Study on the Effect of Steering Trapezoid Arrangement Position on the Vehicle Handling and Stability Performance
Aiming at the problem that the steering trapezoid arrangement affects the handling and stability performance of the vehicle,and two arrangements:steering trapezoidal arrangement on the front side of the front axle(referred as steering trapezoidal forward arrangement)and steering trapezoidal arrangement on the rear side of the front axle(referred to as steering trapezoidal rearward arrangement)were analyzed from the spatial mechanics point of view,and it was concluded that steering trapezoidal rearward arrangement will increase the lateral force steering coefficient,which will increase the understeer of the whole vehicle.Next,a suspension and vehicle simulation model were built in ADAMS/Car,and the effects of the steering trapezoid arrangement and the connection between the steering and subframe on the vehicle handling and stability performance were investigated by K&C and handling simulation.The results show that the under-steer of the vehicle can be improved by 33.67%when the steering trapezoid is rear-mounted and the steering gear is connected to the subframe bushing compared with the steering trapezoid is front-mounted and the steering gear is rigidly connected to the subframe.
Steering trapezoid arrangementHandling and stability performanceUndersteerLateral force steer coefficient
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