Internal combustion engine e.g. petrol engine, for use in motor vehicle, has two working cylinders, where inlet and outlet channels of different cylinders have different three-dimensional geometric forms

摘要

The engine has a cylinder head (10), and two working cylinders, where inlet channels (12) and outlet channels of the cylinders are formed in the cylinder head. The inlet and outlet channels of the different cylinders have different three-dimensional geometric forms. An inlet valve is attached to each inlet channel, and is attached to a valve seat in a closed condition. The valve seat is formed with a valve seat twist chamfer, which is differently formed by the appropriate inlet channels of the different cylinders.