Internal combustion engine of the spark ignition type

摘要

In an internal combustion engine having two intake valves on one side and two exhaust valves on the other side of each cylinder, all four valves are displaced towards the exhaust valve side to provide room for a squish zone on the intake valve side. The squish zone is formed in such a way that the mixture is directed or "squished" in the direction of the spark plug to provide turbulence for improving combustion, especially during partial load operation.