[Code of Federal Regulations]

[Title 30, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 30CFR36.44]



[Page 186]

 

                       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 C_Test Requirements

 

Sec.  36.44  Maximum allowable fuel : air ratio.



    (a) When an engine is delivered to MSHA with the fuel-injection 

system adjusted by the applicant and tests of the exhaust-gas 

composition (see Sec.  36.43) show not more than 0.30 percent, by 

volume, of carbon monoxide, the applicant's adjustment of the fuel-

injection system shall be accepted. The maximum fuel : air ratio 

determined from the exhaust-gas composition shall be designated as the 

maximum allowable fuel : air ratio. The maximum liquid fuel rate (pounds 

per hour) that produces the maximum allowable fuel : air ratio shall be 

designated as the maximum allowable fuel rate for operating the 

equipment at elevations not exceeding 1,000 feet above sea level.

    (b) When the carbon monoxide content of the exhaust exceeds 0.30 

percent, by volume, only near maximum power output, the maximum fuel : 

air ratio at which carbon monoxide does not exceed 0.30 percent shall be 

calculated and designated as the maximum allowable fuel : air ratio. The 

corresponding calculated liquid fuel rate shall be designated as the 

maximum allowable fuel rate at elevations not exceeding 1,000 feet above 

sea level.

    Note: The applicant may be requested to adjust the liquid fuel rate 

during tests to determine the maximum allowable fuel : air ratio.

    (c) The maximum allowable fuel : air ratio and maximum liquid fuel 

rates shall be used to calculate a liquid fuel rate-altitude table that 

shall govern the liquid fuel rate of engines operated at elevations 

exceeding 1,000 feet above sea level.