The document summarizes a seminar report on the green engine, which is an evolution of the internal combustion engine designed to reduce emissions and increase efficiency. It has a six phase working principle that allows for improved fuel mixing and combustion. The green engine is smaller, lighter, and produces near-zero emissions compared to conventional engines. It can run on multiple fuel types and has applications in automobiles, aircraft, power generation, and more. The green engine represents an innovative new engine technology that could help address issues of pollution and energy sustainability.