PHRASES AND EXPRESSIONS wheel alignment 车轮定位 steering axis 转向轴线内倾角 inclination toe-out on turns 转弯负前束 tipping effect 侧倾效应 thrust angle 推力角,推力线 wheel tracking (前轮与后轮)同辙行驶 dog tracking 蛇形行驶 eccentric cam 偏心凸轮
PHRASES AND EXPRESSIONS wheel alignment 车轮定位 steering axis inclination 转向轴线内倾角 toe-out on turns 转弯负前束 tipping effect 侧倾效应 thrust angle 推力角，推力线 wheel tracking （前轮与后轮）同辙行驶 dog tracking 蛇形行驶 eccentric cam 偏心凸轮
Wheel Alignment 4 Wheel alignment is the process of measuring and correcting the various angles formed by the front and rear wheels spindles and steering arms. Correct alignment is vital. Improper alignment can cause hard steering pulling to one side, wandering noise, and rapid tire wear. Types of Wheel Alignment 11 Rear-wheel drive vehicles require a two-wheel alignment or front-wheel alignment only. The rear wheels are attached to a solid rear axle assembly which cannot be adjusted, and generally stays in alignment throughout the life of the vehicle 12 Today, most front-wheel drive vehicles have provisions for adjusting the rear wheels. In addition many rear-wheel drive vehicles are equipped with independent rear suspensions, which also must be adjusted Also modern solid rear axles and suspension systems are lightweight and can become misaligned Therefore the four-Wheel alignment in which the front and rear wheel alignment angles are checked and adjusted is commonly performed
Wheel Alignment 4 Wheel alignment is the process of measuring and correcting the various angles formed by the front and rear wheels, spindles, and steering arms. Correct alignment is vital. Improper alignment can cause hard steering, pulling to one side, wandering, noise, and rapid tire wear. Types of Wheel Alignment 11 Rear-wheel drive vehicles require a two-wheel alignment or front-wheel alignment only. The rear wheels are attached to a solid rear axle assembly which cannot be adjusted, and generally stays in alignment throughout the life of the vehicle. 12 Today, most front-wheel drive vehicles have provisions for adjusting the rear wheels. In addition, many rear-wheel drive vehicles are equipped with independent rear suspensions, which also must be adjusted. Also, modern solid rear axles and suspension systems are lightweight and can become misaligned. Therefore, the four-wheel alignment, in which the front and rear wheel alignment angles are checked and adjusted, is commonly performed
159 Adjustable front wheel settings on most modern vehicles are caster, camber, and toe. Nonadjustable settings are steering axis inclination and toe-out on turns. Rear wheel settings that can be made on many modern vehicles are camber and toe. Modern practice is to check both front and rear wheel alignment. Note that the various alignment angles are all related a change in one can alter the others Alignment Measurement Values 14 All alignment values except for toe are measured in degrees. Toe is measured in fractions of an inch or millimeters Caster 15 Positive caster tends to force the wheels to travel in a straight ahead position It also assists in recovery( wheels turning back to straight ahead position after making a turn On late model cars, there is often little or no positive caster. Positive caster makes it more difficult to turn the wheels from the straight ahead position than when no caster angle is present [1]
159 Adjustable front wheel settings on most modern vehicles are caster, camber, and toe. Nonadjustable settings are steering axis inclination and toe-out on turns. Rear wheel settings that can be made on many modern vehicles are camber and toe. Modern practice is to check both front and rear wheel alignment. Note that the various alignment angles are all related. A change in one can alter the others. Alignment Measurement Values 14 All alignment values, except for toe, are measured in degrees. Toe is measured in fractions of an inch or millimeters. Caster 15 Positive caster tends to force the wheels to travel in a straight ahead position. It also assists in recovery (wheels turning back to straight ahead position) after making a turn. On late model cars, there is often little or no positive caster. Positive caster makes it more difficult to turn the wheels from the straight ahead position than when no caster angle is present [1]