# 汽車底盤英文翻譯

FRONT END GEMOETRY AND WHEEL ALIGNMENT

GENERAL BACKGROUND

In order to take into account the various features that constitute the steering or front end geometry of a vehicle, it is necessary not only to consider the system in plan view as related to Ackermann effect, but also in end and side views. Considered in end or front view, the orientation of the steered wheels both with respect to the road surface and to their swivel axis is defined in terms of camber angle, king-pin inclination and steering offset. In side view, it is the angular disposition of the swivel axis relative to the vertical that we are concerned with, and which is termed castor angle.

Camber angle

This is the inclination of the road wheel centre plane relative to the vertical, as viewed from the front of the vehicle (Figures 24.9a and 24.10a). The camber angle is considered to be positive if the top of the wheel leans outwards and negative if it leans inwards . Historically, a noticeably positive camber was given to the front wheels of motor cars of an earlier era (as any reader who has ever seen one of the legendary prewar Bugatti cars head on will agree!), its purpose being to maintain the wheels normal to the surface of the then steeply cambered or crowned single-track roads.

In modern automotive practice, however, the front wheels are usually provided with either a zero or a small camber angle of up to about 1度 positive, at the normal standing height of the vehicle. The tendency of a cambered wheel to roll in a direction towards which it is leaning, thereby producing a side force or camber thrust, can have two beneficial effects on the steerable wheels. First, it tends to counteract any small sideways forces imposed on the tyres by ridges in the road, and second, it induces a small lateral preload in the steering linkage. The overall effect is therefore to promote stable, straight-ahead running.

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• 9 years ago

前端的GEMOETRY與車輪定位

一般背景

為了考慮到各種功能，構成了轉向或前端幾何的車輛，這是必要的，不僅要考慮系統的計劃有關阿克曼認為效果，而且在結束與側面。考慮在年底或前視圖，方向輪的帶領兩個方面的路面和他們的旋轉軸的定義條款外傾角，王針傾斜和轉向抵消。在側面看，它是角旋轉軸傾向的相對垂直，我們所關心的，哪些是被稱為蓖麻角。

外傾角

這是傾斜的車輪中心平面相垂直，從形式看前面的車（圖 24.9a和24.10a）。該傾角被認為是正面的，如果頂部的車輪向外傾斜，負向內傾斜，如果它。從歷史上看，一個明顯的積極曲面是考慮到對汽車前輪前一個時代（任何讀者誰見過一戰前的傳奇布加迪汽車頭部會同意！），其目的是為了維護正常的車輪當時的表面急劇弧形或加冕單軌道路。

在現代汽車，但實際上，前輪通常提供了無論是零或一小傾角高達約 1度陽性，在正常站立高度的車輛。這種傾向的一個弧形車輪滾動的方向，為此它是學習，從而產生一個側向力或拱的推力，可以有兩個有利影響的可操縱輪。首先，它往往以抵消任何小側身勢力強加給輪胎的山脊在路上，二，歸納在一個小的預側轉向聯動。因此，總的效果是促進穩定，筆直向前運行。