JPH10196465A - Internal combustion engine of exhaust circulation and high-pressure air injection - Google Patents
Internal combustion engine of exhaust circulation and high-pressure air injectionInfo
- Publication number
- JPH10196465A JPH10196465A JP9036843A JP3684397A JPH10196465A JP H10196465 A JPH10196465 A JP H10196465A JP 9036843 A JP9036843 A JP 9036843A JP 3684397 A JP3684397 A JP 3684397A JP H10196465 A JPH10196465 A JP H10196465A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- pressure air
- exhaust gas
- air injection
- internal combustion
- 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
Classifications
-
- 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
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、排気の一部を取り入
れて、その中に燃料を供給し、シリンダーに送る。又、
高圧空気をシリンダーに噴射して、爆発燃焼させる内燃
機関に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention takes in a part of exhaust gas, supplies fuel into it, and sends it to a cylinder. or,
The present invention relates to an internal combustion engine in which high-pressure air is injected into a cylinder to explode and burn.
【０００２】[0002]
【従来の技術】従来の排気循環式内燃機関では、排気の
一部を循環させて、シリンダーに吸気させて、そこに、
高圧噴射ポンプよりの燃料を噴射爆発させているヂーゼ
ルエンジンがある。 この方式は排気ガス中のＮＯｘの
減少等の効果があった。しかしながら、ヂーゼルエンジ
ンは高圧燃料をシリンダー内に噴射、と同時に気化、爆
発燃焼が始まるため、油粒が完全に気化燃焼せず、後燃
え現象が起こる。又、不完全燃焼が起こり、煤煙の発生
等がおこる。 このため、機関効率があがらない。 加
速応答性がひくいなどの欠点があった。2. Description of the Related Art In a conventional exhaust gas recirculation type internal combustion engine, a part of exhaust gas is circulated and taken into a cylinder, where
There is a diesel engine that injects and explodes fuel from a high-pressure injection pump. This method was effective in reducing NOx in exhaust gas. However, in the diesel engine, high-pressure fuel is injected into the cylinder, and at the same time, vaporization and explosive combustion start, so that the oil particles do not completely vaporize and burn, and a post-burn phenomenon occurs. In addition, incomplete combustion occurs, and soot and the like occur. For this reason, engine efficiency does not increase. There are drawbacks such as poor acceleration response.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、後燃え現象
をなくし、機関熱効率と、加速応答性の向上をめざした
ものである。SUMMARY OF THE INVENTION The present invention aims at eliminating the afterburning phenomenon and improving the engine thermal efficiency and acceleration response.
【０００４】[0004]
【課題を解決するための手段】本発明の主要な構成を図
をもって説明すると、第１図のごとくである。すなわ
ち、エンジンシリンダー（１）の上部に高圧空気噴射口
（５）、排気弁（３）、吸気弁（４）を設ける。 排気
弁（３）より排気を大気に放出するまでの間に、排気ガ
ス取り入れ口（１０）を設けて、燃料供給装置（１１）
に導く。この燃料供給装置は燃料タンク（９）より燃料
が導かれている。又、この燃料供給装置の他端は吸気弁
（４）につながっている。一方、コンプレッサー（８）
と高圧空気タンク（７）、制御装置（６）、高圧空気噴
射口（５）を導管でつないである。The main structure of the present invention will be described with reference to the drawings as shown in FIG. That is, a high-pressure air injection port (5), an exhaust valve (3), and an intake valve (4) are provided above the engine cylinder (1). An exhaust gas intake (10) is provided before exhaust gas is released from the exhaust valve (3) to the atmosphere, and a fuel supply device (11) is provided.
Lead to. In this fuel supply device, fuel is guided from a fuel tank (9). The other end of the fuel supply device is connected to an intake valve (4). Meanwhile, the compressor (8)
And the high pressure air tank (7), the control device (6), and the high pressure air injection port (5) are connected by a conduit.
【０００５】[0005]
【作用と実施例】次に、本発明の構成の作用と実施例を
説明する。Operation and Embodiment Next, the operation and embodiment of the configuration of the present invention will be described.
【０００６】エンジンシリンダー（１）の上部の排気弁
（３）より出た排気ガスが配管により大気に放出される
までの間に排気ガス取り入れ口（１０）が設けられてい
る。これにより、排気ガスの一部がとりこまれる。 と
りこまれた排気ガスは燃料供給装置（１１）に導かれて
いる。 この燃料供給装置は燃料タンク（９）より燃料
が導かれていて、燃料供給装置の中で噴霧放出された燃
料は、導管を通って吸気弁（４）を介してシリンダー
（１）に入る。この時はピストン（２）は吸気行程で下
に下がっていく。 又、圧縮行程に入り、ピストン
（２）が上死点にゆくに従って圧縮される。 この燃料
供給装置から放出された燃料は、高温排気ガスにふれ、
導管及び吸気、圧縮行程にかかる時間のうちに完全に気
化し、又、燃料の一部が排気ガス中に残っている酸素と
反応して一次燃焼する。 このため、燃料は非常に活性
化される。なお、排気ガスの貯蔵及び、ダンパーの目的
で排気ガス取り入れ口（１０）より、燃料供給装置（１
１）の間にタンクを設けてもよい。An exhaust gas intake (10) is provided before exhaust gas discharged from an exhaust valve (3) on the upper part of the engine cylinder (1) is released to the atmosphere by a pipe. Thereby, a part of the exhaust gas is taken in. The exhaust gas taken in is guided to a fuel supply device (11). In this fuel supply device, fuel is guided from a fuel tank (9), and the fuel sprayed and discharged in the fuel supply device enters a cylinder (1) through a conduit through an intake valve (4). At this time, the piston (2) goes down during the intake stroke. Further, the compression stroke starts, and the piston (2) is compressed as it approaches the top dead center. The fuel released from this fuel supply device touches the hot exhaust gas,
In the time required for the conduit, intake and compression strokes, the gas completely evaporates, and part of the fuel reacts with oxygen remaining in the exhaust gas to perform primary combustion. For this reason, the fuel is highly activated. The fuel supply device (1) is stored in the exhaust gas inlet (10) for the purpose of storing and damping the exhaust gas.
A tank may be provided during 1).
【０００７】一方、空気はコンプレッサー（８）により
圧縮されて高圧空気タンク（７）内に蓄えられる。 こ
の高圧空気は制御装置（６）により噴射時期及び噴射量
を制御されて、高圧噴射口（５）よりシリンダー（１）
内に噴射される。噴射されたときには、そのシリンダー
内には、圧縮され非常に活性化された燃料があるため、
燃焼爆発が速やかに起こる。On the other hand, air is compressed by a compressor (8) and stored in a high-pressure air tank (7). The high-pressure air is controlled in injection timing and injection amount by a control device (6), and is supplied from a high-pressure injection port (5) to a cylinder (1).
Injected into. When injected, there is compressed and highly activated fuel in the cylinder,
A combustion explosion occurs quickly.
【０００８】図１は４サイクル機関用にシリンダー上部
に排気弁（３）及び、吸気弁（４）を設けたが、２サイ
クル機関用では、シリンダー下部にこれらに相当する排
気孔および、掃気孔を設ける。 そして、排気孔より出
た排気ガスの１部を図１の如く排気ガス取り入れ口（１
０）より取り入れ、燃料供給装置（１１）を経て掃気孔
に導くことは同じである。 掃気効率を上げるため
に、排気タービン、送風機、等を使用して、この循環排
気ガスに圧力をかけることは、従来と同じである。In FIG. 1, an exhaust valve (3) and an intake valve (4) are provided at the upper part of a cylinder for a four-stroke engine. However, for a two-cycle engine, corresponding exhaust holes and scavenging holes are provided at a lower part of the cylinder. Is provided. Then, a part of the exhaust gas discharged from the exhaust hole is exhausted as shown in FIG.
0) and leading to the scavenging holes via the fuel supply device (11) is the same. Applying pressure to the circulating exhaust gas using an exhaust turbine, a blower, or the like to increase the scavenging efficiency is the same as in the related art.
【０００９】尚、燃料供給装置（１１）内の燃料噴霧口
より排気ガス取り入れ口に近い位置に始動用燃料噴霧
口、及び、始動用連続スパーク発生部を設ける。 エン
ジン始動時に、この始動用燃料噴霧口より燃料を噴霧し
て、始動用連続スパークにより燃焼ガスを発生させ、し
かる後、燃料噴霧口より燃料を噴霧して吸気弁（４）に
おくる。 または、燃料供給装置（１１）内の燃料噴
霧口より吸気弁（４）に近い位置に、始動用連続スパー
ク発生部を設ける。 始動時には過剰の燃料を燃料噴霧
口より噴霧して、始動用連続スパークにより燃焼ガスと
未燃焼ガスを発生させ、吸気弁（４）におくる。A starting fuel spray port and a starting continuous spark generator are provided at a position closer to the exhaust gas intake port than the fuel spray port in the fuel supply device (11). When the engine is started, the fuel is sprayed from the fuel spray opening for starting, and the combustion gas is generated by the continuous spark for starting. Thereafter, the fuel is sprayed from the fuel spray opening to reach the intake valve (4). Alternatively, a starting continuous spark generator is provided at a position closer to the intake valve (4) than the fuel spray port in the fuel supply device (11). At the time of starting, excess fuel is sprayed from a fuel spray port to generate a combustion gas and an unburned gas by a continuous spark for starting, and the combustion gas and the unburned gas come to an intake valve (4).
【００１０】[0010]
【発明の効果】本発明の方法では、燃料を燃料供給装置
（１１）で高温排気ガス中に放出し、ピストンの吸気行
程（４サイクル機関）と、圧縮行程の時間を経ることに
より、完全気化、及び、一次燃焼がおこることにより非
常に活性化される。 そこえ、圧縮空気を噴射するた
め、短時間のうちに完全燃焼が完了する。 すなわち、
爆発燃焼時間が短時間で完了する。 従って、後燃え現
象が著しく改善され、機関熱効率が向上し、加速応答性
も著しく改善される。According to the method of the present invention, the fuel is released into the high-temperature exhaust gas by the fuel supply device (11), and the fuel is completely vaporized by passing through the time of the piston intake stroke (four-cycle engine) and the compression stroke. And is highly activated by the occurrence of primary combustion. Therefore, since the compressed air is injected, complete combustion is completed in a short time. That is,
Explosive combustion time is completed in a short time. Therefore, the afterburning phenomenon is significantly improved, the engine thermal efficiency is improved, and the acceleration response is also significantly improved.
【図１】本発明の構成の要素図FIG. 1 is an element diagram of the configuration of the present invention.
１はシリンダー ２はピストン ３は排気弁 ４は吸気弁 ５は高圧空気噴射口 ６は制御装置 ７は高圧空気タンク ８はコンプレッサー ９は燃料タンク １０は排気ガス取り入れ口 １１は燃料供給装置 1 is a cylinder 2 is a piston 3 is an exhaust valve 4 is an intake valve 5 is a high-pressure air injection port 6 is a control device 7 is a high-pressure air tank 8 is a compressor 9 is a fuel tank 10 is an exhaust gas intake 11 is a fuel supply device
Claims (1)
気弁よりシリンダーに吸気させる。 （ロ） 燃料供給装置をその間に置いて燃料を供給す
る。 （ハ） 高圧空気をシリンダー内に噴射して爆発燃焼さ
せる。 以上のごとく構成された排気循環と高圧空気噴射の内燃
機関。(1) Part of the exhaust gas is taken in and taken into a cylinder from an intake valve. (B) The fuel is supplied by placing the fuel supply device between them. (C) High-pressure air is injected into the cylinder to explode and burn. An exhaust gas circulation and high pressure air injection internal combustion engine configured as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9036843A JPH10196465A (en) | 1997-01-14 | 1997-01-14 | Internal combustion engine of exhaust circulation and high-pressure air injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9036843A JPH10196465A (en) | 1997-01-14 | 1997-01-14 | Internal combustion engine of exhaust circulation and high-pressure air injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10196465A true JPH10196465A (en) | 1998-07-28 |
Family
ID=12481051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9036843A Pending JPH10196465A (en) | 1997-01-14 | 1997-01-14 | Internal combustion engine of exhaust circulation and high-pressure air injection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10196465A (en) |
-
1997
- 1997-01-14 JP JP9036843A patent/JPH10196465A/en active Pending
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