LOAD-BASED SPEED CONTROLAND GEAR-DOWN PROTECTION

Every MPG.If you’re looking for an engine that gets every ounce of

energy out of every drop of diesel fuel, you’re looking

for a Cummins. No other engine in its class has the

sophisticated electronic controls to help you achieve

the best possible fuel economy, on every trip and with

every driver. Only Cummins has the combination of

Load-Based Speed Control (LBSC) and Gear-Down

Protection (GDP), available on every ISX and ISM engine.

Better Fuel Economy, Every Trip.Of all the fuel-saving devices that are available for

trucks today, none is more efficient or effective than

the person behind the wheel. The difference between

inexperienced and expert drivers is as much as 30%!

That’s thousands of dollars you can save, every year.

Cummins patented Load-Based Speed Control can

help your drivers achieve mpg targets.

Under low or intermediate power demands, LBSC

gives your driver a performance incentive to upshift

earlier in the rpm range. It “cues” the driver at the

exact point where shifting is optimized, which will

help to lower average engine operating speeds.

Engines that consistently run at a lower rpm get

higher fuel economy. They also run quieter and

have a longer life-to-overhaul.

The Power You Need,When You Need It.Load-Based Speed Control is integrated into your

engine’s Electronic Control Module (ECM), giving

drivers the power they need to climb hills and pass

slower-moving traffic while still providing exceptional

fuel economy in every other driving situation.

LBSC senses how much load your engine is pulling,

and adjusts the engine rpm that are available (in all but

the top two gears). For example: on the ISX engine,

on a fully loaded run up a grade, it will increase the

engine rpm limit to 2000 rpm (from the traditional

1800 rpm) so drivers can utilize the full strength of

the engine to get up to speed.

LOAD-BASED SPEED CONTROL.

When Does LBSC Limit Engine Speed?Only when all four of the following operating

conditions are met:

■ On a road grade of 2% or less

■ When gross combined weight is

80,000 pounds or less

■ When the truck is in an appropriate

transmission gear ratio

■ When the transmission is in gear

When Does LBSC Allow MaximumEngine Speed?Load-Based Speed Control gives your drivers full

engine performance when any one of the following

driving conditions exist:

■ In the top two gears (speed may be limited

by gear-down protection or maximum cruise

control/road speed governor settings)

■ During gear changes to ensure drivetrain

synchronization

■ In the Automatic or Drive mode of automated

manual transmissions

Gear-Down Protection.Gear-Down Protection promotes increased fuel

economy by encouraging the driver to operate

as effectively as possible in top gear, where fuel

consumption is lower. It does so by limiting vehicle

speed one gear down. This only happens when

engine sensors read that the engine is operating

in a “light” load mode. Under light loads, when

downshifting would be unnecessary, Gear-Down

Protection can be set to limit vehicle speed very

noticeably, thereby providing the operator with a

strong incentive to remain in top gear.

When lugging uphill or pulling heavy loads, Gear-Down

Protection allows access to the full operating range of

the engine in all gears. Therefore, under heavy load,

the operator can accelerate up to heavy-load vehicle

speed in any gear. This allows the vehicle to perform

well under heavy loads, but still encourages the use

of the most efficient gear.

Getting Every MPG.For more helpful advice on how you and your

drivers can achieve the best possible mpg

through vehicle specification, tire selection,

driving habits and more, please visit our web site

at www.everytime.cummins.com. To learn about

all the features and parameter settings available

with your Cummins ISX or ISM engine, and to create

a new spec that you can upload directly to your

truck’s ECM, visit www.powerspec.cummins.com.

Every Question, Answered.If you would like additional information about Cummins

engines or options that can improve your fuel economy,

contact your Cummins dealer or distributor or call us

toll-free at 1-800-DIESELS (1-800-343-7357).

Cummins Inc.Box 3005Columbus, IN 47202-3005U.S.A.

Phone: 1-800-DIESELS (1-800-343-7357)Fax: 1-800-232-6393Internet: www.everytime.cummins.com

Bulletin 4103852 Printed in U.S.A. 2/05©2005 Cummins Inc.