EN
The paper presents introduction to the research on possible supplying ship diesel engines with mixtures ofdiesel oils and vegetable oils or their esters with accounting for ecological aspects, i.e. exahust gas purity.Characterisitics of vegetable oils and their esters are compared with those of diesel oils; some consequences of their application to diesel engines, mainly for their working process and exhaust gas content, areindicated. Also, influence of combusting their mixtures with diesel oils are discussed in the same context.Scope of the planned research project is shortly presented