JPS6146221Y2 - - Google Patents
Info
- Publication number
- JPS6146221Y2 JPS6146221Y2 JP1980042889U JP4288980U JPS6146221Y2 JP S6146221 Y2 JPS6146221 Y2 JP S6146221Y2 JP 1980042889 U JP1980042889 U JP 1980042889U JP 4288980 U JP4288980 U JP 4288980U JP S6146221 Y2 JPS6146221 Y2 JP S6146221Y2
- Authority
- JP
- Japan
- Prior art keywords
- preheating plug
- preheating
- chamber
- plug
- engine
- 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.)
- Expired
Links
- 239000003921 oil Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 17
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は予熱栓を備えるデイーゼル機関の予熱
装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a preheating device for a diesel engine equipped with a preheating plug.
従来の予熱栓を備えたデイーゼル機関では、予
熱栓を副燃焼室に突出させて固定しているため、
寒冷始動性は向上する反面、機関始動後において
予熱栓は副燃焼室内のスムーズな渦流の形成の障
害となり、燃焼状態の悪化、更には出力低下の一
因となつていた。 In diesel engines equipped with conventional preheating plugs, the preheating plug is fixed and protrudes into the auxiliary combustion chamber.
Although cold startability is improved, the preheating plug becomes a hindrance to the formation of a smooth vortex flow in the sub-combustion chamber after the engine starts, which causes deterioration of combustion conditions and furthermore, a decrease in output.
このため予熱栓を燃焼室に対して進入退出操作
可能にし、始動時予熱栓を燃焼室に進入させて加
熱を行ない、始動後予熱栓を退出させる装置が知
られている。（特開昭52−133432号公報、同54−
113735号公報参照）
しかし上記公報に開示された前記装置はいずれ
も予熱栓を常時はばねで引つ込めておき使用時に
マグネツト（電磁石）、油圧シリンダ等により燃
焼室内に突出させるものであるから、始動時に
一々運転者によるスイツチの操作あるいは切換弁
の操作が必要である。 For this reason, a device is known in which the preheating plug is operable to enter and exit the combustion chamber, the preheating plug enters the combustion chamber to heat the combustion chamber at startup, and the preheating plug is withdrawn after startup. (Unexamined Japanese Patent Publication No. 52-133432, No. 54-
(See Publication No. 113735) However, in all of the above-mentioned devices disclosed in the above publications, the preheating plug is normally retracted by a spring and is projected into the combustion chamber by a magnet (electromagnet), hydraulic cylinder, etc. when in use. The driver must operate a switch or selector valve each time the engine is started.
本案は、上述の如き不具合を除去し、予熱栓の
操作の自動化を図りつつ、始動後における機関の
運転状態に合つた加熱を可能としたデイーゼルエ
ンジン用予熱装置を提供するもので、その要旨と
するところはシリンダヘツドに形成したシリンダ
穴にバネによつて常時副燃焼室に進入するよう付
勢された予熱栓を配設するとともに、該予熱栓と
上記シリンダ穴によつて形成された油圧室に機関
により回転する潤滑油ポンプを連結し、上記油圧
室の油圧の上昇により予熱栓を副燃焼室より退出
させるようにしたことにある。 The purpose of this project is to provide a preheating device for a diesel engine that eliminates the above-mentioned problems, automates the operation of the preheating plug, and enables heating that matches the operating condition of the engine after starting. A preheating plug that is always urged by a spring to enter the auxiliary combustion chamber is installed in the cylinder hole formed in the cylinder head, and a hydraulic chamber formed by the preheating plug and the cylinder hole is installed. A lubricating oil pump rotated by the engine is connected to the engine, and the preheating plug is moved out of the auxiliary combustion chamber as the oil pressure in the oil pressure chamber increases.
以下その一実施例を図について説明すると、１
はデイーゼル機関のシリンダボデーで、そのシリ
ンダボア２にはピストン３が摺動自在に嵌合され
ている。４はピストン３の頂部に設けられた主燃
焼室（以下単に主室という）である。ボデー１の
上面にはガスケツト５を介してシリンダヘツド６
が配設され、該ヘツド６の下部には口金７を嵌挿
して形成した副燃焼室（以下単に副室という）８
が設けられている。また９は燃料噴射ノズルであ
る。 One example of this will be explained below with reference to the figures.
1 is a cylinder body of a diesel engine, and a piston 3 is slidably fitted into a cylinder bore 2 of the cylinder body. 4 is a main combustion chamber (hereinafter simply referred to as the main chamber) provided at the top of the piston 3. A cylinder head 6 is attached to the upper surface of the body 1 via a gasket 5.
An auxiliary combustion chamber (hereinafter simply referred to as an auxiliary chamber) 8 is formed by fitting a cap 7 into the lower part of the head 6.
is provided. Further, 9 is a fuel injection nozzle.
１０はシリンダヘツド６の一側端より形成され
た予熱栓用のシリンダ穴で、その内部に予熱栓１
１が摺動可能に配設されるように成つている。 10 is a cylinder hole for a preheating plug formed from one end of the cylinder head 6, and a preheating plug 1 is installed inside the cylinder hole.
1 is slidably disposed.
上記予熱栓１１の中間部には、溝１４を設けた
つば部１２，１３が形成され、上記溝１４内にオ
イルシール部材１５を嵌合するとともに、前記つ
ば部１３より先端側に溝１７を挟んでつば部１６
を形成し、上記溝１７内にオイルシール部材１８
を嵌合し、それら２つのシール部間に油圧室１９
が形成されている。 Flange portions 12 and 13 having a groove 14 are formed in the intermediate portion of the preheating plug 11, and an oil seal member 15 is fitted into the groove 14, and a groove 17 is formed on the distal end side of the collar portion 13. Sandwich brim part 16
an oil seal member 18 is formed in the groove 17.
and the hydraulic chamber 19 is fitted between the two seal parts.
is formed.
また前記シリンダ穴１０の外側端には、予熱栓
１１をシール部材２０を介して摺動可能にしたプ
ラグ２１がシリンダヘツド６にねじ結合されてお
り、上記プラグ２１の先端に設けたスプリングシ
ート２２とつば部１２との間に予熱栓１１を副室
８内に進入するように付勢するバネ２３が配設さ
れている。 Further, at the outer end of the cylinder hole 10, a plug 21 that allows the preheating plug 11 to slide through a sealing member 20 is screwed to the cylinder head 6, and a spring seat 22 provided at the tip of the plug 21 A spring 23 is disposed between the preheating plug 11 and the flange 12 to urge the preheating plug 11 to enter the auxiliary chamber 8.
前記油圧室１９には、機関のオイルパン２４よ
り潤滑油をオイルポンプ２５によつて適宜の潤滑
路を介して送油するよう連結されている。２６は
油圧室１９の油圧を設定値に上昇させるために、
油圧室１９とオイルパン２４との間に設けられた
絞り部で、この絞りの度合いを変えることによつ
て上記油圧室内の油圧を変えることができ、前記
バネ２３とともに予熱栓１１の退出時期を変える
ことができる。 An oil pump 25 is connected to the hydraulic chamber 19 to supply lubricating oil from an oil pan 24 of the engine through a suitable lubricating path. 26 is for raising the oil pressure in the oil pressure chamber 19 to a set value;
By changing the degree of throttling in a constriction section provided between the hydraulic chamber 19 and the oil pan 24, the oil pressure in the hydraulic chamber can be changed, and together with the spring 23, the exit timing of the preheating plug 11 can be controlled. It can be changed.
２７は前記予熱栓１１の頭部に取付けられた電
極部材で、メインスイツチ（始動スイツチ）２９
を介してバツテリ２８と連結されている。なお３
０は予熱表示用抵抗であり、又３１，３２はガス
シール部材である。 27 is an electrode member attached to the head of the preheating plug 11, and a main switch (starting switch) 29
It is connected to the battery 28 via. Note 3
0 is a preheating display resistor, and 31 and 32 are gas seal members.
上述の如く構成した予熱装置を作動させる場合
は、機関始動前であるから油圧室１９の油圧が発
生していないので、バネ２３の作用により予熱栓
１１は副室８内に進入した状態（図で２点鎖線で
示した位置）にある。 When operating the preheating device configured as described above, since the engine has not yet started and no hydraulic pressure is generated in the hydraulic chamber 19, the preheating plug 11 enters into the auxiliary chamber 8 due to the action of the spring 23 (Fig. (indicated by the two-dot chain line).
そこで、メインスイツチ２９を閉路すればバツ
テリ２８より予熱栓１１に通電され、その赤熱に
よつて副室の燃焼が促進される。 Therefore, when the main switch 29 is closed, the preheating plug 11 is energized from the battery 28, and the red heat thereof promotes combustion in the subchamber.
次に機関が始動し正規の運転状態になると、オ
イルポンプ２５の働きにより油圧室１９内の油圧
が上昇し、該油圧がバネ２３の作用力よりも大き
くなると、予熱栓１１は図で実線で示した位置ま
で退出し、機関の停止によつて前記油圧がなくな
れば再び予熱栓１１は副室８内に突出する。 Next, when the engine starts and enters the normal operating state, the oil pressure in the hydraulic chamber 19 increases due to the action of the oil pump 25, and when this oil pressure becomes larger than the acting force of the spring 23, the preheating plug 11 is moved as shown by the solid line in the figure. When the preheating plug 11 exits to the indicated position and the oil pressure disappears due to stopping of the engine, the preheating plug 11 protrudes into the auxiliary chamber 8 again.
予熱栓１１が退出したときは、予熱栓による副
室８内での渦流形成の阻害原因がなくなるので、
渦流が強化され燃焼が良好となり、出力が増大す
る。 When the preheating plug 11 leaves, there is no longer a cause for inhibiting the formation of a vortex flow in the subchamber 8 due to the preheating plug.
Swirl flow is strengthened, combustion is improved, and power output is increased.
始動時において、機関は回転を開始したが未だ
正常運転とならない状態のときは、予熱栓１１を
半退出の状態とし、このとき予熱栓１１に通電す
るようにすれば、予熱栓による副室８内での渦流
形成に阻害を最小限としつつ副室内の加熱が可能
で、正常運転状態への移行が早められることにな
る。 At the time of startup, if the engine has started rotating but is not yet in normal operation, the preheating plug 11 is set in a semi-retracted state and the preheating plug 11 is energized at this time. It is possible to heat the pre-chamber while minimizing disturbance to the formation of vortices within the sub-chamber, thereby speeding up the transition to normal operating conditions.
以上のように本考案では、シリンダヘツドに形
成したシリンダ穴にバネによつて常時副燃焼室に
進入するよう付勢された予熱栓を配設するととも
に、該予熱栓と上記シリンダ穴によつて形成され
た油圧室に機関により回転する潤滑油ポンプを連
結し、上記油圧室の油圧の上昇により予熱栓を副
燃焼室より退出させるようにしてなるので、予熱
栓の副室への進入、退出が機関の油圧によつて自
動的に制御し得るようになり、運転者により一々
スイツチの操作あるいは切換弁の操作を行なう必
要がなくなり予熱栓の操作の自動化を図ることが
でき、更に始動後における機関の運転状態に合つ
た加熱が可能となる効果もある。 As described above, in the present invention, a preheating plug which is always urged by a spring to enter the auxiliary combustion chamber is disposed in the cylinder hole formed in the cylinder head, and the preheating plug and the cylinder hole are connected to each other. A lubricating oil pump rotated by the engine is connected to the formed hydraulic chamber, and the preheating plug is moved out of the auxiliary combustion chamber by the increase in the oil pressure in the hydraulic chamber, so that the preheating plug enters and exits the auxiliary chamber. can now be automatically controlled by the engine's oil pressure, eliminating the need for the driver to operate a switch or selector valve each time, making it possible to automate the operation of the preheating valve. This also has the effect of making it possible to perform heating that matches the operating conditions of the engine.
図は本考案の実施例を示す概略系統図である。
１；シリンダボデー、３；ピストン、４；主
室、８；副室、１０；シリンダ部、１１；予熱
栓、１２，１３，１６；予熱栓のつば部、１４，
１７；溝、１５，１８；オイルシール部材、１
９；油圧室、２１；プラグ、２３；バネ、２４；
オイルパン、２５；オイルポンプ、２６；絞り
部、２７；電極部材、２８；バツテリ、２９；メ
インスイツチ。
The figure is a schematic system diagram showing an embodiment of the present invention. 1; cylinder body, 3; piston, 4; main chamber, 8; auxiliary chamber, 10; cylinder part, 11; preheating plug, 12, 13, 16; collar of preheating plug, 14
17; groove, 15, 18; oil seal member, 1
9; Hydraulic chamber, 21; Plug, 23; Spring, 24;
Oil pan, 25; Oil pump, 26; Restricted portion, 27; Electrode member, 28; Battery, 29; Main switch.
Claims (1)
よつて常時副燃焼室に進入するよう付勢された予
熱栓を配設するとともに、該予熱栓と上記シリン
ダ穴によつて形成された油圧室に機関により回転
する潤滑油ポンプを連結し、上記油圧室の油圧の
上昇により予熱栓を副燃焼室より退出させるよう
にしてなるデイーゼル機関の予熱装置。 A preheating plug, which is always urged by a spring to enter the auxiliary combustion chamber, is disposed in the cylinder hole formed in the cylinder head, and a hydraulic chamber formed by the preheating plug and the cylinder hole is filled with the engine. A preheating device for a diesel engine, which is connected to a rotating lubricating oil pump, and is configured to move a preheating plug out of a sub-combustion chamber by increasing the oil pressure in the hydraulic chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980042889U JPS6146221Y2 (en) | 1980-03-31 | 1980-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980042889U JPS6146221Y2 (en) | 1980-03-31 | 1980-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56143517U JPS56143517U (en) | 1981-10-29 |
| JPS6146221Y2 true JPS6146221Y2 (en) | 1986-12-25 |
Family
ID=29638268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980042889U Expired JPS6146221Y2 (en) | 1980-03-31 | 1980-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6146221Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133432A (en) * | 1976-04-30 | 1977-11-08 | Kubota Ltd | Diesel engine |
| JPS54113735A (en) * | 1978-02-24 | 1979-09-05 | Nissan Motor Co Ltd | Glow plug of internal engine |
-
1980
- 1980-03-31 JP JP1980042889U patent/JPS6146221Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133432A (en) * | 1976-04-30 | 1977-11-08 | Kubota Ltd | Diesel engine |
| JPS54113735A (en) * | 1978-02-24 | 1979-09-05 | Nissan Motor Co Ltd | Glow plug of internal engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56143517U (en) | 1981-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6146221Y2 (en) | ||
| US2066228A (en) | Internal combustion engine of the liquid fuel injection type | |
| US4875445A (en) | Combustion chamber of a sub-chamber type internal combustion engine | |
| US1419702A (en) | Combustion chamber for internal-combustion engines | |
| JPH0110419Y2 (en) | ||
| JP2518878B2 (en) | Ignition timing control device for variable compression ratio internal combustion engine | |
| US4084554A (en) | Multi-cylinder internal combustion engine | |
| US2316887A (en) | Fuel injection system | |
| JPH0287927U (en) | ||
| JPH0121180Y2 (en) | ||
| JPS6018591Y2 (en) | Internal combustion engine intake control device | |
| JPS63243461A (en) | Movable glow plug of diesel engine | |
| JPS6224743Y2 (en) | ||
| JPS6237939Y2 (en) | ||
| JPS6240109Y2 (en) | ||
| JPS6054490B2 (en) | Internal combustion engine with variable compression ratio | |
| JPS6115233Y2 (en) | ||
| JPS5877170A (en) | Glow plug for sub-chamber type diesel engine | |
| JPH01159410A (en) | Divided combustion chamber type diesel engine | |
| JPS609404Y2 (en) | 2 cycle engine | |
| Broome | Paper 1: The Breathing and Combustion Requirements of the Small High-Speed Diesel Engine | |
| JPH0238026Y2 (en) | ||
| JPH045717Y2 (en) | ||
| JPS6016751Y2 (en) | Diesel engine fuel injection timing adjustment device | |
| JPH0223261A (en) | Fuel injection device for diesel engine |