Abstract
During diesel engine operation, a tendency for the engine not to achieve a steady idling speed has often been observed. During idling speed the engine tends to either race or stall as a result of poor and incorrect metering of the fuel, which is required for the combustion process and if severe, the engine will stop firing completely. 111 this research an investigation was made to establish knowledge on diesel engine stability operated at low speeds. The influence of a governor of an engine in the control of the engine speeds has also been investigated. In order to obtain information on the engine operation condition, use has been made of a mathematical model that incorporates the engine, governor and a tachometer. A simulation was conducted by solving the system's differential equations using a fourth order Runge-Kutta numerical integration method written in C code computer programs. The results obtained show the stability of the engine-governor system operated at low speed to be stable. When the engine was subjected to some parameter variations the engine showed some sign of instability occurring at increased disturbance intensities. Based on the obtained results an enhanced knowledge has been obtained giving an indication on how the existing mechanical engine speed governors design features could be improved to achieve engine stability at low speeds.
Recommended Citation
Mhilu, C. (2006). INVESTIGATION OF THE STABILITY OF ENGINE – GOVERNOR SYSTEM OPERATED AT LOW SPEEDS. Tanzania Journal of Engineering and Technology (TJET), 29(1), 98-107. https://doi.org/https://doi.org/10.52339/tjet.v29i1.380
Publisher Name
University of Dar es Salaam