JP2847314B2 - Variable control device for auxiliary combustion chamber on-off valve - Google Patents
Variable control device for auxiliary combustion chamber on-off valveInfo
- Publication number
- JP2847314B2 JP2847314B2 JP2078303A JP7830390A JP2847314B2 JP 2847314 B2 JP2847314 B2 JP 2847314B2 JP 2078303 A JP2078303 A JP 2078303A JP 7830390 A JP7830390 A JP 7830390A JP 2847314 B2 JP2847314 B2 JP 2847314B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- combustion chamber
- sub
- engine
- chamber
- 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 - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 43
- 238000004891 communication Methods 0.000 claims description 19
- 239000000446 fuel Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は副燃焼室に配置した開閉弁を制御する副室開
閉弁の可変制御装置に関する。Description: TECHNICAL FIELD The present invention relates to a variable control device for a sub-chamber on-off valve for controlling an on-off valve arranged in a sub-combustion chamber.
（従来の技術） 内燃機関に主燃焼室（主室）と副燃焼室（副室）とを
備えて、運転状態に応じて副室を閉鎖して内燃機関の圧
縮比を可変にすることにより、その性能の向上や、エミ
ッションによる公害を減少させ得ることが知られてい
る。(Prior Art) An internal combustion engine is provided with a main combustion chamber (main chamber) and a sub combustion chamber (sub chamber), and the compression chamber of the internal combustion engine is made variable by closing the sub chamber according to the operating state. It is known that it can improve its performance and reduce pollution caused by emissions.
一方、副室を有するエンジンにおいては副室に押し込
まれる空気の速度はエンジンの回転によって変化するも
ので、低回転では副室への空気は低速度となり燃料の燃
焼時間は比較的に長い。例えば回転数が1500rpmでは3mS
程度の燃焼時間であるが、回転数が5000rpm程度では燃
焼時間は1mS位のものである。On the other hand, in an engine having a sub-chamber, the speed of the air pushed into the sub-chamber changes according to the rotation of the engine. At low speed, the air flows into the sub-chamber at a low speed and the combustion time of the fuel is relatively long. For example, 3mS at 1500rpm
Although the combustion time is of the order, the combustion time is about 1 mS when the rotational speed is about 5000 rpm.
また、燃焼室内における渦流速度はピストンの速度に
比例するので、低回転では燃料と空気との混合速度が小
となり、高回転ではピストン速度が早いため吸入空気流
速が大で、渦流速度も早くなる。In addition, since the vortex velocity in the combustion chamber is proportional to the piston velocity, the mixing speed of fuel and air is low at low rotations, and the intake air flow rate is high and the vortex velocity is high at high rotations because the piston velocity is high at high rotations. .
（発明が解決しようとする課題） 上述のように副室を有するエンジンが高回転の場合に
はピストンの運転速度が早いため、副室に流入する空気
流速も早くて渦流速度も大となり、したがって、燃料と
空気との混合状態もよいが、エンジンが低回転の場合は
副室への空気速度が遅くなり、混合気の生成が不良とな
って燃焼が悪く、スモークの発生が多くなるという不具
合が生ずる。(Problems to be Solved by the Invention) As described above, when the engine having the sub-chamber has a high rotation speed, the operating speed of the piston is high. Therefore, the flow velocity of the air flowing into the sub-chamber is high, and the vortex velocity is high. Although the mixing state of fuel and air is good, when the engine is running at a low speed, the air speed to the sub-chamber is low, the air-fuel mixture is poorly generated, the combustion is poor, and the generation of smoke is increased. Occurs.
一方、エンジンの高負荷時は活発な燃焼のために燃焼
速度が高くなり、排出されるNOxのレベルが大になると
いう問題もある。On the other hand, when the engine is under a high load, there is also a problem that the combustion speed increases due to active combustion, and the level of NOx emitted increases.
本発明はこのような問題に鑑みてなされたものであ
り、その目的は燃焼室の主室と副室との連絡口の開度を
エンジンの運転状態に基づいて制御し、低回転時におけ
る混合気の生成や、排出されるエミッションの不具合を
改善しようとする副燃焼室開閉弁の可変制御装置を提供
することにある。The present invention has been made in view of such a problem, and an object of the present invention is to control an opening degree of a communication port between a main chamber and a sub chamber of a combustion chamber based on an operation state of an engine, and to perform mixing at a low rotation speed. It is an object of the present invention to provide a variable control device for a sub-combustion chamber opening / closing valve which aims to improve the generation of air and the problem of exhaust emission.
（課題を解決するための手段） 上述の目的を達成するために本発明によれば、内燃機
関の主燃焼室と副燃焼室とを連結する連絡口に配置した
開閉弁と、主燃焼室と副燃焼室との間を結ぶ連絡口の主
燃焼室側に設けられた燃料噴射ノズルと、電磁力により
該開閉弁の開度を複数段に切り替えて開閉駆動する動弁
機構と、内燃機関の回転数を検出する回転検出手段と、
内燃機関の負荷を検出する負荷検出手段とを有し、これ
らの検出手段からの検出信号に基づき前記動弁機構に指
令して開閉弁開度を所定開度に開閉制御する制御手段を
備えたことを特徴とする副燃焼室開閉弁の可変制御装置
が提供される。(Means for Solving the Problems) According to the present invention, in order to achieve the above-described object, an on-off valve arranged at a communication port connecting a main combustion chamber and a sub-combustion chamber of an internal combustion engine; A fuel injection nozzle provided on the main combustion chamber side of a communication port connecting with the sub combustion chamber, a valve mechanism for switching the opening degree of the on / off valve to a plurality of stages by electromagnetic force to open and close, and an internal combustion engine. Rotation detection means for detecting the number of rotations,
Load detecting means for detecting the load of the internal combustion engine, and control means for instructing the valve operating mechanism based on the detection signals from these detecting means to control the opening and closing of the opening and closing valve to a predetermined opening. A variable control device for a sub-combustion chamber opening / closing valve is provided.
（作用） 本発明では、燃焼室の主室と副室との連絡口に配置し
た開閉弁を、電磁力によって弁開度が複数段に変化自在
な動弁機構を用い、エンジン回転数とエンジン負荷とに
基づいて、複数段に開閉制御して連絡口に流入する空気
を制御する。このためエンジンの作動が負荷に応じて直
接噴射方式と副室噴射方式とに切換えられ、さらに副室
噴射方式においてもエンジン回転数に応じて、混合気の
生成が適切となるように制御されることになり、エンジ
ン出力の向上や排気汚染の問題が改善される。(Operation) In the present invention, the on-off valve arranged at the communication port between the main chamber and the sub-chamber of the combustion chamber uses a valve operating mechanism in which the valve opening degree can be changed into a plurality of stages by electromagnetic force, and the engine speed and the engine speed are controlled. Based on the load, open / close control is performed in a plurality of stages to control air flowing into the communication port. For this reason, the operation of the engine is switched between the direct injection system and the sub-chamber injection system in accordance with the load, and further in the sub-chamber injection system, the generation of the air-fuel mixture is controlled in accordance with the engine speed so as to be appropriate. As a result, the problems of higher engine output and exhaust pollution are improved.
（実施例） つぎに本発明の実施例について図面を用いて詳細に説
明する。Example Next, an example of the present invention will be described in detail with reference to the drawings.
第１図は本発明にかかる副燃焼室開閉弁の可変制御装
置の一実施例の構成を示すブロック図、第２図はそのシ
リンダヘッドと関連部分の説明図である。FIG. 1 is a block diagram showing the configuration of an embodiment of a variable control apparatus for an auxiliary combustion chamber opening / closing valve according to the present invention, and FIG. 2 is an explanatory diagram of a cylinder head and related parts.
これらの図面において、１はエンジンのシリンダで、
供給される燃料と吸入する空気との混合気を燃焼させ、
ピストンを駆動して車両の原動力とするもので、シリン
ダヘッドには吸気口11、排気口12が設けられ、それぞれ
吸気弁21、排気弁22が配置されている。In these drawings, 1 is an engine cylinder,
Combustion of the mixture of supplied fuel and intake air,
A piston is driven to drive the vehicle, and an intake port 11 and an exhaust port 12 are provided in a cylinder head, and an intake valve 21 and an exhaust valve 22 are arranged respectively.
３はシリンダヘッドの上部の主燃焼室となる主室、４
はその上方に設けられた副燃焼室となる副室であり、こ
れら主室３と副室４とは連絡口34によって連通されてお
り、該連絡口34にはその開度を制御する開閉弁５が取付
けられている。なお、主室３の容積は開閉弁５の可動範
囲よりやや大きい空間で、その横断面はほぼ卵形に形成
されている。3 is a main chamber serving as a main combustion chamber in the upper part of the cylinder head.
Is a sub-chamber provided above the sub-combustion chamber, and the main chamber 3 and the sub-chamber 4 are communicated by a communication port 34. The communication port 34 has an on-off valve for controlling the opening thereof. 5 are attached. The volume of the main chamber 3 is a space slightly larger than the movable range of the on-off valve 5, and its cross section is formed in an approximately oval shape.
また、副室４の内壁41は断熱性に富んだチタン酸アル
ミニウムなどの素材が使用されて燃焼熱を保持するよう
に構成され、外壁となるハウジング42や主室３の内部は
耐熱、耐強度性を有する窒化珪素材によって形成されて
いる。図示の43はエアーギャップであり、主室３の外周
壁近傍の所定範囲を取巻くように配置されて、その断熱
性によって燃焼室の内壁温度を保持するものである。Further, the inner wall 41 of the sub-chamber 4 is made of a material such as aluminum titanate having a high heat insulating property so as to retain the heat of combustion. It is formed of a silicon nitride material having properties. Reference numeral 43 denotes an air gap, which is arranged so as to surround a predetermined range near the outer peripheral wall of the main chamber 3 and maintains the inner wall temperature of the combustion chamber by its heat insulating property.
８は開閉弁５の動弁機構であり、第１図の左方の上面
図に示すように、それぞれＵ字状のコア部81と83とがク
ロスして副室４の上方に設けられ、これらコア部81と83
の交差部には開閉弁５のステム部52が遊嵌されてその上
部が突出するように形成されている。そして、コア部81
と83とはそれぞれ別個のコイル82と84とを備え、これら
コイル82または84に通電時にはステム部52の上端に配置
された吸着片53を吸引し、スプリング85の弾性力にて上
昇する開閉弁５を下降させ、その傘部51によって閉じら
れていた連絡口を開放する。なお、コア部83の吸着面は
コア部81の吸着面より低く形成されているため、コア部
83のコイル84に通電時には吸着片53の吸引行程が長くな
り、したがって連絡口34の開度はコイル84に通電時の方
がコイル82に通電時より大きく開放されるように構成さ
れている。また、これらのコイル82または84に通電する
と上述のように開閉弁５の弁部51による連絡口34の開度
が変化するのみでなく、吸着片53が交差しているコア部
81または83に吸引されるため、両者の交差角に応じて開
閉弁５が回転することになり、高温度となる開閉弁５の
焼付きが防止できることになる。Numeral 8 denotes a valve operating mechanism of the on-off valve 5, and as shown in the top view on the left side of FIG. 1, U-shaped core portions 81 and 83 cross each other and are provided above the sub chamber 4, These cores 81 and 83
The stem portion 52 of the on-off valve 5 is loosely fitted at the intersection of the upper and lower portions so that the upper portion thereof protrudes. And the core part 81
And 83 are provided with separate coils 82 and 84, respectively. When energized to these coils 82 or 84, the attraction piece 53 arranged at the upper end of the stem portion 52 is attracted, and the on-off valve which rises by the elastic force of the spring 85 5 is lowered, and the communication port closed by the umbrella part 51 is opened. Since the suction surface of the core portion 83 is formed lower than the suction surface of the core portion 81,
When the coil 84 of the 83 is energized, the suction stroke of the suction piece 53 becomes longer, so that the opening of the communication port 34 is configured to be more open when the coil 84 is energized than when the coil 82 is energized. When the coils 82 or 84 are energized, not only the opening degree of the communication port 34 by the valve portion 51 of the on-off valve 5 changes as described above, but also the core portion where the suction pieces 53 intersect.
Since the on-off valve 5 is sucked by 81 or 83, the on-off valve 5 rotates in accordance with the intersection angle between the two, and seizure of the on-off valve 5, which becomes high in temperature, can be prevented.
６は燃料の噴射ノズルで、主室３の側壁に所定の傾斜
角にて配置され、主室３の内壁に斜めに噴霧を噴射して
旋回させ、圧縮による空気の渦流とともに効率よく混合
気を生成するように構成されている。そして、動弁機構
８によりリフト量の変化する開閉弁５の下降時にはその
傘部51の根元部分の近傍に噴霧が旋回して噴射されるの
で、圧縮行程における圧気は連絡口34を介して噴霧を副
室４に押し込み、渦流に乗じて混合気を生成するもので
ある。Numeral 6 denotes a fuel injection nozzle, which is disposed at a predetermined inclination angle on the side wall of the main chamber 3 and injects the spray obliquely to the inner wall of the main chamber 3 to swirl, and efficiently mixes the air-fuel mixture with the vortex of the compressed air. It is configured to generate. When the on-off valve 5 whose lift amount changes due to the valve operating mechanism 8 descends, the spray is swirled and injected near the root of the umbrella portion 51, so that the compressed air in the compression stroke is sprayed through the communication port 34. Is pushed into the sub-chamber 4 and multiplied by a vortex to generate an air-fuel mixture.
７はコントローラでマイクロコンピュータからなり、
演算処理を行なう中央制御装置、演算処理手順や制御手
順などを格納する各種メモリ、入／出力ポートなどを備
えており、エンジンの水温センサ71、エンジンの回転セ
ンサ72、負荷センサ73などからの検出信号を入力する
と、所定の演算処理が行われる。格納された制御手順に
基づいて動弁機構８や噴射ポンプなどにそれぞれ制御指
令が発令されるように構成されている。7 is a controller which is composed of a microcomputer,
It is equipped with a central controller that performs arithmetic processing, various memories that store arithmetic processing procedures and control procedures, input / output ports, and the like. Detection from the engine water temperature sensor 71, engine rotation sensor 72, load sensor 73, etc. When a signal is input, a predetermined arithmetic processing is performed. A control command is issued to each of the valve train 8 and the injection pump based on the stored control procedure.
第３図は本実施例における作動の一例を示す処理フロ
ー図であり、同図を用いてその作動を説明する。FIG. 3 is a processing flowchart showing an example of the operation in the present embodiment, and the operation will be described with reference to FIG.
まず、ステップ１において、エンジンの回転数Ｎと、
エンジン負荷Ｌと、エンジンの冷却水温Twとをそれぞれ
回転センサ72、負荷センサ73、水温センサ71の検出信号
から読込む。ついで、ステップ２にて水温が所定温度の
例えば50℃、即ちT50以下の場合はステップ６に進み、
動弁機構８に指令してコイル82,84の何れにも通電する
ことなく、スプリング力にて上昇の開閉弁５により連絡
口34を閉鎖して、主室３にて直接噴射方式（DI）の運転
を行わせる。First, in step 1, the engine speed N and
The engine load L and the engine cooling water temperature Tw are read from the detection signals of the rotation sensor 72, the load sensor 73, and the water temperature sensor 71, respectively. Then, the water temperature is for example 50 ° C. of a predetermined temperature in step 2, i.e. in the case of T 50 following the procedure proceeds to step 6,
Without instructing the valve operating mechanism 8 to energize either of the coils 82 and 84, the communication port 34 is closed by the on-off valve 5 which is raised by the spring force, and the direct injection method (DI) is performed in the main chamber 3. To drive.
ステップ２にて水温がT50以上のときはステップ３に
進み、ここでは回転信号をチェックして回転数が2500rp
m、即ちN2500以上の高回転の場合はステップ４にて負荷
信号をチェックする。そして、60％負荷のL60以上の場
合はステップ５に進んで動弁機構８に指令し、コイル84
に通電することにより開閉弁５のリフト量を大にして開
度を大とし、絞り損失を低減させて副室噴射方式（ID
I）の運転を行う。なお、ステップ４にてのチェックに
より、低負荷を判断するとステップ６に移行して開閉弁
５の駆動を行わずに連絡口を閉じてIDの運転を行なうこ
とになる。Proceeds in step 2 to step 3 when the water temperature is T 50 or more, wherein 2500rp rotation speed by checking the rotation signal
If the rotation speed is higher than m, that is, N 2500 or more, the load signal is checked in step 4. Then, at the 60% load of L 60 or more commands to the valve mechanism 8 proceeds to step 5, the coil 84
The opening of the sub-chamber injection system (ID
Perform operation I). If it is determined in step 4 that the load is low, the flow shifts to step 6 to close the communication port and operate the ID without driving the on-off valve 5.
前記のステップ３において、回転信号がN2500以下の
低回転の場合はステップ７に移って負荷信号をチェック
し、負荷が大きいときはステップ８にて動弁機構８のコ
イル82への通電により開閉弁５のリフト量を小にし、ま
た負荷が小さいときは動弁機構８を作動させずに開閉弁
５によって連絡口34を閉鎖する。したがって、ステップ
８の場合はエンジンが低回転にて空気流速も遅いので、
弁開度を絞ることにより副室での混合気の生成が促進さ
れることになり、ステップ９の場合は開閉弁５を閉じて
圧縮比を高め、直接噴射の方が部分負荷では有利に運転
されることになる。In step 3 above, if the rotation signal is a low rotation of N 2500 or less, proceed to step 7 to check the load signal. If the load is large, open and close by energizing the coil 82 of the valve mechanism 8 in step 8 When the lift amount of the valve 5 is small, and when the load is small, the valve 34 is not operated and the communication port 34 is closed by the on-off valve 5. Therefore, in the case of step 8, since the engine speed is low and the air flow rate is low,
By reducing the valve opening, the generation of air-fuel mixture in the sub-chamber is promoted. In the case of step 9, the on-off valve 5 is closed to increase the compression ratio, and the direct injection is more advantageous for partial load operation. Will be done.
第４図は横軸にエンジン回転数、縦軸にエンジン負荷
をとって上述の開閉弁の作動を示した曲線図であり、エ
ンジン負荷が小の場合は開閉弁を閉じて主室における直
接噴射方式とし、エンジン負荷が大きい場合は副室噴射
方式とするが、エンジン回転数が高速のとき弁開度を大
に、エンジン回転数が低速のときは弁開度を小にして、
運転条件に応じて弁開度を変化させた様子を示したもの
である。FIG. 4 is a curve diagram showing the operation of the above-described on-off valve with the engine speed on the horizontal axis and the engine load on the vertical axis. When the engine load is small, the on-off valve is closed and direct injection in the main chamber is performed. When the engine load is large, the auxiliary chamber injection method is used, but when the engine speed is high, the valve opening is large, and when the engine speed is low, the valve opening is small,
FIG. 7 shows a state in which the valve opening degree is changed according to operating conditions.
以上、本発明を上述の実施例を用いて説明したが、本
発明の主旨の範囲内で種々の変形が可能であり、これら
の変形を本発明の範囲から排除するものではない。As described above, the present invention has been described using the above-described embodiment, but various modifications are possible within the scope of the present invention, and these modifications are not excluded from the scope of the present invention.
（発明の効果） 上述のように本発明によれば、燃焼室の主室と副室と
の連絡口に開閉弁を配置し、該開閉弁を電磁力により弁
開度が複数段に変化自在な動弁機構を設けるとともに、
エンジン回転数とエンジン負荷に基づいて動弁機構を作
動させて前記の連絡口を開閉制御するので、エンジンの
運転状態によって生ずる低回転時の混合気の生成不良に
基づく出力やエミッションの不具合や、高負荷時のNOx
の発生大などの問題などが解消されるという効果が生
じ、さらに、運転条件に応じての適切な燃焼方式が選択
自在となる利点がある。(Effect of the Invention) As described above, according to the present invention, an on-off valve is disposed at the communication port between the main chamber and the sub-chamber of the combustion chamber, and the opening degree of the on-off valve can be freely changed to a plurality of stages by electromagnetic force. With a simple valve mechanism,
Since the valve is operated based on the engine speed and the engine load to control the opening and closing of the communication port, output and emission problems based on poor air-fuel mixture generation at low engine speeds caused by the operating state of the engine, NOx at high load
This has the advantage that problems such as the occurrence of large amounts of gas are eliminated, and furthermore, there is an advantage that an appropriate combustion method can be selected according to operating conditions.
第１図は本発明にかかる副燃焼室開閉弁の可変制御装置
の一実施例の構成を示すブロック図、第２図はそのシリ
ンダヘッドと関連部分の説明図、第３図は本実施例の作
動の一例を示す処理フロー図、第４図は本実施例におけ
るエンジン回転数とエンジン負荷とに基づく開閉弁の状
態を説明する曲線図である。 １……シリンダ、３……主室、４……副室、５……開閉
弁、７……コントローラ、８……動弁機構、34……連絡
口、53……吸着片、72……回転センサ、73……負荷セン
サ、81,83……コア部。FIG. 1 is a block diagram showing the configuration of an embodiment of a variable control device for a sub-combustion chamber opening / closing valve according to the present invention, FIG. 2 is an explanatory diagram of a cylinder head and related parts, and FIG. FIG. 4 is a process flow chart showing an example of the operation, and FIG. 4 is a curve diagram for explaining the state of the on-off valve based on the engine speed and the engine load in this embodiment. 1 ... Cylinder, 3 ... Main chamber, 4 ... Sub chamber, 5 ... Open / close valve, 7 ... Controller, 8 ... Valve operating mechanism, 34 ... Communication port, 53 ... Suction piece, 72 ... Rotation sensor, 73 ... Load sensor, 81,83 ... Core part.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F02D 15/04 F02B 19/00 - 19/18 F02M 61/14 310──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) F02D 15/04 F02B 19/00-19/18 F02M 61/14 310
Claims (2)
る連絡口に配置した開閉弁と、主燃焼室と副燃焼室との
間を結ぶ連絡口の主燃焼室側に設けられた燃料噴射ノズ
ルと、電磁力により該開閉弁の開度を複数段に切り替え
て開閉駆動する動弁機構と、内燃機関の回転数を検出す
る回転検出手段と、内燃機関の負荷を検出する負荷検出
手段とを有し、これらの検出手段からの検出信号に基づ
き前記動弁機構に指令して開閉弁開度を所定開度に開閉
制御する制御手段を備えたことを特徴とする副燃焼室開
閉弁の可変制御装置。An on-off valve arranged at a communication port connecting a main combustion chamber and a sub-combustion chamber of an internal combustion engine and a communication port connecting the main combustion chamber and the sub-combustion chamber are provided on the main combustion chamber side. A fuel injection nozzle, a valve mechanism for switching the opening degree of the on-off valve to a plurality of stages by electromagnetic force to open and close, a rotation detecting means for detecting a rotation speed of the internal combustion engine, and a load for detecting a load of the internal combustion engine A sub-combustion chamber, comprising: control means for instructing the valve mechanism based on detection signals from the detection means to control the opening and closing of the on-off valve to a predetermined opening degree. Variable control device for on-off valve.
弁の開弁により副燃焼室式ディーゼルエンジンとし、エ
ンジンの負荷が小さい場合前記開閉弁を閉鎖し直接噴射
式ディーゼルとする制御装置を有することを特徴とする
請求項（１）記載の副燃焼室開閉弁の可変制御装置。2. A control device having a sub-combustion chamber diesel engine by opening the on-off valve when the engine load is large, and a direct injection diesel engine by closing the on-off valve when the engine load is small. The variable control device for an on-off valve of a sub-combustion chamber according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2078303A JP2847314B2 (en) | 1990-03-27 | 1990-03-27 | Variable control device for auxiliary combustion chamber on-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2078303A JP2847314B2 (en) | 1990-03-27 | 1990-03-27 | Variable control device for auxiliary combustion chamber on-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03279634A JPH03279634A (en) | 1991-12-10 |
| JP2847314B2 true JP2847314B2 (en) | 1999-01-20 |
Family
ID=13658160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2078303A Expired - Fee Related JP2847314B2 (en) | 1990-03-27 | 1990-03-27 | Variable control device for auxiliary combustion chamber on-off valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847314B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11156147B1 (en) | 2020-12-02 | 2021-10-26 | Aramco Services Company | Prechamber device for internal combustion engine |
-
1990
- 1990-03-27 JP JP2078303A patent/JP2847314B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11156147B1 (en) | 2020-12-02 | 2021-10-26 | Aramco Services Company | Prechamber device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03279634A (en) | 1991-12-10 |
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