Causes of Understeer and New Solutions
DOI:
https://doi.org/10.54097/hset.v37i.6097Keywords:
Understeer, Camber angle, steering angle, turning time.Abstract
This study will discuss the problem of vehicle understeer, in order to explore the situation that the vehicle steering action can not be completed smoothly. With the development of the automobile industry, the vehicles produced by many automobile manufacturers still have the problem of insufficient steering. So we take BMW M3 as the research objects. So far, the known causes of vehicle understeer are camber, automobile suspension, tire wear and so on. The above three problems have been explained in other papers. On their basis, we propose that when turning, the size of the steering angle is related to whether it can turn, and at the same time, the steering angle is related to the turning time. So we make a conjecture whether changing the steering time can improve the problem of understeer. In order to verify this conjecture, we model the vehicle, analyzed various data and charts, and finally came to the conclusion that changing the steering time can improve the problem of understeer. I hope our article can provide a new idea for the future research on understeer.
Downloads
References
Xing Z ,1996, “why understeer and oversteer occur”, Automobile and driving maintenance, (3): 21.
An X B, Bai Y C and Chen C F, 2009, “Analysis of the Impact of Wheel's Camber and Toe-in to Turning Wheel's Side Skidding”, JOURNAL OF ACADEMY OF MILITARY TRANSPORTATION, 11(4): 57-60.
Chen L X, Jiang Q W and Li Y, etc, 2020, “Research on Influencing Factors of Understeering Characteristics of Complete Vehicle”, Automotive Practices, Volume 45 (20): 124-128.
Li Z D, Lan T and Wang X M, et al, 2018, “Optimization Design of Toe and Camber Front Wheels of a SUV Reducing Tire Wear”, Journal of Chengdu Institute of technology, 21 (2): 1-4, 17.
Yang T, 2012, “Influence of toe in and camber angle on tire”, Automobile application, (5): 39-39.
Xiao H Y, Wei D G, and Jiang G S, 2011, “Study on Effects of the Front Wheel Camber Angle on Vehicle Steering Stability in Critical Situations Based on Bifurcation Theory”, Journal of automotive engineering, 1 (2): 101-105.
Qian L J and Ma J, 2014, “A Research on the Matching Between Camber and Toe-in Based on Complex Carcass Deformation”, Automotive Engineering, 36 (3): 351-355388.
Zhang J Y, Ying Z Y and Zheng J W, etc,2021, “Tyre tread for flat pavement”, CN213007414U [P].
Zhang Y H, 2007, “Effect of tread pattern on tire wet adhesion and tire rolling characteristics” Anhui: Hefei University of technology.
Xia C G and Wang D F, 2004, “Prediction of Suspension Parameters Affecting Vehicle Cornering Characteristics by Using Flexible Multi-body Dynamics”, Automotive Engineering, 26 (2): 174-176232.
Chu Z G, Deng Z X and Hu Y M, et al, “Effect of Stiffness of McPherson Suspension on Stable Steering Characteristic” Journal of Chongqing University (NATURAL SCIENCE EDITION), 26 (8): 10-13.
Yang L, 2017, “Research on the influence of rear suspension elastic parameters on passive steering characteristics of SUV”, Hubei: Wuhan University of technology.
Wang W Y, Lin Y B and Deng Z P, 2021, “Research the Position Design of the McPherson Suspension Anti-Roll Bar's Linkage on the Steering Performance”, Automotive practical technology, 46 (15): 141-144.
Wu X P, Hong C and Fu W, 2018, “Influence of vehicle suspension commissioning parts on understeer characteristics of the whole vehicle” SAIC Motor, (1): 20-23.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
