INTERNAL COMBUSTION ENGINE AND CYLINDER HEAD THEREFOR

摘要

PCT No. PCT/GB82/00065 Sec. 371 Date Oct. 14, 1982 Sec. 102(e) Date Oct. 14, 1982 PCT Filed Feb. 26, 1982 PCT Pub. No. WO82/02924 PCT Pub. Date Sep. 2, 1982.An internal combustion engine has a cylinder head with a cardiodal recess with inlet and outlet apertures in which inlet and outlet valves are positioned. A cusp extending between the apertures imparts a swirling motion to gases entering the recess through the inlet aperture, but extends only about one third of the travel of the inlet valve so that it does not impede the flow of gases when the inlet valve is fully open.