JPH02102445U

JPH02102445U -

Info

Publication number: JPH02102445U
Application number: JP891189U
Authority: JP
Priority date: 1989-01-28
Filing date: 1989-01-28
Publication date: 1990-08-15

Description

[Brief explanation of drawings]

第１〜第６Ａ図は本考案の第１実施例を示し、
第１図はシリンダヘツドの縦断正面図で、第２図
−線断面図に対応し、第２図は第１図−
矢視図、第３図はライナの平面図、第４図は第３
図−線断面図、第５図は第４図−線断面
図、第５Ａ図は第５図ａ矢示部の拡大図、第５
Ｂ図は第５Ａ図ｂ矢示部の拡大図、第６図は第
４図−線断面図、第６Ａ図は第６図ａ矢示
部の拡大図、第７図は第５Ａ図に対応する本考案
の第２実施例の拡大断面図、第８、第９図は本考
案の第３実施例を示し、第８図はシリンダヘツド
の縦断正面図で、第９図−線断面図に対応し
、第９図は第８図−矢視図である。Ｒ……分岐領域、ａ_１，ａ_２……内壁部（高強
度要求部位）、ｗ……ウイスカ、１……シリンダ
ヘツド、４……吸気ポート、７……排気ポート、
８……シリンダヘツド本体、９，９_１，９_２……
ライナ（部分強化セラミツク部材）、１３_１，１
３_２……凹所（高強度要求部位）。 1 to 6A show a first embodiment of the present invention,
Figure 1 is a longitudinal sectional front view of the cylinder head, which corresponds to the line sectional view in Figure 2.
The arrow view, Figure 3 is the plan view of the liner, Figure 4 is the liner
Figure 5 is a sectional view taken along the line in Figure 4, Figure 5A is an enlarged view of the section indicated by arrow a in Figure 5,
Figure B is an enlarged view of the part indicated by arrow b in Figure 5A, Figure 6 is a sectional view taken along the line of Figure 4, Figure 6A is an enlarged view of the part indicated by arrow a in Figure 6, and Figure 7 corresponds to Figure 5A. 8 and 9 are enlarged sectional views of the second embodiment of the present invention, and FIG. 8 is a longitudinal sectional front view of the cylinder head, and FIG. 9 is a sectional view taken along the line Correspondingly, FIG. 9 is a view in the direction of FIG. 8. R...Branch region, _a1 , _a2 ...Inner wall portion (high strength required area), w...Whisker, 1...Cylinder head, 4...Intake port, 7...Exhaust port,
8...Cylinder head body, 9, 9 ₁ , 9 ₂ ...
Liner (partially reinforced ceramic member), 13 ₁ , 1
3 ₂ ... Concavity (part requiring high strength).

Claims

[Claims for Utility Model Registration] (1) A partially reinforced ceramic member characterized in that a portion requiring high strength is reinforced by compounding whiskers in the portion. (2) A partially reinforced ceramic member characterized in that a region requiring high strength is strengthened by refining the structure of the region and compounding whiskers in the region. (3) A partially reinforced ceramic member characterized in that a region requiring high strength is strengthened by dispersing a metal oxide in the grain boundaries of the region and compounding whiskers in the region. (4) The portion according to paragraph (1), (2) or (3), wherein the partially reinforced ceramic member is a hollow body for casting, and the portion is a recess existing in the peripheral wall of the hollow body. Reinforced ceramic parts. (5) The hollow body is a manifold liner forming at least one of a manifold intake port and a manifold exhaust port of a cylinder head for an engine, and the recess is located in a branch area of the manifold liner. The partially reinforced ceramic member according to item (4). (6) The partially reinforced ceramic member according to item (5), wherein in the recess, only the inner wall portion facing at least one of the intake port and the exhaust port is reinforced. (7) The hollow body is a manifold-shaped liner that forms at least one of an intake passage of an intake manifold for an engine and an exhaust passage of an exhaust manifold, and the recess is the fourth hollow body located in a branch area of the manifold-shaped liner. ) The partially reinforced ceramic member described in item ). (8) The partially reinforced ceramic member according to item (7), wherein in the recess, only the inner wall portion facing at least one of the intake passage and the exhaust passage is reinforced. (9) No. (1), No. (2), No. (3), No. 4, No. 5 using alumina titanate as a ceramic raw material.
), the partially reinforced ceramic member according to item (6), item (7) or item (8).