Pure plant oil was closest to the diesel engine at the time of its invention. It is well known that Rudolf Diesel himself displayed a diesel engine running on groundnut oil at the Paris world exhibition in 1896. Up to now the quality of fuel and combustion engines increased constantly. Sustainable plant oils are an affordable, safe, social and environmentally friendly fuel supply, especially at countries of its origin, not only for generators and tractors but also for transport vehicles.
Shanghai-Paper, IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) 2017. The complete article can be found in the appendix.