An Experimental Assessment of Compression Ratio and Evaluation of Aluminum Cylinder Head in Bi-Fuel(Gasoline+CNG) Engines

The first step in dealing with behavior of an engine on NG mode is the installation of a suitable gas fueling system on the engine. Two generations of gas fueling systems which were studied and installed on research engine are: Mixer type and Sequential system type. The results included performance, emissions and fuel consumption, were recorded and analyzed. The results showed that the sequential gas fueling system is better than mixer type. The power loss in mixer type is higher than the other one. On the other hand fuel consumption and the level of emissions in multi-point sequential gas system are very low