Abbrevia-
tion
Actual word spelled out
Purpose of use (major ap-
plicable machine (*), or
component/system)
Explanation
IMU
Inertial Measurement
Unit
Engine
This is a device to detect the angle (or angular
velocity) and acceleration of the 3 axes that con-
trol motions.
IMV
Inlet Metering Valve
Engine
This valve is installed at inlet port of pump, and it
adjusts fuel intake amount in order to control fuel
discharged volume of supply pump. (Same as
IMA)
KCCV
Komatsu Closed Crank-
case Ventilation
Engine
This mechanism separates oil in blowby gas and
returns it to the intake side to combust it there. It
primarily consists of filters.
KCSF
Komatsu Catalyzed
Soot Filter
Engine
This filter captures soot in exhaust gas.
It is built in to KDPF.
KDOC
Komatsu Diesel Oxida-
tion Catalyst
Engine
The catalyst is used for purifying exhaust gas.
It is built in to KDPF or assembled with the muf-
fler.
KDPF
Komatsu Diesel Particu-
late Filter
Engine
This component is used to purify the exhaust
gas. KDOC (catalyst) and KCSF (filter to capture
soot) are built-in it.
It is installed in place of the conventional muffler.
KTCS
Komatsu Traction Con-
trol System
Travel and brake
This function recovers the drive force of the
wheels by braking automatically with the opti-
mum force and at the same time activates the in-
ter-axle differential lock when the wheels idle
while the machine travels on the soft ground
road.
(HM)
KVGT
Komatsu Variable Ge-
ometry Turbocharger
Engine
The turbocharger on which the cross-section
area of the exhaust passage is made variable.
LCD
Liquid Crystal Display
Machine monitor
Image display equipment such as a monitor
which assembles in the liquid crystal element.
LED
Light Emitting Diode
Electronic parts
It refers to semiconductor element that emits light
when the voltage is applied in forward direction.
LIN
Local Interconnect Net-
work
Communication and elec-
tronic control
One of communication standards that is used in
the network on the machine.
LS
Load Sensing
Hydraulic system
Function that detects differential pressure of
pump and controls discharged volume corre-
sponding to load.
LVDS
Low Voltage Differential
Signaling
Communication and elec-
tronic control
One of communication standards that is used in
the network on the machine.
MAF
Mass Air Flow
Engine
This indicates engine intake air flow. It is not
used independently but it is used as combined
with sensor. Mass air flow sensor can be called
as MAF sensor.
MMS
Multimedia Messaging
Service
Communication
Service that allows transmission and reception of
short messages consisting of characters or voice
or images between cell phones.
00 INDEX AND FOREWORD
ABBREVIATION LIST
PC290LL-11
00-21
