Air-cooled multi-cylinder internal combustion engine
AssigneeRaychem Corporation
InventorsRobert Binder, Michael Beer
Life of this patent
Estimating the term…
Abstract
An air-cooled multi-cylinder internal combustion engine includes cylinder heads cast together in a cylinder head casting; the cylinder heads are cooled from the inside by an S-shaped air flow extending between the valves. The cooling air thereby flows-in through an inlet channel at the inlet side of the cylinder heads, is deflected through 90.degree. in a central connecting channel and after a once-more 90.degree. deflection flows into the atmosphere through outlet channels which are formed between the individually cast exhaust gas outlet channels.
Claims12
An air-cooled multi-cylinder internal combustion engine, comprising a cylinder head with two longitudinal sides forming an inlet side and an exhaust side, the cylinder head of a cylinder row forming a structural part, inlet channels leading to its inlet valves and exhaust channels leading away from the exhaust valves being cast-on at the inlet and exhaust side of the structural part, cooling air flowing into the cylinder head through inlet channel means at the inlet side, being deflected inside of the cylinder head in the longitudinal direction of the internal combustion engine by connecting channel means and, after a further deflection, flowing out through outlet channel means at the outlet side of the cylinder head,
- in which each cylinder row includes three cast-together cylinder heads, the cooling air being conducted into the two outer cylinder heads in two air streams at the two narrow sides of the three cast-together cylinder heads, the two air streams being deflected oppositely to one another in the direction toward the center cylinder head, being conducted between the valves and being guided into the atmosphere through two outlet channel means each at the exhaust side of the cylinder heads.
An air-cooled multi-cylinder internal combustion engine, comprising a cylinder head with two longitudinal sides forming an inlet side and an exhaust side, the cylinder head of a cylinder row forming a structural part, inlet channels leading to its inlet valves and exhaust channels leading away from the exhaust valves being cast-on at the inlet and exhaust side of the structural part, cooling air flowing into the cylinder head through inlet channel means at the inlet side, being deflected inside of the cylinder head in the longitudinal direction of the internal combustion engine by connecting channel means and, after a further deflection, flowing out through outlet channel means at the outlet side of the cylinder head,
- wherein each cylinder head includes two inlet and two exhaust valves and associated channels, the outlet channel of the cooling air being constituted between the individually cast, pipe-shaped exhaust channels of the cylinder head.
Dependencies are inferred from the claim text.