impact• 2 Pump 2 Loop aftercooling

• Engine coolant heat rejection is expected increase by 6%

• Water outlet connections will remain in approximately the same location

• Water inlet connections for both the LTA coolant circuit and Engine coolant circuit are on the right bank side of the engine.(QSK45 had inlet connections for the two circuits on opposite banks of the engine.)

28 April 2004 Cummins Confidential 7

Mechanical Interface/OEM Connection Changes• QSK50 and QSK45 have different turbocharger inlet and

exhaust outlet connections. There are 2 air inlet connections and 2 exhaust connection, 1 of each at both the front and rear of the QSK50.

QSK45 QSK50

• The diameter of the QSK50 inlet and exhaust connections are also larger than on the QSK45.– Recommended turbocharger outlet size remains 8” diameter– Diffuser no longer required due to larger turbo outlet

28 April 2004 Cummins Confidential 8

Mechanical Interface/OEM Connection Changes

• Fuel inlet connection will be located on the filter head by the pan rail towards the front of the engine

• Fuel drain location will be located on the fuel pump.)

• Heat rejection to fuel has been dramatically reduced when compared to QSK45. This may allow some customers avoid the use of fuel coolers.

• A gear driven air compressor will no longer be an option

28 April 2004 Cummins Confidential 9

Fuel Connections

Customer Drain Connection

Customer Supply Connection

28 April 2004 Cummins Confidential 10

Electrical Wiring Interface• Three OEM connectors will be

required with the new configuration– Signal Connector #1

(Deutsch 31-pin connector)– Signal Connector #2

(Deutsch 23-pin connector)– Power Connector (Deutsch

16-pin connector)

• OEM connection points located on the left bank near the intake manifold, pointing toward the rear.

28 April 2004 Cummins Confidential 11

• Power Connector – Deutsch HD36-24-16SE-059 (OEM Side) & HD34-24-16-PE (Cummins

Side) – Sixteen 12 Gauge (AWG) Contacts, 100 AMP Capacity– Discrete connections for all module power, grounds plus keyswitch

• Signal Connector #1 – Deutsch HD36-24-23SE-059 (OEM Side) & HD34-24-23PE (Cummins

Side) – Twenty Three 16 Gauge Contacts

• Signal Connector #2 – Deutsch HD36-24-31-PE-059 (OEM Side) & HD34-24-31-SE (Cummins

Side) – Thirty One 16 Gauge Contacts

Electrical Wiring Interface

28 April 2004 Cummins Confidential 12

Installation Impact Summary

MountingAir Inlet and ExhaustCoolant OutletLTA Coolant InletEngine Coolant InletFuel Similar

of engine (pointing outward)Similar

Moved to Right BankSimilar

Connection points on the QSK50 are very similar to the QSK45

Tier 1 to Tier 2Similar

Moved to Front & Rear

Item Tier 1 QSK45 Tier 2 QSK50Performance

Power - HP [KW] 2250 [1491] @ 1900 2350 [1750] @ 1900Max Torque - lb*ft [Nm] @ rpm 6300 [8542] @ 1500 6440 [8746] @ 1500Speed Range - RPM 600 - 2050 600 - 2150Fuel System HPI MCRSFuel Consumption Rated / Min - lb/hp*hr .345 / .327 +6%

Temp/Airflow infoHeat rejection to coolant @ rated - BTU/min 55638 +6%Air flow - ft3/min 4794 +8%Air mass flow - lb/min 349 +8%Max IMT @ 77 F ambient 140 140Alt Capability - ft [m] 5000 [1524] 5000 [1524]

Application FeaturesElectronics Features Quantum Family Electronics Quantum Family Electronics

Electronics Connections 2 Deustch (31pin & 21 pin)9 pin 1939 service connector

3 Deustch (31/23/16 pin)9 pin 1939 service connector

Engine Dimensions *With Filters46 gallon sump

*With Filters54 gallon sump

Height (in [mm]) 74 [1880] 74 [1880] Length (in [mm]) 94 [2399] 110 [2794] Width (in [mm]) 58 [1483] 56 [1422]Dry Weight - lb ~ 12410 (with flywheel)

Wet Weight - lb 13200 lbs approx(oil and coolant)

QSK50 Oil & Gas Rating

Approximately 10% lighter