Dynamic characteristics mathematical modeling of electro-hydraulic compound governor of fuel system for diesel engines
QU Zhilin
ZHAO Yongchao
YANG Jun
BAI Yun
Abstract：To improve the speed stability and working efficiency of diesel engines during load changes,a mathematical modeling study is conducted on the dynamic characteristics of an electro-hydraulic compound governor for a certain diesel engine fuel system.The composition and working principle of the electro-hydraulic compound governor for fuel system of a diesel engine are analyzed.It is divided into the mechanical speed regulating module,the pneumatic speed regulating module,the power output cylinder module,the buffer piston and the nozzle flapper valve module.According to the specific stress conditions of each part,the mathematical models of the key components of the five major module are established respectively.The transfer function block diagram of the transmission part,the speed control system Y1 and the speed control system Y2 of the electro-hydraulic compound governor are obtained by the mathematical model,which provide a theoretical reference for the performance analysis and design of the electro-hydraulic compound governor.
Keywords：diesel enginesfuel systemelectro-hydraulic compound governormathematical modelingblock diagram
Publication Date：2025-01-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 38-44 )