What is Electric Power Steering?

Antalya Airport car rental company 5s CarRental wondered what is the electro hydraulic steering? We wanted to inform you about the question. So what is electro-hydraulic steering? You can continue reading our blog for details.

What is electric power steering? To explain for those who are wondering the answer to the question; The groundbreaking and most sought after feature of its era, "power steering" has been around for a long time. Driving is no longer an exercise that requires muscle strength. When we are stuck in traffic, when we look left and right, it is very difficult to see a car without power steering. The next step in technology that makes life easier is electro-hydraulic steering systems. So what is Electro-hydraulic steering?

Traveling through increasingly narrow city streets has been a common wish for many drivers, a smoother steering wheel. Small city cars with very soft steering systems were also produced to meet this need. However, the steering wheel with this softness could not give the desired feeling of confidence on relatively long road trips and at high speeds. In the quest for smooth steering at high speeds, parking and safety and security at low speeds, electric assist provided a remedy. What is electric power steering? After the question How does electro power steering work? Let's explain.

How Does Electric Power Steering Work

The electrohydraulic steering system pumps hydraulic fluid into the system via a high-pressure electric motor. The principle of operation and many elements of the circuit are the same as in power steering. In this context, it can be seen as a combination of electric and power steering. Electro-hydraulic steering system consists of 4 main parts, these are; Steering angle sensor Steering wheel speed sensor, Vehicle speed information (provided from wheel speed sensors, Can-bus line). Engine speed information (crankshaft sensor is provided from the Can-bus line). The sensors are used to determine how difficult it will be, what kind of support the system will receive.

Data from the sensors are processed in the control unit by increasing or decreasing the current sent to the electric motor, respectively. Accordingly, the amount of oil pumped by the pump increases or decreases. This keeps the steering smooth when maneuvering at low speeds and when parking and firm at high speeds. If we briefly summarize the electrohydraulic steering system; steering angle sensor, Steering wheel speed sensor, Vehicle speed information (comes from wheel speed sensors, Can-bus line), engine speed information (crankshaft sensor, comes from Can-bus line) A control unit in the steering wheel (steering wheel ECU) system controls it does. The above sensors are used to determine the support force of the steering wheel, that is, how hard and soft the steering wheel will be when turning, and how long the system will be operated.

According to the signals of these sensors, the current sent to the electric motor is increased. or decreases, the oil pressure increases or decreases, respectively, and the pressure pumped by the pump increases or decreases. At low vehicle speed, at high speed turning, the electric pump works at maximum power, the power steering is maximized (parking manoeuvre. status). When the vehicle reaches high speeds, the sensors detect it again and the electric pump current is reduced to the lowest level, making steering difficult. Oil tank + electric motor + control unit all in one. The system is active only when the vehicle's engine is running The system hydraulic control valve assembly is part of the hydraulic cylinder; Same as power steering system.

What are the Advantages of Electro Power Steering System?

Lower fuel consumption: Saves fuel as the oil pump is electrically operated and only turns on when you turn the steering wheel. The electric motor does not mechanically draw power from the vehicle's engine. The mechanical pump in a conventional power steering system always runs from the engine (powered by the engine), regardless of whether the steering wheel is turned or not. In this regard, it is 80% more economical than conventional power steering. It provides 0.2 liters more fuel saving per 100 km. It provides maximum smoothness of the steering wheel when parking, stopping or manoeuvring. Steering (servotronic) becomes stiffer as the vehicle accelerates. As a result, it provides both a more comfortable and safer ride. Power steering also provides better steering feel. Less hydraulic oil is used, it is more environmentally friendly.

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