This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Phenomenological Traffic Simulation as a Basis for an RDE Development Methodology
Technical Paper
2019-26-0346
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Pollutant emissions and the fuel/energy consumption of vehicles in real driving conditions are increasingly becoming the focus of public and legislative attention. According to the Euro 6d standard, vehicles must comply with emission limits on the test bed and on the road (Real Driving Emissions, RDE). This paper discusses a methodology that enables RDE compliance and robustness testing of engines and propulsion systems using a new phenomenological traffic simulation approach.
The approach is based on virtual test driving and can be used in pure simulation as well as for testing at test beds based on the road-to-rig concept. A real route is digitized and a vehicle model (digital twin) of the target vehicle is built that models the driving resistances and vehicle dynamics properties of the real car. Finally, a virtual driver (driver model) drives the vehicle model on the digitized route considering also traffic objects, road signs and traffic lights. In order to take a diverse range of traffic situations into account, a phenomenological traffic simulation approach was developed that does not require a definition of traffic objects.
The traffic situations are modeled using an indirect target speed input for the driver model by means of additional road signs on the route. Within these boundary conditions, the driver model decides on the dynamics with which the virtual vehicle is driven through traffic. The traffic situations are modeled using route sections that originate from a real driving database. These sections are classified, weighted in terms of traffic density and route type, and distributed along the digitized route.
In contrast to previous approaches, this method allows for a flexible and realistic generation of real driving scenarios taking into account the physics of the vehicle and the 3-D road characteristics as well as the driver behavior. The results obtained with this approach show a very good correlation with real driving measurement data.
Recommended Content
| Technical Paper | Driver Behaviour During Braking |
| Technical Paper | Improvement of Fuel Consumption By Controlled Passage Through Traffic Signals |
Authors
Topic
Citation
Petters, J., Gao, G., Donn, C., and Zulehner, W., "Phenomenological Traffic Simulation as a Basis for an RDE Development Methodology," SAE Technical Paper 2019-26-0346, 2019, https://doi.org/10.4271/2019-26-0346.Also In
References
- Khalfan , A. , Andrews , G. , and Li , H. Real World Driving: Emissions in Highly Congested Traffic SAE Technical Paper 2017-01-2388 2017 10.4271/2017-01-2388
- Albers , A. , Matros , K. , Behrendt , M. , Henschel , J. et al. Maneuver-Based Analysis of Starting-Systems and Starting-Strategies for the Internal Combustion Engine in Full Hybrid Electric Vehicles SAE Int. J. Alt. Power. 4 1 58 66 2015 https://doi.org/10.4271/2014-01-2901
- Kobayashi , M. and Donn , C. Fusion of Simulation and Testing within the Automotive Development Process Using an Open Integration and Test Platform JSAE Annual Congress 2015
- 2018
- Gerstenberg , J. , Hartlief , H. , and Tafel , S. Introducing a Method to Evaluate RDE Demands at the Engine Test Bench 16th Stuttgart International Symposium 2016
- 2016
- 2016
- Donateo , T. , Giovinazzi , M. , and Tamborrino , A. Reproducing Real World Emission Tests with a Traffic Simulator SAE Technical Paper 2018-37-0001 2018 10.4271/2018-37-0001
- Sukennika , P. , Lohmiller , J. , and Schlaich , J. Simulation-Based Forecasting the Impacts of Autonomous Driving International Symposium of Transport Simulation (ISTS’18) and the International Workshop on Traffic Data Collection and Its Standardization (IWTDCS’18) Ehime, Japan 2018
- Ali , A. , Eric , B. , and Soheil , S. Using Large Driving Record Samples and a Stochastic Approach for Real-World Driving Cycle Construction: Winnipeg Driving Cycle Transportation Science 48 2 Nov. 28, 2012