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What's a hanger? What does it do
As a power link between the body and the wheel, the hanger is not only responsible for buffering the bump, ensuring that the wheel is attached to the ground, but also inhibiting brakes/turns. It can be said that the comfort and control limits of vehicle driving depend heavily on the calibration and performance of the suspension system。
02 line control active suspend
The suspension system consists mainly of springs (flexible elements), shock-retarders (nis barriers), steering structures and horizontal stabilizers. The elastic elements are used to withstand body weights and buffer road shocks, mainly in the four main categories of steel plate springs, spiral springs, swing springs and air springs。
Valvers are used to suppress spring vibrations, absorb shock energy, direct institutions are used to transmit power and force rectangulars, to ensure that the wheel moves on track, and horizontal stabilizers are used to prevent side tilts。
Our well-known hangers, such as the mcphersons, the double fork arm and the multi-plugs, have evolved in essence to be the extreme human quest for car manipulation and comfort。
As cars move towards electric and intellectualization, traditional passive or semi-active suspensions are no longer sufficient to meet the need for high-level intelligent driving. Wire-controlled active hangers were created, with telecommunications precision control of suspension barriers and vehicle heights, which allowed for the dynamic regulation of car postures and removed the performance limits of traditional mechanical hangers。
Automobile electro-control suspension systems are structured and controlled in a variety of ways, but their underlying principles are the same. An example of this is the system theory of active air suspension。
Picture
As an example of raising/reducing the height of the vehicle, when the suspension ecu gives instructions to raise the body, compresses the opportunity to pump out dry air, fills the four-wheel gas booster and lifts the body; and so on, the compressor automatically stops. If you need to lower your body, the high pressure air inside the booster will pass through the dryer and release the leak from the exhaust valve。
The electromagnetic valve, which is under the command of the eu, controls the inflating and venting of each wheel-depressor separately, thus allowing flexibility in regulating the height of the vehicle as a whole。
What's the difference between a 48v/800v hanger?
The 48vs, 800vs, or distributed, integrated, including oil, electric directs, rollers, etc. That you've heard so often lately, are actually just different ways to achieve the suspension function. The choice is based on demand, not absolute good or bad。
I. 800v system suspension system for high pressure drive + low pressure control
Look at clouds - z
The 800v high voltage transmission to a suspended double-wire control unit, which converts direct current power to three-phase communication, driving four separate rounds of independent straight-line electric power through the three-phase power plant。
The control logic is as follows:
The first control module (mcu controller), which is the control core for high-pressure side execution, connects the high-voltage power to the actuator, regulates the current size of the transmission to the actuator and controls the output of the actionr's target. The second control module (a car-wide motion controller) serves as the decision-making core for staggers and is responsible for calculating and issuing target active commands to the first control module, while connecting the detection and support modules。
Ideas 800v active suspension
Ideally, the 800v split electrodynamic hydraulic pump programme should be used: the centralized high pressure pumping station should be at the core, and energy should be provided to the four wheelers via the high pressure pipe, which consists of four 800v hydraulic pumps, four double-valve cdc boosters and the air spring。
800v high voltage transmissions to four stand-alone hydraulic pumps placed within the frame of the car, electric-driven hydraulic pumps to create high-pressure oil routes, each through a high-voltage pipeline to a four-wheel-pressure tank implementer, and the main one-caulding air spring to regulate car posture。
Ii. The 48v system
The 48-day suspension consists of 48-v without a brush, gear pump and controller. Its structure is based on a wheel-end integrated programme, which directly installs the cell on the booster and provides high voltage relief to 48v via the dc/dc converter. The working method is to regulate the fluid pressure at a millisecond rate by a 48v power-driven hydraulic pump, with four rounds of independent active regulation。
48v is fast, energy-depleted and suitable for fine filtering; 800v is powerful and robust and suitable for maximum attitude control. Both are focused。
