How are all automotive parts integrated together?

The integration of automotive part is like assembling building blocks, connecting circuits, and adding energy drinks. Various components are precisely assembled on an assembly line, ultimately becoming a mobile steel partner.

I. Underlying Skeleton: Body Frame (Car Skeleton)

Stamping and Welding: Steel plates are pressed into shapes such as doors and roofs, and assembled into a cage-like skeleton using over 3000 weld points for protection in collisions.
Using Different Strength Steels: The A-pillar uses hot-formed steel (the hardest), while the rear trunk uses soft steel (energy-absorbing), like the balance of strength and flexibility in Tai Chi.

II. Powertrain Integration: Engine + Transmission (Heart + Stomach)

Engine Mounting: The engine is fixed to the frame with rubber mounts to absorb vibrations; otherwise, the steering wheel would vibrate like a massager.
Driveshaft Connection: The transmission output shaft is inserted into the driveshaft universal joint to transmit power to the rear wheels (rear-wheel drive) or front wheels (front-wheel drive).

III. Chassis System Mounting: Chassis Components (Legs and Feet)

Suspension Assembly: The upper end of the shock absorber is screwed onto the frame, and the lower end connects to the control arm, which in turn connects to the wheel hub—forming a "wheel seesaw" to filter bumps.
Brake Integration: The brake caliper acts like pliers, clamping the brake disc. The fuel line connects to the brake pedal in the driver's cabin; pressing the pedal is like squeezing the pliers to slow down.

IV. Nervous System Wiring: Circuits + Sensors (Brain Nerves)

Wiring Harness Assembly: Bundling wires into a main line (like a tree trunk), branching out into smaller harnesses to connect to headlights and audio systems (like tree branches). The entire wiring harness, when stretched out, could circle a football field three times.
Sensor Interconnection: Wheel speed sensors detect slippage → the signal is transmitted to the computer → the ESP system applies the brakes to revive the vehicle, reacting 10 times faster than the human brain.

V. Breathing and Circulation System: Fluid Lines (Car Blood Vessels)

Fuel/Cooling Lines: The fuel tank → fuel pump → fuel injectors form a "fuel supply channel," while the water tank → water pump → engine block form a "cooling tea."
Leak-proof sealing: Rubber hoses are secured to metal connections with clamps; leaks of oil or coolant will render the vehicle unusable.

VI. Exterior Packaging: Interior and exterior trim (like a coat)

Bolt + Clip Fixing: The front bumper is secured to the frame with 8 bolts; interior panels have concealed plastic clips—they'll break if you try to force them.
Acoustic Encapsulation: Sound insulation cotton is applied to the firewall, and recycled cotton is stuffed into the door panels; otherwise, the engine noise will be like a concert right next to your ear.

VII. Vehicle Tuning: Final Break-in (Character Development)

Four-Wheel Alignment: Adjusting the toe angle ensures the car travels in a straight line; adjusting the camber angle prevents uneven tire wear.
ECU Calibration: Engineers reprogram the system to determine throttle response, allowing even small-displacement cars to respond precisely to the pedals.