Mechanism of vehicular periodic operation for optimal fuel economy in free-driving scenarios
Artikel i vetenskaplig tidskrift, 2015

In addition to the fuel-efficient design of vehicles, eco-driving technologies can further reduce the fuel consumption and carbon emissions of road transportation. One of the major issues in eco-driving technologies is how to determine the fuel savings or fuel-optimised operating strategies of the power train. We examine the periodic operation of autonomous vehicles in free-driving scenarios with the purpose of maximising fuel economy. The design of such strategies can be considered to be an optimal control problem, which is proved by -test to have singular arcs because of the S-shaped engine fueling rate. The optimal operations are solved numerically by using the Legendre pseudospectral method, and many are found to demonstrate periodic behaviours, that is, pulse and gliding. In periodic operation, the engine switches between the minimum break specific fuel consumption point and the idling point, while the vehicle speed oscillates between its upper and lower bounds. The formation of periodic operation, as well as some key properties, is analysed and presented.

V8

automobiles

P231

optimal control

UANG CH

Transportation Science & Technology

OPTIMAL CONTROL APPLICATIONS & METHODS

optimal fuel

CRUISE

1987

vehicular periodic operation

fuel economy

engines

Författare

Shengbo Li

Tsinghua University

Xiaosong Hu

Signaler och system, System- och reglerteknik, Reglerteknik

K. Q. Li

Tsinghua University

C. Ahn

Pusan National University

IET Intelligent Transport Systems

1751-956X (ISSN) 1751-9578 (eISSN)

Vol. 9 306-313

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Energi

Ämneskategorier

Farkostteknik

Reglerteknik

DOI

10.1049/iet-its.2014.0002