JPH01142526U - - Google Patents
Info
- Publication number
- JPH01142526U JPH01142526U JP3762388U JP3762388U JPH01142526U JP H01142526 U JPH01142526 U JP H01142526U JP 3762388 U JP3762388 U JP 3762388U JP 3762388 U JP3762388 U JP 3762388U JP H01142526 U JPH01142526 U JP H01142526U
- Authority
- JP
- Japan
- Prior art keywords
- recess
- groove
- plug
- spark
- plug pocket
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の第１実施例に係る筒内直接噴
射式火花点火機関燃焼室の平面図、第２図は第１
図の燃焼室の―線に沿う断面図、第３図は第
１図の燃焼室の―線に沿う断面図、第４図は
本考案の第２実施例に係る筒内噴射式火花点火機
関燃焼室の断面図、である。
２……燃焼室、６……ピストン、１０……凹部
、１２……（凹部１０の）底面、１４……（凹部
１０の）側面、１６……燃料噴射弁、１８……（
凹部１０の）外周壁部、２０……点火栓、２２…
…プラグポケツト、２４……溝、２４ａ……（溝
２４の）底面、２４ｂ……（溝２４の）側面、２
４ｃ……（溝２４の）底面、２４ｄ，２４ｅ……
（溝２４の）側面、２６……計量部、２８……噴
射燃料があたる位置、３０……噴射燃料、３２…
…スワールの流れ。
FIG. 1 is a plan view of a combustion chamber of an in-cylinder direct injection spark ignition engine according to a first embodiment of the present invention, and FIG.
FIG. 3 is a sectional view of the combustion chamber in FIG. 1 taken along the line, and FIG. 4 is a direct injection spark ignition engine according to the second embodiment of the present invention. FIG. 3 is a cross-sectional view of a combustion chamber. 2...Combustion chamber, 6...Piston, 10...Recess, 12...Bottom surface (of the recess 10), 14...Side surface (of the recess 10), 16...Fuel injection valve, 18...(
) outer peripheral wall portion of the recessed portion 10, 20... spark plug, 22...
...Plug pocket, 24...Groove, 24a...Bottom surface (of groove 24), 24b...Side surface (of groove 24), 2
4c...(groove 24) bottom surface, 24d, 24e...
Side surface (of the groove 24), 26... Measuring part, 28... Position where the injected fuel hits, 30... Injected fuel, 32...
...Swirl flow.
Claims (1)
れ、前記凹部の側壁部には、該凹部に開口させて
プラグポケツト部が形成されているとともに、凹
部壁面に少なくとも一部が噴射され蒸発した燃料
をスワールにのせてプラグポケツト部に臨む点火
栓側に誘導する周方向に延びる溝が形成されてい
る筒内直接噴射式火花点火機関燃焼室において、
前記溝の少なくとも一部に、噴射された燃料があ
たる位置側から前記プラグポケツト側に向つて溝
断面積が徐々に小となる計量部が形成されている
ことを特徴とする筒内直接噴射式火花点火機関燃
焼室。 A plug pocket is defined by a recess formed at the top of the piston, and a plug pocket is formed in the side wall of the recess to open into the recess, and at least a portion of the fuel is injected and evaporated into the wall of the recess. In the combustion chamber of an in-cylinder direct injection spark ignition engine, a groove is formed that extends in the circumferential direction to place the spark on the swirl and guide it toward the spark plug side facing the plug pocket.
An in-cylinder direct injection type characterized in that a metering portion is formed in at least a portion of the groove, the groove cross-sectional area gradually decreasing from the side where the injected fuel hits toward the plug pocket side. Spark ignition engine combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3762388U JPH07666Y2 (en) | 1988-03-24 | 1988-03-24 | In-cylinder direct injection spark ignition engine combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3762388U JPH07666Y2 (en) | 1988-03-24 | 1988-03-24 | In-cylinder direct injection spark ignition engine combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01142526U true JPH01142526U (en) | 1989-09-29 |
| JPH07666Y2 JPH07666Y2 (en) | 1995-01-11 |
Family
ID=31264203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3762388U Expired - Lifetime JPH07666Y2 (en) | 1988-03-24 | 1988-03-24 | In-cylinder direct injection spark ignition engine combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07666Y2 (en) |
-
1988
- 1988-03-24 JP JP3762388U patent/JPH07666Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07666Y2 (en) | 1995-01-11 |
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