Hydraulic Systems and Controls

  • John B. Liljedahl
  • Paul K. Turnquist
  • David W. Smith
  • Makoto Hoki


This chapter discusses hydraulic systems, their control systems, and some of the principles of tractor hitches.


Bulk Modulus Control Valve Hydraulic System Hydraulic Cylinder Steering System 
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  1. Clyde, A. W. Agr. Engr., Apr. 1949.Google Scholar
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  3. Merritt, H. Hydraulic Control Systems. John Wiley & Sons, New York, 1967.Google Scholar
  4. Wittren, R. A. “Power Steering for Agricultural Tractors.” ASAE Distinguished Lecture Series No. 1, presented at winter meeting of ASAE, Dec. 17, 1975.Google Scholar

Suggested Reading

  1. Blackburn, J., G. Reethof, and J. S. Shearer. Fluid Power Control. The M.I.T. Press, Cambridge, MA 1960.Google Scholar
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  4. Deere & Co. Hydraulics, Fundamentals of Service, 3d ed. John Deere Service Publications, Moline, IL.Google Scholar
  5. Di Stefano, J. J. et al. Feedback and Control Systems. Schaum Publishing Co., New York, 1967.Google Scholar
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  7. Fundamental Hydraulics-Components and Circuitry. The Penton Publishing Co., Cleveland, 1971.Google Scholar
  8. Henke, Ross. “Understanding Hydraulic Servosystems.” Machine Design, Apr. 20, 1972 to May 18, 1972 (in 3 parts).Google Scholar
  9. Herzan, Gene. “Quick Action Couplings: The Tractor to Implement Hydraulic Interface.” ASAE Distinguished Lecture Series, no. 8, Dec. 14, 1982. American Society of Agricultural Engineers, St. Joseph, MI.Google Scholar
  10. Julian, A. P. “Design and Performance of a Steering Control System for Agricultural Tractors.” J. Agric. Eng’g Res., vol. 16, no. 3, 1971, pp. 324–336.CrossRefGoogle Scholar
  11. Martin, H., and T. Keating. “Calculating Hydraulic Servo Frequency Response.” Hydraulics & Pneumatics, July 1974.Google Scholar
  12. McCloy, D., and H. R. Martin. The Control of Fluid Power. John Wiley & Sons, New York, 1973.Google Scholar
  13. Morling, Roy W. “Agricultural Tractor Hitches and Analysis of Design Requirements.” ASAE Distinguished Lecture Series, no. 5, Dec. 12, 1979. American Society of Agricultural Engineers, St. Joseph, MI. “Reducing the Operating Noise of Industrial Hydraulic Systems.” Parker Hannifin, Cleveland, Article Preprint PC-1, Oct. 1972.Google Scholar
  14. Stecki, J. S., and Peter Dranfield. “Finding and Fixing Hydraulic Noise Sources.” Machine Design, no. 13, 1975.Google Scholar
  15. Vennard, John K., and Robert T. Street. Elementary Fluid Mechanics, 5th ed., SI Version. John Wiley & Sons, New York, 1975.Google Scholar
  16. Wittren, R. “Techniques for Reducing Hydraulic System Overheating.” Machine Design, July 1962.Google Scholar

Copyright information

© Van Nostrand Reinhold 1989

Authors and Affiliations

  • John B. Liljedahl
    • 1
  • Paul K. Turnquist
    • 2
  • David W. Smith
    • 3
  • Makoto Hoki
    • 4
  1. 1.Agricultural Engineering DepartmentPurdue UniversityUSA
  2. 2.Agricultural Engineering DepartmentAuburn UniversityUSA
  3. 3.Technical Center Deere & CompanyUSA
  4. 4.Department of Agricultural MachineryMie UniversityTsuJapan

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