Issues and
Opportunities in
Sustainable Fuel and Vehicle Technologies
Presenter: Mark Ehsani
Abstract:
The ever expanding use of personal vehicles in the world is associated
with the following major problems.
Fuel Consumption: Most
vehicles require liquid fuel, typically derived
from petroleum, which is a finite resource. Worldwide petroleum
production peaked and began its decline starting in 2004 (Deffeyes,
Hubbert’s Peak). The engines in current vehicles are only about
15–20% efficient.
Pollution: In cities, the
tailpipe emissions of vehicles degrade air
quality. Also, the combustion of fossil fuels is implicated in global
warming. In the United States, 20% of carbon dioxide emissions come
from automobiles and 10% from trucks
(http://www.ecobridge.org/content/g_cse.htm).
These problems with vehicles have long been known. There has been
substantial progress in reducing tailpipe emissions using advanced
catalytic converters; however, air quality is still unacceptable in
many cities, primarily due to vehicle emissions.
Unless we take a revolutionary approach, the problems with vehicles
will only get worse. By 2050, the number of vehicles is expected to
increase by 5 times. Currently, the world has 9 people per vehicle, but
by 2050 it is expected to have 2.6 people per vehicle.
In this presentation, new technology trends of the present and
near future will be explored, leading to the need for a viable
automobile and fuel technologies that are sustainable. An
integrated approach is proposed for the automobile that focuses both on
fuel
production and vehicle power train technologies. The result is a new
automobile and energy industry with the following properties:
sustainable fuel supply into the indefinite future, higher efficiency,
better performance, and no net carbon dioxide emissions to the
atmosphere.
Dr. Ehsani reviews some of the technical, commercial, and social
problems and issues that are on the forefront at the present. The
presentation will conclude with comments about the technical realities
versus the public knowledge of these issues.