Basics of Hydraulic System in Engineering
Thursday, January 09, 2014
Often, the fluid utilized to transfer the motion is typically a type of oil. Oil is in nature incompressible and is very efficient for the transfer of force and motion. A critical point to take into account is that a hydraulic system cannot contain any air. If air bubble appears in the system then the force applied to the piston would be used to compress the air bubble, instead of going on to move the subsequent piston. As a result, it affects the efficiency of the hydraulic system.
Let’s visualize the hydraulic system closely. A simple example of a basic piston-driven hydraulic system is the braking system of our typical car (refer Figure 2). When we hit/pressed the break to slow or stop the car, the brake pedal is depressed. It then pushes on the piston in the master cylinder of the brake. Other four slave pistons in each wheel actuate to press the brake pads against the brake rotor to slow or stop the car.
Principally, these systems normally involve equipment meant to handle heavier weights. This demands more physical strength as well as higher operating pressure for the system. Such hydraulic system operating pressure ranges from a few hundred pounds per square inch (PSI) to several thousand pounds per square inch.
Hydraulic systems offer advantages over other methods of power transmission. For instance, hydraulic systems have a simple design. In many cases, complicated mechanical linkages can be replaced with a few pre-engineered hydraulic components. These systems are also more flexible. The location of component in a system is extremely versatile. Instead of sedentary mechanical elements, flexible pipes and hoses used in these systems eliminate location problems. Additionally, these systems are also much more smooth and quiet while in operation. With high efficiency and minimum friction or interference, these systems keep the cost of power transmission at a minimum.
When working with hydraulic system and its associated fluid, we cannot afford to settle for less or mediocre quality. We must use one with high quality produced/delivered by reputable companies. Numerous companies are available in the market which provides hydraulic system and extensive areas of fluid technology expertise. The company I worked with before used hydraulic and lubricant oils from Hydac for most of the equipments and machineries. It was from them I learned more about the principle and application of hydraulic system and fluid technology. I must say I truly appreciate the knowledge, skill and experience delivered during their visit and discussion. It made me a better and more mature engineer.
Normal human being wise, me and my family just moved to a new, bigger house, 4 days after I defended my Ph.D in the 2 hour VIVA session. Moving to a new house means more time is required to prepare the house for proper decent living. Not to mention transporting clothes and basic kitchen utilities from old house to the new house. Luckily we don't have to shift all the old furniture from the old house to the new house. The new house is furnished with new furniture.
- Published more in ISI journal - I'm not revealing the numbers. It will be my own secret.
- Published more in SCOPUS journal - I'm not revealing the numbers. It will be my own secret.
- Secure at least 1 research grant - for me to fund and run my research.
- Have some post graduate students - I'm not revealing the numbers. It will be my own secret.
- Write useful books - I'm not revealing the numbers. It will be my own secret. You will know soon.
- Secure at least 1 consultancy/industrial project.
- Attend at least 1 international conference outside my own country.
- Participate at least once in research exhibition/contest.
- Learn and understand more about thermodynamics modelling using ### software.
- I would like to contribute the best that I can to give positive impact (motivate) my students and perhaps others, so that they can become better person, and contribute to their family, society and world.
How about you? I would like to read your goals. Why not share them in the comment section or in the Chemical Engineering World Facebook page? The more the merrier.
p/s: I began part of the new year with my Samsung Note 2 suddenly not working. Feeling very sad.
I’m Zaki. I used to be a project, process and chemical engineer. Few years ago I successfully became a Chartered Engineer (IChemE) and Professional Engineer (BEM). I'm now employed as a chemical engineering educator/researcher/consultant. Hope you like reading my blog. I welcome any feedback from you. My email: zaki.yz[alias]gmail.com. TQ!