KOMATSU ABBREVIATION parts 2

Abbreviatio
n
Full SpellingPurpose of use (major
applicable machine (*), or
component/system)
Explanation
O.L.S.S. Open-center Load Sens
ing System
Hydraulic Hydraulic system that can tors at the same time, regardless of the load.

P.C. Pressure Control Hydraulic Controlling the oil pressure.
P.C.C.S. Palm Command Control
System
Steering
(D)
System in which a controller instantly analyses
data from each lever, pedal, and dial, and carries
out optimum electronic control of the engine and
HST.
P.C.V. Pump Control Valve EngineValve installed at inlet port of pump to adjust fuel
intake amount in order to control fuel discharge
amount of supply pump.
P.P.C. Proportional Pressure
Control
Hydraulic Control system that moves an actuator in propor- tion to the oil pressure.
P.P.M. Piston Pump and Motor Hydraulic
(D, PC, etc.)
Piston pump and motor.
P.T.O. Power Take Off Power train A device to take off power of the engine in order to
drive a hydraulic pump, an air compressor, etc.
P.T.P. Power Tilt and power
Pitch dozer
Work equipment
(D)
Function that carries out hydraulic control of the tilt
and pitch of the bulldozer blade.
S.I. Le System International
d’ Unites
UnitInternational System of Units (abbreviated SI from
the French Le Systeme Internationale d’Unites) is
the modern form of the metric system, and is the
world’s most widely used system of measurement.
There’re seven base units: meter (m), kilogram
(kg), second (s), ampere (A), kelvin (K), candela
(cd), and mole (mol). The derived units include
Pascal (Pa), Newton (N), etc.
SOL. Solenoid ElectronicSolenoid is a loop of wire. However, as a matter of
fact in engineering, it refers to an actuator consists
of a solenoid and an iron core that is moved by the
magnetic force when the solenoid is energized.
The word solenoid also often refers to a solenoid
valve.
T.W.V. Two Way Valve Hydraulic and electronic Solenoid valve that switches over direction of flow.
V.H.M.S. Vehicle Health Monitoring
System
Monitoring and communica
tion
(D, HD, PC, WA : Large size)
Communications system that transmits machine
data, such as the present position of the machine,
daily or aggregate hours of operation, fuel con
sumption, radiator water temperature, oil or filter
replacement interval, to make it possible to collect
and check this data from a distant place (Devel
oped for use on large machines used in mines).


*: Code for machine family
D: bulldozer
HD: dump truck
HM: articulate dump truck
PC: hydraulic excavator
WA: wheel loader



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