Högskolan i Skövde

In this project the feasibility of installing a LPG feeding system on a conventional petrol engine has been evaluated from the performance, economic and environmental points of view. With the purpose of determining if the LPG fuel is a strong alternative to the petrol or diesel fuels which are the most commonly used.

For the performance study, a number of hypotheses and average values have been used for the calculations, which have provided us some coherent results that gives an approximate idea of how the vehicle is going to work after being equipped with an LPG feeding system.

The economical study has been made using a combination between the kilometers traveled during a year and the type of use that the vehicle is subjected to. To determine the most representative scenarios, comparing these costs with the cost of the conversion kit installation, several conclusions are obtained. As an illustrative example, a typical route between two cities in Sweden has been considered.

The environmental study has been a comparison between LPG and other conventional fuels based on theoretical sources. In this study the different types of emission compounds are described, several statistical data is provided and the bases of the European Auto Oil II Programme are also described.

To illustrate this work a particular car model suitable for this type of conversion has been chosen. Considering the specific characteristics of the engine the most appropriate LPG feeding system have been chosen, including a detailed description of it.

In conclusion, the goals for this project have been successfully achieved. The results are satisfactory and could be used as a basic informative guideline about LPG and its use as an alternative fuel.