JPS63201317A - Supercharging type four-cycle engine - Google Patents
Supercharging type four-cycle engineInfo
- Publication number
- JPS63201317A JPS63201317A JP3427487A JP3427487A JPS63201317A JP S63201317 A JPS63201317 A JP S63201317A JP 3427487 A JP3427487 A JP 3427487A JP 3427487 A JP3427487 A JP 3427487A JP S63201317 A JPS63201317 A JP S63201317A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- intake air
- intake
- shroud
- combustion 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000006200 vaporizer 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
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Landscapes
- Supercharger (AREA)
Abstract
Description
【発明の詳細な説明】
に）産業上の利用分野
本発明は、クランク室過給式４サイクルエンジンに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a crank chamber supercharged four-stroke engine.
Ｑ３） 従来の技術
従来、４サイクルエンジンに過給を行うものとして、圧
縮機を外設して過給を行うターボチャージャーやスーパ
ーチャージャーなどが知られる。Q3) Conventional technology Conventionally, turbochargers and superchargers, which perform supercharging using an external compressor, are known as devices that supercharge a four-stroke engine.
また、圧縮行程と排気行程におけるピストン上昇時の負
圧を利用してクランク室に吸気を吸入し、これを吸気行
程におけるピストン下降時に燃焼室内に圧送する過給式
４サイクルエンジンは知られる。Additionally, a supercharged four-stroke engine is known in which intake air is sucked into a crank chamber using negative pressure when the piston rises during the compression stroke and exhaust stroke, and is forced into the combustion chamber when the piston descends during the intake stroke.
Ｃ） 発明が解決しようとする問題点
しかし、これら圧縮機を外設したものでは構造も複雑で
あシ場所もとった。C) Problems to be Solved by the Invention However, these systems in which the compressor is installed externally have a complicated structure and take up a lot of space.
また、従来の過給式４サイクルエンジンにおいては、圧
縮行程と排気行程でクランク室に吸気を吸入しているが
、排気行程では圧縮行程で吸入した吸気がクランク室内
にあるためほとんど吸入できず、実質上は１行程容積分
はどの吸気しか吸入できず、燃焼室に送り込む事ができ
なかった。In addition, in conventional supercharged 4-stroke engines, intake air is drawn into the crank chamber during the compression stroke and exhaust stroke, but during the exhaust stroke, the intake air drawn during the compression stroke is inside the crank chamber, so almost no intake air can be drawn into the crank chamber. In reality, only one stroke volume of intake air could be taken in, and it could not be sent into the combustion chamber.
従って、過給というよシは吸気抵抗を軽減する程度のも
のでしかなかったため、大巾な出力の向上は期待できな
かった。Therefore, supercharging was only used to reduce intake resistance, so a significant increase in output could not be expected.
また、この過給式４サイクルエンジンは、高速回転では
クランク室内の圧力変動が速くなり過ぎて吸気を送り出
すポンプ作用が弱まシ、自然吸気のものに比べ、かえっ
て吸気抵抗が大きくなシ高速回転での出力が低下してし
まう。Additionally, this supercharged 4-stroke engine suffers from the pressure fluctuations in the crank chamber becoming too rapid at high speeds, which weakens the pumping action that sends out the intake air. output will decrease.
従って、これを補うためにクランク室を介する吸気系と
は別に自然吸気を行う吸気系を設けるなどしたものが提
案されたが、これらは構造も複雑となり、過給効果を向
上させるものではないため高速回転での出力の向上は余
り期待できなかった。Therefore, in order to compensate for this, it has been proposed to install an intake system that performs natural intake separately from the intake system that goes through the crank chamber, but these systems have a complicated structure and do not improve the supercharging effect. It was not possible to expect much improvement in output at high speed rotation.
■ 問題を解決するための手段
従来のものが持つ以上のような問題を解決するために、
この発明は次のような構成にした。■Means to solve problems In order to solve problems beyond those of conventional methods,
This invention has the following configuration.
吸気をクランク室内に吸入し、燃焼室内に圧縮して送り
込む過給式４サイクルエンジンであってクランクシャフ
トと連動して回転するシャフトバルブに羽根車を設け囲
い板を設けたものを吸気の吸入系として設けたことを特
徴とする。The intake system is a supercharged 4-cycle engine that sucks intake air into the crank chamber, compresses it, and sends it into the combustion chamber.The intake system consists of a shaft valve that rotates in conjunction with the crankshaft, and is equipped with an impeller and a shroud. It is characterized by being established as
（ト）作用及び実施例
本発明の作用及び実施例を図面を参照しながら説明する
。(g) Effects and Examples Effects and Examples of the present invention will be described with reference to the drawings.
図面は本発明の実施例を示すものであり、（１）はシャ
フトバルブ、（２）は羽根車、（３）は囲い板、（４）
Ｈパルプハウジング、（５）は連結部、（６）は気化器
、（７）は吸入通路、（８）はクランク室、（９）はク
ランクピン０〔はクランクシャフト、α１）はコネクテ
ィングロッド、αのはピストン、 Ｑ３はシリンダー、
α４）は燃焼室、（１５１は吸気通路、Ｈは吸気パルプ
、Ｑ？）は排気パルプ、（！樽は排気通路を示す。The drawings show an embodiment of the present invention, in which (1) shows a shaft valve, (2) an impeller, (3) a shroud, and (4)
H pulp housing, (5) is the connection part, (6) is the carburetor, (7) is the suction passage, (8) is the crank chamber, (9) is the crank pin 0 [is the crankshaft, α1] is the connecting rod, α is the piston, Q3 is the cylinder,
α4) indicates the combustion chamber, (151 indicates the intake passage, H indicates the intake pulp, Q?) indicates the exhaust pulp, and (! barrel indicates the exhaust passage.
パルプハウジング（４）の吸入通路（７）には気化器（
６）が形成され、この吸入通路（７）は羽根車（２）及
び囲い板（３）を設けたシャフトバルブ（１）を介して
クランク室（８）に連通しており、このシャフトバルブ
（１）ハ連結部（５）でクランクピン（９）と連結し、
クランクシャツ）０１と連動して回転するものとし、吸
入通路（７）の開閉を行い圧縮行程と排気行程における
ピストンａの上昇時の負圧と羽根車が回転することによ
り生じるポンプ作用によシフランク室（８）テ吸気を吸
入するようにし、囲い板（３）により羽根車（２）のポ
ンプ効率を向上させると共にクランク室（８）内の吸気
がシャフトバルブ（１）内に逆流するのを阻止するよう
にした。A vaporizer (
6) is formed, and this suction passage (7) communicates with the crank chamber (8) via a shaft valve (1) provided with an impeller (2) and a shroud (3). 1) Connect to the crank pin (9) at the connecting part (5),
It rotates in conjunction with the crankshaft (crank shirt) 01, opens and closes the suction passage (7), and uses the negative pressure when the piston a rises during the compression stroke and exhaust stroke and the pumping action generated by the rotation of the impeller. The intake air is drawn into the crank chamber (8), and the shroud (3) improves the pumping efficiency of the impeller (2) and prevents the intake air in the crank chamber (8) from flowing back into the shaft valve (1). I tried to prevent it.
そして、クランク室（８）より吸気パルプＯｅを介して
燃焼室αａに連なる吸気通路（１９を形成し、吸気行程
におけるピストンａの下降時の圧力と羽根車（２）のポ
ンプ作用によシ吸気を燃焼室αａに圧送するようにした
。An intake passage (19) is formed which connects the crank chamber (8) to the combustion chamber αa via the intake pulp Oe, and the intake air is generated by the pressure when the piston a descends during the intake stroke and by the pumping action of the impeller (2). is pumped into the combustion chamber αa.
従って、本発明に係る過給式４サイクルエンジンでは、
ピストン（１３の往復運動によるポンプ作用と羽根車（
２）の回転によって生じるポンプ作用により過給を行う
ため、多量の吸気を燃焼室α４）内に送り込むことがで
き、ピストンα２の往復運動によるポンプ作用が弱まる
高速回転では、羽根車（２）の回転によるポンプ作用が
高まるため高速回転においても大巾な過給効果を得るこ
とができ、あらゆる回転数において大巾に出力が向上す
る。Therefore, in the supercharged four-stroke engine according to the present invention,
Pumping action due to the reciprocating movement of the piston (13) and the impeller (
Since supercharging is performed by the pumping action generated by the rotation of the impeller (2), a large amount of intake air can be sent into the combustion chamber α4). Since the pumping effect due to rotation is increased, a large supercharging effect can be obtained even at high speed rotation, and output is greatly improved at all rotation speeds.
また、構造も簡単であシ、過給機を設けるための場所も
必要としない。Furthermore, the structure is simple and no space is required for a supercharger.
なお、羽根車（２）を放射状に穴を多数開けたものにし
ても同じ目的を達することはできる。Note that the same purpose can be achieved even if the impeller (2) is made with a number of holes radially formed.
また、シャフトバルブ（１）とクランクシャフト（ＩＩ
を連結する方法には次のようなものがある。In addition, the shaft valve (1) and the crankshaft (II
There are several ways to connect:
クランクピン（９）を両端で支持する場合は、シャフト
バルブ（りとクランクシャフト０〔及びクランクピン（
９）を一体で作るか、シャフトバルブ（１）の連結部（
５）を穴とし、これにクランクピン（９）ヲ設けるなど
の方法があシ、クランクピン（９）を一端で支持する場
合には、連結部（５）を切り欠き又は長大とし、これに
クランクピン（９）を設けるなどの方法がある。When supporting the crank pin (9) at both ends, use the shaft valve (and crank shaft 0) and the crank pin (
9) in one piece, or connect the shaft valve (1) (
5) is a hole and a crank pin (9) is installed in it.If the crank pin (9) is to be supported at one end, the connecting part (5) is cut out or long, and the crank pin (9) is installed in this hole. There are methods such as providing a crank pin (9).
０ 発明の効果
本発明に係る過給式４サイクルエンジンでは、ピストン
の往復運動によるポンプ作用と羽根車の回転によって生
じるポンプ作用により過給を行うため、多量の吸気を燃
焼室に送り込むことができピストンの往復運動によるポ
ンプ作用が弱まる高速回転では、羽根車の回転によるポ
ンプ作用が高まるため高速回転においても大巾な過給効
果を得ることができ、あらゆる回転数において大巾に出
力が向上する効果を有する。0 Effects of the Invention In the supercharged four-stroke engine according to the present invention, supercharging is performed by the pump action caused by the reciprocating movement of the piston and the pump action generated by the rotation of the impeller, so a large amount of intake air can be sent into the combustion chamber. At high speed rotations, where the pumping action of the piston's reciprocating motion is weakened, the pumping action of the impeller's rotation increases, making it possible to obtain a wide-ranging supercharging effect even at high speeds, resulting in a significant increase in output at all rotational speeds. have an effect.
また、構造も簡単であシ、過給機を設けるための場所も
必要としない。Furthermore, the structure is simple and no space is required for a supercharger.
図面は本発明の実施例を示し第１図は側断面図第２図は
縦断面図、第６図は羽根車及び囲い板を設けたシャフト
バルブの斜視図、第４図は羽根車を放射状に穴を多数開
けたものとしたシャフトバル、プの斜視図である。
（１）・・・シャフトバルブ （２）・・・羽根車 （
３）・・・囲い板（８）・・・クランク室 Ｑｌ・・・
クランクシャフト αａ・・・燃焼室The drawings show an embodiment of the present invention. FIG. 1 is a side sectional view, FIG. 2 is a longitudinal sectional view, FIG. 6 is a perspective view of a shaft valve provided with an impeller and a shroud, and FIG. 4 is a radial view of the impeller. FIG. 2 is a perspective view of a shaft valve with a large number of holes drilled therein. (1)...Shaft valve (2)...Impeller (
3)...Shrouding plate (8)...Crank chamber Ql...
Crankshaft αa... combustion chamber
Claims (1)
込む過給式４サイクルエンジンであつてクランクシャフ
トと連動して回転するシャフトバルブに羽根車を設け囲
い板を設けたものを吸気の吸入系として設けたことを特
徴とする過給式４サイクルエンジン。The intake system is a supercharged 4-stroke engine that sucks intake air into the crank chamber, compresses it, and sends it into the combustion chamber.The intake system is a supercharged 4-stroke engine that draws intake air into the crank chamber, compresses it, and sends it into the combustion chamber.The intake system consists of a shaft valve that rotates in conjunction with the crankshaft, and is equipped with an impeller and a shroud. A supercharged 4-stroke engine characterized by the fact that it is equipped with a
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3427487A JPS63201317A (en) | 1987-02-16 | 1987-02-16 | Supercharging type four-cycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3427487A JPS63201317A (en) | 1987-02-16 | 1987-02-16 | Supercharging type four-cycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63201317A true JPS63201317A (en) | 1988-08-19 |
Family
ID=12409583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3427487A Pending JPS63201317A (en) | 1987-02-16 | 1987-02-16 | Supercharging type four-cycle engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63201317A (en) |
-
1987
- 1987-02-16 JP JP3427487A patent/JPS63201317A/en active Pending
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