Abstract: Based on dynamometer test cycles or plain motorway operation, heavy truck hybridisation must be considered as uneconomic. In mountainous regions, micro or mild parallel hybridisation of heavy load utility vehicles can result in considerable fuel consumption savings as well as additional benefits. Additional electric power and battery size are still critical design parameters as well as critical cost factors considering the limited depreciation time. Based on vehicle model simulations, this contribution quantifies fuel consumption savings, recuperation energy harvesting and battery requirements for different truck sizes with test cycles based on realistic route topography.
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