[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR36.26]
[Page 173]
TITLE 30--MINERAL RESOURCES
CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
PART 36--APPROVAL REQUIREMENTS FOR PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT--Table of Contents
Subpart B--Construction and Design Requirements
Sec. 36.26 Composition of exhaust gas.
(a) Preliminary engine adjustment. The engine shall be submitted to
MSHA by the applicant in such condition that it can be tested
immediately at full load and speed. The preliminary liquid-fuel-
injection rate shall be such that the exhaust will not contain black
smoke and the applicant shall adjust the injection rate promptly to
correct any adverse conditions disclosed by preliminary tests.
(b) Final engine adjustment. The liquid fuel supply to the engine
shall be adjusted so that the undiluted exhaust gas shall contain not
more than 0.30 percent, by volume, of carbon monoxide or 0.20 percent,
by volume, of oxides of nitrogen (calculated as equivalent nitrogen
dioxide, NO2) under any conditions of engine operation
prescribed by MSHA when the intake air mixture to the engine contains
1.50.1 percent, by volume, of Pittsburgh natural gas. 3
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3 Investigation has shown that for practical purposes,
Pittsburgh natural gas (containing a high percentage of methane) is a
satisfactory substitute for pure methane in these tests.
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(c) Coupling or adapter. The applicant shall provide the coupling or
adapter for connecting the engine to MSHA's dynamometer.
Note: Preferably this coupling or adapter should be attached to the
flywheel of the engine.
Clutches, transmissions, or torque converters ordinarily are not
required in the coupling train.