JPH01136672U - - Google Patents
Info
- Publication number
- JPH01136672U JPH01136672U JP3355788U JP3355788U JPH01136672U JP H01136672 U JPH01136672 U JP H01136672U JP 3355788 U JP3355788 U JP 3355788U JP 3355788 U JP3355788 U JP 3355788U JP H01136672 U JPH01136672 U JP H01136672U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- injection
- pressure
- injection nozzle
- check valve
- 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
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims 6
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Description
第１図はこの考案の実施例を示す概略構成図、
第２図は同じくチエツクバルブの断面図、第３図
は同じく作動特性図、第４図は他の実施例を示す
要部構成図、第５図は制御に使用するマツプ、第
６図は制御動作を説明するフローチヤート、第７
図は従来の技術を説明する作動特性図である。
４……噴射ポンプ、５……噴射ノズル、６……
噴射パイプ、７……チエツクバルブ、８……バイ
パスパイプ、９……リターンパイプ、１５……点
火プラグ。
FIG. 1 is a schematic configuration diagram showing an embodiment of this invention.
Fig. 2 is a cross-sectional view of the check valve, Fig. 3 is an operational characteristic diagram, Fig. 4 is a main part configuration diagram showing another embodiment, Fig. 5 is a map used for control, and Fig. 6 is a control diagram. Flowchart explaining the operation, No. 7
The figure is an operational characteristic diagram explaining the conventional technology. 4... Injection pump, 5... Injection nozzle, 6...
Injection pipe, 7...Check valve, 8...Bypass pipe, 9...Return pipe, 15...Spark plug.
Claims (1)
る直接噴射式火花点火エンジンにおいて、燃料噴
射ポンプからの高圧燃料を噴射ノズルに供給する
噴射パイプの途中に供給燃料の一部を低圧側に逃
がすバイパスパイプを接続すると供に、供給燃料
の圧力が所定の範囲内のときにバイパスパイプを
開くチエツクバルブを設け、このチエツクバルブ
の開弁圧を噴射ノズルの開弁圧よりも少し高く設
定する一方、点火プラグを燃料噴射期間の前半で
作動させる点火時期制御手段を設けたことを特徴
とする直接噴射式火花点火エンジン。 In a direct injection spark ignition engine that has a fuel injection nozzle and a spark plug in the combustion chamber, a bypass pipe is installed in the middle of the injection pipe that supplies high-pressure fuel from the fuel injection pump to the injection nozzle to release part of the supplied fuel to the low-pressure side. At the same time, a check valve is provided that opens the bypass pipe when the pressure of the supplied fuel is within a predetermined range, and the opening pressure of this check valve is set slightly higher than the opening pressure of the injection nozzle. A direct injection spark ignition engine, characterized in that it is provided with ignition timing control means that operates during the first half of a fuel injection period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3355788U JPH01136672U (en) | 1988-03-14 | 1988-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3355788U JPH01136672U (en) | 1988-03-14 | 1988-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01136672U true JPH01136672U (en) | 1989-09-19 |
Family
ID=31260243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3355788U Pending JPH01136672U (en) | 1988-03-14 | 1988-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01136672U (en) |
-
1988
- 1988-03-14 JP JP3355788U patent/JPH01136672U/ja active Pending
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