The Development of the Octane Number Tests and their Impact on Automotive Fuels and American Society

Abstract

Modern automobiles and fuels were shaped heavily by the development of the octane number tests. These tests were developed between 1929 and 1932 to quantify a fuel’s anti-knock performance in spark-ignition engines. Since knock imposes limits on the maximum engine compression ratio, which correlates to engine performance, the anti-knock property of a fuel is a crucial design constraint. Prior to the development of the octane number tests, engines were designed to run at very low compression ratios to avoid knock, significantly limiting their performance. The octane number tests created standards that allowed for better engine development and advancements in fuel technology. Engines could now be designed to handle a specific octane number of fuel allowing for increased performance. The demand for better performing engines resulted in an increase in the average fuel octane number from 50 to 75 during this period, with the Great Depression and World War II setting the stage for this advancement. These advancements in fuel technology played a crucial role in the survival of the American automobile industry during the Great Depression, the Allied success in World War II, in addition to creating the ‘American obsession’ with powerful automobiles. This paper provides an overview of knock, a historical summary on the development of the octane number tests, the corresponding advancements in fuel technology, and the implications of these advancements on American society.

Keywords:

• gasoline
• automobiles
• World War II
• the Great Depression

Notes

1. P. Brennan, ‘FC Cincy faces Charleston Battery’, Cincinnati Enquirer, 25 March 2016, p. 1.

2. Retrieved from Urban Dictionary: <http://www.urbandictionary.com/define.php?term=high+octane>.

3. Retrieved from Power Bar Website: <http://www.powerbar.com>.

4. J. B. Heywood, Internal Combustion Engine Fundamentals (New York: McGraw-Hill, 1988), p. 452.

5. Ibid, pp. 452–6.

6. V. Mittal, B. Revier and J. B. Heywood, ‘Phenomena that Determine Knock Onset in Spark-Ignition Engines’, Society of Automotive Engineers Technical Paper (No. 2007-01-0007), p. 2.

7. C. F. Taylor, The Internal Combustion Engine in Theory and Practice, Volume 2: Combustion, Fuels, Materials, Design (Cambridge, MA: MIT Press, 1985), pp. 39–40.

8. J. B. Heywood, p. 452; ibid., p. 50.

9. V. W. Page, The Model T Ford Car, Its Construction, Operation and Repair (New York: Henley Publishing Co, 1917), p. 52.

10. Ward’s AutoWorld, ‘2016 Wards 10 Best Engines’, 25 January 2016, p. 4.

11. J. B. Heywood, p. 170.

12. Ibid., p. 85.

13. C. F. Taylor, p. 44.

14. J. B. Heywood, p. 470.

15. ‘Amazing Autos’, Time Magazine, April 1929.

16. E. L. Marshall, “Early Liquid Fuels and the Controversial Octane Number Tests,” The Piston Engine Revolution (Manchester: Newcomen, 2011), p. 222.

17. ‘Double Power Gasoline Possible When Knock Goes,’ Science News Letter, 38 (1940), 360–1.

18. E. L. Marshall, p. 224.

19. C. S. Draper, ‘Pressure Waves Accompanying Detonation in the Internal Combustion Engine,’ Journal of the Aeronautical Sciences, 5 (1938), 1–3.

20. T. A. Boyd, ‘Pathfinding in Fuels and Engines,’ Horning Memorial Lecture, p. 3.

21. E. L. Marshall, p. 225.

22. B. Kovarik, ‘Henry Ford, Charles Kettering, and the “Fuel of the Future”,’ Automotive History Review (Spring 1998), 7–27.

23. Ibid., p. 9.

24. S. T. Pees, ‘Knock Knock,’ OilHistory.com, 2004.

25. T. A. Boyd, p. 4.

26. J. L. Kitman, ‘The Secret History of Lead’, The Nation, 3 July 2000.

27. ‘Knocking Gas’, Time Magazine, July 1930.

28. J. Gunnell, Standard Catalog of Chevrolet, 1912–2003 (Iola: Krause Publications, 2011), pp. 9–24.

29. H. R. Ricardo, ‘The Influence of Various Fuels on the Performance of Internal Combustion Engines,’ Automobile Engineer 11 (1921), 51.

30. Waukesha Engine Division, Dresser Industries, Inc., ‘An International Historic Mechanical Engineering Landmark: The Waukesha CFR Fuel Research Engine,’ Bulletin No. 1163, June 1980.

31. American Society for Testing Materials, ‘Standard Test Method for Research Octane Number of Spark-Ignition Fuel’, Annual Book of ASTM Standards, vol. 5.05, 2003, p 19.

32. V. Mittal and J. B. Heywood, ‘The Shift in Relevance of RON and MON to Knock Onset in Modern SI Engines Over the Last 70 years’, Society of Automotive Engineers Technical Paper (No. 2009-01-2622), p. 1.

33. ‘Octane Rating of Gasoline Not Wholly Dependable,’ Science News Letter, 22 (1932), 296.

34. F. Seeber, ‘Modern Methods of Fuel Testing’, Technical memorandums of the National Advisory Committee for Aeronautics. Vol. 16, No 8, August 20, 1939.

35. H. Rose, ‘Are All Gasolines Alike,’ Wall Street Journal. August 26, 1941; ProQuest Historical Newspapers The Wall Street Journal.

36. G. Edgar, ‘Measurement of Knock Characteristics of Gasolines in Terms of a Standard Fuel,’ Industrial and Engineering Chemistry, 19 (1928), 145.

37. E. L. Marshall, p. 226.

38. D. B. Brooks, ‘A Review of the Development of Reference Fuel Scales for Knock Rating’ (SAE Paper 460230, presented at the SAE Annual Meeting, Detroit, MI, January 7–11, 1946).

39. C. F. Taylor, p. 151.

40. J. Gunnel, pp. 22–38.

41. R. Cleveland, ‘Gain Noted in Engines’, New York Times, 2 February 1936.

42. J. L. Kitman, op. cit.

43. ‘Gas and Supergas’, Time Magazine, November 1941.

44. B. Brown and D. Barnard, ‘How Will the 100-Octane Aviation Gasoline Program Affect Post-war Motor Gasoline,’ Society of Automotive Engineers Journal, 52 (1944), 3 .

45. B. Kovarik, pp. 12.

46. Consumer Guide, Cars of the Classic 30’s (Lincolnwood, IL: Publications International Ltd, 2005).

47. M. A. Bernstein, ‘Why the Great Depression was Great: Toward a New Understanding of the Interwar Economic Crisis in the United States,’ in The Rise and Fall of the New Deal Order, ed. by S. Fraser and G. Gerstle (Princeton: Princeton University Press, 1980), p. 40..

48. Ibid., p. 40.

49. M. A. Bernstein, The Great Depression: Delayed Recovery and Economic Change in America, 1929–1939 (Cambridge: Cambridge University Press, 1980), pp. 59.

50. W. Kaempffert, ‘High Power from Super-Gasoline’, New York Times, 24 January 1943.

51. R. Weidenhammer, ‘A National Fuel Policy,’ The Journal of Land & Public Utility Economics, 19 (1943), 127–40.

52. S. Cohen, V for Victory: America's Home Front During World War II (New York: Pictorial Histories Publishing Company, 1991), p. 12.

53. ‘Oil Refiners Meet Needs for Higher Quality Gasolines,’ Wall Street Journal. May 27, 1940.

54. ‘Factories for Allies’, Time Magazine, December 1942.

55. Ibid.

56. B. Brown, op. cit.

57. T. Palucka, ‘The Wizard of Octane,’ Invention & Technology, Winter 2005.

58. ‘Axis Cracker’, Time Magazine, February 1943.

59. T. Palucka, op. cit.

60. ‘Low Octane Count Follows OPM Decree,’ Nation Business, January 1942; 30, 1; ABI/INFORM Global, p. 68.

61. ‘Gas and Supergas’, Time Magazine, November 1941.

62. T. Palucka, op. cit.

63. Ibid.

64. C. Chayne, ‘Post-War Passenger Car Design’, Society of Automotive Engineers Technical Paper (No. 440049), p. 1.

65. ‘Axis Cracker’, op. cit.

66. ‘The Horsepower Race’, Time Magazine, February1960