A Constrained Eco-Routing Strategy for Hybrid Electric Vehicles Based on Semi-Analytical Energy Management

The accuracy of the modern navigation and traffic information systems has increased noticeably. This offers the opportunity of improving the standard powertrain energy management of hybrid electric vehicles (HEVs) by making use of predictive information about the upcoming route. Eco-routing for HEVs aims to optimize fuel consumption by deciding the best route and when to use or recover electrical power based on topological and traffic information. In this work, a simple predictive speed model is used to derive a fast semi-analytical solution of the powertrain energy management. The predicted fuel consumption on each road segment is a function of the desired trade-off between fuel economy and battery use. This modeling complexity is addressed by introducing a novel road network model which takes into account the feasible battery charge variation at road segment level. Also, the routing of HEVs adds several intrinsic constraints and complexity to the classical shortest path problem (SPP). A relaxation of the constrained SPP is proposed to reduce computation time and thus increase user acceptance.

[1]  Giovanni De Nunzio,et al.  Bi-objective eco-routing in large urban road networks , 2017, 2017 IEEE 20th International Conference on Intelligent Transportation Systems (ITSC).

[2]  Konrad Reif,et al.  On the computation of the energy-optimal route dependent on the traffic load in Ingolstadt , 2013 .

[3]  Luigi Di Puglia Pugliese,et al.  A survey of resource constrained shortest path problems: Exact solution approaches , 2013, Networks.

[4]  Nicos Christofides,et al.  An algorithm for the resource constrained shortest path problem , 1989, Networks.

[5]  Ratna Babu Chinnam,et al.  Optimal Routing for Plug-In Hybrid Electric Vehicles , 2017, Transp. Sci..

[6]  Antonio Sciarretta,et al.  Optimal Ecodriving Control: Energy-Efficient Driving of Road Vehicles as an Optimal Control Problem , 2015, IEEE Control Systems.

[7]  Yu Nie,et al.  An Ecorouting Model Considering Microscopic Vehicle Operating Conditions , 2013 .

[8]  Refael Hassin,et al.  Approximation Schemes for the Restricted Shortest Path Problem , 1992, Math. Oper. Res..

[9]  Ron Widyono The Design and Evaluation of Routing Algorithms for Real-time Channels , 1994 .

[10]  Martin Strehler,et al.  Energy-efficient shortest routes for electric and hybrid vehicles , 2017 .

[11]  Lei Zhu,et al.  Navigation API Route Fuel Saving Opportunity Assessment on Large-Scale Real-World Travel Data for Conventional Vehicles and Hybrid Electric Vehicles: Preprint , 2017 .

[12]  Antonio Sciarretta,et al.  Design and Control Co-Optimization for Hybrid Powertrains: Development of Dedicated Optimal Energy Management Strategy , 2016 .

[13]  Matthew William Fontana,et al.  Optimal routes for electric vehicles facing uncertainty, congestion, and energy constraints , 2013 .