(a)
(1) Table 1 below specifies the diurnal
emission and design standards for small off-road engines, and equipment that
use small off-road engines, with displacements greater than 80 cc, on and after
the model years indicated, through the 2023 model year. Engines with
displacement less than or equal to 80 cc may certify to the diurnal emission
standards in Table 1 below for displacement category greater than 80 cc to less
than 225 cc through model year 2023. The standards in Table 1 shall continue to
apply to large spark-ignition engines subject to section
2433(b)(4)(B) in
Title 13, Chapter 9, Article 4.5 of the California Code of Regulations after
the 2023 model year.
Table 1
Diurnal Emission and Design
Standards
|
Effective Date Model
Year
|
Diurnal Emission
Standards (g organic material hydrocarbon
equivalent·day-1)
|
Design
Standards
|
|
Fuel Line Permeation Emission
Standard
1 (g
ROG·m-2·day-1)
|
Fuel Tank Permeation
2 Emission Standard (g
ROG·m-2·day-1)
|
Carbon Canister
3 or Equivalent Butane
Working Capacity Standard (g organic material hydrocarbon
equivalent)
|
|
Displacement Category:
Walk-Behind Mowers
|
|
> 80 cc--< 225
cc
|
|
2006
|
None
|
15
|
None
|
None
|
|
2007 and 2008
|
1.3
|
N/A
|
N/A
|
N/A
|
|
2009
|
1.0
|
N/A
|
N/A
|
N/A
|
|
Displacement
Category:
|
|
> 80 cc--< 225 cc
(except Walk-Behind Mowers)
|
|
2006
|
None
|
15
|
None
|
None
|
|
2007 through 2011
|
1.20 + 0.056 x nominal capacity
(liters)
|
15
|
2.5
|
Specified in TP-902
|
|
2012
|
0.95 + 0.056 x nominal capacity
(liters)
|
15
|
1.5
|
Specified in TP-902
|
|
Displacement Category: >=
225 cc
|
|
2006 and 2007
|
None
|
15
|
None
|
None
|
|
2008
|
1.20 + 0.056 x nominal capacity
(liters)
|
15
|
2.5
|
Specified in TP-902
|
|
2013
|
1.20 + 0.056 x nominal capacity
(liters)
|
15
|
1.5
|
Specified in TP-902
|
1 For model year 2006 only, all engines and equipment with
displacements > 80 cc--< 225 cc must comply with the fuel line permeation
emission standard. For model years 2006 and 2007, all engines and equipment
with displacements greater than or equal to 225 cc must comply with the fuel
line permeation emission standard.
2 Permeation emissions as determined by TP-901. Permeation
emissions must be measured to two significant digits.
3 Canister design requirements and the procedure for
determining butane working capacity are specified in TP-902. The Executive
Officer may designate technology equivalent to carbon canisters on a case by
case basis as part of the certification process per section
2767.
(2) On or after the model year set out in
Table 1 of this section through model year 2023, diurnal emissions from any
small off-road engine or equipment unit that uses a small off-road engine with
displacement greater than 80 cc must not exceed the diurnal emission standards
specified in Table 1 of this section.
(3) Table 2, below, specifies the hot soak
plus diurnal emission standards for small off-road engines on and after the
model years indicated, except for generator engines and >= 225 cc pressure
washer engines.
Table 2
Hot Soak Plus Diurnal Emission
Standards for Small Off-Road Engines, Except Generator Engines and >= 225 cc
Pressure Washer Engines
|
Displacement
Category
|
Effective Date Model
Year
|
Hot Soak Plus Diurnal Emission
Standards
1 (g organic material
hydrocarbon
equivalent·test-1)
|
|
<= 80 cc
|
2024
|
0.00
|
|
> 80 cc-- < 225 cc Walk-Behind
Mowers
|
2024
|
0.00
|
|
> 80 cc--< 225 cc (except Walk-Behind
Mowers)
|
2024
|
0.00
|
|
>= 225 cc
|
2024
|
0.00
|
1 The standards for hot soak plus diurnal emissions are
measured in grams of organic material hydrocarbon equivalent per test, which
includes both the hot soak test and the 24-hour diurnal test, as specified in
TP-902.
(4) On or after the
model year set out in Table 2 of this section, hot soak plus diurnal emissions
from any small off-road engine, except generator engines, must not exceed the
hot soak plus diurnal emission standard specified in Table 2 of this section.
The emission standards in Table 2 of this section are optional for model years
2022 and 2023.
(5) Table 3, below,
specifies the hot soak plus diurnal emission standards for generator engines on
and after the model years indicated.
Table 3
Hot Soak Plus Diurnal Emission
Standards for Generator Engines
|
Displacement
Category
|
Effective Date Model
Year
|
Hot Soak Plus Diurnal Emission
Standards
1 (g organic material
hydrocarbon
equivalent·test-1)
|
|
<= 80 cc
|
2024
|
0.50
|
|
2028
|
0.00
|
|
> 80 cc--< 225
cc
|
2024
|
0.60
|
|
2028
|
0.00
|
|
>= 225 cc
|
2024
|
0.70
|
|
2028
|
0.00
|
1 The standards for hot soak plus diurnal emissions are
measured in grams of organic material hydrocarbon equivalent per test, which
includes both the hot soak test and the 24-hour diurnal test, as specified in
TP-902.
(6) On or after the
model year set out in Table 3 of this section
2754, hot soak plus diurnal
emissions from any generator engine, must not exceed the hot soak plus diurnal
emission standard specified in Table 3 of this section. The emission standards
in Table 3 of this section are optional for model years 2022 and
2023.
(7) Table 4, below, specifies
the hot soak plus diurnal emission standards for >= 225 cc pressure washer
engines on and after the model years indicated.
Table 4
Hot Soak Plus Diurnal Emission
Standards for >= 225 cc Pressure Washer Engines
|
Displacement
Category
|
Effective Date Model
Year
|
Hot Soak Plus Diurnal Emission
Standards
1 (g organic material
hydrocarbon
equivalent·test-1)
|
|
>= 225 cc
|
2024
|
0.70
|
|
2028
|
0.00
|
1 The standards for hot soak plus diurnal emissions are
measured in grams of organic material hydrocarbon equivalent per test, which
includes both the hot soak test and the 24-hour diurnal test, as specified in
TP-902.
(8) On or after the
model year set out in Table 4 of this section
2754, hot soak plus diurnal
emissions from any >= 225 cc pressure washer engine, must not exceed the hot
soak plus diurnal emission standard specified in Table 4 of this section. The
emission standards in Table 4 of this section are optional for model years 2022
and 2023.
(b) An
applicant certifying engines or equipment to comply with the diurnal emission
standards under this section shall do the following through model year 2023:
(1) Submit a determination in the
certification application that running loss emissions are controlled from being
emitted into the atmosphere. The Executive Officer must approve the
determination for an Executive Order of Certification to be issued. Approval by
the Executive Officer is not required if actively-purged carbon canisters
meeting the requirements of this article are used.
(2) Provide test data in the certification
application showing that all fuel lines meet the permeation requirement of 15
grams of ROG per square meter of surface area of the surface in contact with
fuel per day when tested with LEV III Certification Gasoline using test
procedure SAE J1737, SAE J30, SAE J1527, or, only for fuel lines with inner
diameter 4.75 mm or less, SAE J2996, which are incorporated herein by
reference. The permeation testing must be conducted at 40°C, or higher, and
ambient pressure. The fuel defined in 40 CFR Part
1060.515(a)(2) or CE10 may be
used as an alternative test fuel. Alternatively, applicants can submit the
Executive Order number approving the fuel lines pursuant to section
2767.1 of this Article.
(c) An applicant certifying engines
or equipment to comply with the diurnal emission standards under this section
shall also do one of the following through model year 2023:
(1) Provide diurnal emission test data for
the engine or equipment model in the evaporative family that is expected to
exhibit the highest diurnal emission rate relative to the applicable diurnal
emission standard, in accordance with TP-902; or
(2) Provide test data in the certification
application showing that the fuel tank and carbon canister meet the applicable
design standards listed in Table 1 of this section. Alternatively, an applicant
can submit the Executive Order numbers approving the fuel tank and carbon
canister pursuant to section
2767.1 of this Article.
(d) For model year 2024 and
subsequent model years, an applicant certifying engines or equipment to comply
with the hot soak plus diurnal emission standards under this section shall
provide diurnal and hot soak emission test data for the engine or equipment
model in the evaporative family that is expected to exhibit the highest hot
soak plus diurnal emission rate relative to the applicable hot soak plus
diurnal emission standard, in accordance with TP-902.
(e) For model year 2020 and subsequent model
years, if carbon canisters are used in an evaporative emission control system,
they must be installed in a way that prevents exposing the carbon to water or
liquid fuel.
(f) For model years
2020 through 2023, all fuel lines must be securely connected to prevent fuel
leakage throughout the useful life of the evaporative emission control system.
Fuel line assembly testing shall be conducted in accordance with the Fuel Line
Assembly Tensile Test in section 5.4 of ANSI/OPEI B71.10-2013 or the Fuel line
connection tensile test in section 5.5 of ANSI/OPEI B71.10-2018, as applicable
per ANSI/OPEI B71.10-2013 sections 1 and 4.4 or ANSI/OPEI B71.10-2018 sections
1 and 4.2.1.
(g) For model year 2024
and subsequent model years, all fuel lines must be securely connected to
prevent fuel leakage throughout the useful life of the evaporative emission
control system. Fuel line assembly testing shall be conducted in accordance
with the Fuel line connection tensile test in section 5.5 of ANSI/OPEI
B71.10-2018, as applicable per ANSI/OPEI B71.10-2018 sections 1 and
4.2.1.
(h) An applicant certifying
engines or equipment to comply with the hot soak plus diurnal emission
standards under this section shall submit a determination in the certification
application that running loss emissions are controlled from being emitted into
the atmosphere. The Executive Officer must approve the determination for an
Executive Order of Certification to be issued. Approval by the Executive
Officer is not required if actively-purged carbon canisters meeting the
requirements of this Article are used. Approval by the Executive Officer is not
required for engines with displacement less than or equal to 80 cc. To receive
Executive Officer approval, applicants shall demonstrate that running loss
emissions are controlled from being emitted into the atmosphere by following
the procedure in section 2.4 of TP-902.
