How Does Electric Power Steering Work?

Are you tired of feeling like you're wrestling with your car's steering wheel every time you hit a turn or manoeuvre your vehicle? 

Thankfully, modern technology has made it easier than ever to enjoy effortless steering with the introduction of electric power steering systems

At Fulcrum Suspension, we understand the importance of having a smooth ride and an easy-to-handle steering system for your vehicle. 

In this article, we'll delve into the mechanics of electric power steering and highlight its many benefits over traditional hydraulic power steering systems.

Electric Power Steering Systems

An electric power steering system uses an electric motor mounted on the steering column to provide steering assistance. The motor is controlled by a control module that receives inputs from sensors that detect steering angle, steering input, and vehicle speed. 

The control module then sends signals to the electric motor to provide steering assistance as needed. The system is powered by the vehicle's electrical system and does not require hydraulic pressure like traditional power steering systems.

EPS Working Mechanism

There are three main types of electric power steering systems: column-assist, rack-assist, and pinion-assist. 

In a column-assist system, the electric motor is located on the steering column, providing steering assistance through the steering gear. In a rack-assist system, the electric motor is mounted on the steering rack, and in a pinion-assist system, the motor is mounted on the steering pinion.

Column-assist systems are the most common type of electric power steering system. In these systems, the electric motor is located on the steering column, and it provides steering assistance through the steering gear. 

Rack-assist systems are less common and have the electric motor mounted on the steering rack. These systems are usually found in vehicles with a mid-engine layout, where the steering column is too short for a column-assist system. Pinion-assist systems are typically used in small cars with limited space in the engine compartment.

Advantages of EPS

Electric power steering has many advantages over traditional hydraulic power steering systems. One of the major benefits of EPS is that it is lighter and more fuel-efficient than hydraulic systems. 

Since EPS does not rely on hydraulic fluid or a pump, it requires less maintenance than hydraulic systems, resulting in cost savings over time. EPS also provides greater stability and more precise steering assistance, particularly at high speeds, where it can help improve handling and reduce the effort needed to steer the vehicle.

EPS also allows engineers to tailor the level of steering assistance for different driving conditions. For example, EPS can provide more assistance at low speeds for easier parking or less assistance at high speeds for greater stability. 

EPS can also provide consistent levels of power assistance, regardless of engine speed, unlike hydraulic power steering, which requires a pump driven by the engine.

Disadvantages of EPS

The main disadvantage of EPS is the lack of tactile feedback some drivers prefer in hydraulic power steering systems. Hydraulic power steering provides more steering feel and feedback, which some drivers prefer. 

In contrast, EPS provides a more disconnected feeling, and some drivers may find it less engaging or enjoyable to drive. Additionally, EPS can be more expensive to repair or replace than hydraulic systems, and there have been some concerns about reliability issues. 

In the event of a failure, EPS may require the replacement of the entire system, whereas hydraulic power steering may only require the repair of a single component, such as a power steering pump.

Maintenance and Troubleshooting

Maintaining an electric power steering system involves checking the power steering fluid level regularly and inspecting the electrical connections for signs of wear or damage. 

Common problems with electric power steering systems include sensor malfunctions, motor failures, and hydraulic fluid leaks. 

If you suspect a problem with your EPS system, it is recommended to seek professional help to diagnose and repair the issue.

Experience Effortless Steering with Electric Power Steering Systems from Fulcrum Suspension

Electric power steering is a major advancement in the automotive world, offering many benefits over traditional hydraulic power steering systems. 

EPS provides a consistent level of power assistance, greater stability, and a more precise steering feel, all while being more fuel-efficient and requiring less maintenance. 

Whether you're driving a high-performance sports car or an off-road 4WD, electric power steering can provide you with the effortless and precise steering you need for a comfortable and safe ride. 

At Fulcrum Suspension, we are committed to helping you get the most out of your vehicle's steering system. If you're considering upgrading your steering system to electric power steering, or if you need maintenance or repairs on your existing system, contact us today or visit us in-store. 

Our team of experts will be happy to assist you and ensure that your vehicle's steering system is in top-notch condition.

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