40 CFR Part 86, Appendix XV to Part 86 - Procedure for Determining an Acceptable Exhaust Regeneration Durability-Data Test Schedule for Diesel Cycle Vehicles...Oxidizer Systems Certifying to the Provisions of Part 86, Subpart R

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View PDF at GPO Pt. 86, App. XV
Appendix XV to Part 86—Procedure for Determining an Acceptable Exhaust Regeneration Durability-Data Test Schedule for Diesel Cycle Vehicles Equipped With Periodically Regenerating Trap Oxidizer Systems Certifying to the Provisions of Part 86, Subpart R
1. Select exhaust system mileage test points for proposed (prop) schedule.
2. Calculate the sums of the squares corrected to the mean of the system mileages at the proposed test points:
Aprop = [∑(Xp)2 − ((∑Xp)2 / Np))prop
Where:
Xp = Individual mileages at which the vehicle will be tested.
Np = Total number of tests (including before and after maintenance tests).
(Subscript “p” refers to proposed test schedule).
3. The exhaust system mileage tests points at 5,000, 25,000, 50,000, 75,000, and 100,000 miles will be designated as the standard (std) test schedule.
4. Calculate the sums of square corrected to the mean of the standard tests schedule:
Bstd = [∑(Xs)2 − ((∑Xs)2 / Ns))std
Where:
Xs = Individual mileages at which the vehicle will be tested.
Ns = Total number of regeneration emission tests.
(Subscript “s” refers to standard test schedule)
5. Refer to table I and determine tp at (Np − 2)prop degrees of freedom and ts at (Ns − 2)std degrees of freedom.
6. If (Aprop)1/2 ≥ tp / ts × (Bstd)1/2 the proposed plan is acceptable.
Table I to Appendix XV
Degrees of freedom (N-2) t
1 6.314
2 2.920
3 2.353
4 2.132
5 2.015
6 1.943
7 1.895
8 1.860
9 1.833
10 1.812
11 1.796
12 1.782
13 1.771
14 1.761
15 1.753
[62 FR 31264, June 6, 1997]

Title 40 published on 2013-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-04-28; vol. 79 # 81 - Monday, April 28, 2014
    1. 79 FR 23414 - Control of Air Pollution From Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on June 27, 2014. The incorporation by reference of certain publications listed in this regulation is approved by the Director of the Federal Register as of June 27, 2014.
      40 CFR Parts 79, 80, 85, 86, 600, 1036, 1037, 1039, 1042, 1048, 1054, 1065, and 1066

Title 40 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 86 after this date.

  • 2014-04-28; vol. 79 # 81 - Monday, April 28, 2014
    1. 79 FR 23414 - Control of Air Pollution From Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on June 27, 2014. The incorporation by reference of certain publications listed in this regulation is approved by the Director of the Federal Register as of June 27, 2014.
      40 CFR Parts 79, 80, 85, 86, 600, 1036, 1037, 1039, 1042, 1048, 1054, 1065, and 1066