Application of Alcohol Fumigation to Diesel Tractor Engine (Part 1)

Development of Dual-Fuel Control System

Abstract

The utilization of alcohol as diesel tractor engine fuel was investigated. A personal computer based control system was developed to control the flow rates of gas oil and alcohol. With this control system it was able to use alcohol for a diesel engine in various operating conditions and achieve the important control requirements such as engine speed, torque curve setting and engine stop.
The alcohol can be supplied up to more than 50 percent of the fuel energy to the engine at full load. This system with the digital PID controller indicated satisfactory performance with quick response to load changes. In case of changing from 4/4 load to no load in 2sec, the maximum speed difference was approximately 13.5 percent and the settling time was about 5sec.