Water-cooled cylinder head for a multicylinder...

Details Water-cooled cylinder head for a multicylinder... Water-cooled cylinder head for a multicylinder...

2006-10-31

2006-10-31

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Cooling

With jacketed head and/or cylinder

Reexamination Certificate

active

07128029

ABSTRACT:
A water-cooled cylinder head is provided for a multicylinder internal-combustion engine having two inlet and outlet valves per cylinder. The cylinder head has a cylinder head cooling space with inflow and outflow openings for the coolant which is integrated in the cylinder head housing and extends above a part-spherical cap forming a combustion chamber volume. Water cooling spaces are formed at least in areas around a receiving opening for a spark plug arranged centrally in the cylinder head housing and around the two outlet valves. The water cooling spaces are mutually connected by way of a common annulus section. At least the common water cooling jacket annulus section has a volume which remains an essentially constant distance from the combustion chamber volume, so that, at least in this area, the wall thickness of the part-spherical combustion chamber cap extends in a uniform manner and to close to the combustion chamber volume.

REFERENCES:
patent: 4690104 (1987-09-01), Yasukawa
patent: 4699092 (1987-10-01), Ruf et al.
patent: 2002/0124815 (2002-09-01), Ishiguro et al.
patent: 4116943 (1992-06-01), None
patent: 1134200 (1968-11-01), None
patent: WO 2004/022961 (2004-03-01), None

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