An existing fuel cell hybrid distribution truck, built for demonstration purposes, is used as a case study to investigate the effect of stack (kW) and battery (kW, kWh) sizes on the hydrogen consumption of the vehicle. Three driving cycles, the NEDC for Low Power vehicles, CSC and JE05 cycle, define …

In opdracht van het Expertise centrum zal in 2016 een Sustainable Urban Vehicle gebouwd worden. Het is de bedoeling dat er gekwantificeerde groene concepten ontwikkeld worden alvorens een prototype gemaakt kan worden. In dit vroege stadium van het project is gekeken naar de belasting van brandstof, …

A driving cycle defines the speed profile as requirement for a propulsion systems or vehicles. As a single driving cycle can hardly be considered representative for all situations a vehicle will experience, attempts are made to classify driving cycles, using techniques as fuzzy logic, statistics and …

Fuel cell hybrid power trains comprise an energy storage to supply peaks in the power demand and to facilitate regenerative braking. In terms of control systems, the presence of storage provides additional freedom to minimize the vehicle’s fuel consumption. In a previous paper [1] an analytical solution …

International entrepreneurship is an important vehicle for firms to reap benefits from their high productivity levels and from economies of scale by reaching new customers. International enterprises tend to be larger and more innovative, but a key question of causality remains disputed in the international …

Veel ruimtelijke vraagstukken, zoals volkshuisvesting en wateropslag, worden steeds vaker op regionaal niveau aangepakt. Planning en beleidsontwikkeling nemen echter veel tijd in beslag. Dit komt deels door gebrek aan ervaring, maar ook door het toenemend aantal partijen waarmee rekening moet worden …

One way to reduce the fuel consumption to payload ratio of heavy vehicle combinations is to reduce the empty trailer weight. This requires an understanding of the vehicle structure, assembly techniques and production process, and of special materials (e.g. high strength steel) with emphasis on strength …

The paper discusses the derivation of test data for three tractor-semitrailer combinations, to be used for strength and durability analysis of semi-trailers with the ultimate goal to reduce the semitrailer mass. Mathematical relationships have been used to transfer these data to representative loading …

Optimization routines for battery, supercap and fuel cell stack in a fuel cell based propulsion system face two problems: the tendency to cycle beating and the necessity to maintain identical amounts of stored energy in battery and supercap at the start and end of the driving cycle used in the simulation. …