California Code of Regulations › Title 13 - Motor Vehicles › Division 3 - Air Resources Board › Chapter 15 - Additional off-Road Vehicles and Engines Pollution Control Requirements › Article 1 - Evaporative Emission Requirements for off-Road Equipment › Section 2754 - Diurnal and Hot Soak Plus Diurnal Emission and Design Standards

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(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.