Automotive Wiki
Learn about vehicle components, mechanical principles, and advanced automotive technologies.
Structural Features of Automatic Transmissions
Automatic transmissions differ significantly from manual transmissions. Manual transmissions achieve gear changes by adjusting different gear combinations, whereas automatic transmissions achieve speed variation through hydraulic power transfer and gear combinations. The torque converter is the most distinctive component of an automatic transmission, comprising elements such as the pump impeller, turbine, and stator. The pump impeller and tur
How Automatic Transmissions Work
An automatic transmission is a device that automatically adjusts vehicle speed, controlled by a computer. Its working principle involves controlling the combination of clutches and gears via a hydraulic system to achieve gear shifts. Automatic transmissions feature various modes, including Drive, Reverse, Park, Sport mode, etc.
Driveshaft Definition
A driveshaft is a high-speed rotating component with few support points, making its dynamic balance crucial. Before leaving the factory, driveshafts typically undergo dynamic balancing tests and adjustments on a balancing machine. For front-engine, rear-wheel drive (RWD) vehicles, the driveshaft transmits rotation from the transmission to the differential's input shaft.
Definition of Commercial Vehicles
A commercial vehicle is a type of vehicle used for transporting people and goods, whose design and technical characteristics are primarily optimized for commercial transport needs. Common commercial vehicle types include microvans, pickup trucks, mini trucks, and light passenger vans.
Definition of Final Drive
The final drive is a crucial component in a vehicle's powertrain. It reduces rotational speed and increases torque. In vehicles with longitudinally mounted engines, the final drive also uses bevel gear transmission to change the direction of power. Through the final drive, we can reduce the transmission speed, thereby achieving higher output torque and consequently greater driving force.
Double Wishbone Suspension Definition
Double Wishbone suspension, also known as double A-arm independent suspension. This suspension system features two wishbones, upper and lower, which can simultaneously absorb lateral forces. Therefore, the upright only bears the vehicle's weight, resulting in high lateral rigidity.
Function of the Final Drive
The final drive has two functions: first, to change the direction of power transmission, and second, to act as an extension of the transmission, providing reduction ratios for different gears. The transmission's output is a torque rotating around the longitudinal axis, while the wheels need to rotate around the vehicle's transverse axis, thus requiring a device to change the direction of power transmission. The final drive
Basic Characteristics of Double Wishbone Suspension
The double wishbone suspension system can precisely position various parameters of the front wheels: When the front wheels turn, the two A-shaped wishbones can simultaneously absorb the lateral forces on the tires. Coupled with greater lateral rigidity, this results in less body roll during cornering. Typically, double wishbone suspension systems use unequal-length wishbone designs, which allows
Basic Introduction to Microvans
A microvan is a small passenger and cargo dual-purpose vehicle, its name comes from its boxy appearance. In the current market, microvans are primarily commercial vehicles with small engine displacements, focusing on economy and practicality. Microvans can serve as special-purpose vehicles, multi-purpose vehicles, official vehicles, business vehicles, or even family vehicles, used for transport.
Driveshaft Components
The driveshaft consists of three parts: the shaft tube, slip yoke, and universal joint. The slip yoke can automatically adjust the distance variation between the transmission and the drive axle, while the universal joint ensures the angle variation between the output shaft and the input shaft and achieves constant velocity power transmission.
Basic Introduction to Pickup Trucks
Pickup trucks hold a significant position in the automotive market: They are vehicles that combine a car-like front end and cabin with an open cargo bed. Pickup trucks are characterized by offering car-like comfort without sacrificing powerful performance, and they boast superior cargo capacity and off-road capability compared to passenger cars. Pickup trucks offer dual
Construction Principles of Double Wishbone Suspension
Double wishbone suspension consists of two unequal-length V-shaped or A-shaped upper and lower control arms and strut-type hydraulic shock absorbers. Typically, the upper control arm is shorter than the lower control arm. One end of the upper control arm connects to the strut shock absorber, and the other end connects to the vehicle body, while one end of the lower control arm connects to the wheel, and the other end connects to the vehicle body.
Introduction to Mini Trucks
Mini truck is the abbreviation for miniature truck, a small cargo vehicle. Its body structure is based on a mini-van, with a closed cargo box or bed added to the rear. According to the definition of Chinese motor vehicle specifications, the standard for a mini vehicle is a length not exceeding 5 meters and a gross mass not exceeding 1800 kg. Currently, those sold domestically
Suspension System Definition
The automotive suspension system is a crucial component of the entire vehicle support system, consisting of springs and shock absorbers located between the vehicle body and the wheels. The primary functions of the suspension system are to support the vehicle body and enhance ride comfort. Different suspension setups provide drivers with varying driving experiences. An excellent suspension system not only improves...
Types of Final Drive Reducers
Based on the number of gear reduction sets, final drive reducers can be classified into single-stage and dual-stage. Except for medium and heavy-duty vehicles requiring a large reduction ratio, most micro, light, and medium-duty vehicles use single-stage final drive reducers. •Dual-stage Reducer When the final drive reduction ratio is large, to ensure the vehicle has sufficient ground clearance