10/12/2010
4
Company Confidential
Speed
Rack
position
Eco-Governor
Fuel Pump
CSD
Actuator
EGR
Starting Aid
CW Temp.
Starter
Display
Switch
Key Switch
OFF
ON
START
Accelerator
CAN
ENGINE Tier 3 Improvements
– YANMAR ECO
Company Confidential
EGR Control
– exhaust gas re-circulation
Standard Function for >= 37kW
Intake
Exhaust
ECU
Speed,Load & Temp
ECU
EGR Valve
Piston
In
j.
N
o
zzl
e
EGR Valve
Combustion temperature is reduced.
NOx Reduced
Exhaust Gas Re-Circulation
Speed, Load, &
Temp.
ENGINE Tier 3 Improvements
– YANMAR ECO
Company Confidential
Intake
EGR-Valve
Piston
Liner
In
j.
N
o
zzl
e
Exhaust
Turbo Charger
EGR Cooler
Reverse flow protection
Re-circulated Gas Cooling for
Low Emission
Cooled EGR system
ECU
Speed , Load & Temp.
ECU
Speed , Load & Temp.
Re-circulation
One way valve
One way valve
ENGINE Tier 3 Improvements
– YANMAR ECO
