Hydraulics 102 - Hydraulic components in depth

The introduction lesson to the section on parameters of positive displacement pumps

One of the main specifications of a positive displacement pump - flow.

Quick lesson on pump effort (or pump head). I didn't want to correlate pump head with it so much because of the nature of positive displacement pumps and the nature of the fluid which they are pumping.

One of the most important aspects of engineering - efficiency! 

In this lesson we will be talking about the power parameters when it comes to pumps.

One of the things we want to prevent in our system - cavitation.

Characteristics and relationships between the parameters of positive displacement pumps.

Regulating the parameters.

In this lesson we will be learning about radial piston motors, the motors that can output the most torque and the motors that are used whenever we need a strong, powerful and durable unit.

For homework checkout the article that I posted in the resource part so you know what stator vanes are for in rotary vane motors! 

In this lesson we will be learning about gear motors. One of the most used units in hydraulics. They are cheap, reliable and easy to manufacture.

For your homework I want you to think about what influences torque when we are talking about axial piston motors. How much will the torque be if the angle of the swash plate is zero? What are the parameters that influence torque? 

In the end of the lesson I want you to think about the equation we wrote that is used to calculate the torque using the pressure, the projected radial area of the sides of the gear teeth and the distance from the pivot point. Think about all the parameters that influence torque in that equation. What would having a bigger gear diameter change for the torque of the motor? 

A quick introduction lesson to go through the parameters which we will cover in this section.

In this lesson we will be taking a look at the flow parameter. When we say flow of a hydraulic motor we mean the flow that enters the hydraulic motor.

In this lesson we will be learning about the hydraulic motor power parameter. Power is very important when you are speculating your system. Here we are going to define a couple of different power parameters that we have when we talk about these energy converters.

In this lesson we will be talking about hydraulic motor torque.

In this lesson we will be learning about the efficiency of hydraulic motors.

Introduction lesson to get you into hydraulic cylinders before we discuss some more detailed info about them.

Be ready this is going to be a long lesson on various types of hydraulic cylinders. I didn't want to split it into smaller lessons because there isn't anything too mentally demanding in the lesson, just divisions and types of cylinders.

Detailed ins and outs of the hydraulic cylinder and all of its parts.

Short introduction lesson in which we only mention what are the work parameters of hydraulic cylinders which are going to be covered in the next lessons.

A short lesson covering the flow of the work fluid that enters the hydraulic cylinder.

May the force be with us on this one! This is the lesson where we learn about all of the different forces that occur. The effective force which we get from providing the pressure inside the cylinder is not the only force that acts on the cylinder! 

In this lesson we will be looking at some basic equations for effort, power and efficiency. We will cover what different power parameters mean and how do we differentiate them from one another.

Lesson on choosing the right parameters of the hydraulic cylinder. When we design the machine we have to make sure that the hydraulic cylinder meets all the conditions, in this lesson we will see what equations are used when finding the parameters which we need to choose the cylinder from the manufacturers catalog.

Quick introduction lesson for the new section in which we will talk about hydraulic circuits.

Learn the difference between open loop and closed loop hydraulic circuits. I took the liberty of taking this lesson from my other course, that is why the presentation theme is different.

Where does the hydraulic oil go when it finishes pushing the piston in the cylinder? Where do we pour in fresh hydraulic oil and where does the oil that our gear pump pumps come from? 

This is a longer lesson, it covers the various materials from which the hydraulic pipelines can be made of and it covers the types of fittings used in hydraulics.

Flexible circuit hoses are used a lot in hydraulic systems, in this lesson we will take a look at how they are made and how they are connected in the circuit.

Machines like agricultural tractors, excavators, loaders have a way of supplying auxiliary hydraulic systems with hydraulic power. Quick release coupling is a way of connecting those auxiliary systems (on interchangeable tools like agricultural tools, grabbers for excavators etc.) in this lesson we will learn how this coupling works.

In this lesson we will be learning about hydraulic accumulators, devices used in hydraulic circuits if we need a fast bump in flow and pressure, if we want to control the pulsations and etc.

Because this lesson is going to have a little bit of calculations and solving problems, I've decided to cut it into two parts so it isn't long and that you don't lose focus when you need it the most. I suggest not making bigger breaks from the course when doing these two lessons.

The second part of the hydraulic accumulator sizing lesson in which we do some calculations. I suggest you take out a pen and paper and follow the steps I do.

This is the lesson which is the introduction to the world of hydraulic valves and components used to control the parameters of our hydraulic systems/machines.

This is an introduction lesson to directional control valves which are going to be covered in the next few lessons.

Lesson on mono-block and sectional directional control valves.

In this lesson we will cover the types of discrete valves and also we will talk about overlap inside of DCVs.

In this lesson we will be covering the various types of pressure control valves.

In this lesson we will be covering the various types of flow control valves.

Congratulations on finishing the course! This is the end of the course for now, if the course turns out to have a lot of people interested in it I will add another section with some examples of circuits with control components.