Unit 05 Car Suspension 汽车专业英语教学课件.pptVIP

terrain [5terein] n. 山地 stringent [5strindVEnt] adj. 严格的 Unit 5 Car Suspension PHRASES coil spring 扭簧 leaf spring 钢板弹簧 torsion bar 扭力杆 air spring 空气弹簧 shock absorber 减振器 independent suspension 独立悬架 Unit 5 Car Suspension NOTES 1.??But roads are far from flat. Without an intervening structure, all of wheels vertical energy is transferred to the frame, which moves in the same direction. In such a situation, the wheels can lose contact with the road completely. 但道路远不是那么平坦的。没有这个嵌入装置(悬挂)，所有的车轮竖向能量都传给车架向同一方向运动，这样，车轮就不能与地面完全接触。 Unit 5 Car Suspension 2.??The 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. 弹簧支承重是弹簧上支承的汽车质量，非支承重可以粗略地定义为路面与悬挂弹簧间的这部分质量。 Unit 5 Car Suspension 3.??The spring will continue to bounce at its natural frequency until all of the energy originally put into it is used up. A suspension built on springs alone would make for an extremely bouncy ride and, depending on the terrain, an uncontrollable car. 弹簧会继续以其固有频率振动直到原先施加的能量用完，只用弹簧悬架结构的汽车行驶时振动很大，车体难以控制，具体取决于路况。 Unit 5 Car Suspension 4.??When the car wheel encounters a bump in the road and causes the spring to coil and uncoil, the energy of the spring is transferred to the shock absorber through the upper mount, down through the piston rod and into the piston. 车轮遇到来自路面的冲击引起弹簧卷紧或松开，弹簧的能量通过上支点传到减振器上，压下活塞杆而进入活塞。 Unit 5 Car Suspension 5.??Anti-sway bars (also known as anti-roll bars) are used along with shock absorbers or struts to give a moving automobile additional stability. An anti-sway bar is a metal rod that spans the entire axle and effectively joins each side of the suspension together. 防倾杆(也称防晃杆)与缓冲器或者压杆连用给行驶中的汽车提供附加稳定作用，防倾杆是金属杆，它横跨整个车桥，将两侧的悬架有效地连在一起。 Unit 5 Car Suspension 6.??Dependent front suspensions have a rigid front axle that connects the front wheels. Basically, this looks like a solid bar under the front of the car