JPH02139331U - - Google Patents

Info

Publication number
JPH02139331U
JPH02139331U JP4985589U JP4985589U JPH02139331U JP H02139331 U JPH02139331 U JP H02139331U JP 4985589 U JP4985589 U JP 4985589U JP 4985589 U JP4985589 U JP 4985589U JP H02139331 U JPH02139331 U JP H02139331U
Authority
JP
Japan
Prior art keywords
stepped hole
contact surface
hole
cylinder
intake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4985589U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4985589U priority Critical patent/JPH02139331U/ja
Publication of JPH02139331U publication Critical patent/JPH02139331U/ja
Pending legal-status Critical Current

Links

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  • Combustion Methods Of Internal-Combustion Engines (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す一部断面図、
第２図はスワール進行方向を説明するための概念
図、第３図および第４図はそれぞれ本実施例の効
果を説明するための性能曲線図、第５図は面取り
角度と剥離流れとの関係を説明するための図であ
る。 １…シリンダ・ヘツド、２…吸気孔、３…段付
穴、４…リング・シート、５…吸気弁、Ａ，Ａ１
…スワール進行方向、Ｃ…面取り部。 FIG. 1 is a partial sectional view showing an embodiment of the present invention;
Figure 2 is a conceptual diagram for explaining the direction of swirl movement, Figures 3 and 4 are performance curve diagrams for explaining the effects of this example, and Figure 5 is the relationship between the chamfer angle and separation flow. FIG. 1...Cylinder head, 2...Intake hole, 3...Stepped hole, 4...Ring seat, 5...Intake valve, A, A 1
 ... Swirl advancing direction, C... Chamfered portion.

Claims (1)

【実用新案登録請求の範囲】 １ ピストン・ヘツドに対向させられる触火面に
穿設されていて吸気孔に連通される段付孔と、こ
の段付孔に嵌入されていて吸気弁に接触させられ
るバブル・シートを有するシリンダ・ヘツドにお
いて、上記段付孔のスワール進行側縁部に、触火
面に対して２０〜３０°の角度で面取りを施した
ことを特徴とするシリンダ・ヘツド構造。 ２ ピストン・ヘツドに対向させられる触火面に
穿設されていて吸気孔に連通される段付孔と、こ
の段付孔に嵌入されていて吸気弁に接触させられ
るバルブ・シートを有するシリンダ・ヘツドにお
いて、上記段付孔のスワール進行側縁部に、触火
面に対して２０〜３０°の角度であって且つシリ
ンダ中心から吸気弁中心までの距離を半径として
画く円弧に跨って面取りを施したことを特徴とす
るシリンダ・ヘツド構造。[Claims for Utility Model Registration] 1. A stepped hole that is bored in the contact surface facing the piston head and communicates with the intake hole, and a stepped hole that is fitted into the stepped hole and is in contact with the intake valve. 1. A cylinder head structure characterized in that the edge of the stepped hole on the swirl advancing side is chamfered at an angle of 20 to 30 degrees with respect to the contact surface. 2. A cylinder having a stepped hole bored in the contact surface facing the piston head and communicating with the intake hole, and a valve seat fitted into the stepped hole and brought into contact with the intake valve. At the head, the edge of the stepped hole on the swirl advancement side is chamfered across an arc that is at an angle of 20 to 30 degrees to the contact surface and whose radius is the distance from the center of the cylinder to the center of the intake valve. The cylinder head structure is characterized by:
JP4985589U 1989-04-27 1989-04-27 Pending JPH02139331U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4985589U JPH02139331U (en) 1989-04-27 1989-04-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4985589U JPH02139331U (en) 1989-04-27 1989-04-27

Publications (1)

Publication Number Publication Date
JPH02139331U true JPH02139331U (en) 1990-11-21

Family

ID=31567904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4985589U Pending JPH02139331U (en) 1989-04-27 1989-04-27

Country Status (1)

Country Link
JP (1) JPH02139331U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023188881A1 (en) * 2022-03-30 2023-10-05 カワサキモータース株式会社 Two-stroke engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290919A (en) * 1988-05-13 1989-11-22 Nippon Clean Engine Lab Co Ltd Four-cycle internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290919A (en) * 1988-05-13 1989-11-22 Nippon Clean Engine Lab Co Ltd Four-cycle internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023188881A1 (en) * 2022-03-30 2023-10-05 カワサキモータース株式会社 Two-stroke engine
JP2023148340A (en) * 2022-03-30 2023-10-13 カワサキモータース株式会社 2 stroke engine

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