Tire cornering properties at large camber angles: mechanism of the moment around the vertical axis

Fujioka, Takehiko; Goda, Kenjiro

doi:10.1016/0389-4304(95)00018-3

Cited by 4 publications

(1 citation statement)

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“…It is evident that keeping the same lateral force, the camber thrust can reduce the absolute value of slip angle and consequently, the lateral slip loss is reduced. From Figure 6d, it is seen that camber angle can increase the aligning moment and this tyre property was also presented in [24]. The components of M zi sinγ i can have different influences on rolling resistance loss in different slip angle regions.…”

Section: Analysis Of Components Of Power Lossmentioning

confidence: 69%

Exploring the Potential of Camber Control to Improve Vehicles’ Energy Efficiency during Cornering

et al. 2018

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Actively controlling the camber angle to improve energy efficiency has recently gained interest due to the importance of reducing energy consumption and the driveline electrification trend that makes cost-efficient implementation of actuators possible. To analyse how much energy that can be saved with camber control, the effect of changing the camber angles on the forces and moments of the tyre under different driving conditions should be considered. In this paper, Magic Formula tyre models for combined slip and camber are used for simulation of energy analysis. The components of power loss during cornering are formulated and used to explain the influence that camber angles have on the power loss. For the studied driving paths and the assumed driver model, the simulation results show that active camber control can have considerable influence on power loss during cornering. Different combinations of camber angles are simulated, and a camber control algorithm is proposed and verified in simulation. The results show that the camber controller has very promising application prospects for energy-efficient cornering.

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Section: Analysis Of Components Of Power Lossmentioning

confidence: 69%

Exploring the Potential of Camber Control to Improve Vehicles’ Energy Efficiency during Cornering

et al. 2018

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A Motorcycle Tire Model for Dynamic Simulations: Theoretical and Experimental Aspects

Lot

2004

Meccanica

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Novel high-fidelity tyre model for motorcycles to be characterised by quasi-static manoeuvres – rationale and numerical validation

Bartolozzi

Savino

Pierini

2021

Vehicle System Dynamics

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Although diverse tyre model formulations exist in literature, they are suited for characterisation using a dedicated test bench, preventing parameters' estimation in driving conditions.This study defined a novel motorcycle tyre model, characterisable through driving manoeuvres using simple instrumentation consisting in an inertial measurement unit, steering position sensor and wheel speed sensors. Acquired signals were used to estimate instantaneous tyre forces, moments, slip angle and other properties, which were employed to calculate tyre model's parameters.Tyre model development and validation were performed in simulation environment: we used a Magic Formula tyre-equipped motorcycle model to perform a set of manoeuvres, which were employed to characterise the proposed tyre model. Lastly, a set of quasi-static manoeuvres was conducted using the same motorcycle model equipped with the two tyre models, and results were compared.Comparison results showed a close reproduction of real tyre forces, moments and slips by the proposed tyre model for quasi-static manoeuvres, accurately reproducing motorcycle dynamics. Therefore, steering torque was correctly predicted for different lateral acceleration values.These results show that the proposed tyre model can be characterised, for both longitudinal and lateral dynamics, using this limited set of manoeuvres and simple instrumentation; the correctly predicted steering torque could allow the use of this tyre model for handling description.

show abstract

Tire cornering properties at large camber angles: mechanism of the moment around the vertical axis

Cited by 4 publications

References 1 publication

Exploring the Potential of Camber Control to Improve Vehicles’ Energy Efficiency during Cornering

Exploring the Potential of Camber Control to Improve Vehicles’ Energy Efficiency during Cornering

A Motorcycle Tire Model for Dynamic Simulations: Theoretical and Experimental Aspects

Novel high-fidelity tyre model for motorcycles to be characterised by quasi-static manoeuvres – rationale and numerical validation

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