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Study of the performance of a four cylinder hydrogen-fuelled internal combustion engine

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Barrett, DS (2007) Study of the performance of a four cylinder hydrogen-fuelled internal combustion engine. Research Master thesis, University of Tasmania.

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Abstract

Due to the depletion of fossil fuel resources arid the potential consequences of climate
change due to fossil fuel use, much effort has been put into the search for alternative
fuels for transportation. Although there are several potential alternative fuels which
have low impact on the environment, none of these fuels have the ability to be used as
the sole "fuel of the future". One fuel which is likely to become a part of the over all
solution to the transportation fuel dilemma is hydrogen.
Internal combustion engines which are fuelled by gasoline are well known within
society and the scientific community. Although information is available within the
scientific community regarding the operation of hydrogen fuelled internal combustion
engines, such information is relatively scarce when compared with the sheer volume
of information which is available for gasoline fuelled internal combustion engines.
This work covers the conversion of a standard small car to be fuelled by hydrogen.
The car was modified in such a way that it could be operated on either gasoline or
hydrogen at the choice of the driver. The car which was chosen was a Toyota Corolla
hatchback.
This thesis outlines the design process which was undertaken for conversion of the car
to be fuelled by hydrogen. Integrated within the design of the converted vehicle are
systems for the measurement of all major engine operation parameters. Within the
scope of this project, a new inlet manifold, and hydrogen fuel injection and storage
systems were devised. Integral to these systems is the hydrogen leak detection safety
system, which helps to ensure the safe operation of the vehicle at all times.
Also covered are the solutions found for the elimination of backfire, minimisation of
exhaust emissions and the maximisation of both power and efficiency. These
competing factors were considered for each of the programmed operating conditions
for the entire useful operating range of the vehicle's engine. Following this, a
comparison was made between the various competing requirements for operation on
gasoline and hydrogen fuel. Significant reductions in the levels of all exhaust gas
pollutants were found when the engine was operated on hydrogen. However, the
power output of the engine while operated on hydrogen was significantly less than
that of the gasoline fuelled engine.
This work is a step toward a full understanding of hydrogen-fuelled engines, their
performance and their associated environmental benefits.

Item Type: Thesis (Research Master)
Copyright Holders: The Author
Copyright Information:

Copyright 2007 the Author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
would be pleased to hear from the copyright owner(s).

Additional Information:

No access or viewing until the expressed permission of the University of Tasmania is given. Thesis (MEngSc)--University of Tasmania, 2007. Includes bibliographical references

Date Deposited: 04 Feb 2015 23:33
Last Modified: 16 Feb 2017 00:27
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