Hello scooterguy-ga
I have found a Regulatory Announcment from EPA dated Dec 2003 that I
believe contains the answer to your question.
"The U.S. Environmental Protection Agency (EPA) is adopting more
stringent emission standards for new highway motorcycles. Under the
current standards, which are over 20 years old, today?s motorcycles
produce more harmful emissions per mile than a car or even a large
sport utility vehicle (SUV). These new standards will reduce the
combined hydrocarbon and nitrogen oxide emissions in the exhaust by
50 percent as well as the harmful health effects of mobile source air
toxics.... "
Also the document states that
"In this final rule, EPA is adopting new emission
standards for exhaust and evaporative emissions from highway motorcycles.
The standards are based on comparable requirements adopted in
California. The final rule extends the California requirements nationwide
two years after they initially take effect in California. "
Here is the table
Highway Motorcycle Exhaust Emission Standard |
Clarification of Answer by
silviares-ga
on
13 Sep 2006 12:57 PDT
Sorry something happened with my system and the complete answer was
not posted, here it is.
Hello scooterguy-ga
I have found a Regulatory Announcment from EPA dated Dec 2003 that I
believe contains the answer to your question.
"The U.S. Environmental Protection Agency (EPA) is adopting more
stringent emission standards for new highway motorcycles. Under the
current standards, which are over 20 years old, today?s motorcycles
produce more harmful emissions per mile than a car or even a large
sport utility vehicle (SUV). These new standards will reduce the
combined hydrocarbon and nitrogen oxide emissions in the exhaust by
50 percent as well as the harmful health effects of mobile source air
toxics.... "
Also the document states that
"In this final rule, EPA is adopting new emission
standards for exhaust and evaporative emissions from highway motorcycles.
The standards are based on comparable requirements adopted in
California. The final rule extends the California requirements nationwide
two years after they initially take effect in California. "
Here is the table
Highway Motorcycle Exhaust Emission Standard
Class Engine Size (cc) Implementation Date HC g/Km HC+NOx g/km CO g/km
Class I Less than 170 2006 1.0 - 12
Class II 170-279 2006 1.0 - 12
Class III 280 & above 2006 - 1.4 12
Class III 280 & above 2010 - 0.8 12
You can access the whole document at
http://www.epa.gov/oms/regs/roadbike/420f03044.pdf#search=%22California%20%22Emission%20Standards%22%20scooters%22
I din't provide the California data because as you can see from the
comment they are the same.
Let me know if you need some parts of the question clarified further.
The search I used was
California "Emission Standards" scooters
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Request for Answer Clarification by
scooterguy-ga
on
13 Sep 2006 14:19 PDT
Thanks for posting! That's a step in the right direction, but I'm not
looking for motorcycle engine emission info. There's a different
category for small engines. That's what I need. These small engines
are used in lawnmowers, leaf blowers, gas scooters, etc. They are
2stroke or 4stroke and I believe they are designated as 50cc or less
in size. The emission requirements are different in California from
Federal requirements and I need both. I did some poking around and I
believe the greenhouse gasses for which I need emission standards info
on are primarily; Carbon Dioxide (CO2), Methane (CH4), Nitrous Oxide
(N2O), and secondarily; Hydrofluorocarbons: HFC-23, HFC-125, HFC-134a,
HFC-143a, HFC-236fa, and Perfluorocarbons: CF4, C2F6, and Sulfur
Hexafluoride. As long as I have the info on the primary gasses...
that's fine. If you can find the secondary... more power to ya.
I'm also need a couple of other things; 1) Any news related to if and
when California or the Federal government may increase these emissions
standards, i.e. I believe the Federal gov may have a timeline to match
California standards. 2) Any summarized information presented in a
non-technical format for consumers.
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Clarification of Answer by
silviares-ga
on
13 Sep 2006 16:51 PDT
Hello again and sorry for not understanding what you were asking for before.
I found the Phase 2 Emission Standards for New Nonroad Spark-Ignition
Handheld Engines at or Below 19 Kilowatts and Minor Amendments to
Emission Requirements
Applicable to Small Spark-Ignition Engines and Marine Spark-Ignition
Engines; Final Rule.
You can find it at
http://epa.gov/otaq/regs/nonroad/equip-ld/hhsfrm/fr24267.pdf
I will copy here a summary of the tables,
Class III less that 20cc
Class IV 20cc to 50cc
Class V more than 50 cc
Class I-A less than 66 cc
Class I-B more than 66 cc less than 100 cc
TABLE 1.?PHASE 2 HC+NOX EMISSION STANDARDS FOR HANDHELD ENGINES
Engine class HC+NOX Standards (g/kW-hr) by model year
2002 2003 2004 2005 2006 2007 and later
ClassIII 238 175 113 50 50 50
Class IV 196 148 99 50 50 50
Class V 143 119 96 72
TABLE 2.?PHASE 2 CO EMISSION STANDARDS FOR HANDHELD ENGINES
Engine class CO standard (g/kWhr) Effective model year
Class III 805 2002
Class IV 805 2002
Class V 603 2004
TABLE 3.?PHASE 2 EMISSION STANDARDS FOR CLASS I?A AND CLASS I?B ENGINES
Engine class HC+NOX (g/kW-hr) NMHC+NOX CO (g/kW-hr) Effective year
Class I?A 50 * 610 2001
Class I?B 40 37 610 2001
Let me know if this is what you were looking for in the meantime I
will look for the california standards
silviares
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Clarification of Answer by
silviares-ga
on
13 Sep 2006 17:13 PDT
Hello again
I found the CARB standards summarized at
http://darwin.nap.edu/books/0309101514/html/249.html#p2000ec2c9960249001
The table is the following
TABLE 7-4 Existing CARB Small-Engine Exhaust Emissions Standards,
Adopted in 2004 (also referred to as Tier 3)
Engine Displacement HC + NOx, g/kW-h CO, g/kW-h
2005 2006 2007 2008+ 2005+
<50 cc 50 50 50 50 536
50-80 c 72 72 72 72 536a
80-225 cc 16.1 16.1 10.0 10.0 549
>225 cc 12.1 12.1 12.1 8.0 549
Source: CARB 2004f.
I am sure that browsing the CARB web site we should be able to find
the same values, but I searched for a while and their search engine is
not very efficient. Let me know if thisis enough otherwise I will look
further
silviares
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Request for Answer Clarification by
scooterguy-ga
on
20 Sep 2006 16:36 PDT
Those are good figures. I was hoping for greenhouse gas measurements
as well, but I've done some more poking around myself and it looks
like greenhouse gas measurements aren't taken on motorized scooters.
So, dead end there.
The Federal EPA numbers you've found are for handheld motors. Can you
confirm they apply to motorized scooter motors which I believe fall
under the category of non-handheld motors. If there are different
emissions standards for "non-handheld" motorized scooter motors I'll
need those... that's what I'm after.
Finally, I'm looking for any news related to if and when California or
the Federal government may increase these emissions standards, i.e. I
believe the Federal gov may have a timeline to match California
standards.
Thanks... that should be all...
scooterguy
|
Clarification of Answer by
silviares-ga
on
24 Sep 2006 18:29 PDT
Hello Scooterguy
you can find the categorization of EPA for NonRoad Engines, Equipment
and Vehicles at http://epa.gov/otaq/regs/nonroad/
The list is
Compression-Ignition Engines (farm, construction, mining, etc.)
Small Spark-Ignition Engines (lawn mowers, leaf blowers, chainsaws, etc.)
Large Spark-Ignition Engines (forklifts, generators, etc.)
Marine Diesel Engines (commercial ships, recreational diesel etc.)
Marine Spark-Ignition Engines (boats, personal watercraft, etc.)
Recreational Vehicles (snowmobiles, dirt bikes, all-terrain vehicles, etc.)
Locomotives
Aviation (aircraft, ground support equipment, etc.)
The date I gave you were for the Small Spark-Ignition Engines, you can
find the whole list of regulation for Small Ignition Engines at
http://epa.gov/otaq/equip-ld.htm
Here you will also find a document "Minor Amendments to Emission
Requirements Applicable to Small Nonroad Spark-Ignition Engines and
Marine Spark-Ignition Engines"
http://epa.gov/otaq/regs/nonroad/equip-ld/hhsfrm/f00008.htm
In that document there is a section that is titled
The weight limit in the definition of "handheld" in the small SI rule
I quote from that
"Background: Handheld equipment has historically used lightweight two
stroke engines which have much higher emissions than the heavier four
stroke engines. While the Small SI rule regulates the emissions from
both "handheld" and "nonhandheld" engines, it applies less stringent
standards to "handheld" engines than to "nonhandheld" engines. To
limit the use of two stroke engines to equipment that truly must be
"handheld," the Small SI rule provides for equipment weight limits
above which a piece of equipment is considered non-handheld and must
use an engine which meets the more stringent nonhandheld engine
standards.
Recently, a manufacturer of handheld equipment pointed out that the
current weight limits on handheld equipment prevent the use of
lightweight four stroke engines that are intended for handheld
equipment and are much cleaner than conventional two stroke engines.
Final Rule: We are not changing the weight limits, but in cases where
a piece of equipment exceeds the weight limit, the engine will still
be eligible for the handheld standards, if the excess weight is
directly attributable to the use of a four stroke engine or other
clean technology."
And in the document http://www.epa.gov/EPA-AIR/1995/July/Day-03/pr-805.txt.html
I have found
"5. Handheld Engine Qualifications
Small SI engines are categorized as either handheld or nonhandheld,
depending on the use of the equipment in which the engine is installed.
A handheld engine must meet at least one of the following four
conditions:
(1) The engine must be used in a piece of equipment that is carried
by the operator throughout the performance of the intended function(s).
(2) The engine must be used in a piece of equipment that must
operate multipositionally, such as upside-down and/or sideways, to meet
its intended function(s).
(3) The engine must be used in a one-person auger for which the
combined engine and equipment dry weight is under 20 kilograms (kg).
(4) The engine must be used in a piece of equipment, other than an
augur, for which the combined engine and equipment dry weight is under
14 kg, no more than two wheels are present, and at least one of the
following attributes is also present:
- The operator must alternately provide support or carry the
equipment throughout the performance of its intended function(s).
- The operator must provide support or attitudinal control
for the equipment throughout the performance of its intended
function(s).
- The engine is used in a hand portable generator or pump."
At this point you have to let me know if the Small Engines you are
interested in fall under the Handeheld category or not.
As you can see from http://epa.gov/otaq/equip-ld.htm
there is a Phase 3 proposal for emission standards. I looked at the
docket as they say but could not find any definitive date by which
they have to approve it.
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