JPH01148024U - - Google Patents
Info
- Publication number
- JPH01148024U JPH01148024U JP4455588U JP4455588U JPH01148024U JP H01148024 U JPH01148024 U JP H01148024U JP 4455588 U JP4455588 U JP 4455588U JP 4455588 U JP4455588 U JP 4455588U JP H01148024 U JPH01148024 U JP H01148024U
- Authority
- JP
- Japan
- Prior art keywords
- intake
- valve
- exhaust
- combustion chamber
- opened
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案の第１の実施例に係る燃焼室を
備えたエンジンの要部縦断面図、第２図は第１図
の―矢視図、第３図は第１の部拡大図、第
４図は第１図の部拡大図、第５図は本考案の第
２の実施例に係る燃焼室の要部縦断面図である。
１……エンジン、５……燃焼室、６……吸気弁
、７……排気弁、１０，１１……バルブシート、
１２，１３……溝、２１……吸気ポート、２２…
…排気ポート。
Fig. 1 is a vertical cross-sectional view of a main part of an engine equipped with a combustion chamber according to a first embodiment of the present invention, Fig. 2 is a view taken along the - arrow in Fig. 1, and Fig. 3 is an enlarged view of the first part. , FIG. 4 is an enlarged view of a portion of FIG. 1, and FIG. 5 is a vertical sectional view of a main part of a combustion chamber according to a second embodiment of the present invention. 1... Engine, 5... Combustion chamber, 6... Intake valve, 7... Exhaust valve, 10, 11... Valve seat,
12, 13...Groove, 21...Intake port, 22...
...exhaust port.
Claims (1)
ートと排気弁により開閉される排気ポートとをそ
れぞれ開口させるとともに、該吸気弁と排気弁を
それぞれポペツト弁で構成し且つ該吸気弁と排気
弁の燃焼室内への突出変位によつて上記吸気ポー
トと排気ポートとが開口されるように構成したエ
ンジンにおいて、上記吸気あるいは排気ポートの
少なくともどちらか一方の外周縁部に、弁径方向
においてバルブシート面の吸・排気弁の閉弁時に
該吸・排気弁と接する位置から吸・排気ポート周
りの燃焼室壁面に跨つて凹入する溝が形成されて
いることを特徴とするエンジンの燃焼室。 An intake port that is opened and closed by an intake valve and an exhaust port that is opened and closed by an exhaust valve are opened on the wall surface of the combustion chamber, and the intake valve and the exhaust valve are each configured with a poppet valve, and the intake valve and the exhaust valve are configured with poppet valves. In an engine configured such that the intake port and the exhaust port are opened by protruding displacement into the combustion chamber, a valve seat surface is provided on the outer peripheral edge of at least one of the intake or exhaust port in the valve radial direction. A combustion chamber for an engine, characterized in that a groove is formed that extends from a position in contact with the intake/exhaust valve when the intake/exhaust valve is closed to spans a wall surface of the combustion chamber around the intake/exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4455588U JPH01148024U (en) | 1988-03-31 | 1988-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4455588U JPH01148024U (en) | 1988-03-31 | 1988-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148024U true JPH01148024U (en) | 1989-10-13 |
Family
ID=31270906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4455588U Pending JPH01148024U (en) | 1988-03-31 | 1988-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01148024U (en) |
-
1988
- 1988-03-31 JP JP4455588U patent/JPH01148024U/ja active Pending