PRODUCT OVERVIEW
23
Model 3CE1 engine come with the Exhaust Gas
Recirculation (EGR) system to conform to the
engine emission regulations (EPA 2013 rules).
The EGR system and an electronic governor
(Eco-governor) constitute an electronic engine
control system.
The electronic engine control system regulates the
exhaust gas recirculation flow rate and the fuel
injection volume depending on the engine load and
speed signals from the engine controller (E-ECU),
so that the exhaust gas is kept clean according to
the emission control regulations. Figure 6
illustrates the electronic engine control system.
Features of the electronic engine control system
include:
• Engine speed control schemes
Droop control/Low-idling speed up/Auto
deceleration/High-idling speed down/Black smoke
suppression
• Starting aid
Auto preheating/After heating
• Engine failure detection
• CAN communication with the control system of
the driven machine
Consult the operation manual for the driven
machine for applicability of the features that
depends on the machine.
Figure 6
E-ECU
CSD
Engine speed
sensor
Rack position
sensor
Eco-governor
Fuel injection pump
Actuator
Intake
Exhaust
EGR-Valve
Piston
Liner
Inj.Nozzle
Re-circulation
EGR
Starting aid
Coolant temperature
sensor
Starter
Operator's console
Stop switch
Key switch
OFF
Accelerator sensor
CAN
Engine
ON
START
TNV_OperationManual_T4(under 19kW).book Page 23 Wednesday, June 17, 2015 11:23 AM