Abstract
Traffic congestion and lack of parking spaces in urban areas etc. may lessen the original benefits of cars, and now new ultra-small mobility concepts called personal mobility vehicles (PMVs) are receiving attention. Among them, PMVs with an inward tilting mechanism in order to avoid overturning on turning, as in motorcycles, look realistic in new, innovative traffic systems. In this study, PMVs with an active inward tilting mechanism with three wheels, double front wheels and single rear wheel, were studied regarding front inner wheel lifting phenomena, capability of obstacle avoidance and energy balance of active tilting mechanism. Based on a comprehensive study of inner wheel lifting and obstacle avoidance, PMVs with a front wheel steering system as the most realistic specification were compared on capability of obstacle avoidance with passenger cars and motorcycles with those that have current market experience, and showed better capability. Although the energy consumption of an active inward tilting mechanism might be in conflict with the energy efficiency of small PMV concepts, the energy needed to tilt PMVs was very little compared with the general energy consumption of driving. It was clarified that the new PMV concepts with inward tilting mechanism have sufficient social acceptability from both mandatory points of safety and efficiency.
Highlights
Automobiles have improved the quality of life of human beings, too big an increase in the number of vehicles in use has the potential to spoil the original benefits of automobiles, due to problems such as traffic congestion and lack of parking space in urban areas
In this report, using the multibody dynamics models described in the chapter, we study three
In this report, using the multibody dynamics models described in the chapter, we study concerns regarding personal mobility vehicles (PMVs) with active tilting mechanisms and discuss the social acceptability of inward three concerns regarding PMVs with active tilting mechanisms and discuss the social acceptability of tilting type PMVs
Summary
Automobiles have improved the quality of life of human beings, too big an increase in the number of vehicles in use has the potential to spoil the original benefits of automobiles, due to problems such as traffic congestion and lack of parking space in urban areas. New ultra-small mobility concepts called personal mobility vehicles (PMVs) are attracting attention [1,2]. PMVs with narrow total width are likely to be of the inward tilting type, the same as motorcycles, in order to avoid overturning on turning. The following concerns should be clarified in order to implement new PMV concepts with inward tilting mechanisms in future mobility society. The following is the main concern regarding PMVs with a passive tilting mechanism:. The following are the main concerns regarding PMVs with an active tilting mechanism: Inner wheel lifting on sudden steering input
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