Effect of tire slip losses on the energy demand and fuel consumption of a light-duty vehicle

被引:0
|
作者
d'Ambrosio, Stefano [1 ]
Vitolo, Roberto [1 ]
机构
[1] Politecn Torino, Energy Dept, Cso Duca Abruzzi 24, I-10129 Turin, Italy
关键词
Slip losses; rolling resistance; effect of tire inflation pressure; vehicle fuel consumption; vehicle energy demand; HEAVY-DUTY; EMISSIONS; ECONOMY;
D O I
10.1177/09544070211056155
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The contribution of the tire-road slip of traction wheels to the total resistance opposing the motion of a light-duty commercial vehicle has been investigated through the simulation of several homologation and custom driving cycles. The calculation of the contribution of the tire slip losses was based on the estimation of the longitudinal tire slip, by means of Pacejka's MF5.2 tire model. In this work, the computational steps required to evaluate this contribution were implemented in a previously developed fuel consumption simulation tool. Simulations were performed under several vehicle loading conditions and tire inflation pressures on traction and non-traction wheels, and considering different tire-road adherence conditions, in order to obtain a characterization of the tire slip losses over a wide range of working conditions. An analysis of the results shows that, although the contribution of tire slip losses to the total vehicle energy demand and fuel consumption may be relevant - especially under low-load, low adherence conditions - the sensitivity of the average on-cycle vehicle energy/fuel consumption to changes in the tire inflation pressure is only affected slightly by tire slip losses. Therefore, tire slip losses can be neglected in practice, when the aim of a simulation is to optimize the tire pressure to achieve average vehicle working conditions over a driving cycle.
引用
收藏
页码:2331 / 2355
页数:25
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