Diffusion of alternative powertrain concepts in heavy commercial vehicles will start in the upcoming years after electrification and natural gas engines have already been introduced for passenger cars. Numerous quantitative forecasting and technology diffusion models exist for passenger cars but cannot be transferred unchanged to heavy commercial vehicles. A system dynamics model for the diffus...

Within this contribution the optimization of the electric current flow control within a hybrid electric powertrain system and hence its power and energy management strategy is introduced. This contribution describes the control optimization . Power and energy management are methods applied to hybrid electric powertrain systems to be used in modern vehicles. Hereby the electric current flow with...

The cooling system of Series Hybrid Electric Vehicles (SHEVs) is more complicated than that of conventional vehicles due to additional components and various cooling requirements of different components. In this study, a numerical model of the cooling system for a SHEV is developed to investigate the thermal responses and power consumptions of the cooling system. The model is created for a virt...

With the increase in automotive powertrain complexity, an upfront assessment of powertrain capability in meeting its design targets is important early on in the development programs. The optimization of control policy based on powertrain simulation models can facilitate this assessment and establish limits of achievable performance for a given powertrain configuration and parameters. The paper ...

Hybrid Electrical Vehicle (HEV) fuel economy highly depends on power allocation between the different power sources — engine and fuel cell — and the energy storage system(s). A generic global optimization algorithm has been developed to minimize fuel consumption by optimizing the powertrain power flows. This algorithm was applied on a Fuel Cell Hybrid Vehicle, and results were generated for sev...

In this study, a control strategy for the series hybrid electric vehicle (SHEV) powertrain, based on the design of fixed-boundary-layer sliding mode controllers (FBLSMCs) and a battery charge scenario, is presented to enhance engine efficiency as well as extend battery cycle life. An appropriate battery charge scenario is designed to remove surge charge current, keep the battery staying in a hi...

Model-Based Powertrain Control: Many Uses, No abuse — Many meanings exist behind this expression. We have conducted a mini-survey to confirm and describe this diversity. “Models” mainly stands for powertrain-models or Engine Management System (EMS) models. Uses are also very diverse, from upstream design activity to final software validation, through Model In the Loop and Software In the Loop t...

With increasing oil price and mounting environment concerns, cleaner and sustainable energy solutions have been demanded. At present transportation constitutes a large portion of the energy consumed and pollution created. In this work, two hybrid vehicle powertrain technologies were studied, a fuel cell battery hybrid and two internal combustion engine battery/ultracapacitor hybrids. Powertrain...