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1、附录 双横臂式悬挂系统附录1 外文中文翻译按横臂数量的多少又分为双横臂式和单横臂式悬挂系统。单横臂式具有结构简单，侧倾中心高，有较强的抗侧倾能力的优点。但随着现代汽车速度的提高，侧倾中心过高会引起车轮跳动时轮距变化大，轮胎磨损加剧，而且在急转弯时左右车轮垂直力转移过大，导致后轮外倾增大，减少了后轮侧偏刚度，从而产生高速甩尾的严重工况。单横臂式独立悬挂系统多应用在后悬挂系统上，但由于不能适应高速行驶的要求，目前应用不多。双横臂式独立悬挂系统按上下横臂是否等长，又分为等长双横臂式和不等长双横臂式两种悬挂系统。等长双横臂式悬挂系统在车轮上下跳动时，能保持主销倾角不变，但轮距变化大(与单横臂式相类似)
2、，造成轮胎磨损严重，现已很少用。对于不等长双横臂式悬挂系统，只要适当选择、优化上下横臂的长度，并通过合理的布置、就可以使轮距及前轮定位参数变化均在可接受的限定范围内，保证汽车具有良好的行驶稳定性。目前不等长双横臂式悬挂系统已广泛应用在轿车的前后悬挂系统上，部分运动型轿车及赛车的后轮也采用这一悬挂系统结构。 双横臂式独立悬架，是一种车轮在汽车横向平面内摆动的独立悬架，这种独立悬架被广泛应用在轿车前轮上。双横臂，顾名思义，两条臂横向布置，两臂有做成A字形或V字形，V形臂的上下2个V形摆臂以一定的距离，分别安装在车轮上，另一端安装在车架上。 双横臂式独立悬架一般多为不等臂双横臂式，上臂比下臂短，当汽
3、车车轮上下运动时，上臂比下臂运动弧度小。这将使轮胎上部轻微地内外移动，而底部影响很小。这种结构有利于减少轮胎磨损，提高汽车行驶平顺性和方向稳定性。由于当双横臂式独立悬架悬架变形时，车轮平面将产生倾斜而改变两侧车轮与路面接触点的距离轮距，致使轮胎相对于地面侧向滑移，破坏轮胎和地面的附着。附录2 外文文献 Number by the number of arm is divided into wishbone and single -wishbone suspension system. Single-Arm has a simple structure, roll center height,
4、there is a strong anti-roll capability advantages. But with the increased speed of modern cars, the roll center is too high will cause the wheel beats track changes, tire wear increased, and in sharp turns around the wheel vertical force when the transfer is too large, resulting in rear wheel camber
5、 increases, reducing the rear wheel cornering stiffness, resulting in a serious condition high-speed flick. Single-wishbone independent suspension system multi-application system in the rear suspension, but can not meet the requirements of high speed, the current application is small. Double wishbon
6、e independent suspension system is at the upper and lower arm of equal length, is divided into equal length wishbone and the unequal length double wishbone suspension system of two. Equal length double wishbone suspension system in the wheel up and down when the kingpin inclination to maintain the s
7、ame, but the track changes in a large (and similar single-Arm), resulting in severe tire wear, is now rarely used. For the unequal length double wishbone suspension system, as long as the appropriate choice to optimize the length of the upper and lower arm, and by a reasonable arrangement to enable
8、track and the front wheel alignment parameters are within acceptable limits to ensure the car have good driving stability. Present unequal length double wishbone suspension system has been widely used in cars, front and rear suspension systems, part of the sports car and the cars rear suspension sys
9、tem is also using this structure.Double wishbone independent suspension, is a horizontal plane in the automotive wheel independent suspension swing, which is widely used independent suspension on the front of the car. Double wishbone, by definition, two-arm horizontal arrangement, the arms are made
10、of A-shaped or V-shaped, V-shaped upper and lower arm of the V-shaped arm 2 to a certain distance, the wheels were installed in the other end installed in the car rack.Double wishbone independent suspension in general are mostly ranging arm double wishbone type, upper arm shorter than the lower arm,
11、 the wheel when the car moves up and down, the upper arm under the arm movement than the smaller arc. This will move the tire inside and outside the top slightly, while the bottom has little effect. This structure helps to reduce tire wear, improve vehicle ride comfort and directional stability. Bec
12、ause when the double wishbone independent suspension suspension deformation, tilt wheel plane will have to change the wheels on both sides of the distance between the point of contact with the road - tread, causing the tire slippage relative to the ground, damage the tire and the ground attachment.-32-
