Examination of the effects of water spray to intake manifold on engine performance

In this study, effect on water injection is examined to understand; what extent a water injection into the cylinder can have a positive effect on engine performance. This study is aimed to develop 1-D combustion model of three-cylinder, four strokes, spark ignited gasoline engine on various engine operating conditions. In the modeling and analyzing process of the engine; AVL Boost program has been employed. Inlet system boundary values were defined by the data coming from the dyno. As a conclusion, at same engine operation, it has been observed that water injection has a positive effect on fuel consumption. Also, cylinder temperature has decreased. As a result of these effects, it is possible to obtain more torque with the similar inlet parameters.