The main function of the car body is to protect the driver and form a good aerodynamic environment. From a formal point of view, the body structure of Petrol Car is mainly divided into non-bearing type, load-bearing type and semi-bearing type. Body parts include hood, roof, trunk lid, fenders, front panels, etc.
Roof: The cover on the top of the car. The roof is not a very important component for the overall rigidity of the body, which is why the roof allows for a sunroof. From a design point of view, what is important is how to make a smooth transition with the front and rear window frames and the intersection with the pillars, so as to obtain the best visual sense and minimum air resistance. Of course, for safety reasons, the roof must also have a certain strength and rigidity. Generally, a certain number of reinforced beams are added under the roof, and thermal insulation lining materials are laid on the inner layer of the roof to prevent the transmission of external temperature and reduce the transmission of noise during vibration.
Trunk lid: The trunk lid also has outer panels and inner panels, and the inner panel has reinforced ribs. The trunks of some Geely Car, known as "two-and-a-half" cars, extend upward to include the rear windshield, which increases the opening area and forms a door. Therefore, it is also called the back door, which not only maintains the sedan shape but also facilitates the storage of items.
Petrol Car fender: The fender is the outer body panel that covers the wheels. It is named because the shape and position of this part of the old car body resemble the wings of a bird. According to the installation position, it is divided into front fender and rear fender. The front fender is installed at the front wheel, and it is necessary to ensure the maximum limit space when the front wheel rotates and jumps, and the rear fender does not cause the problem of wheel rubbing when rotating. However, for aerodynamic reasons, the rear fenders protrude slightly outwards in an arched shape. Currently, some Geely Car fenders are integrated with the body.
Front fender: The front fender refers to the partition between the engine compartment and the cabin. It is connected to the floor and front pillars and is installed under the cover of the front fender. There are many openings on the front panel, which can be used to operate cables, tie rods, pipes, wire harnesses, etc., and can also be used to match the installation positions of pedals, machine columns and other components.
Body electronic control devices include engine control systems, chassis control systems, and body electronic control systems. These electronic control systems are composed of sensors, MPUs, actuators, and dozens or even hundreds of electronic components.
Vehicle electronic equipment includes: batteries, generators, regulators, starters, ignition systems, instruments, lighting devices, audio devices, wipers, etc.