In which one of the following four-stroke cylinder arrangements will the intake and exhaust valves open downward into the combustion chamber?

In the I-type cylinder head, the intake and exhaust valves are positionedvertically at the top of the cylinder head. Both valves move down into thecombustion chamber to open. This type of cylinder head is used in overheadvalve (OHV) engines, which are found most often in automobiles.ANSWERS: I-type