By Society of Automotive Engineers of China Society of Automotive Engineers of China

These court cases assemble extraordinary papers submitted to the 2015 SAE-China Congress, nearly all of that are from China, the most important motor vehicle maker in addition to such a lot dynamic automobile industry on this planet. The booklet covers quite a lot of automobile themes, featuring the most recent technical achievements within the undefined. the various methods provided may help technicians to unravel the sensible difficulties that almost all impact their day-by-day work.

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And the suspension travel satisfies the following function. h ¼ À100 cos p  t ðt 2 ½0; 10ŠÞ 10 ð4:7Þ From Eq. 7), the suspension travel, velocity and acceleration are calculated and illustrated in Fig. 2. Substituting the geometric parameters of sets 1 and 2 into Eqs. 6), one can obtain the variation curves of suspension branches which are shown in Fig. 3. 1 Geometric parameters of the RRIS a2 ðmmÞ b11 ðmmÞ b12 ðmmÞ b2 ðmmÞ #1 ð Þ #2 ð Þ 150 180 150 120 450 400 450 500 100 100 45 40 45 50 100 Travel Velocity (mm/s) Travel Distance (mm) (c) (b) (a) 75 50 25 0 -25 -50 -75 -100 0 2 4 6 Time (s) 8 10 35 30 25 20 15 10 5 0 -5 0 2 4 6 Time (s) Fig.

There are two objectives: one is keeping handing stability and the other one is keeping path tracking. So the target path shall be set in addition to the target vehicle variables which ensure the vehicle handing stability. 1 Target Path A double lane change path with sine function was applied. 5 m’s lateral skewing during 60 m’s longitudinal distance. The path is shown in Fig. 2. The mathematical function of the path is expressed in Eq. 5).  ylat ¼ x p À p2Þ þ 1:75 1:75 sinð30 0 ð120 x 180Þ ðx\120; x [ 180Þ where, x-longitudinal location; ylat-lateral location ð5:5Þ Y.

The comparison results indicate that the RRIS has better WAPs and smaller forces along both lateral and longitudinal directions, which could reduce the tire wear and enhance the handling ability in application. 1 Á Kinematics Á Wheel alignment parameters Á Introduction Suspension system plays a very important role in the vehicle chassis [1]. It general consists of guidance mechanism, shock absorber and spring [2]. The guidance mechanism is the most important component for the suspension system, in that it determines the K&C characteristics directly [3].

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