Method and device for forming a turbulent fuel-air mixture in the combustion chamber of each cylinder of an internal combustion engine controlled with valve timing

摘要

In an internal combustion engine, which is operated with gaseous fuel, each intake passage has an intake valve, and a gas-injection nozzle is arranged in the end region of each intake passage outside of the combustion chamber. The gas-injection nozzle is used to form a coherent gas spray, which is injected at a high velocity directly into the combustion chamber in the cylinder. The gas spray is injected intermittently and is coordinated with the opening movement of the intake valve. The gas spray of gaseous fuel is first mixed with the air in the combustion chamber, where the high kinetic energy of the gas spray produces a high turbulence and results in an efficient mixing of the fuel with the air.