High-Octane and Mid-Octane Detonation Performance of Leaded and Unleaded Fuels in Naturally Aspirated, Piston, Spark Ignition Aircraft Engines.
(05/01/2014)
The full-scale engine detonation performance of mid-and high-octane leaded and unleaded fuels were compared at the onset of light detonation in a naturally aspirated Lycoming IO540-K and a naturally aspirated Lycoming IO320-B engine. The fuels were stressed by performing both mixture lean-outs and by increasing the manifold pressure. The high-octane fuels (100 motor octane number (MON) and above) were tested in the IO540-K engine, and the mid-octane (91 to 95 MON fuels) were tested in the IO320B engine. For this testing, the MON was determined by ASTM International (ASTM) specification D 2700 and the supercharge rich rating was determined by...
Tác giả: Atwood, D. |
Số trang: 48 |
Lĩnh vực: Năng lượng |
Năm XB: 2007 |
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High-Octane and Mid-Octane Detonation Performance of Leaded and Unleaded Fuels in Naturally Aspirated, Piston, Spark Ignition Aircraft Engines. | Số trang: 0
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The full-scale engine detonation performance of mid-and high-octane leaded and unleaded fuels were compared at the onset of light detonation in a naturally aspirated Lycoming IO540-K and a naturally aspirated Lycoming IO320-B engine. The fuels were stressed by performing both mixture lean-outs and by increasing the manifold pressure. The high-octane fuels (100 motor octane number (MON) and above) were tested in the IO540-K engine, and the mid-octane (91 to 95 MON fuels) were tested in the IO320B engine. For this testing, the MON was determined by ASTM International (ASTM) specification D 2700 and the supercharge rich rating was determined by ASTM D 909. A specially blended 100 low-lead (100 LL) aviation gasoline was tested. The 100 LL blend contained the maximum amount of allowable lead, while meeting the minimum MON of 100 and the minimum supercharge rich rating of 130 (described as 100/130 lead (L)), and met all current ASTM aviation gasoline specification D 910.
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