Improvement of fuel supply characteristics in small diesels

Abstract

Currently, a small diesel engine up to 10 kW is widely used as a universal autonomous source of mechanical energy for driving equipment for various purposes. The efficiency of a diesel engine is largely determined by the characteristics of the fuel supply system. For the most part, low-power diesel engines are equipped with traditional direct-acting, split-type fuel systems with spool control of cyclic fuel supply. Based on the experience of improving modern transport diesel engines, as ways to improve the performance of small diesel engines, one can consider increasing the fuel injection pressure into the cylinder and using electronic fuel cycling control.

Based on the results of modeling the fuel supply process, the article shows the possibility of increasing fuel injection pressures by introducing a high-pressure fuel pump with valve control of cyclic fuel supply into the fuel system of a small diesel engine of high-speed forcing.