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Mobile Hydraulics

Mobile Hydraulics

This course introduces the physics of applied hydraulics, hydraulic components, and applications. It explains how a simple system functions, including symbols and basic formulas. It discusses the components in the hydrostatic drive transmission and examines open- versus closed-center circuits and the functional description of forward, neutral, and reverse drive circuits. It concludes with the subject of proportional control, including types of proportional-control valves.

TPC Training Systems is authorized by IACET to offer 0.7 CEUs for this program.

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Lesson 1 - Introduction to Hydraulics

Covers the essential physics of applied hydraulics, introducing the basics of hydraulic components and their applications, and explaining how a simple hydraulic system functions. A discussion of symbols, along with application of basic hydraulic formulas, enhances learning.

Topics:

Course Introduction, Applied Physics, Force and Motion, Work, Torque, Power, Horsepower, Conservation of Energy, Flow Principles, Flow Rate, Fluid Velocity, Pascal's Law, Series, Resistance, Parallel Resistance, Load Pressure, Pressure Drop, System Pressure, Flow and Pressure, Basic Components, Fluids, Reservoirs, Pumps, Actuators, Flow Control, Directional Control, Pressure Control, Fluid Filtration, Hydraulic Systems, Industrial System, Mobile System, Schematics

Lesson 2 - Hydraulic Pumps

Identifies the various types of pumps and how they function. Gives an understanding of applicable control mechanisms, how to identify pump schematic symbols, and applying formulas.

Topics:

Fixed Displacement, External Gear, Crescent, Geroter, Axial Piston, Radial Piston, Vane, High Performance Vane, Double Pumps, Tandem Pumps, Variable Displacement, Axial Piston, Variable Vane, Radial Piston, Pump Controls, Pressure Compensated, Load Sense, Symbols, Pump Symbols

Lesson 3 - Hydraulic Actuators

Explains how to identify the various types of hydraulic cylinders, the different types of hydraulic motors, how they function, and their associated schematic symbols. Goes on to discuss the basic hydraulic formulas associated with calculating force and torque, as they relate to hydraulic actuators.

Topics:

Introduction, Hydraulic Cylinders, Tie Rod Cylinders, Mill Cylinders, Welded Cylinders, Telescoping Cylinders, Rotary Actuators, Hydraulic Motors, Motor Torque and Speed, External Gear, Geroller, Geroter, Axial Piston, Bent Axis Piston, Radial Piston, Actuator Symbols , Cylinder Symbols, Moto Symbols

Lesson 4 - Hydraulic Valves

Covers the various types of hydraulic control valves and how they function. Identifies applicable control valve circuits and hydraulic valve schematic symbols.

Topics:

Pressure Control Valves, Direct Acting Pressure Valves, Pilot Operated Pressure, Valves, Relief Valves, Remote Pressure Control, Venting Relief Valve, Reducing Valve, Reducing Circuit, Sequence Circuit, Counterbalance Valve, Double CB Valve, Counterbalance, Circuit, Brake Circuit, Unloading Circuit, Directional Control Valves, Spool Porting, Spool Positions, Spool Centers, Open Vs. Closed Center, Manual Actuator, Mechanical Actuator, Pneumatic Actuator, Hydraulic Actuator, Solenoid Actuated, 3-Position Direct Acting, 2-Position Direct Acting, Pilot Operated Valves, Pilot Valve Chokes, Poppet Directional Valves, Mobile Monoblock Valves, Multiple Spool Monoblock, Mobile, Sectional Valves, Multiple Spool Sectional Valves, Power Beyond Application, Ball Valves, Flow Control Valves, Gear-Type Flow Divider, Spool-Type Flow Divider, Priority, Flow Divider, Meter-In Flow Control, Meter-Out Flow Control, PC Flow Control, Double Flow, Control, Check Valves, Inline Check Valve, Pilot Operated Check Valves, Prefill Valves, Shuttle Valves, Hydraulic Valve Symbols, Pressure Control Symbols, Flow Control Symbols, Directional Control Symbols, Check Valve Symbols

Lesson 5 - Hydraulic Modular Valves

Explains the various types of modular valve applications. It goes on to discuss their functionality and associated symbols.

Topics:

Introduction, Stack Valves, Manifold Application, Schematic Arrangement, Cartridge Valves, Pressure Control, Flow Control, Directional Control, Logic Valves, Pressure Control, Directional Control, Flow Control

Lesson 6 - Hydraulic Accumulators

Identifies types of accumulators with their corresponding schematic symbol. Also explains how accumulators function, their applications, and basic accumulator maintenance requirements.

Topics:

Introduction, Accumulator Application, Piston Type, Bladder Type, Safety Isolation Block, Applications, Functionality, Pump Uploading, Emergency Operation, Pilot Pressure

Lesson 7 - Hydraulic Fluid Conditioning

Covers the various types of fluid conditioning components with their corresponding schematic symbols as well as an understanding of their proper applications. Also introduces terminology associated with fluid cleanliness, such as micron, beta ratio, and ISO code.

Topics:

Introduction, Terminology, Filtration, Micron, Beta Ratio, ISO Code, Filter Applications, Filter Operation, Filter Breather, Pressure Filter, Return Filter, Kidney Loop Filtration, Reservoirs, Industrial, L-Shaped, Overhead, Vertical Assemblies, Mobile, Temperature Control, Tank Heaters, Tube and Shell Heat Exchange, Air Cooled Heat Exchanger, Mobile Heat Exchanger, Symbols, Filter Symbols, Reservoir Symbols, Heat Exchangers

Lesson 8 - Hydraulic Conductors and Connectors

Shows how to identify the various types of fluid power conductors and connectors. Explores how their application works together to deliver fluid throughout the system.

Topics:

Introduction, Conductors, Hose, Tubing, Pipe, Port Connectors, NFPT, Sae ORB, 4-Bolt Flange, Tube Ends, 37 Degrees, ORS, Compression, Specialty, Connectors, Quick Disconnects, Minimus Connector, Flow Considerations, Conductor Sizing, Fluid Velocity

Lesson 9 - Sensors and Switches for Hydraulics

Describes the operating principles of limit switches and inductive, capacitive, ultrasonic, and photoelectric sensors.

Topics:

Introduction, Flow and Pressure, Pressure Gauge, Flow Meter, Electromechanical Switches, Pressure Switch, Limit Switch, Temperature Switch, Level Switch, Proximity Switches, Inductive, Capacitive, Optical, Transducers, Pressure, Temperature

Lesson 10 - Hydrostatic Transmissions

Discusses the functionality and applications of the charge pump, the charge pressure relief valves, the high pressure reliefs, and the servo controller in the hydrostatic drive transmission. Further examines open versus closed center circuits and the functional description of forward, neutral, and reverse drive circuits.

Topics:

Introduction, Introduction to HST, Open Circuits, Closed Circuits, Hydrostatic Drive Schematic, Drive Circuits, Forward, Neutral, Reverse

Lesson 11 - Hydraulic Proportional Control Valves

Introduces the fundamentals of proportional control, identifying the various types of proportional control valves and how they function, the applicable control valve circuits, and hydraulic valve schematic symbols.

Topics:

Introduction, Introduction to Proportional Controls, Theory of Operation, Proportional Solenoids, Control Amplifier, Proportional Valve Applications, Directional Control, Feedback Control, Pressure Control, Flow Control, Mobile Proportional Control, Pulse Width Modulation, Communication, Mobile Proportional Valves, Circuit Types, Open Loop Circuit, Closed Loop Circuit

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