1.EPS
■ What electric power steering system EPS
EPS is the English acronym of Electric Power Steering, i.e., electric power steering system. Electric power steering system is the development direction of the automobile steering system. The system provided by the electric power steering unit directly, eliminating the need for hydraulic power steering systems necessary power steering pump, hoses, hydraulic fluid, and a belt pulley mounted on the engine, saving energy and protecting the environment. Further, with a simple adjustment, and assembly can provide flexible steering characteristics under various conditions. It is precisely because of these advantages, electric power steering system as a new steering technology, the challenge we are very well-known, already has 50 years of history of the hydraulic steering system.
When the driver performs steering in the steering wheel, the steering wheel torque sensor detecting a steering torque and the magnitude of the voltage signal is conveyed to the electronic control unit, the electronic control unit detects the rotation torque sensor from the voltage signal, a rotational direction and a vehicle speed signal, etc., sent commands to the motor controller, the motor output corresponding to the magnitude and direction of steering torque, thereby generating auxiliary power. When the vehicle is not turning, the electronic control unit does not issue an instruction to the motor controller, the motor does not operate.
■ technical advantages
1, energy saving since the engine is running, the hydraulic pump is always active, so that the whole engine hydraulic steering system fuel consumption increased by 3% to 5%, while the EPS battery as energy to the motor-driven element, can work independently of the engine, EPS consumes little direct engine fuel. EPS there is no fuel leak hydraulic power steering system, EPS through electronic control, almost no pollution to the environment, but also reduces fuel consumption.