AirMan PDS400S-6C3, Руководство по обслуживанию

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3. Electric System
3-4
3.1.3 Acceleration control
Accelerator controller (control of output and engine speed) receives electric signal outputted from
pressure sensor, and it controls electronic fuel injection system by outputting to engine controller
(ECM).
PC13066 PC13067
3.1.4 Preheating control
QOS (Quick On Start) system
The ECM determines the period required for glow (pre-glow, glow, after-glow), and operates the glow
relay and QOS indicator lamp. QOS system allows to make the starting at cold weather easier and
reduce white smoke and noise at starting. When turning the key switch to ON, the ECM detects the
engine coolant temperature by signal from engine coolant temperature (ECT) sensor and changes the
period for glow so that the proper starting conditions can be achieved all the time. Also, after-glow
function allows to stabilize idling immediately after starting.
Pressure regulator
Accelerator controller
(Control of output and engine speed)
Engine controller (ECM)
Electronic control fuel injection
system (Common rail type)
Pressure sensor
The pressures at 2nd stage is converted into voltage and
outputted.
The voltage inputted is converted to control signal and
outputted.
The inputted voltage (pressure signal) is converted into
voltage again, and it outputs to engine controller (ECM)
Engine controller (ECM) Accelerator controller
Pressure sensor
Pressure regulator
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