SANY SRT45 - QUANTUM Electronic Fuel System; Quantum Electronic Fuel System - Description

SRT45 Off-Highway Truck
3-17
Safety, Operation and Maintenance Manual
3.11.3 Quantum electronic fuel system -
description
1. Electronic Control Module (ECM)
Receives electronic inputs from the driver as
well as from mounted sensors that provide
information electronically, such as oil pressure
and temperature and intake manifold pressure.
This information is used to control both the
quantity of fuel injected and injection timing.
2. Programmable Read Only Memory
Located in the ECM and encoded with the
operating software. Additional information
is programmed into the EEPROM. This
information controls the horsepower rating,
torque curve, maximum engine speed and
engine protection devices. The ECM processes
this information and sends electronic signals
to the Electronic Fuel System Injectors where
the precise amount of fuel is injected into the
engine.
3.Electronic Fuel System Injectors
The injector is a lightweight, compact unit that
injects diesel fuel directly into the combustion
chamber. The amount of fuel injected and the
beginning of injection timing is determined by
the ECM. The ECM sends a command pulse
which activates the injector solenoid.
The injector performs four functions:
a - Creates the high fuel pressure required for
efcient injection.
b - Meters and injects the exact amount of fuel
required to handle the load.
c - Atomizes the fuel for mixing with the air in
the combustion chamber.
d - Permits continuous fuel ow for component
cooling.
Electronic fuel system injectors are self
compensating and virtually eliminate engine
tune-ups.
Note:
Never apply 12V or 24V directly to
terminals on the injector as it will burn out.
Before removing injectors.
Controls and Operating
Courtesy of Machine.Market