Automotive Wiki
Learn about vehicle components, mechanical principles, and advanced automotive technologies.
Electronically Controlled Hydraulic Adjustable Suspension
Electronically Controlled Hydraulic Adjustable Suspension, also known as Continuous Damping Control (CDC) system, is an active suspension technology that can independently control the damping of each wheel's suspension. Its electronic sensors can adjust the shock absorbers in real-time based on road conditions, allowing them to frequently switch between soft and hard settings, thereby more quickly and accurately controlling the vehicle.
Definition of Top Speed (km/h)
Refers to the maximum speed a car can achieve under windless conditions on a level, good asphalt or concrete road. However, the top speed mentioned here is only data provided by the manufacturer for reference and does not represent PCauto's actual test data. According to China's regulations, top speed testing needs to be conducted...
Technical Characteristics of Dual-Clutch Transmissions
A Dual-Clutch Transmission (DCT) is a gearbox that combines the advantages of both manual and automatic transmissions. It employs two clutch sets to achieve seamless gear changes: one set controls odd gears and the other controls even gears. Before a shift, the system pre-engages the next gear. Once a shift command is received, the DCT will
Conditions for Reaching Top Speed
To reach top speed, the following three conditions must be met: 1. Select an appropriate road surface; 2. Shift the vehicle into overdrive. For example, in a 5-speed car, some vehicles have 4th gear as overdrive, while others have 5th gear as overdrive; 3. After shifting into overdrive, press the accelerator pedal to the floor. Theoretically, when the engine speed reaches the RPM corresponding to maximum power, your car will achieve its top speed.
Types of Dual-Clutch Transmissions
Wet dual-clutch refers to a dual-clutch system composed of two sets of coaxially mounted multi-plate clutches, one large and one small, which are installed in a sealed oil chamber filled with hydraulic fluid, thus offering better adjustability and excellent thermal stability, and capable of transmitting higher torque. Dry dual-clutch, on the other hand, is based on the 6-speed DQ250
Transmission Type
A 5-speed manual transmission is a manual shifting device with 5 gears. In contrast, a 4-speed automatic transmission has 4 gears and is a conventional automatic shifting device. A 6-speed AT transmission is a conventional automatic transmission with 6 gears that can achieve manual shifting functionality. 5-speed AMT
Definition of Manual Transmission
A manual transmission, also known as a manual gearbox, is fully referred to in English as 'manual transmission' and abbreviated as MT. It is a device that allows the driver to manually shift gears by moving a gear lever, thereby changing the gear ratio to achieve speed variation. During operation, the clutch must be depressed before the gear lever can be moved.
How to Use Automatic Transmission with Manual Mode
An automatic transmission with manual mode is an automatic transmission that combines manual and automatic shifting functions: When using an automatic transmission with manual mode, you need to switch the gear lever to the "M" position, and then perform upshift or downshift operations as needed. Additionally, some models offer button-based shifting. Behind the steering wheel
Explanation of HBMC
HBMC stands for Hydraulic Body Motion Control. The HBMC system consists of accumulators on the chassis and hydraulic struts within the suspension. Each shock absorber's inner and outer sleeves are connected to an accumulator. The vehicle's left inner sleeve...
Advantages and Disadvantages of Manual Transmissions
The advantages of manual transmissions are clear: they have a simple structure, reliable performance, low manufacturing and maintenance costs, high transmission efficiency, and are theoretically more fuel-efficient. Furthermore, being purely mechanically controlled, they offer quick shift response and more directly convey the driver's intentions, thus providing greater driving pleasure. However, compared to automatic transmissions,
How a Manual Transmission Works
A manual transmission is composed of gear sets with different gear ratios. Its working principle is to change gear ratios by switching between different gear sets. As a crucial component for power distribution, a transmission must have a power input shaft and an output shaft. These, along with the gears that make up the transmission, form a manual transmission.
How HBMC Works
When the vehicle is off-roading, the accumulator applies different hydraulic control to the four shock absorbers, making the vehicle's posture more stable compared to models without the HBMC system, while also enhancing off-road performance: When the vehicle is cornering, the suspension on the inside of the turn is in an extended state, and the suspension on the outside of the turn is in a compressed state.
Cylinder Head
The cylinder head is mounted on top of the cylinder block, sealing the cylinders and forming part of the combustion chamber: Due to contact with high-temperature and high-pressure combustion gases, the cylinder head is subjected to significant thermal and mechanical loads. In water-cooled engines, the cylinder head contains cooling water jackets, which cool high-temperature areas such as the combustion chamber through circulating water. Additionally, the cylinder head also features
The Role of Manual Transmissions
The physical characteristics of an engine necessitate the existence of a transmission: Firstly, the engine's peak rotational speed dictates the transmission's design. Secondly, the engine's maximum power and maximum torque occur within specific RPM ranges, for instance, the engine's maximum power peaks at 5500 rpm. A transmission can, during vehicle operation,
Compressor Cylinder Head
The cylinder head of a diaphragm compressor is mounted on top of the cylinder block, separated by a diaphragm. Since diaphragm compressors frequently come into contact with corrosive or oxidizing gases, they require corrosion resistance. Cylinder heads are typically manufactured from 3Cr13 or 316L stainless steel. For air compressors, 40Cr can also be used.