Title:
多気筒内燃機関用の水冷式シリンダヘッド
Document Type and Number:
Japanese Patent JP2007530851
Kind Code:
A
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.
Inventors:
Paul Michael
Ickinger Frank
Ickinger Frank
Application Number:
JP2007504305A
Publication Date:
November 01, 2007
Filing Date:
March 15, 2005
Export Citation:
Assignee:
Dr.Ing.h.c.F.Porsche Aktiengesellschaft
International Classes:
F02F1/38; F01P3/02; F02F1/24; F02F1/36; F02F1/40; F02F1/42; F01P3/16
Domestic Patent References:
| JP2000220451A | 2000-08-08 |
Foreign References:
| DE4116943C1 | 1992-06-17 |
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith