Design of an Optically Accessible Intake Manifold for Characterization of Liquid and Gaseous Jets in PFI Operating Conditions

The intake manifold and its components play a key role in the proper formation of air–fuel mixtures suitable for correct engine operation. In this article, starting from original design fitted to an optically accessible spark-ignited engine, new solution was developed so as allow application high-speed imaging fuel jet located between runner valves (Port Fuel Injection). To compare two designs terms overall performance parameters such volumetric efficiency, 0D/1D simulations were performed motored conditions. Measurements at different crankshaft speed values used calibrating line providing boundary Finite Element Analysis (FEM) SolidWorks verify structural strength when operating most critical conditions, i.e., boosted As conclusion, results show that guarantees wider range pressure during stroke, thus expanding possible operative points. This can be obtained without compromising integrity, given predicted safety factors well above acceptable limits even relatively high boost levels.