1. General
50
• Engine family name as assigned by EPA
identifying engine family group.
6YDXM2.00D4T and this identifies
(2) Emission standard
The below table shows the emission standard
of the EPA Emission Regulations for Marine CI
Engines for engines with less than 0.9 liter per
cylinder.
Note: The EPA recommended fuel is used.
(3) Guarantee conditions for emission
standard
In addition to making sure that these
conditions are met, check for any deterioration
that may occur before the required periodic
maintenance periods.
1) Requirement on engine installation condition.
a) Air intake negative pressure.
b) Exhaust gas back pressure
.
2) Fuel oil and lubricating oil
a) Fuel: The diesel fuel oil, ASTM D975
No.1-D or No.2-D, equivalent
(Cetane No. 45 minimally).
b) Lube oil: API grade, class CD or higher.
3) Do not remove the caps restricting injection
quantity and engine speed.
g/kWh
Engine Power Tier NOx HC
NMHC + NOx
CO PM
º 37kW Tier 2 - - 7.5 5.0 0.40
kPa (mmAq)
Permissible
¹2.0 (200)
kPa (mmAq)
Permissible
¹20 (2,000)
6 YDX M 2.00 D 4 T
Method of air aspiration
Number of cylinders
Combustion chamber design
Displacement (liter)
Marine engine
Yanmar
*2006 model year
Model year
6*: 2006
7 : 2007
8 : 2008
9 : 2009
0 : 2010
Method of air aspiration
T: Turbocharged
H: Turbocharged with
intercooler
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