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Fluid Power

Fluid Power. ENGR 8-4, Lesson 2 Hydraulic and Pneumatic Systems. Written by Roland Williams. Big Idea. ENGR-TS-3: The students will develop an understanding of how humans interact with systems. Critical Knowledge/Elements. Operate technological systems Maintain technological systems

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Fluid Power

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  1. Fluid Power ENGR 8-4, Lesson 2 Hydraulic and Pneumatic Systems Written by Roland Williams

  2. Big Idea • ENGR-TS-3: The students will develop an understanding of how humans interact with systems.

  3. Critical Knowledge/Elements • Operate technological systems • Maintain technological systems • Constructing technological systems • Design technological systems

  4. Essential Question What are hydraulic and pneumatic systems?

  5. Word Wall • Fluid • Fluid Power • Hydraulic Systems • Pneumatic Systems • Boyle’s Law • Pascal’s Principle • Pressure • Actuators • Compressor • Mechanical Advantage

  6. Fluid Power Review • What is a fluid power system? • What is the definition of a fluid?

  7. How does a fluid power system work?

  8. Fluid power systems work by force being applied to a fluid (gas or liquid) , then the energy of the fluid, under pressure, transfers its energy to a mechanically device to perform work.

  9. Pressure • The amount of force distributed over a unit of area, usually expressed in pounds per square inch. Pressure = Force (F) Area (A)

  10. Boyle’s Law • The volume of gas varies as the pressure increases, whereas a liquid’s volume remains the same under pressure, provided the temperature remains constant.

  11. Boyle’s Law 2F Liquid

  12. Pascal’s Principle • A pressure applied to a confined fluid at rest is transmitted with equal intensity throughout the fluid.

  13. Pascal’s Principle Force All have equal pressure

  14. By understanding Boyle’s Law and Pascal’s Principle, we can now understand how fluid power systems are used to create a mechanical advantage.

  15. Mechanical Advantage • The increase in force gained by using a machine.

  16. Mechanical Advantage using Fluid Power 10 : 1 advantage

  17. Hydraulics and Pneumatics Part I As you watch the video, write down your definition of hydraulic systems, and make a list of as many of the different uses of hydraulics as you can as described in the video. Click here to watch video: http://www.youtube.com/watch?v=YlmRa-9zDF8

  18. Hydraulics and Pneumatics Part I Review • What is a hydraulic systems?

  19. Hydraulic Systems • Fluid power systems that use oil or another liquid.

  20. Hydraulics and Pneumatics Part I Review • What are some of the uses of hydraulics as described in the video?

  21. Hydraulic System Components (actuator) (storage tank) Source: Dept of Navy-Fluid Power Training Manual

  22. Hydraulics and Pneumatics Part II As you watch the video, write down your definition of pneumatic systems, and make a list of as many of the different uses of pneumatics as you can as described in the video. Click here to watch video: http://www.youtube.com/watch?v=UuK3ESGgbqk

  23. Hydraulics and Pneumatics Part II Review • What is a pneumatic systems?

  24. Pneumatic Systems • Fluid power systems based on the use of air or another gas.

  25. Hydraulics and Pneumatics Part I Review • What are some of the uses of pneumatics as described in the video?

  26. Pneumatic System Components 1. Air tool (actuator)2. Air Hose 3/8”3. Oiler4. Pressure Regulator5. Filter6. Shut Off Valve7. Lead Hose8. Coupler body and connector9. Drain daily10. 1/2”or larger pipe and fitting11. Air Dryer (storage tank/reservoir)12. 1” or larger pipe and fitting13. Air Compressor (pump)14. Auto Drain15. Drain daily (actuator) (valve) (storage tank) (compressor/pump) Source: www.cartool.com.cn

  27. Compressor • A device that converts mechanical force and motion into pneumatic fluid power.

  28. Actuators • A device that converts fluid power into mechanical force and motion.

  29. Source: Dept of Navy-Fluid Power Training Manual

  30. Essential Question What are hydraulic and pneumatic systems?

  31. Fluid Power (conclusion) ENGR 8-4, Lesson 2 Hydraulic and Pneumatic Systems

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