Optimal Use of HLA Systems Università degli Studi dell'Aquila

Format:

Conference/Event

Author/Creator:

Chiappini, Chiappini, author.

Conference Name:

10th International Conference on Engines & Vehicles (2011-09-11 : Naples, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

In the recent years, a new interest on kinetic energy recovery (KER) of vehicles arose. In USA, car manufacturers (Ford, Sheep and others) developed research programs on the use of hydraulic devices to realize KER system, also with economical support of government body (EPA). In 2002 Ford built a very interesting prototype (Ford Tonka) using such recovery device (named HLA, Hydraulic Launch Assist), achieving very interesting improvements of fuel economy and pollution, besides increasing of acceleration and making feasible downsizing of thermal engine. Nowadays, also D.I.M.E.G. of University of L'Aquila (Italy) is working about HLA systems and, in order to study its behaviour, a simulation model (named V&HLA-SC) particularly useful to evaluate its energetic efficiency and performance has developed. The studies here reported show that the system efficiency may be modified by different ways of driving a mission that is characterized by different braking and acceleration time, mantaining constant elapsed time and covered distance. In such a way, optimal driving strategies and/or control system laws may be suggested to optimize the cyclic process of recovering and reusing kinetic energy, id est to achieve the optimal use of HLA system, especially in urban areas

Notes:

Vendor supplied data

Publisher Number:

2011-24-0073

Access Restriction:

Restricted for use by site license