3.16.2 Structure of fuel cooler
The fuel
cooler is made up of a core (inner fins) and
heat dissipating fins.
(1) Fuel cooler
3.16.3 Function of fuel cooler
Fuel supplied to the engine is pressurized by the fuel
feed pump and the supply pump.
Here, the temperature of the fuel also increases.
Therefore,
before
returning the excess fuel to the tank,
cooling in the fuel cooler suppresses temperature
increase of the fuel in the fuel tank.
3.17 Engine ECU
3.17.1 Outline of engine ECU
The engine ECU controls fuel injection and
aftertreatment devices.
3.17.2 Structure of engine ECU
The engine ECU is made up of a case and electronics
part mounting board.
Furthermore, it has a program called software installed.
(1) Engine ECU
3.17.3 Function of engine ECU
The engine
ECU controls the injection amount, injection
timing, injection rate, and injection pressure during fuel
injection.
Control based on the engine ECU is performed by
sending instructions to each actuator based on input
signals from each sensor.
See CRS control topics for details regarding control
content.
3.17.4 Specification of engine ECU
Operating voltage 12 V
4. ENGINE
MECHANISM
3. Fuel system
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
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