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  • Other Sources  (4)
  • 1930-1934  (4)
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  • 1
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    Unknown
    Increasing the Air Charge and Scavenging the Clearance Volume of a Compression-Ignition Engine (1934)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The object of the investigation presented in this report was to determine the effects of increasing the air charge and scavenging the clearance volume of a 4-stroke-cycle compression-ignition engine having a vertical-disk form combustion chamber. Boosting the inlet-air pressure with normal valve timing increased the indicated engine power in proportion to the additional air inducted and resulted in smoother engine operation with less combustion shock. Scavenging the clearance volume by using a valve overlap of 145 degrees and an inlet-air boost pressure of approximately 2 1/2 inches of mercury produced a net increase in performance for clear exhaust operation of 33 percent over that obtained with normal valve timing and the same boost pressure. The improved combustion characteristics result in lower specific fuel consumption, and a clearer exhaust.
    Type: NACA-TR-469
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Basic requirements of fuel-injection nozzles for quiescent combustion chambers (1931)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report presents test results obtained during an investigation of the performance of a single-cylinder, high-speed, compression-ignition test engine when using multiple-orifice fuel-injection valve nozzles in which the number and the direction of the orifices were varied independently.
    Type: NACA-TN-382
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Unknown
    Performance of a High-Speed Compression-Ignition Engine Using Multiple Orifice Fuel Injection Nozzles (1930)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report presents test results obtained at the Langley Memorial Aeronautical Laboratory of the National Advisory Committee for Aeronautics during an investigation to determine the relative performance of a single-cylinder, high-speed, compression-ignition engine when using fuel injection valve nozzles with different numbers, sizes, and directions of round orifices. A spring-loaded, automatic injection valve was used, centrally located at the top of a vertical disk-type combustion chamber formed between horizontally opposed inlet and exhaust valves of a 5 inch by 7 inch engine.
    Type: NACA-TN-344
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Unknown
    The Design and Development of an Automatic Injection Valve with an Annular Orifice of Varying Area (1931)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The purpose of this investigation was to provide an automatic injection valve of simple construction which would produce a finely atomized oil spray of broad cone angle and would fulfill the requirements of fuel injection in aircraft oil engines. The injection valve designed has only six parts - i. e., two concentric nozzle tubes flared at one end, two body parts, and two nuts. Analysis and engine tests indicate that the fuel spray from this type of injection valve has characteristics which reduce the time lag of autoignition and promote efficient combustion in high-speed oil engines.
    Type: NACA-TR-341
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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