The three major parts of a car are: engine, chassis, and gearbox.

1. Engine

An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (gasoline engines, etc.), external combustion engines (Stirling engines, steam engines, etc.), electric motors, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy. The engine applies to both the power generating unit and the entire machine including the power unit (eg gasoline engine, aircraft engine). The engine was first born in the United Kingdom, so the concept of the engine is also derived from English, and its original meaning refers to the kind of "mechanical device that generates power".

The body is the skeleton that constitutes the engine, and is the installation base of the various mechanisms and systems of the engine. All the main parts and accessories of the engine are installed inside and outside it, and bear various loads. Therefore, the body must have sufficient strength and rigidity. The body group is mainly composed of cylinder block, cylinder liner, cylinder head and cylinder gasket and other parts.

2. Automobile chassis

The automobile chassis is composed of four parts: drive train, driving train, steering train and braking train. The role of the chassis is to support and install the car engine and its components and assemblies, form the overall shape of the car, and accept the power of the engine to make the car move and ensure normal driving.

3. Gearbox

It is divided into two types: manual and automatic. The manual transmission is mainly composed of gears and shafts, and the variable torque is generated through different gear combinations; while the automatic transmission AT is composed of a hydraulic torque converter, a planetary gear, a hydraulic pitch change system and a hydraulic The control system is composed of hydraulic transmission and gear combination to achieve variable speed and torque.

The functions are: 1. Change the transmission ratio; 2. Under the condition that the rotation direction of the engine remains unchanged, the car can run backwards; power output.

What are the categories of auto parts?

What are the categories of auto parts?

1. Engine accessories

Cylinder head, body, oil pan, etc.

Crank connecting rod mechanism: piston, connecting rod, crankshaft, connecting rod bush, crank bush, piston ring, etc.

Valve mechanism: camshaft, intake valve, exhaust valve, rocker arm, rocker arm shaft, tappet, push rod, etc.

Intake system: air filter element, throttle valve, intake resonator, intake manifold, etc.

Exhaust system: ternary catalyst, exhaust manifold, exhaust pipe

2. Transmission accessories

Flywheel, pressure plate, clutch plate, transmission, gear shift control mechanism, drive shaft (universal joint), hub, etc.

3. Brake accessories

Brake master cylinder, brake wheel cylinder, vacuum booster, brake pedal assembly, brake disc, brake drum, brake pad, brake oil pipe, ABS pump, etc.

4. Steering accessories

Steering knuckle, steering machine, steering column, steering wheel, steering rod, etc.

5. Driving accessories

Steel rims, tires

Suspension

Front axle, rear axle, swing arm, ball joint, shock absorber, coil spring, etc.

6. Ignition accessories

Spark plugs, high voltage wires, ignition coils, ignition switches, ignition modules, etc.

7. Fuel accessories

Fuel pump, fuel pipe, fuel filter, fuel injector, oil pressure regulator, fuel tank, etc.

8. Cooling accessories

Water pump, water pipe, radiator (water tank), radiator fan

9. Lubrication accessories

Oil pump, oil filter element, oil pressure sensor

10. Accessories for electrical instrumentation

Sensors, lamps, ECUs, switches, air conditioners, wiring harnesses, fuses, motors, relays, horns, actuators

Lamps decorative lights, anti-fog lights, interior lights, headlights, front turn signals, side turn lights, rear combination lights, license plate lights, all kinds of bulbs

Switch class

Combination switch, glass lift switch, temperature control switch, etc.

Air conditioner

Compressor, condenser, drying bottle, air conditioning pipe, evaporation box, blower, air conditioning fan

sensor class

Water temperature sensor, intake pressure sensor, intake temperature sensor, air flow meter, oil pressure sensor, oxygen sensor, knock sensor, etc.

11. Other accessories: airbags, seat belts, etc.