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Engine
Built for power, reliability, economy and low emissions.
Meeting regulations... Exceeding expectations.
Environmentally Responsible Design
Caterpillar machines not only help you build a better world, they help maintain
and preserve the fragile environment.
Emissions. The Cat C7 with ACERT
Technology introduces a series of
evolutionary, incremental improvements
that provide breakthrough engine tech-
nology built on systems and components
developed by Caterpillar with proven
reliability. The technology capitalizes on
Cat expertise in four core engine systems:
fuel, air, electronics and after treatment.
By combining ACERT Technology with
the new Economy Mode, customers can
balance the demands of performance and
fuel economy to suit their requirements
and application. ACERT engines meet
EC Stage IIIA emissions regulation.
Fewer Leaks and Spills. Engine oil and
encapsulated hydraulic oil filters are positioned
vertically and are easy to reach to minimize
spillage. Service intervals are extended to reduce
the times fluids are changed and handled.
Hydraulic oil service interval can be extended
to 4000 hours with the S•O•S program.
In addition to the S•O•S program fine filtration
system attachment extends the service interval
to 5000 hours.
Cat Extended Life Coolant extends service
to 6000 h, less need for fluid disposal.
The hydraulic system is compatible with Cat
HEES hydraulic bio-oil for ecologically
sensitive applications.
Performance. The Cat C7 engine
with ACERT Technology offers more
engine power, and runs at lower speeds
for better fuel efficiency and reduced
wear. The 329D is available with two
engine power versions:
– Standard power (140 kW)
– Optional High power (152 kW)
Power Management. Optimal machine
performance for each type of application.
The operator can change the engine
power on the monitor from standard
to high. The high power mode is
recommended for extremely productive
areas and for hard digging applications.
Automatic Engine Speed Control.
The two-stage, one-touch control
maximizes fuel efficiency and reduces
sound levels.
Engine Controller. ADEM™ A4
(Advanced Diesel Engine Management)
electronic control module manages fuel
delivery to get the best performance per
liter of fuel. The controller uses sensors
in fuel, air intake, exhaust and cooling
systems and provides flexible fuel
mapping, allowing the engine to
respond quickly to varying application
needs. It tracks engine and machine
conditions while keeping the engine
operating at peak efficiency.
Fuel Delivery. The Cat C7 features
electronic controls that govern the
mechanically actuated unit fuel
injection system. Multiple injection
fuel delivery involves a high degree
of precision. Precisely shaping the
combustion cycle lowers combustion
chamber temperatures, generating
fewer emissions and optimizing fuel
combustion. This translates into more
work output for your fuel cost.
Cooling System. To reduce fan noise,
the cooling fan is driven from a viscous
clutch which is electrically controlled by
the machine ECM. It calculates optimum
fan speed based on the target engine
speed, coolant temperature, hydraulic
oil temperature and actual fan speed.
The Cat C7 delivers a completely new
layout that separates the cooling system
from the engine compartment.
Air Cleaner. The radial seal air filter
features a double-layered filter core
for more efficient filtration and is
located in a compartment behind the cab.
A warning is displayed on the monitor
when dust accumulates above
a preset level.