What is a car composed of?

1 Answers
CameronDella
07/29/25 4:50pm
A car is generally composed of four basic parts: the engine, chassis, body, and electrical equipment. A car is primarily a non-track, non-catenary vehicle that relies on its own power for propulsion and has four or more wheels. Car Engine: The engine is the power unit of a car. It consists of the engine block, crankshaft and connecting rod mechanism, valve train, cooling system, lubrication system, fuel system, and ignition system (diesel engines do not have an ignition system). Engines can be categorized by fuel type into gasoline and diesel engines, and by working method into two-stroke and four-stroke engines, with most engines being four-stroke. Car Chassis: The chassis serves to support and mount the car engine and its various components and assemblies, forming the overall shape of the car. It receives power from the engine to enable movement and ensure normal operation. The chassis consists of four parts: the transmission system, running gear, steering system, and braking system. Car Body: The body is mounted on the frame of the chassis and is used to accommodate the driver, passengers, or cargo. The bodies of sedans and buses are usually of a unitary structure, while truck bodies typically consist of a cab and a cargo compartment. The main functions of the car body are to protect the driver and create a good aerodynamic environment. A well-designed body not only enhances performance but also reflects the owner's personality. In terms of structure, car bodies are mainly divided into body-on-frame and unibody types. Car Electrical Equipment: This mainly includes the battery, generator, voltage regulator, starter, ignition system, instruments, lighting devices, audio equipment, windshield wipers, etc.
Was this review help?
5
2
Share
More Forum Discussions

How Many Cylinders Does a Rotary Engine Equivalent to?

If it is a single-rotor engine, then this engine actually has only one cylinder; if it is a dual-rotor engine, then this engine has two cylinders. There is only one car manufacturer in the world that uses rotary engines, and that is Mazda. Below is the relevant introduction: 1. The working principle of rotary engines: The working principle of rotary engines is different from that of traditional piston reciprocating engines. A rotary engine has a triangular rotor inside, and this type of engine is more efficient than piston reciprocating engines, with a smaller size and lighter weight. Using this engine can lower the vehicle's center of gravity, significantly improving the car's handling. 2. Models using rotary engines: Mazda has some sports cars that use rotary engines, such as the RX7 and RX8. The RX7 was not introduced for sale in the domestic market. 3. Introduction to the RX8: The RX8 uses a 1.3-liter dual-rotor engine, which delivers 231 horsepower and a maximum torque of 211 Nm. The engine's maximum power is achieved at 8,200 rpm, and the maximum torque is at 5,500 rpm. This engine is equipped with direct fuel injection technology and uses an aluminum alloy cylinder head and block. It is paired with either a 6-speed automatic transmission or a 6-speed manual transmission.
6
2
Share

What is the difference between semi-synthetic and fully synthetic engine oil

The differences between semi-synthetic and fully synthetic engine oil are as follows: 1. Different base oils: Semi-synthetic oil uses Group III base oil; Fully synthetic oil is a mixture of Group III, IV, and V base oils; 2. Different replacement intervals: Fully synthetic oil has a longer replacement cycle; 3. Different applicable temperature ranges: Fully synthetic oil has a wider applicable temperature range; 4. Different costs: Fully synthetic oil has higher manufacturing costs and is more expensive; 5. Different vehicle applicability: Semi-synthetic oil is suitable for economy cars, while fully synthetic oil is more suitable for higher-end models with more demanding requirements.
15
4
Share

What Causes the Anti-Skid Light to Stay On?

The reasons why the anti-skid light stays on are as follows: It may be due to slippery road conditions causing the ABS to activate, thus triggering the light. Another possibility is a malfunction in the ABS pump, leading to signal transmission errors and false alarms by the computer. Below is an introduction to the anti-skid light: 1. Meaning: The anti-skid light is a general term for systems or programs designed to enhance vehicle handling performance while effectively preventing loss of control when the car reaches its dynamic limits. Electronic stability programs can improve vehicle safety and handling. 2. Methods to turn off the anti-skid light: (1) Restart the engine and briefly press the ESP OFF button on the vehicle to check if the ESP was accidentally turned off; (2) Take the vehicle to a 4S shop for inspection, use a specialized fault diagnostic tool to locate the issue, and after repairs, use a decoder to clear the fault codes. Once the ESP is confirmed to be functioning properly, the fault light will turn off.
18
2
Share

Should the Car's Air Conditioning Use Internal or External Circulation?

Whether to use internal or external circulation in a car's air conditioning system cannot be generalized and should be determined based on the specific situation. The choice between internal and external circulation should be adjusted according to actual conditions. Below is a detailed explanation of both modes: 1. Internal Circulation: Prolonged use of internal circulation can lead to a decline in air quality inside the car because no fresh air is being introduced. However, when the air conditioning is first turned on, internal circulation can cool the interior temperature more quickly. Using internal circulation during summer for cooling is more energy-efficient. However, prolonged use of internal circulation is not advisable, and it's recommended to occasionally open the windows to let in fresh air before closing them and continuing with internal circulation. 2. External Circulation: External circulation continuously brings in fresh air, but in situations like city traffic jams, it may draw in more exhaust fumes. It is advisable to use external circulation more often when heating the car in winter.
5
1
Share

What brand is Boto tire?

Boto is a tire brand under Wanda Boto. It is one of the first domestic enterprises to pass the "Three Identicals" certification (identical standards, production lines, and quality). The products have obtained 3C compulsory certification, ISO9001, and U.S. DOT certification, and have been repeatedly awarded the title of "China Quality Integrity Enterprise". Its products are not only sold domestically but also exported to 130 countries and regions including the United States, Europe, and Asia, which fully demonstrates the excellent quality of Boto tires. Below is relevant information: 1. Wanda Boto tire series: In addition to superior quality, Wanda Boto tires also offer high cost performance. Its passenger car tires include multiple series: premium sports series, mid-range comfort series, ultra-long wear-resistant series, SUV off-road series, winter tire series, and commercial vehicle series. 2. Introduction to tire WP15: This tire features outstanding wear resistance and noise reduction. The shoulder adopts a transverse groove design to enhance steering grip and handling stability. The tread features three longitudinal drainage grooves, providing excellent drainage performance and improving wet road handling. Additionally, it adopts a closed shoulder design, effectively reducing noise caused by air compression during driving and improving quietness. 3. Introduction to Wanda Boto Tire Company: Wanda Boto Tire is a wholly-owned subsidiary of China Wanda Group. Founded in 1988, Wanda Group has become one of China's leading enterprises specializing in the production of all-steel radial tires, engineering machinery radial tires, semi-steel radial tires, and light truck tires. It has established stable supplier relationships with numerous automakers including FAW Group, Shaanxi Automobile Holding Group, and Beiqi Foton Group.
14
3
Share

What does the ET value of a wheel hub mean?

The ET value of a wheel hub refers to the offset between the mounting surface of the wheel hub and the centerline of the wheel rim, commonly known as the offset (Off-set value). Below is a detailed introduction: 1. Types of ET values: (1) Zero-offset wheel hub—indicates that the mounting surface of the wheel hub is located at the centerline of the wheel hub. (Used for SUV models and some BMW vehicles) (2) Positive-offset wheel hub—indicates that the distance between the mounting surface and the centerline of the wheel rim is towards the outer side. (Used for front-wheel-drive and some rear-wheel-drive models) (3) Negative-offset wheel hub—indicates that the distance between the mounting surface and the centerline of the wheel rim is towards the inner side. 2. Larger ET values result in smaller wheel spacing: The larger the ET value, the more the wheel hub will be recessed towards the inner side (reducing the track width between two wheel hubs on the same axle); conversely, the smaller the ET value, the more the wheel hub will protrude towards the outer side (increasing the track width between two wheel hubs on the same axle). 3. The ET value determines whether the wheel hub will rub against vehicle components: If the ET value is too large, it may rub against the vehicle's suspension system, which not only affects the suspension system but also poses safety risks. Therefore, when selecting a wheel hub, it is essential to refer to the original wheel hub's ET value. Of course, adjustments can be made later by adding spacers to reduce the wheel hub's offset.
1
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.