JP2772427B2 - Fuel injection device - Google Patents
Fuel injection deviceInfo
- Publication number
- JP2772427B2 JP2772427B2 JP1028785A JP2878589A JP2772427B2 JP 2772427 B2 JP2772427 B2 JP 2772427B2 JP 1028785 A JP1028785 A JP 1028785A JP 2878589 A JP2878589 A JP 2878589A JP 2772427 B2 JP2772427 B2 JP 2772427B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- intake
- fuel
- combustion chamber
- center
- 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 - Lifetime
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) この発明は1気筒に3つの吸気弁を配設した燃焼室を
有するエンジンの燃料噴射装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a fuel injection device for an engine having a combustion chamber in which three intake valves are arranged in one cylinder.
(従来の技術) 従来の一般的なガソリンエンジンの燃料噴射装置とし
ては、実開昭61-149772号公報に記載の如く1気筒毎に
2つの吸気弁を配設したものにおいて、これら吸気弁に
対し燃料噴射弁より2方向に燃料を噴射するものが公知
である。(Prior Art) As a conventional general fuel injection device for a gasoline engine, as described in Japanese Utility Model Laid-Open No. 61-149772, two intake valves are arranged for each cylinder, On the other hand, a fuel injection valve that injects fuel in two directions is known.
この従来装置を第3図,第4図において説明する。第
3図,第4図において、(1)は電磁式の燃料噴射弁、
(2)はボール(3)によって開閉が制御される燃料噴
孔、(4)この燃料噴孔に連って形成された噴射燃料通
路(5a)(5b)を有するアダプタで、各噴射燃料通路
(5a)(5b)の開き角は(α)に設定されている。(6
a)(6b)は噴射燃料通路出口としての噴出口、(7)
は上記燃料噴射弁(1)が装着された吸気管、(8)は
この吸気管内に形成された吸気通路、(9)はエンジン
のシリンダ、(10)は上記吸気通路(8)に連って形成
されたシリンダの燃焼室、(11a)(11b)はこの燃焼室
における吸気通路側に装着された吸気弁で、各吸気ポー
トを開閉する。(12a)(12b)は上記燃焼室における反
吸気弁装着側に各々設けられ排気弁で、各排気ポートを
開閉する。(13)は上記各吸気通路(8)を分岐する隔
壁、(14)は上記燃焼室(10)の中心に設置された点火
プラグである。This conventional apparatus will be described with reference to FIGS. 3 and 4, (1) is an electromagnetic fuel injection valve,
(2) a fuel injection hole whose opening and closing is controlled by a ball (3); and (4) an adapter having injection fuel passages (5a) and (5b) formed in connection with the fuel injection hole. The opening angles of (5a) and (5b) are set to (α). (6
a) (6b) is the injection port as the injection fuel passage outlet, (7)
Is an intake pipe in which the fuel injection valve (1) is mounted, (8) is an intake passage formed in the intake pipe, (9) is an engine cylinder, and (10) is connected to the intake passage (8). The combustion chambers (11a) and (11b) of the cylinder thus formed are intake valves mounted on the intake passage side of the combustion chamber, and open and close the respective intake ports. (12a) and (12b) are exhaust valves provided on the side of the combustion chamber opposite to the intake valve, and open and close each exhaust port. (13) is a partition wall that branches off the intake passages (8), and (14) is a spark plug installed at the center of the combustion chamber (10).
このように構成されたものにあっては、燃料噴射弁
(1)の噴出口から角度αをもって2つの吸気弁(11
a)(11b)に対し2方向噴射するものである。In such a configuration, two intake valves (11) are formed at an angle α from the ejection port of the fuel injection valve (1).
a) Injecting in two directions to (11b).
(発明が解決しようとする課題) 上述の従来のものでは1気筒につき2つの吸気弁(11
a)(11b)を配設した燃焼室(10)を有するエンジンの
燃料噴射弁(1)において、2つの吸気弁(11a)(11
b)に燃料噴射弁(1)より2方向からの燃料を各々噴
射するものであり、従来では3つの吸気弁に1個の燃料
噴射弁にて各々燃料を噴射するものは一般的ではなかっ
た。(Problems to be Solved by the Invention) In the above-mentioned conventional one, two intake valves (11
a) In a fuel injection valve (1) of an engine having a combustion chamber (10) provided with (11b), two intake valves (11a) (11
In b), fuel is injected from two directions from the fuel injection valve (1). Conventionally, injection of fuel by one fuel injection valve to three intake valves is not common. .
この発明は、1気筒につき3つの吸気弁を配設した燃
焼室を有するエンジンにおいても、各々3つの噴射方向
を有する燃料噴射弁により3つの吸気弁に正確に燃料を
噴射すると共に吸気通路内壁への燃料付着を防止できる
燃料噴射装置を提供することを目的とする。According to the present invention, even in an engine having a combustion chamber in which three intake valves are arranged for each cylinder, fuel is accurately injected into the three intake valves by the fuel injection valves having three injection directions, and the fuel is injected into the intake passage inner wall. It is an object of the present invention to provide a fuel injection device that can prevent fuel adhesion.
(課題を解決するための手段) この発明は、1気筒に3つの吸気弁を配設した燃焼室
を有するエンジンの燃料噴射装置において、上記3つの
吸気弁に各々燃料を噴射する3つの噴射方向を有する燃
料噴射弁を、上記燃焼室の中心と上記3つの吸気弁の配
設中心とを結ぶ線上に設けると共に上記各噴射方向を、
各吸気通路の中心線の仮想交点と上記燃料噴射弁の中心
線とを結ぶ方向でかつ上記吸気通路における湾曲部の大
曲率側の内壁に燃料が接触しないように設定したもので
ある。(Means for Solving the Problems) The present invention relates to a fuel injection device for an engine having a combustion chamber in which three intake valves are arranged in one cylinder, and three injection directions for injecting fuel into the three intake valves, respectively. Are provided on a line connecting the center of the combustion chamber and the arrangement center of the three intake valves, and the respective injection directions are
The fuel injection valve is set so that fuel does not come into contact with an inner wall on a large curvature side of a curved portion in the intake passage in a direction connecting a virtual intersection of a center line of each intake passage and a center line of the fuel injection valve.
(作用) この発明にあっては、1気筒に3つの吸気弁を配設し
た燃焼室を有するエンジンにおいても、各々3つの噴射
方向を有する燃料噴射弁により、3つの吸気弁に正確に
燃料が噴射できると共に各吸気通路の内壁への燃料の付
着はなくなる。(Function) According to the present invention, even in an engine having a combustion chamber in which three intake valves are arranged in one cylinder, fuel is accurately supplied to the three intake valves by the fuel injection valves having three injection directions. Injection can be performed and fuel does not adhere to the inner wall of each intake passage.
(実施例) 以下、この発明の一実施例を図について説明する。ま
ず、第1図,第2図において、(15)は吸気管(7)に
装着された燃料噴射弁で、各々所定の角度に傾斜して形
成された3つの噴出口を有し、これら噴出口から所定の
角度巾にて3方向へ燃料が噴射される。(16a)(16b)
(16c)は上記燃焼室(10)において各々均等間隔で配
設された3つの吸気弁で、各々3つの吸気ポートを開閉
する。(17a)(17b)は吸気弁(16b)の両側に設けら
れた隔壁、(18a)(18b)(18c)はこれらの隔壁によ
って各々形成された吸気通路、(19)は吸気通路におけ
る湾曲部の大曲率側の内壁、(D)は吸気通路(18b)
の中心線、(E)は吸気通路(18a)の中心線、(C)
は上記各中心線(D),(E)の仮想交点、(F)は燃
料噴射弁(15)の中心線、(G)は燃料噴射弁(15)に
おける吸気弁(16b)への噴射方向である。点火プラグ
(14)は燃焼室(10)の中心(B)に装着されており、
また、3つの吸気弁(16a)(16b)(16c)は中央の吸
気弁(16b)を中心として、他の2つの吸気弁(16a)
(16c)は対称的に設けられている。An embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 1 and 2, reference numeral (15) denotes a fuel injection valve mounted on an intake pipe (7), which has three injection ports each formed at a predetermined angle. Fuel is injected from the outlet in three directions at a predetermined angular width. (16a) (16b)
(16c) is three intake valves arranged at equal intervals in the combustion chamber (10), and opens and closes three intake ports respectively. (17a) and (17b) are partitions provided on both sides of the intake valve (16b), (18a), (18b) and (18c) are intake passages formed by these partitions, and (19) is a curved portion in the intake passage. (D) is the intake passage (18b)
(E) is the center line of the intake passage (18a), (C)
Is a virtual intersection of each of the center lines (D) and (E), (F) is a center line of the fuel injection valve (15), and (G) is an injection direction of the fuel injection valve (15) to the intake valve (16b). It is. The spark plug (14) is mounted in the center (B) of the combustion chamber (10),
The three intake valves (16a), (16b) and (16c) are centered on the central intake valve (16b) and the other two intake valves (16a)
(16c) is provided symmetrically.
更に、燃料噴射弁(15)は第1図に示す如く、燃焼室
の中心(B)と、3つの吸気弁(16a)(16b)(16c)
の配設中心とを結ぶ線(A)上に設けられている。Further, as shown in FIG. 1, the fuel injection valve (15) has a center (B) of the combustion chamber and three intake valves (16a) (16b) (16c).
Are provided on a line (A) connecting the disposition center of (a).
以上の様に構成されたものにおいて、まず、燃料噴射
弁(15)は燃焼室(10)の中心(B)と、3つの吸気弁
(16a)(16b)(16c)の配設中心とを結ぶ線(A)上
に配設され、また、その各噴射方向は各吸気通路の中心
線(D),(E)の仮想交点(C)と燃料噴射弁(15)
の中心線(F)とを結ぶ方向(G)の如く各々3つの方
向が設定される。しかも、その燃料噴射弁(15)の噴射
方向は、各々吸気通路(18a)(18b)(18c)における
湾曲部の大曲率側の内壁(19)に燃料が接触しないよう
に設定される。上記のように設定することにより、燃料
噴射弁(15)から各吸気弁(16a)(16b)(16c)に対
して3方向にて正確に噴射でき、しかも各吸気通路(18
a)(18b)(18c)の湾曲部の大曲率側の内壁(19)に
は燃料が付着しないので、アイドル安定性が良く、排気
ガスも清浄となる。In the above configuration, first, the fuel injection valve (15) is connected to the center (B) of the combustion chamber (10) and the center of disposition of the three intake valves (16a) (16b) (16c). The fuel injection valve (15) is disposed on the connecting line (A), and its injection direction is a virtual intersection (C) between the center lines (D) and (E) of each intake passage.
Each direction is set as a direction (G) connecting the center line (F) to the center line (F). In addition, the injection direction of the fuel injection valve (15) is set so that the fuel does not contact the inner wall (19) on the large curvature side of the curved portion in each of the intake passages (18a), (18b), and (18c). By setting as described above, fuel can be accurately injected from the fuel injection valve (15) to each of the intake valves (16a) (16b) (16c) in three directions.
a) Since no fuel adheres to the inner wall (19) on the large curvature side of the curved portions of (18b) and (18c), idle stability is good and exhaust gas is clean.
(発明の効果) 以上のようにこの発明では、1気筒に3つの吸気弁を
配設した燃焼室を有するエンジンの燃料噴射装置におい
て、3つの吸気弁に各々燃料を噴射する3つの噴射方向
を有する燃料噴射弁を、燃焼室の中心と3つの吸気弁の
配設中心とを結ぶ線上に設けると共に各噴射方向を、各
吸気通路の中心線の仮想交点と燃料噴射弁の中心線とを
結ぶ方向でかつ吸気通路における湾曲部の大曲率側の内
壁に燃料が接触しないように設定することにより、3つ
の吸気弁に対して3方向の噴射にて確実に燃料を噴射で
き、しかも各吸気通路の内壁への燃料の付着を防止でき
るので、エンジンのアイドル安定性が良く、排気ガスの
清浄なエンジンを得ることができる効果がある。(Effects of the Invention) As described above, according to the present invention, in the fuel injection device for an engine having a combustion chamber in which three intake valves are arranged in one cylinder, three injection directions for injecting fuel into the three intake valves are set. The fuel injection valve is provided on a line connecting the center of the combustion chamber and the arrangement center of the three intake valves, and connects each injection direction between a virtual intersection of the center line of each intake passage and the center line of the fuel injection valve. The fuel can be reliably injected in three directions to the three intake valves by setting the fuel so that the fuel does not contact the inner wall of the curved portion in the intake passage in the direction of large curvature. Since the fuel can be prevented from adhering to the inner wall of the engine, the engine idle stability is good and an engine having a clean exhaust gas can be obtained.
第1図はこの発明の一実施例を示す平面図、第2図は第
1図装置の縦断面図、第3図(イ)は従来装置を一部断
面にて示す側面図、第3図(ロ)は従来装置における燃
料噴射弁先端部の正面図、第4図は従来装置を示す平面
図である。 図中、(1)(15)は燃料噴射弁、(7)は吸気管、
(9)はシリンダ、(10)は燃焼室、(12a)(12b)は
排気弁、(14)は点火プラグ、(16a)(16b)(16c)
は吸気弁、(17a)(17b)は隔壁、(18a)(18b)(18
c)は吸気通路、(19)は吸気通路における湾曲部の大
曲率側の内壁部、(A)は燃焼室の中心と各吸気弁の配
設中心とを結ぶ線、(B)は燃焼室の中心、(C)は各
吸気通路の中心線の仮想交点、(D)(E)は吸気通路
の中心線、(F)は燃料噴射弁の中心線、(G)は噴射
方向である。 なお、各図中同一符号は各々同一、又は相当部分を示
す。FIG. 1 is a plan view showing one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the apparatus in FIG. 1, FIG. 3 (a) is a side view showing a partial section of a conventional apparatus, and FIG. (B) is a front view of the tip of the fuel injection valve in the conventional device, and FIG. 4 is a plan view showing the conventional device. In the figure, (1) and (15) are fuel injection valves, (7) is an intake pipe,
(9) cylinder, (10) combustion chamber, (12a) (12b) exhaust valve, (14) spark plug, (16a) (16b) (16c)
Is the intake valve, (17a) (17b) is the partition, (18a) (18b) (18
c) is an intake passage, (19) is an inner wall portion on the side of a large curvature of a curved portion in the intake passage, (A) is a line connecting the center of the combustion chamber and the arrangement center of each intake valve, and (B) is a combustion chamber. (C) is the virtual intersection of the center lines of the intake passages, (D) and (E) are the center lines of the intake passage, (F) is the center line of the fuel injector, and (G) is the injection direction. In the drawings, the same reference numerals indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−154859(JP,A) 特開 平2−30920(JP,A) 実開 平1−139079(JP,U) 実開 平1−95572(JP,U) 実開 昭59−123660(JP,U) (58)調査した分野(Int.Cl.6,DB名) F02M 61/18 320 F02M 69/00 360 F02M 69/04──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-154859 (JP, A) JP-A-2-30920 (JP, A) JP-A 1-139079 (JP, U) JP-A-1-39079 95572 (JP, U) Actually open sho 59-123660 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) F02M 61/18 320 F02M 69/00 360 F02M 69/04
Claims (1)
有するエンジンの燃料噴射装置において、上記3つの吸
気弁に各々燃料を噴射する3つの噴射方向を有する燃料
噴射弁を、上記燃焼室の中心と上記3つの吸気弁の配設
中心とを結ぶ線上に設けると共に上記各噴射方向を、上
記燃料噴射弁から上記燃焼室の各吸気弁に到る各吸気通
路の中心線の仮想交点と上記燃料噴射弁の中心線とを結
ぶ方向でかつ上記吸気通路における湾曲部の大曲率側の
内壁に燃料が接触しないように設定したことを特徴とす
る燃料噴射装置。1. A fuel injection device for an engine having a combustion chamber in which three intake valves are disposed in one cylinder, wherein the fuel injection valve having three injection directions for injecting fuel into the three intake valves is provided. The fuel injection valve is provided on a line connecting the center of the combustion chamber and the arrangement center of the three intake valves, and each injection direction is imaginary of a center line of each intake passage extending from the fuel injection valve to each intake valve of the combustion chamber. A fuel injection device, wherein the fuel injection device is set in a direction connecting an intersection and a center line of the fuel injection valve so that fuel does not contact an inner wall of the intake passage on a large curvature side of the curved portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1028785A JP2772427B2 (en) | 1989-02-09 | 1989-02-09 | Fuel injection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1028785A JP2772427B2 (en) | 1989-02-09 | 1989-02-09 | Fuel injection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02211376A JPH02211376A (en) | 1990-08-22 |
JP2772427B2 true JP2772427B2 (en) | 1998-07-02 |
Family
ID=12258078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1028785A Expired - Lifetime JP2772427B2 (en) | 1989-02-09 | 1989-02-09 | Fuel injection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2772427B2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0755330Y2 (en) * | 1987-12-18 | 1995-12-20 | 三菱自動車工業株式会社 | Internal combustion engine with three intake valves |
JPH01139079U (en) * | 1988-03-15 | 1989-09-22 |
-
1989
- 1989-02-09 JP JP1028785A patent/JP2772427B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02211376A (en) | 1990-08-22 |
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Legal Events
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LAPS | Cancellation because of no payment of annual fees |