JPH0444477U - - Google Patents
Info
- Publication number
- JPH0444477U JPH0444477U JP8717590U JP8717590U JPH0444477U JP H0444477 U JPH0444477 U JP H0444477U JP 8717590 U JP8717590 U JP 8717590U JP 8717590 U JP8717590 U JP 8717590U JP H0444477 U JPH0444477 U JP H0444477U
- Authority
- JP
- Japan
- Prior art keywords
- pressure reducing
- engine
- pressure
- engine starting
- reducing device
- 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 2
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 2
- 238000004880 explosion Methods 0.000 claims 1
- 230000002000 scavenging effect Effects 0.000 claims 1
Landscapes
- Valve Device For Special Equipments (AREA)
Description
第１図ａは本考案の実施例にかかるエンジンの
始動減圧装置の構成を示す部分側断面図、第１図
ｂ，ｃは第１図ａの減圧弁に使用されている一方
向弁の弁部材の正面図および側面図、第１図ｄ，
ｅは第１図ａの減圧弁に使用されているスリーブ
の側面図および正面図、第２図、第３図ａは他の
実施例を示す始動減圧装置の構成を示す部分側断
面図、第３図ｂは第３図ａの−矢視図、第４
図〜第６図は他の実施例を示す始動減圧装置の構
成を示す部分側断面図、第７図は従来のエンジン
の始動減圧装置の構成を示す部分側断面図である
。
Ｅ……エンジン、Ｃ……シリンダ、１……減圧
弁、２，２′……スリーブ、弁体（開閉動作手段
）、４……ピストン部、５……筒状空気室、８，
８′……一方向弁、１０……連通孔。
Figure 1a is a partial side sectional view showing the configuration of an engine starting pressure reducing device according to an embodiment of the present invention, and Figures 1b and c are one-way valves used in the pressure reducing valve of Figure 1a. Front and side views of the member, Figure 1d,
1e is a side view and a front view of the sleeve used in the pressure reducing valve of FIG. Figure 3b is a - arrow view of Figure 3a,
6 are partial side sectional views showing the structure of a starting pressure reducing device showing other embodiments, and FIG. 7 is a partial side sectional view showing the structure of a conventional engine starting pressure reducing device. E... Engine, C... Cylinder, 1... Pressure reducing valve, 2, 2'... Sleeve, valve body (opening/closing operation means), 4... Piston portion, 5... Cylindrical air chamber, 8,
8'...One-way valve, 10...Communication hole.
Claims (1)
室外に通じる連通孔を穿設し、この連通孔に、一
部にシリンダ内圧を受ける受圧部を具備した開閉
自在な減圧弁を配設して、エンジン始動時のシリ
ンダ内の圧縮力を減じて始動操作を容易にするエ
ンジンの始動減圧装置において、 上記減圧弁の開閉動作手段にピストン部を連設
するとともに、このピストン部を往復自在に内包
する筒状空気室を設け、且つこの筒状空気室の一
端に該筒状空気室からその外部方向へ圧縮空気を
逃がす方向にのみ作用する一方向弁を配設してな
り、この一方向弁の開閉動作圧力が、エンジンの
圧縮圧力近傍の圧力域では閉状態を維持し、エン
ジンの爆発圧力近傍の圧力域では開動作するよう
な圧力に設定されていることを特徴とするエンジ
ンの始動減圧装置。 (2) 請求項第１項記載のエンジンの始動減圧装
置において、前記減圧弁の開閉動作手段に、エン
ジン冷却用の冷却風を通路を介して導き、エンジ
ン運転時に該減圧弁が開動作するのを阻止するよ
う構成したことを特徴とするエンジンの始動減圧
装置。 (3) 請求項第１項記載のエンジンの始動減圧装
置において、前記減圧弁の、一端が燃焼室内側と
連通し減圧動作時に該シリンダ内の圧力空気を逃
がす減圧孔の先端が、エンジンの掃気通路に連通
していることを特徴とするエンジンの始動減圧装
置。[Scope of Claim for Utility Model Registration] (1) A communication hole leading to the outside of the combustion chamber is provided above the exhaust port of the cylinder. In an engine starting pressure reducing device that is equipped with a pressure reducing valve to reduce the compression force in the cylinder at the time of engine starting to facilitate starting operation, a piston part is connected to the opening/closing operation means of the pressure reducing valve, and this A cylindrical air chamber is provided that reciprocally accommodates a piston portion, and a one-way valve is provided at one end of the cylindrical air chamber that acts only in the direction of escaping compressed air from the cylindrical air chamber to the outside thereof. The opening/closing operating pressure of this one-way valve is set to a pressure that maintains the closed state in the pressure range near the engine's compression pressure and opens in the pressure range near the engine's explosion pressure. Features: Engine starting pressure reducing device. (2) In the engine starting pressure reducing device according to claim 1, cooling air for cooling the engine is introduced through a passage to the opening/closing means for the pressure reducing valve so that the pressure reducing valve opens and closes during engine operation. An engine starting pressure reducing device characterized in that it is configured to prevent. (3) In the engine starting pressure reducing device according to claim 1, one end of the pressure reducing valve communicates with the inside of the combustion chamber and the tip of the pressure reducing hole that releases the pressurized air in the cylinder during the pressure reducing operation is connected to the scavenging air of the engine. An engine starting pressure reducing device characterized by communicating with a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990087175U JPH073020Y2 (en) | 1990-08-20 | 1990-08-20 | Engine starting decompression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990087175U JPH073020Y2 (en) | 1990-08-20 | 1990-08-20 | Engine starting decompression device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0444477U true JPH0444477U (en) | 1992-04-15 |
| JPH073020Y2 JPH073020Y2 (en) | 1995-01-30 |
Family
ID=31819312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990087175U Expired - Lifetime JPH073020Y2 (en) | 1990-08-20 | 1990-08-20 | Engine starting decompression device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073020Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132458U (en) * | 1991-05-28 | 1992-12-08 | 株式会社共立 | Decompression device for internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63110608U (en) * | 1987-01-08 | 1988-07-15 | ||
| JPH0228579U (en) * | 1988-08-11 | 1990-02-23 |
-
1990
- 1990-08-20 JP JP1990087175U patent/JPH073020Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63110608U (en) * | 1987-01-08 | 1988-07-15 | ||
| JPH0228579U (en) * | 1988-08-11 | 1990-02-23 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132458U (en) * | 1991-05-28 | 1992-12-08 | 株式会社共立 | Decompression device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073020Y2 (en) | 1995-01-30 |
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