外文翻譯--汽車懸架工作原理-文庫吧資料
2024-09-04 17:14本頁面
【正文】 the terrain, an uncontrollable car. Enter the shock absorber, or snubber, a device that controls unwanted spring motion through a process known as dampening. Shock absorbers slow down and reduce the magnitude of vibratory motions by turning the kinetic energy of suspension movement into heat energy that can be dissipated through hydraulic fluid. To understand how this works, it39。 they were replaced with moldedrubber air springs in the 1930s. Based on where springs are located on a car ., between the wheels and the frame engineers often find it convenient to talk about the sprung mass and the unsprung mass. Springs: Sprung and Unsprung MassThe sprung mass is the mass of the vehicle supported on the springs, while the unsprung mass is loosely defined as the mass between the road and the suspension springs. The stiffness of the springs affects how the sprung mass responds while the car is being driven. Loosely sprung cars, such as luxury cars (think Lincoln Town Car), can swallow bumps and provide a supersmooth ride。s springing systems are based on one of four basic designs: Coil springs This is the most mon type of spring and is, in essence, a heavyduty torsion bar coiled around an axis. Coil springs press and expand to absorb the motion of the wheels. Leaf springs This type of spring consists of several layers of metal (called leaves) bound together to act as a single unit. Leaf springs were first used on horsedrawn carriages and were found on most American automobiles until 1985. They are still used today on most trucks and heavyduty vehicles. Torsion bars Torsion bars use the twisting properties of a steel bar to provide coilspringlike performance. This is how they work: One end of a bar is anchored to the vehicle frame. The other end is attached to a wishbone, which acts like a lever that moves perpendicular to the torsion bar. When the wheel hits a bump, vertical motion is transferred to the wishbone and then, through the levering action, to the torsion bar. The torsion bar then twists along its axis to provide the spring force. European carmakers used this system extensively, as did Pa
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