Cat Hydraulic Excavator 328D LCR User Manual download pdf (Page 4)

Cat

®

C7 ACERT. The Cat C7 with

ACERT™ Technology introduces

a series of evolutionary, incremental

improvements that provide breakthrough

engine technology. The building blocks

of ACERT Technology are fuel delivery,

air management and electronic control.

ACERT Technology optimizes engine

performance while meeting U.S. EPA

Tier 3 engine emission regulations.

Performance. The 328D LCR,

equipped with the C7 engine with

ACERT Technology, provides 8% more

horsepower as compared to the 3126B

ATAAC HEUI in the 325C LCR.

Automatic Engine Speed Control.

The two-stage, one-touch control

maximizes fuel efficiency and

reduces sound levels.

ADEM™ A4 Engine Controller.

The ADEM A4 electronic control

module manages fuel delivery to get

the best performance per liter (gallon)

of fuel used. The engine management

system 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.

Electronic Control Module. The Electronic

Control Module (ECM) works as the

“brain” of the engine’s control system,

responding quickly to operating variables

to maximize engine efficiency. Fully

integrated with sensors in the engine’s

fuel, air, coolant, and exhaust systems,

the ECM stores and relays information

on conditions such as rpm, fuel

consumption, and diagnostic information.

Fuel Delivery. The Cat C7 features

electronic controls that govern the 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. The cooling fan

is directly driven from the engine.

An electrically controlled viscous

clutch fan is utilized to reduce fan

noise. The optimum fan speed is

calculated based on the target engine

speed, coolant temperature, hydraulic

oil temperature and actual fan speed.

The 328D LCR incorporates side by

side cooling, allowing easy access to

keep the cooling cores free of debris.

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.

Noise Reduction Technologies.

The engine mounts are rubber-isolating

mounts matched with the engine package.

Further noise reduction has been

achieved through design changes to

the isolated top cover, oil pan, multiple

injection strategy, insulated timing

cover, sculpted crankcase and gear train

refinements.

4

C7 with ACERT™ Technology

Built for power reliability, economy and low emissions.

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