JPH0169146U - - Google Patents
Info
- Publication number
- JPH0169146U JPH0169146U JP1987163787U JP16378787U JPH0169146U JP H0169146 U JPH0169146 U JP H0169146U JP 1987163787 U JP1987163787 U JP 1987163787U JP 16378787 U JP16378787 U JP 16378787U JP H0169146 U JPH0169146 U JP H0169146U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- injection nozzle
- intake valve
- graph showing
- injected
- 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 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims 4
- 238000001514 detection method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の一実施例に係る直噴型デイー
ゼルエンジンを示す要部縦断面図、第２図は吸気
弁の閉弁時期による体積効率の差異を示すグラフ
、第３図はエンジンの速度と排気煙濃度の関係を
示すグラフ、第４図は変形例に係る吸気弁の動弁
機構を示す要部縦断面図、第５図は同バルブの開
閉の時期を示すグラフ、第６図はエンジンの速度
に対する噴射圧の変化を示すグラフである。
なお図面に用いた符号において、１２……ピス
トン、１３……燃焼室（凹部）、１４……ユニツ
トインジエクタ、１５……プランジヤ、２１……
吸気ポート、２３……吸気弁、２６……ロツカア
ーム、２７……プツシユロツド、２８……カムシ
ヤフト、２９……カム、３２……油圧タイマ、３
３……電磁弁、３６……マイクロコンピユータ、
３８……回転検出センサ、である。
Fig. 1 is a vertical cross-sectional view of the main parts of a direct injection diesel engine according to an embodiment of the present invention, Fig. 2 is a graph showing the difference in volumetric efficiency depending on the intake valve closing timing, and Fig. 3 is a graph showing the difference in volumetric efficiency depending on the intake valve closing timing. A graph showing the relationship between speed and exhaust smoke concentration, Fig. 4 is a vertical sectional view of the main part showing the valve operating mechanism of the intake valve according to a modified example, Fig. 5 is a graph showing the timing of opening and closing of the same valve, Fig. 6 is a graph showing changes in injection pressure with respect to engine speed. In addition, in the symbols used in the drawings, 12... Piston, 13... Combustion chamber (recess), 14... Unit injector, 15... Plunger, 21...
Intake port, 23... Intake valve, 26... Locker arm, 27... Push rod, 28... Camshaft, 29... Cam, 32... Hydraulic timer, 3
3...Solenoid valve, 36...Microcomputer,
38... Rotation detection sensor.
Claims (1)
トンの頂部に形成された燃焼室に直接噴射するよ
うにしたエンジンにおいて、燃料を加圧するプラ
ンジヤを内蔵するユニツトインジエクタによつて
前記燃料噴射ノズルを構成するとともに、吸気弁
の動弁機構にタイミング調整機構を設けるように
したことを特徴とする直噴型デイーゼルエンジン
。 In an engine in which pressurized fuel is directly injected into a combustion chamber formed at the top of a piston by a fuel injection nozzle, the fuel injection nozzle is injected by a unit injector having a built-in plunger for pressurizing the fuel. What is claimed is: 1. A direct-injection diesel engine characterized in that a timing adjustment mechanism is provided in a valve operating mechanism of an intake valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987163787U JPH0169146U (en) | 1987-10-27 | 1987-10-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987163787U JPH0169146U (en) | 1987-10-27 | 1987-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0169146U true JPH0169146U (en) | 1989-05-08 |
Family
ID=31448823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987163787U Pending JPH0169146U (en) | 1987-10-27 | 1987-10-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0169146U (en) |
-
1987
- 1987-10-27 JP JP1987163787U patent/JPH0169146U/ja active Pending
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