Title:
シリンダカバ-のボア-ク-ル穴部補修方法
Document Type and Number:
Japanese Patent JP4182571
Kind Code:
B2
Abstract:
A method of repairing a cylinder head of a water cooled internal combustion engine that has damage to the boundary wall between a cooling water passage and the combustion chamber. According to the method. the boundary wall B located between a cooling water passage and a combustion chamber and including a crack is cut away from a cylinder head until the cut reaches a depth of one half the cross section of the cooling water passage. Then, a half-pipe portion. having a semicircular cross section that is equal in size to one-half the cross section of the cooling water passage is fixed in the cylinder head from which the boundary wall B has been removed such that an inner surface of the half-pipe may serve to form a cooling water passage after repair. With the use of the above method, the repair operation is completed easily with a low cost because the boundary wall B has only to be cut away to a shallow depth. Further, the use of a half-pipe portion, together with the remainder of the original cooling water passage ensures that the cooling water passage will be restored to its original state.
Inventors:
Kazuo Azuma
Application Number:
JP29963798A
Publication Date:
November 19, 2008
Filing Date:
October 21, 1998
Export Citation:
Assignee:
Toei Engineering Co., Ltd.
International Classes:
B23P6/04; B23P6/02; F02F1/40; F01P3/02; F02F1/00; F02F1/10; F02F1/38; F02F1/24
Domestic Patent References:
| JP3022654U |
Attorney, Agent or Firm:
Shoji Yamamoto