Optimal powertrain control of a heavy-duty vehicle under varying speed requirements
Optimal powertrain control of a heavy-duty vehicle under varying speed requirements
- Neue Suche nach: Henriksson, Manne
- Neue Suche nach: Flardh, Oscar
- Neue Suche nach: Martensson, Jonas
- Neue Suche nach: Henriksson, Manne
- Neue Suche nach: Flardh, Oscar
- Neue Suche nach: Martensson, Jonas
Reducing the fuel consumption is a major issue in the vehicle industry. In this paper, it is done by formulating a driving mission of a heavy-duty truck as an optimal control problem and solving it using dynamic programming. The vehicle model includes an engine and a gearbox with parameters based on measurements in test cells. The dynamic programming algorithm is solved by considering four specific types of transitions: transitions between the same gear, coasting in neutral gear, coasting with a gear engaged with no fuel injection and transitions involving gear changes. Simulations are performed on a driving cycle commonly used for testing distribution type of driving. In order to make sure that the truck does not deviate too much from a normal way of driving, restrictions on maximum and minimum allowed velocities are imposed based on statistics from real traffic data. The simulations show that 12.7 % fuel can be saved without increasing the trip time by allowing the truck to engage neutral gear and make small deviations from the reference trajectory.
Dokumentinformationen
Optimal powertrain control of a heavy-duty vehicle under varying speed requirements
2017-10-01
241281 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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