QSF2.8 Folded Brochure0 pages

Bulletin 4087245 Printed in U.S.A. 4/12
©2012 Cummins Inc.
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Cummins Inc.
Box 3005
Columbus, IN 47202-3005
U.S.A.
Better Technology.
When Cummins introduced the Model F engine in the 1920s, it was revolutionary
four-cylinder technology, installed in one of the first excavators with diesel power.
Today, 90 years later, the legacy of the Model F is renewed with the new QSF2.8
four-cylinder, the smallest fully electronic-controlled, high-pressure common-rail
engine ever introduced by Cummins for the off-highway industry. This is truly a
clean-sheet design, ready to set a new class standard for 49- to 74-horsepower
(37-55 kW) applications. Smaller. Stronger. Smarter.
Introducing The QSF2.8.
1926 – Model F
2012 – New QSF Series
Better Installation.
The low weight and space-efficient envelope of the naturally aspirated 2.8-liter QSF enable the
engine to replace installations down to 2.2 liters while bringing significantly better performance
and higher durability. Compared with installations of engines up to 3.4-liters, the turbocharged
QSF2.8 offers a smaller, lighter and more fuel-efficient solution with strong torque delivery.
This installation advantage gets even better to meet Tier 4 Final and Stage IIIB low-emissions
standards with the simple addition of the Cummins Compact Catalyst exhaust aftertreatment,
a “fit and forget” design that never needs any operator input or maintenance. This means the
same engine envelope, the same cooling requirements and the same servicing for the Tier 4
engine as for the Tier 3 engine. The QSF2.8 is truly a global engine, resulting from unique design
collaboration with Cummins technical teams in Europe, China and the United States.
Tier 4 Final.
Small Catalyst. Big Difference.
Better Performance.
The QSF2.8 is built with exceptional strength, ready for the toughest applications in the industry.
A cast-iron, sculptured block reduces torsional vibration, and the power cylinder is designed
with the same peak-pressure capability as Cummins powerful QSB4.5 engine. The QSF2.8
also takes a design lead from the proven QSB4.5, with a high-efficiency rear gear train providing
superior mounting stiffness and a reduction in gear noise.
While the 2.8-liter architecture incorporates many features associated with higher-displacement
engines, the wet weight is remarkably low at just 507 pounds (230 kg) due to the innovative
use of high-strength composite materials for features such as the valve cover. The engine is
not only stronger, but also smarter. Cummins electronic control system drives the High Pressure
Common Rail (HPCR) system to enable multiple injection events with cleaner, more fuel-efficient
combustion. The system continuously monitors all key engine parameters and automatically
optimizes performance.
49-74 Horsepower
High Power. Low Weight.