1. Hydraulics

2. An area of engineering science that deals with liquid flow and pressure

3. Hydraulic Fluids Liquid pumped through a hydraulic system Petroleum-based or synthetic oil Serve four major functions: 1. Power transmission 2. Lubrication of moving parts 3. Sealing of spaces between moving parts 4. Heat removal Relatively Incompressible!

4. Hydrostatics - a “No Flow” Scenario “Static” means “stationary” or “non flowing” in a hydraulic system Hydraulic systems are considered static when there is no flow

5. Hydrodynamics – a “Flow” scenario “Dynamic” means “moving” or “flowing” in a hydraulic system Hydraulic systems are considered dynamic when there is flow

6. Flow and Pressure Flow, Q volume flow rate amount of fluid moving through system per unit time Pressure, P force per unit area of fluid moving through a system

7. A Hydraulic System

8. Tank/Reservoir Storage device which is open and not pressurized Filter

9. Pumps Positive displacement pump (Gear Pump): a specific amount of fluid passes through the pump for each rotation

10. Linear Actuators Single Acting

11. Rotary Actuator Single-Vane

12. Applications Robotics Oil systems in vehicles (e.g. brakes) Presses Heavy equipment Wood splitter Aircraft control systems

13. The Hydraulic Trainer Motor Pump Return line from reservoir Pressure line Pressure Regulator In-line Pressure Gauge Flow Control Valve Check Valve Actuators Directional Control Valve Inline-Tee Return line Connections Supply line Connections