Komatsu Technology
Komatsu develops and produces all major
components, such as engines, electronics
and hydraulic components, in house.
With this “Komatsu Technology,” and adding
customer feedback, Komatsu is achieving
great advancements in technology.
To achieve both high levels of productivity and
economical performance, Komatsu has devel-
oped the main components with a total control
system.
The result is a new generation of high perfor-
mance and environment-friendly excavators.
4
P
RODUCTIVITY &
E
COLOGY
F
EATURES
HYDRAULIC EXCAVATOR
Electronic control
unit for engine
Hydraulic system
controller
Engine
Heavy duty HPCR (High Pressure
Common Rail) system
Hydraulic control valve
Flow divide/merge control
with EPC
Main pump
Two pump independent control
LCD color monitor
5
Low Emission Engine
Komatsu SAA6D107E-1 meets EPA, Tier 3 and EU stage
3A emissions regulations and reduced NOx
emission by 29% compared with the
PC228US-3.
Low Operation Noise
Enables a low noise operation using the low-noise engine
and methods to cut noise at source.
Electronically controlled
common rail type engine
• Multi-staged injection
• Highly rigid cylinder block
Dynamic noise is reduced.
(Compared with the PC228US-3)
Low-noise muffler
Optimal arrangement of
sound absorbing materials
H
Y D R A U L I C
E
X C A V A T O R
PC228US
-3E0
PC228US
-3E0
0
Large Digging Force
The machine has a digging force equal to that of PC200-8.
Furthermore, the operator can increase the power by 8 %
using single-touch power increase function when requiring
an extra power.
Excellent Travel Performance
With large drawbar pull and automatic gearshift function that
changes the travel speed between Hi and Lo speed at the
optimum shift point according to the load, the machine can
travel over the sever job site. The machine can also travel
quickly and speedy and comfortably travel while making a
turn.
Working Mode
Application
Advantage
Power mode
●
Maximum production/power
P
●
Fast cycle time
E
Economy mode
●
Excellent fuel economy
L
Lifting mode
●
Hydraulic pressure is
increased by 7%
Breaker
●
Optimum engine rpm,
B
mode
hydraulic flow for breaker
operation
Working Mode Selection
The PC228US-3E0 excavator is equipped with four working
modes (P, E, L and B mode). Each mode is designed to
match engine speed, pump speed, and system pressure with
the current application. This provides the flexibility to match
equipment performance to the job at hand.
Economy Mode
Economy mode is environmentally friendly. Fuel consumption
is reduced 14% (compared with PC228US-3 Active mode).
Lifting Mode
When the lifting mode is selected, lifting capacity is
increased 7% by raising hydraulic pressure.
Breaker Mode
Flow can be adjusted from the cab to match various attach-
ment requirements.
E
P
Economy
mode
L
Lifting
mode
B
Breaker
mode
Power
mode
High Stability
The PC228US-3E0 offers exceptional lifting capacity and
high stability with a large counterweight that requires no
additional clearance.
