Although the effect of fuel temperature has been determined
prior to the influence of load, the experimental results for vegetable
oil at varying load will be discussed first to make the structure
of the results section consistent. As reported in Table 4, always two
temperature setpoints have been evaluated when running on vegetable
oil with a certain load. The required injection pressures were
about 10% higher compared to those for diesel, which is a combined
effect of the lower heating value and higher density of vegetable
oil (see Table 3)