Experimental Investigation of Combustion Characteristics on Opposed Piston Two-Stroke Gasoline Direct Injection Engine

The combustion characteristics of an opposed-piston two-stroke gasoline engine are investigated with experiment. energy conversion and exergy destruction analyzed the organization method process is summarized. effects phase difference, scavenging pressure, injection timing, ignition dual spark plug scheme on performance discussed, respectively. heat release rate consistent conventional engine. With increase motion efficiency decreases overmuch residual exhaust gas not beneficial to process. Meanwhile, faster relative velocity near inner dead center enhances cylinder working volume change rate, which leads rapid decline in-cylinder pressure temperature. 15 °CA difference improves effectively. When 0.12 MPa, improved at medium-high speed conditions. delay flame developing period gradually, burning then increases. may reach minimum value when advance angle 100 °CA. increases 20 Notably, flat-top piston structure should be matched plug, load