Table 4-36: Federal Exhaust Emissions Standards for Newly Manufactured Marine
Spark-Ignition Outboard, Personal Watercrafte, and Jet-Boat Enginesa
(g/kWh)
Excel | CSV
1998b |
278.00 |
(0.917 x (151 + 557/P0.9)) + 2.44 |
1 yr for all emissions-related components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
1999 |
253.00 |
(0.833 x (151 + 557/P0.9)) + 2.89 |
1 yr for all emissions-related components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2000 |
228.00 |
(0.750 x (151 + 557/P0.9)) + 3.33 |
1 yr for all emissions-related components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2001 |
204.00 |
(0.667 x (151 + 557/P0.9)) + 3.78 |
1 yr for all emission-related components; 3 yr/200 hr for
specified major emissions control components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2002 |
179.00 |
(0.583 x (151 + 557/P0.9)) + 4.22 |
1 yr for all emission-related components; 3 yr/200 hr for
specified major emissions control components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2003 |
155.00 |
(0.500 x (151 + 557/P0.9)) + 4.67 |
1 yr for all emission-related components; 3 yr/200 hr for
specified major emissions control components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2004 |
130.00 |
(0.417 x (151 + 557/P0.9)) + 5.11 |
2 yr/200 hr for all emissions-related components; 3 yr/200
hr for specified major emissions control components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2005 |
105.00 |
(0.333 x (151 + 557/P0.9)) + 5.56 |
2 yr/200 hr for all emissions-related components; 3 yr/200
hr for specified major emissions control components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
2006+ |
81.00 |
(0.250 x (151 + 557/P0.9)) + 6.00 |
2 yr/200 hr for all emissions-related components; 3 yr/200
hr for specified major emissions control components |
Outboard engines: 350 hr/10 yr; Personal watercraft: 350
hr/5 yr |
KEY: g = gram; hr = hour; HC = hydrocarbon; hp = horsepower; kW = kilowatt;
kWh = kilowatt hour; NOx = nitrogen oxide; yr = year.
a The standards apply to marine spark-ignition outboard, personal
watercraft, and jet-boat engines only. There are currently no federal standards
for marine spark-ignition sterndrive/inboard engines (previously proposed standards
have not been finalized). Marine compression-ignition engines under 50 hp are
covered under the proposed nonroad compression-ignition engine standards. Federal
standards are in development for marine compression-ignition engines over 50
hp.
b P = the average power of the engine family in kilowatts (sales-weighted).
c As an example, the standards for an outboard engine of 125 hp
(just over 93 kW) would be 149.53 g/kWh in 1998, 123.63 g/kWh in 2000, 97.74
g/kWh in 2002, 72.00 g/kWh in 2004, and 46.10 g/kWh in 2006.
d All emissions standards must be met for the useful life of the
engine.
e The standards for personal watercraft did not go into effect until
1999, although the standard went into effect for outboard engines in 1998.
SOURCE:
40 CFR 91 July 1, 2000 edition, pp. 301-302, 398, and U.S. Environmental Protection
Agency, Office of Air and Radiation, personal communication, Aug. 28, 2001.
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