3. Electric System
3-2
3.1.2
Acceleration control
Emergency 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.
PC14011 PC14012 PC14013
Pressure regulator
Emergency controller
(Control of output and engine speed)
Engine controller (ECU)
Fuel pump (Supply pump)
Pressure sensor
The pressures at 2nd stage is converted into voltage and
outputted.
Engine speed and engine output are adjusted by controlling
fuel injection timing injection quantity, injection pressure and
injection frequency with indication of target speed to be
inputted.
The inputted voltage (pressure signal) is converted into voltage
again, and it outputs to engine controller (ECU).
Engine controller (ECU)
Emergency controller Pressure sensor Pressure regulator
It supplies fuel to the common rail.
Common rail
Injector
It stores the high pressure fuel forcefully sent from the supply
pump and it distributes the fuel to the injectors.
It injects the high pressure fuel which is made in common rail
according to the signal sent from ECU according to the
optimum injection timing, injection quantity, injection rate,
injection frequency and injection conditions.
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Summary of Contents for PDS185S-6E1
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