Abstract:

The results of tests of high speed diesel engines used in fishing boats and vessels was presents. The reduction of unit fuel consumption and exhausts toxic emission was possible by implementing preliminary fuel treatment that takes place directly in the fuel injector containing catalytic material. The catalyst works more effectively when fuel is turbulized in crossing fuel passages made in a part of the injector needle. Preliminary fuel treatment results in the average reduction of unit fuel consumption of those engines by 8%, while toxic emission of carbon and nitrogen oxides drops by 15%

Keywords: fishing fleet diesel engines; preliminary fuel treatment.