Spark Ignition Aircraft Engine Endurance Test of Aviation ... - FAA

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LIST OF TABLES Table Page 1 AGE-85 Certificate of Analyses 3 2 Lycoming IO369-C Engine Model Specifications 3 3 Sensors and Installation Locations 4 4 Parameter Settings for Endurance Test 6 5 IO360-C Engine Maintenance Schedule 7 6 Peak Power Comparison Between AGE-85 and ISO 13 7 Best Economy Power Comparison Between AGE-85 and ISO 15 8 Exhaust Gas Summary 20 9 Best Economy and Peak Power Air-to-Fuel Ratios and Equivalence Ratios 25 10 Oil Analyses 27 11 Valve Recession Measurements 28 12 Cylinder Compression Measurements 29 vii
LIST OF ACRONYMS 100 low-lead 100LL AGE-85 Aviation-Grade Ethanol 85 ASTM American Society for Testing Materials BHP Brake horsepower BSFC Brake-specific fuel consumption BTDC Before top dead center CHT Cylinder head temperature EGT Exhaust gas temperature EPA Environmental Protection Agency FAA Federal Aviation Administration FT Full throttle IAT Inlet air temperature ISO Isooctane MAP Modified absolute pressure MON Motor octane number rpm Revolutions per minute TO Takeoff viii
Page 1 and 2: DOT/FAA/AR-06/43 Office of Aviation
Page 3 and 4: 1. Report No. DOT/FAA/AR-06/43 4. T
Page 5 and 6: LIST OF FIGURES Figure Page 1 Oil F
Page 7: 46 Posttest Connecting Rod Bearing
Page 11 and 12: more fuel volume flow. Future tests
Page 13 and 14: At the completion of the test, the
Page 15 and 16: The engine was installed in a test
Page 17 and 18: Table 4. Parameter Settings for End
Page 19 and 20: Figure 1. Oil Filter Inspection Fig
Page 21 and 22: Figure 4. Corrected Power at 2700 r
Page 23 and 24: Figure 8. Corrected Power at 2300 r
Page 25 and 26: Figure 10. Corrected BSFC vs Fuel M
Page 27 and 28: Figure 12. Corrected Power and Aver
Page 31 and 32: Table 8 provides a summary of the e
Page 37 and 38: output from all six cylinders. Pist
Page 39 and 40: The oil filter was cut open and the
Page 41 and 42: Figure 29. Top of Piston Face of Cy
Page 43 and 44: Figure 33. Bottom of Piston Face an
Page 45 and 46: Figure 39. Posttest Crankshaft Conn
Page 47 and 48: The camshaft lobes, shown in figure
Page 49 and 50: Figure 59 shows a combustion chambe
Page 51 and 52: Figure 63. Posttest Rocker Arm Show
Page 53 and 54: Visual observation of the intake tu
Page 55 and 56: Future testing should address effec
Page 57 and 58: Table A-2. Middle and Rear Main Cra
Page 59 and 60:
Table A-4. Valve Tappet Outer Diame
Page 61 and 62:
Table A-10. Top Piston Ring Side Cl
Page 63:
Table A-14. Intake Valve Seat Width
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Spark Ignition Aircraft Engine Endurance Test of Aviation ... - FAA

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