Power Steering

Power Steering

Everyone has heard the phrase “Power steering”. Or at least the steering wheel; that familiar with that circular thing that is used to control the movement of a vehicle; even small children when demonstrating driving always find a circular material to turn.

But then, have you ever wondered how that small circular piece of metal (nowadays it has plastic, leather, buttons and all sorts) manages to turn the tyres and do it easily?

Let’s Hit-The-Garage and disassemble: “Power Steering”

Power Steering

The Power steering is a powered steering – okay that’s saying the same thing. It is the augmenting of the steering effort applied by the driver to make turning the wheels much easier.

It was patented by Robert E. Twyford on April 3, 1900, but Chrysler Corporation introduced the first commercially available passenger car power steering system on the 1951 Chrysler Imperial under the name “Hydraguide”.

Types of Power Steering Systems

  1. Hydraulic system
  2. Electro-Hydraulic System
  3. Electric system
  4. Drive by wire

Hydraulic power steering systems

They work by using a hydraulic (oil pressure) system to multiply force applied to the steering wheel inputs to the vehicle’s steered (usually front) road wheels.

The hydraulic pressure typically comes from a gerotor or rotary vane pump driven by the vehicle’s engine. A double-acting hydraulic cylinder applies force to the steering gear, which in turn steers the roadwheels. The steering wheel operates valves to control flow to the cylinder.

In other words, when you turn the steering, the engine drives the pump, and the pump sends pressurized oil to the steering gear, and the gear turns the wheels

The more torque the driver applies to the steering wheel and column, the more fluid the valves allow through to the cylinder, and so the more force that is applied to steer the wheels.

In other words, the more you turn the steering, the more pressurized oil is sent to the steering gear and the easier it is to turn the wheels.

Electro-hydraulic System

Electro-hydraulic systems, sometimes abbreviated EHPS, and also sometimes called “hybrid” systems, use the same hydraulic assist technology as standard systems, but the hydraulic pressure comes from a pump driven by an electric motor instead of a drive. Electric power assisted steering (EPS/EPAS) or motor-driven power steering (MDPS) uses an electric motor to assist the driver of a vehicle belt at the engine.

Drive by wire

Power steering systems (such as those in the largest off-road construction vehicles) have no direct mechanical connection to the steering linkage; they require electrical power.Systems of this kind, with no mechanical connection, are sometimes called “drive by wire” or “steer by wire”, by analogy with aviation’s “fly-by wire“.In this context, “wire” refers to electrical cables that carry power and data, not thin wire rope mechanical control cables.


Electric power assisted steering (EPS/EPAS) or motor-driven power steering (MDPS) uses an electric motor to assist the driver of a vehicle .

These systems have an advantage in fuel efficiency because there is no belt-driven hydraulic pump constantly running, whether assistance is required or not, and this is a major reason for their introduction.Another major advantage is the elimination of a belt-driven engine accessory, and several high-pressure hydraulic hoses between the hydraulic pump, mounted on the engine, and the steering gear, mounted on the chassis.

This greatly simplifies manufacturing and maintenance. By incorporating electronic stability control, these systems can instantly vary in torque assist levels to aid the driver in corrective maneuvers.

My power steering, My ease

It’s never a good thing for your power steering to fail you in the middle of a trip.

Follow these five steps to ensure a stress free driving!

Check your power steering fluid level

Power steering fluid is essential to the operation of the entire system. The pump creates pressure so that the fluid can apply that pressure to the piston. Most times, problems arise because a leak has developed and the fluid is low. You may start to feel that the steering wheel is harder to turn and hear a squealing noise when you turn the wheel.

Being caught on the road with no power steering is never fun. We always suggest that you check the fluid level before you go on a long trip and after you return. Otherwise, checking the power steering fluid when you get an oil change is a good practice to follow

2. Check the high and low-pressure hoses

Two hoses transport the power steering fluid. One supplies the fluid with high-pressure and the other returns it to the fluid tank with low-pressure. It’s common for leaks to develop in these hoses. They should be checked periodically to make sure they aren’t rubbing against each other and protective coverings are intact.

3. Change the filter every year

Some drivers aren’t even aware there’s a power steering fluid filter. You should change this filter every year or when your owner’s manual dictates. It’s always important to keep the fluid clean and free flowing to reduce wear-and-tear on your pump. The amount of contaminants that find their way into the fluid would amaze you.

4. Inspect the power steering fluid

Changing the filter and keeping your fluid contaminant free also protects the quality of the fluid and how well it works. You can try to determine the quality of the fluid at home by taking a sample, inspecting the color and checking for pieces of metal and other dirt and grime. The darker the fluid, the worse off it is. If the fluid is dark and has particles floating around in it, the fluid should be flushed and replaced

5.Replace the pump if needed

Low fluid levels and dirty fluid can impact your pump in a negative way. If you start to hear a whirring or whining sound as you drive, it could be a sign that your pump is about to fail. It’s always smart to have it checked by an automobile mechanic and replaced if need be. There are much more expensive power steering repairs that could follow a bad pump if not repaired.

Stay tuned to iknowmotors.com while you enjoy a stress free driving.


I didn’t start out as a car lover, all i wanted to do was excel in mechanical engineering, however, driving and working on performance vehicles changed the scene for me. I love performance, and I’m sure you do too.

This Post Has 30 Comments

  1. Olukayode Samuel

    Good to be back.
    We miss you.

  2. Oluwaseunayofunmi


  3. Vincentnut

    Hello. Good Job!

  4. I simply want to tell you that I’m beginner to blogs and actually enjoyed your web blog. Likely I’m want to bookmark your website . You really have excellent well written articles. Bless you for sharing your web page.

  5. Onpassive Canada

    Aw, this was an incredibly good post. Taking the time and actual effort to make a very good article… but what can I say… I hesitate a lot and never manage to get nearly anything done.

  6. bare

    This web site really has all of the info I wanted about this subject and didn’t know who to ask.

  7. bare

    Having read this I believed it was extremely enlightening. I appreciate you taking the time and energy to put this content together. I once again find myself personally spending a significant amount of time both reading and leaving comments. But so what, it was still worth it!

  8. bare

    Greetings! Very useful advice within this article! It is the little changes which will make the largest changes. Thanks a lot for sharing!

  9. bare

    I enjoy reading through an article that can make people think. Also, many thanks for permitting me to comment.

  10. bare

    Saved as a favorite, I love your website.

  11. bare

    Hello there, I do think your website might be having internet browser compatibility problems. When I look at your website in Safari, it looks fine however, if opening in IE, it’s got some overlapping issues. I merely wanted to give you a quick heads up! Aside from that, great site!

  12. Auto Financing

    You are so cool! I don’t suppose I have read anything like this before. So good to discover someone with some original thoughts on this topic. Seriously.. thank you for starting this up. This site is something that is needed on the internet, someone with a little originality.

  13. Dwayne Blumhardt

    Nice post. I learn something totally new and challenging on sites I stumbleupon everyday. It’s always useful to read through articles from other writers and use something from other websites.

  14. That is a really good tip particularly to those fresh to the blogosphere. Brief but very precise information… Thanks for sharing this one. A must read post!

  15. StreamCloud

    You need to take part in a contest for one of the best websites on the web. I’m going to highly recommend this web site!

  16. bandar togel

    That is a good tip particularly to those new to the blogosphere. Simple but very precise information… Many thanks for sharing this one. A must read article!


    Aw, this was an exceptionally nice post. Taking the time and actual effort to produce a great article… but what can I say… I put things off a lot and never manage to get nearly anything done.

  18. cbd for anxiety

    Your style is really unique compared to other people I have read stuff from. Thanks for posting when you’ve got the opportunity, Guess I will just book mark this page.

  19. cbd for pain

    Spot on with this write-up, I seriously feel this web site needs far more attention. I’ll probably be returning to see more, thanks for the info!

  20. cbd capsules

    An intriguing discussion is definitely worth comment. I believe that you need to write more about this topic, it may not be a taboo subject but usually people don’t discuss these issues. To the next! Kind regards.

  21. cbd gummies

    Good information. Lucky me I recently found your site by chance (stumbleupon). I’ve book-marked it for later!

  22. There is definately a lot to learn about this issue. I love all of the points you made.

  23. buy cbd

    Very good post. I will be facing many of these issues as well..

  24. Great post! We are linking to this particularly great content on our website. Keep up the good writing.

  25. s12888

    You ought to take part in a contest for one of the highest quality sites on the net. I will recommend this blog!

  26. s128

    I wanted to thank you for this great read!! I absolutely enjoyed every bit of it. I have you saved as a favorite to check out new things you post…

  27. download apk s128

    Having read this I believed it was rather informative. I appreciate you spending some time and effort to put this informative article together. I once again find myself spending a significant amount of time both reading and posting comments. But so what, it was still worth it!

  28. Jonathon

    Hello to every one, the contents existing at this site are truly awesome for people knowledge, well, keep up the nice work fellows.

Leave a Reply