Design of a Vacuum Independent, Power Assisted Brake by Wire System using a Novel Electro-Magnetic Brake Booster

Abstract

With an increasing demand in the market towards electrical vehicles through technological advancements in the automotive field like, automated driving assistance that which have resulted in higher safety requirements and new innovations in the braking system, such as vacuum-independent, automated braking, and regenerative braking, play a crucial role in the vehicle's comfort and economics. However, the classic vacuum brake booster is no longer capable of meeting these requirements. A revolutionary Electro-Magnetic brake booster system is suggested in this research; this system is aimed to perform the function of boosting or enhancing the driver's pedal power despite remaining dependent on the vacuum source. Such an Electro-magnetic brake booster is mainly composed of an Electro-magnetic core plate, a ferromagnetic actuating plate and an ECU. It consumes electrical energy and converts into magnetic force to attract the metallic actuating plate, which is mechanically coupled to the pushrod of the master cylinder. However, the power required for braking (developing pressure in a master cylinder) is provided by the electrical power source. The core plate is associated with a pole as the electromagnet cores are mounted on one side of it. By incorporating a pedal pressure sensor linked to the ECU, which can control the electric power input to this core plate. Thus, the magnetic force developed is used in pulling the Actuating plate. In turn, it builds up the required pressure in the master cylinder. This novel Electro-Magnetic brake booster can be a better solution to satisfy the drawbacks of the existing brake boosters such as complexity in the structure and mechanism. Thus, this brake booster can be joined in substantial vehicles, autos and can be utilized as driver brake assistance for future Electric Vehicles by making a few upgrades in the ECU and the servo.