Structure Of Fuel Cooler; Function Of Fuel Cooler; Engine Ecu; Outline Of Engine Ecu - wsm 03-CR-E4 Workshop Manual

4. ENGINE

3.16.2 Structure of fuel cooler

The fuel cooler (1) 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
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
4-30
fuel injection and

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 "Control of common rail system (CRS) engine"
topics for details.

3.17.4 Specification of engine ECU

Operating voltage
MECHANISM
3. Fuel system
12 V
03-CR-E4,03-CR-TE4BG
KiSC issued 02, 2021 A