JP7579528B2 - 4-stroke engine - Google Patents
4-stroke engine Download PDFInfo
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- JP7579528B2 JP7579528B2 JP2022157126A JP2022157126A JP7579528B2 JP 7579528 B2 JP7579528 B2 JP 7579528B2 JP 2022157126 A JP2022157126 A JP 2022157126A JP 2022157126 A JP2022157126 A JP 2022157126A JP 7579528 B2 JP7579528 B2 JP 7579528B2
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- 238000004880 explosion Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
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Description
本発明は４サイクルエンジンに関する。特に、シリンダヘッドを簡略化できる４サイクルエンジンに関する。The present invention relates to a four-stroke engine, and more particularly to a four-stroke engine that can simplify the cylinder head.
一般的に、内燃機関として４サイクルエンジンが知られている。これには、吸気バルブ、排気バルブが設けられ、カムシャフトでこれらバルブを駆動するようにしている。Generally, four-stroke engines are known as internal combustion engines. These engines are provided with intake valves and exhaust valves, and these valves are driven by a camshaft.
ところで、吸気バルブ、排気バルブが設けられていることから、エンジンの構造を小型化することが困難である。However, since the engine has an intake valve and an exhaust valve, it is difficult to reduce the size of the engine structure.
そのため、バルブ駆動機構を簡素化して、４サイクルエンジンを軽量化するとともに製造性を向上させことができる４サイクルエンジンが提案されている（特許文献１参照）。For this reason, a four-stroke engine has been proposed that can simplify the valve drive mechanism to reduce the weight of the four-stroke engine and improve manufacturability (see Patent Document 1).
しかしながら、特許文献１の提案では、バルブが設けられているとエンジンの高さ小型化できないという問題があった。また、バルブが設けられているとバルブスプリングが必要となり、エンジン駆動の抵抗となるという問題があった。However, the proposal in
本発明は、上記の課題に鑑みてなされたものであり、バルブにではなく、２重構造にした円筒手段を吸気、排気筒を設けることにより構造が小型化でき、かつ、部品点数の少ない４サイクルエンジンを提供することを目的とする。The present invention has been made in consideration of the above problems, and has as its object to provide a four-stroke engine with a small number of parts and a compact structure, by providing intake and exhaust pipes with double-structured cylindrical means instead of valves.
本発明は、上記課題を解決するために、以下に記載の手段よりなる。
すなわち、
４サイクルエンジンの吸気及び排気を行うため、それぞれ気筒数に応じた穴を設けた内筒と外筒からなる２重構造を有する円筒手段を吸気側及び排気側に備え、
吸気側は前記２重構造の内筒を固定するとともに前記気筒数に応じた穴をシリンダーの位置に合致させ、外筒を回転させ爆発の点火順に応じた位置に設け、
排気側は前記２重構造の外筒を固定とともに前記気筒数に応じた穴をシリンダーの位置に合致させ、内筒を回転させ爆発の点火順に応じた位置に設けることを特徴とする４サイクルエンジン。 In order to solve the above problems, the present invention comprises the following means.
That is,
In order to perform intake and exhaust of the four-stroke engine, a cylindrical means having a double structure consisting of an inner cylinder and an outer cylinder each having holes corresponding to the number of cylinders is provided on the intake side and the exhaust side,
On the intake side, the double-structured inner cylinder is fixed, and holes corresponding to the number of cylinders are aligned with the positions of the cylinders, and the outer cylinder is rotated to be positioned according to the ignition order of the explosions.
This four-stroke engine is characterized in that on the exhaust side, the double-structure outer cylinder is fixed and holes corresponding to the number of cylinders are aligned with the positions of the cylinders, and the inner cylinder is rotated to be positioned according to the ignition order of explosions .
本発明により、２重構造に吸気、排気筒を設けることにより構造が小型化でき、かつ、部品点数の少ない４サイクルエンジンを提供することができる。According to the present invention, by providing the intake and exhaust pipes in a double structure, it is possible to provide a four-stroke engine having a compact structure and a reduced number of parts.
以下、本発明に係る４サイクルエンジンを得るための好適な実施の形態について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments for obtaining a four-stroke engine according to the present invention will now be described.
図１は、実施の形態に適用されるシリンダヘッドの概略図である。吸気側については、吸気側２重構造の円筒外側１をベルト又は、チェーンで回転させる。吸気側２重構造の円筒内側２は、固定してある。排気側については、排気側２重構造の円筒外筒３は、固定してある。排気側２重構造の円筒内筒４をベルト又は、チェーンで回転させる。吸気側２重構造の円筒内側２にインジェクションノズル５を設けている。1 is a schematic diagram of a cylinder head applied to an embodiment. On the intake side, the cylinder
図２は、図１とは異なる円筒手段のサイズ位置を示した図である。図２は、構造的に図１と同一であるが、ピストンの上下２回転で円筒を一回転させるため図１のシリンダ上部に、円筒サイズが収まり切れない場合、円筒をシリンダサイドに置き、サイドからの吸入排気をする構造である。
この場合、排気側の円筒のみ、シリンダヘッド上部に置いてもよい。サイド配置の場合は、シリンダ幅は広がるが、シリンダヘッドの燃焼室は理想的な形状となる。 Figure 2 is a diagram showing the size and position of the cylindrical means different from that shown in Figure 1. Figure 2 is structurally the same as Figure 1, but in order to rotate the cylinder once with two rotations of the piston up and down, if the cylinder size cannot be accommodated in the upper part of the cylinder shown in Figure 1, the cylinder is placed on the side of the cylinder and intake and exhaust are performed from the side.
In this case, only the exhaust side cylinder may be placed on the top of the cylinder head. In the case of side placement, the cylinder width will increase, but the combustion chamber of the cylinder head will have an ideal shape.
図３は、実施の形態に適用される吸気側円筒手段の断面図である。固定の内筒に４気筒の場合には、４つのホールが横一列に並ぶ。（６）－１～（６）－４。外筒は、点火の順に合った爆発の位置にホールが有るため、ホールの位置はずれる。外筒のホール位置と内筒のホール位置とが合った所で、インジェクションにより燃料を噴射してシリンダ内に混合気を送り込む。スライドバルブ（７）は、固定した内側のホールを大きくしたり小さくしたりするためのスライドバルブであり、これにより混合気の量を調整することができる。FIG. 3 is a cross-sectional view of the intake side cylinder means applied to the embodiment. In the case of a four-cylinder engine with a fixed inner cylinder, four holes are arranged in a row. (6)-1 to (6)-4. The outer cylinder has holes at the explosion positions that correspond to the ignition order, so the hole positions are offset. When the hole positions of the outer cylinder and the inner cylinder are aligned, fuel is injected by injection to send the mixture into the cylinder. The slide valve (7) is a slide valve for enlarging or reducing the fixed inner hole, which allows the amount of mixture to be adjusted.
図４は、実施の形態に適用される吸気側円筒手段の断面図である
図３は、各気筒のホール入口にインジェクションノズルを配置しているのに対し、図４では、２重構造の内筒内をターボチャージャー又は、スーパーチャージャーにより、混合気を加圧させて、筒内に混合気が入りやすくなるようにしたもの FIG. 4 is a cross-sectional view of the intake side cylinder means applied to the embodiment. While FIG. 3 has an injection nozzle at the hole inlet of each cylinder, FIG. 4 has a turbocharger or supercharger to pressurize the air-fuel mixture in the double-structured inner cylinder, making it easier for the air-fuel mixture to enter the cylinder.
図５は、実施の形態に適用される排気側円筒手段の断面図である。マフラー（９）により、排気ガスを排出する。5 is a cross-sectional view of the exhaust side cylindrical means applied to the embodiment. Exhaust gas is discharged through a muffler (9).
１ 吸気側２重構造の円筒外筒
２ 吸気側２重構造の円筒内筒
３ 排気側２重構造の円筒外筒
４ 排気側２重構造の円筒内筒
５ インジェクションノズル1: Intake side double-layered cylindrical outer cylinder 2: Intake side double-layered cylindrical inner cylinder 3: Exhaust side double-layered cylindrical outer cylinder 4: Exhaust side double-layered cylindrical inner cylinder 5: Injection nozzle
Claims (1)
吸気側は前記２重構造の内筒を固定するとともに前記気筒数に応じた穴をシリンダーの位置に合致させ、外筒を回転させ爆発の点火順に応じた位置に設け、
排気側は前記２重構造の外筒を固定とともに前記気筒数に応じた穴をシリンダーの位置に合致させ、内筒を回転させ爆発の点火順に応じた位置に設けることを特徴とする４サイクルエンジン。 In order to perform intake and exhaust of the four-stroke engine, a cylindrical means having a double structure consisting of an inner cylinder and an outer cylinder each having holes corresponding to the number of cylinders is provided on the intake side and the exhaust side,
On the intake side, the double-structured inner cylinder is fixed, and holes corresponding to the number of cylinders are aligned with the positions of the cylinders, and the outer cylinder is rotated to be positioned according to the ignition order of the explosions.
This four-stroke engine is characterized in that on the exhaust side, the double-structure outer cylinder is fixed and holes corresponding to the number of cylinders are aligned with the positions of the cylinders, and the inner cylinder is rotated to be positioned according to the ignition order of explosions .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022157126A JP7579528B2 (en) | 2022-09-12 | 2022-09-12 | 4-stroke engine |
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| JP2022157126A JP7579528B2 (en) | 2022-09-12 | 2022-09-12 | 4-stroke engine |
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| JP2024040091A JP2024040091A (en) | 2024-03-25 |
| JP7579528B2 true JP7579528B2 (en) | 2024-11-08 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007009777A (en) | 2005-06-29 | 2007-01-18 | Soji Nakagawa | Intake and exhaust structure of internal combustion engine |
| US20180320630A1 (en) | 2017-05-04 | 2018-11-08 | Xiacameri | Internal Combustion Engine Cylinder Head with Tubular Apparatus for Intake and Exhaust |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007009777A (en) | 2005-06-29 | 2007-01-18 | Soji Nakagawa | Intake and exhaust structure of internal combustion engine |
| US20180320630A1 (en) | 2017-05-04 | 2018-11-08 | Xiacameri | Internal Combustion Engine Cylinder Head with Tubular Apparatus for Intake and Exhaust |
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| JP2024040091A (en) | 2024-03-25 |
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