专业英语汽车构造.pptVIP

Unit 22 Steering System What does the steering system consist of ? The steering system consists of a steering wheel, a steering shaft, a steering column, a steering gear housing with side and lower covers, a globoid worm, a pitman shaft with a triple roller and bearings and a pitman shaft adjusting screw. What are the classifications of steering system ? There are two types of the steering system. They are manual steering system and power steering system. III. Exercises recirculating-ball steering gear SUV(Sport Utility Vehicle) linear motion rotational motion power steering steering column steerable wheel steering linkage knuckle arm hydraulic power steering system 循环球式转向器 运动型多用途汽车 线性运动 旋转运动 动力转向 转向柱 转向轮 转向杆系 转向节臂 液压助力转向系统 III. Exercises Identify the English names of steering system according to the picture. III. Read the following passage carefully and fill in the blanks with the proper form of the given words. Power steering is a system for (reducing ) the steering effort on cars by using an (external ) power source to assist in (turning ) the wheels. Power steering was (invented) in the 1920s by Francis W. Davis and George Jessup in Waltham, Massachusetts. Chrysler Corporation introduced the first commercially (available ) power steering system on the 1951 Chrysler Imperial under the name Hydraguide. Most new vehicles now have power steering, although in the 1970s and 1980s it was the (exception ) rather than the rule, at least on European cars. The (trend) to front wheel drive, greater vehicle mass and (wider ) tires means that modern vehicles would be extremely difficult to (manoeuvre ) at low speeds (e.g. when parking) without (assistance). IV. Translate the following sentences into Chinese. 1. The manual steering system incorporates: steering wheel and column, a manual gearbox and pitman arm or a rack and pinion assembly, linkages, steering knuckl