Air Suspension (Air suspension), commonly known as "air shock, an active suspension is developed in 1960s. Suspension
stiffness and damping can change according to the driving conditions of
the car (the state of motion of the vehicle and road conditions, and
load, etc.) and dynamic adaptive adjustment of the suspension system is
always in the best damping state. For
example, the high-speed driving suspension can harden, to improve
vehicle stability, low speed for long periods of time, the control unit
will think through bumpy roads, the suspension softened to improve ride
comfort.
As we all know, the core components of the suspension shock springs and shock absorbers. The
air suspension is also no exception, gas springs and adjustable damping
shock absorbers make up the main body of the air suspension. First
introduce the gas spring, the gas spring is in a sealed container into
the compressed gas, the use of the compressibility of gas to achieve the
action of the spring. Such
stiffness of the spring is variable, because the role in the load on
the spring is increased, the the quantitative gas within the container
is compressed, natural increase stiffness; contrary. Load is reduced, the reduction in pressure, the stiffness of the spring naturally reduced. From the classification point of view. Air spring and oil and gas spring two gas springs, air springs can be divided into the capsule spring and membrane spring.
There are two types of damping adjustable shock, a hydraulic damper, an inflatable shock absorber. Common
hydraulic variable damping shock absorber electromagnetic hydraulic
shock absorber, it is detected by the ECU to the need to "harden" makes
electromagnetic liquid particles energized by the disorder to the neatly
arranged, because the relative particle pole relationship
difficult to compress compression, damping, it is hard; Similarly, if
it is "softened" ECU cancel energized instructions will let the
electromagnetic liquid particles lose their magnetism again, damping
becomes smaller, and at this time will be very soft.
The air suspension system uses sensors to detect cars traveling the state. For
example, when the left turn of the vehicle, the body under the action
of centrifugal force For tilted to the right, then the ECU will be
collected and processed by the data of the various sensors, to issue
control instructions to the front and rear solenoid valves, so that the
outer wheel of the air spring pneumatic so that the inside wheel of the air spring is deflated, i.e. opposite to the body roll force, to resist the vehicle body roll.
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