Mechanism of vehicular periodic operation for optimal fuel economy in free-driving scenarios
Journal article, 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.

CRUISE

fuel economy

engines

UANG CH

OPTIMAL CONTROL APPLICATIONS & METHODS

V8

optimal control

Transportation Science & Technology

P231

optimal fuel

automobiles

vehicular periodic operation

1987

Author

Shengbo Li

Tsinghua University

Xiaosong Hu

Chalmers, Signals and Systems, Systems and control, Automatic Control

K. Q. Li

Tsinghua University

C. Ahn

Pusan National University

IET Intelligent Transport Systems

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

Vol. 9 3 306-313

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Subject Categories

Vehicle Engineering

Control Engineering

DOI

10.1049/iet-its.2014.0002

More information

Latest update

2/28/2018