# 40 CFR 86, 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,

There are 4 Updates appearing in the Federal Register for 40 CFR 86. Select the tab below to view, or View eCFR (GPOAccess)
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 2012-07-01

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.

• 2012-11-15; vol. 77 # 221 - Thursday, November 15, 2012
1. 77 FR - 2017 and Later Model Year Light-Duty Vehicle Greenhouse Gas Emissions and Corporate Average Fuel Economy Standards
GPO FDSys XML | Text
DEPARTMENT OF TRANSPORTATION, ENVIRONMENTAL PROTECTION AGENCY, National Highway Traffic Safety Administration
40 CFR Parts 85, 86, and 600

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

Title 40 published on 2012-07-01

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

• 2013-01-25; vol. 78 # 17 - Friday, January 25, 2013
1. 78 FR 5347 - Denial of Reconsideration Petition on Model Year 2012-2016 Light Duty Vehicle Greenhouse Gas Emissions Standards
GPO FDSys XML | Text
ENVIRONMENTAL PROTECTION AGENCY
Denial of petition for reconsideration.
This action is effective on January 25, 2013.
40 CFR Parts 85, 86, 600