Hitachi ZX 38U-5A Technical Manual page 5

Symbol / Name
Abbreviation
TO Technical manual (Operational principle)
TT Technical manual (Troubleshooting)
T/M Technical manual
W, W/M Workshop manual
E-ECU Engine Controller
GSM Global System for Mobile communications
controller
GPS Global Positioning System
CAN Controller Area Network
A/C Air Conditioner
OP, OPT Option
MPDr. Maintenance Pro Dr.
A/I Auto-Idle
WU Warming-Up
Li Low (Slow) Idle
ATT Attachment
HI, Hi High
LO, Lo Low
EGR Exhaust Gas Recirculation
CSD Cold Start Device
SYMBOL AND ABBREVIATION
Explanation
Technical manual (Operational Principle).
Technical manual (Troubleshooting).
Technical manual.
Workshop manual (Removal and Installation, Disassembly
and Assembly).
Engine controller. E-ECU controls fuel injection amount
according to the machine operating condition.
Communication controller. GSM is a type of wireless
communication system, is used in more than on 100
countries around Europe and Asia, and becomes the factual
global standards of the mobile telephone.
Global positioning system.
CAN communication. CAN is a serial communications
protocol internationally-standardized by ISO (International
Organization for Standardization).
Air conditioner.
Optional component.
MPDr. is software that troubleshooting, monitoring, and
adjustment.
Auto-idle.
Warming-up.
Slow idle engine speed.
Attachment. Attachment is optional parts such as breaker,
crusher, and pulverizer in this manual.
Travel fast position.
Travel slow position.
The EGR control re-circulates a part of exhaust gas in the
intake manifold and combines it with intake-air. Therefore,
combustion temperature is lowered and generation of oxide
of nitrogen (NOx) is controlled.
Engine start device at low temperature. It increasingly
advances the fuel injection timing and increases the fuel
injection amount a little when coolant temperature is less
than 5 °C. Therefore, the engine starting is improved.
SY-1