Four-valve cylinder head of a four-stroke engine

Details Four-valve cylinder head of a four-stroke engine Four-valve cylinder head of a four-stroke engine

1982-04-20

1984-11-27

Feinberg, Craig R.

Internal-combustion engines

Cooling

Air-cooled

123193H, F02P 106

Patent

active

044845421

ABSTRACT:
A four-valve cylinder head of a four-stroke engine has a body formed with an enlarged material cross-section portion located above a combustion chamber to increase heat exchange surface in the cylinder head. For cooling the cylinder head the latter is further formed with a straight passage receiving cooling air therethrough. The passage includes a central portion, a funnel-shaped portion communicating with the central portion, and a conical suction portion also communicating with the central portion. Cooling air is introduced into the interior of the head through the funnel-shaped portion and is sucked away through the conical suction portion.

REFERENCES:
patent: 2725045 (1955-11-01), Flatz et al.

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