JPH09256928A - Intake device for cylinder direct injection type gasoline engine - Google Patents
Intake device for cylinder direct injection type gasoline engineInfo
- Publication number
- JPH09256928A JPH09256928A JP8066486A JP6648696A JPH09256928A JP H09256928 A JPH09256928 A JP H09256928A JP 8066486 A JP8066486 A JP 8066486A JP 6648696 A JP6648696 A JP 6648696A JP H09256928 A JPH09256928 A JP H09256928A
- Authority
- JP
- Japan
- Prior art keywords
- injection valve
- fuel injection
- fuel
- intake
- cylinder head
- 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.)
- Granted
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】 この発明は、筒内直噴式ガ
ソリン機関の吸気装置に関する。TECHNICAL FIELD The present invention relates to an intake device for a cylinder direct injection gasoline engine.
【０００２】[0002]
【従来の技術】 従来の燃料噴射式エンジンの吸気装置
としては、例えば、図６に示すようなものがある。（実
開平３−４３５７４号公報参照） 図において、１０１はエンジン、１０２はサージタン
ク、１０３は吸気通路、１０４は燃料通路、１０５はブ
ラケット部、１０６は噴射弁であって、この従来技術
は、前記サージタンク１０２に、上流端を接続し、略Ｃ
字状に湾曲した吸気管１０３の下流端をシリンダ毎にエ
ンジン１０１に接続した燃料噴射式エンジンの吸気装置
に於て、上記各吸気管１０３の上流端近傍にシリンダ列
方向に延びる燃料通路１０４を各吸気管１０３と一体的
に配設するとともに、燃料通路１０４と各吸気管１０３
の下流近傍との間にそれそれ噴射弁１０６を連結したこ
とを特徴とする燃料噴射式エンジンの吸気装置である。2. Description of the Related Art As a conventional intake system for a fuel injection engine, there is, for example, one shown in FIG. (See Japanese Utility Model Laid-Open No. 3-43574) In the figure, 101 is an engine, 102 is a surge tank, 103 is an intake passage, 104 is a fuel passage, 105 is a bracket portion, and 106 is an injection valve. Connect the upstream end to the surge tank 102, and
In an intake system of a fuel injection engine in which a downstream end of a curved intake pipe 103 is connected to the engine 101 for each cylinder, a fuel passage 104 extending in the cylinder row direction is provided near the upstream end of each intake pipe 103. The intake pipe 103 and the fuel passage 104 are arranged integrally with each intake pipe 103.
It is an intake device for a fuel injection type engine, characterized in that an injection valve 106 is connected between the injection valve 106 and the vicinity of the downstream side.
【０００３】[0003]
【発明が解決しようとする課題】 しかしながら、この
ような従来の燃料噴射式エンジンの吸気装置にあって
は、吸気管１０３の下流近傍に噴射弁１０６の先端を配
設し、吸気管１０３の上流端とのあいだに連結する構造
となっていたため、吸気管１０３の管路抵抗を悪化させ
ぬよう、吸気管１０３の形状は限定されてしまう。ま
た、他方、燃料をシリンダ内に直接噴射するエンジンに
於ては、吸気管１０３は略Ｕ字形状となり、管路抵抗の
悪化は免れない。また、部品点数としては、燃料配管経
路の削減が行えるが、噴射弁１０６の固定用ブラケット
は必要であったという問題点があった。However, in such a conventional fuel injection system intake device for a fuel injection engine, the tip of the injection valve 106 is arranged near the downstream of the intake pipe 103, and the upstream end of the intake pipe 103 is arranged. Since the structure is such that the intake pipe 103 is connected to the end, the shape of the intake pipe 103 is limited so as not to deteriorate the duct resistance of the intake pipe 103. On the other hand, in an engine in which fuel is directly injected into the cylinder, the intake pipe 103 has a substantially U-shape, and deterioration of the conduit resistance cannot be avoided. Further, as for the number of parts, although the fuel piping path can be reduced, there is a problem that a bracket for fixing the injection valve 106 is necessary.
【０００４】この発明は、このような従来の問題点に着
目してなされたもので、筒内に直接燃料を噴射するガソ
リン機関に於て、シリンダヘッドの吸気ポート端面を燃
料噴射弁取り付け中心線と直交する面で形成し、燃料噴
射弁を固定するブラケット機能と、燃料供給配管機能を
吸気管下流の接合部に併せ持たせることにより、上記問
題点を解決することを目的としている。The present invention has been made in view of such a conventional problem, and in a gasoline engine in which fuel is directly injected into a cylinder, the intake port end surface of the cylinder head is attached to the center line of the fuel injection valve. It is an object of the present invention to solve the above-mentioned problems by providing a joint function downstream of the intake pipe with a bracket function of fixing the fuel injection valve and a bracket function of forming a surface orthogonal to the above.
【０００５】[0005]
【課題を解決するための手段】 上述の目的を達成する
ため、請求項１記載の発明では、筒内に燃料を直接噴射
する直噴式ガソリン機関において、燃料噴射弁を機関上
方からみて吸気ポートの中心線に略平行に配設し、シリ
ンダヘッドの吸気ポートの上流側端面を前記燃料噴射弁
取付時の燃料噴射弁軸方向の中心線と直交する面で形成
すると共に、前記シリンダヘッドの吸気ポート上流側端
面と吸気管との接合面と同一平面内に前記燃料噴射弁固
定用の取付平面を有し、前記吸気管と燃料噴射弁とを係
合させてシリンダヘッドに一体的に取り付け可能となる
よう構成し、且つ、吸気管下流端とシリンダヘッドとの
接合部に燃料噴射弁への燃料供給機能を有する構成とし
た。また、請求項２記載の発明では、筒内に燃料を直接
噴射する直噴式ガソリン機関において、燃料噴射弁を機
関上方からみて吸気ポートの中心線に略平行に配設し、
シリンダヘッドの吸気ポートの上流側端面を前記燃料噴
射弁取付時の燃料噴射弁軸方向の中心線と直交する面で
形成すると共に、燃料噴射弁を固定するブラケット機能
と燃料供給配管機能とを吸気管下流側のシリンダヘッド
との接合部に併せ持たせる構成とした。また、請求項３
記載の発明では、前記燃料噴射弁全体を包括する噴射弁
固定用スリーブと吸気管下流端フランジ部との接合部
に、インテークマニホールドガスケットを介装するよう
に配設し、該インテークマニホールドガスケットを介し
て前記燃料噴射弁を固定する様に構成した。また、請求
項４記載の発明では、前記吸気管下流端フランジ部とシ
リンダヘッドとを接合する取付ボルト配置の内、燃料噴
射弁固定のための取付ボルトの配置を、各気筒に配設さ
れた噴射弁の中心点を結んだクランク軸線方向の線上近
傍に設けた構成とした。また、請求項５記載の発明で
は、前記吸気管下流端と前記シリンダヘッドとの接合部
に設けられた燃料配管機能であって、燃料配管用通路を
各気筒に配設された燃料噴射弁の中心点を結んだクラン
ク軸線方向の線からオフセットさせ、平行に配設する構
成とした。また、請求項６記載の発明では、筒内に燃料
を直接噴射する直噴式ガソリン機関において、燃料噴射
弁を機関上方からみて吸気ポートの中心線に略平行に配
設し、且つ、燃料噴射弁をシリンダヘッド内に挿入する
ように構成すると共に、該シリンダヘッドの吸気ポート
上流側端面を前記燃料噴射弁取付時の燃料噴射弁軸方向
の中心線と直交する面で形成し、前記燃料噴射弁を固定
するブラケット機能と燃料供給配管機能とを吸気管下流
側のシリンダヘッドとの接合部に併せ持ち、且つ、シリ
ンダヘッド内に配設された燃料噴射弁を取り囲む隔壁
と、吸気管下流側のシリンダヘッドとの接合部とで燃料
噴射弁を密閉保持する構成とした。In order to achieve the above-mentioned object, in the invention according to claim 1, in a direct injection type gasoline engine in which fuel is directly injected into a cylinder, the fuel injection valve is viewed from above the intake port of the intake port. The cylinder head is arranged substantially parallel to the center line, and the upstream end surface of the intake port of the cylinder head is formed by a surface orthogonal to the center line in the axial direction of the fuel injection valve when the fuel injection valve is attached. It has a mounting plane for fixing the fuel injection valve in the same plane as the joint surface between the upstream end surface and the intake pipe, and can be integrally mounted on the cylinder head by engaging the intake pipe and the fuel injection valve. In addition, it is configured to have a function of supplying fuel to the fuel injection valve at the joint between the downstream end of the intake pipe and the cylinder head. According to the second aspect of the invention, in a direct injection type gasoline engine that directly injects fuel into the cylinder, the fuel injection valve is arranged substantially parallel to the center line of the intake port when viewed from above the engine,
The upstream end surface of the intake port of the cylinder head is formed by a surface orthogonal to the center line in the axial direction of the fuel injection valve when the fuel injection valve is attached, and the bracket function for fixing the fuel injection valve and the fuel supply piping function are taken in. The joint with the cylinder head on the downstream side of the pipe is also provided. Claim 3
In the invention described, at the joint between the injection valve fixing sleeve that covers the entire fuel injection valve and the intake pipe downstream end flange portion, the intake manifold gasket is arranged so as to be interposed, and the intake manifold gasket is interposed. The fuel injection valve is fixed. Further, in the invention according to claim 4, among the mounting bolt arrangements for joining the intake pipe downstream end flange portion and the cylinder head, the arrangement of the mounting bolts for fixing the fuel injection valve is arranged in each cylinder. The structure is provided near the line in the crankshaft axis direction that connects the center points of the injection valves. Further, in the invention according to claim 5, there is provided a fuel pipe function provided at a joint portion between the downstream end of the intake pipe and the cylinder head, and a fuel pipe passage of a fuel injection valve arranged in each cylinder is provided. It is arranged to be offset from the line connecting the center points in the direction of the crankshaft axis and arranged in parallel. In a sixth aspect of the invention, in a direct injection gasoline engine that directly injects fuel into a cylinder, the fuel injection valve is arranged substantially parallel to the center line of the intake port when viewed from above the engine, and the fuel injection valve Is inserted into the cylinder head, and the intake port upstream end surface of the cylinder head is formed by a surface orthogonal to the center line of the fuel injection valve axial direction when the fuel injection valve is attached. And a partition wall surrounding the fuel injection valve disposed in the cylinder head, and a cylinder on the downstream side of the intake pipe. The fuel injection valve is hermetically held by the joint with the head.
【０００６】[0006]
【発明の実施の形態】 以下、この発明を図面に基づい
て説明する。図１は、この発明の実施の形態１を示す図
である。まず構成を説明すると、１はシリンダヘッドで
あり、燃料噴射弁６はシリンダヘッド１にコルゲートワ
ッシャー７を介して接続し、前記燃料噴射弁６の噴射口
は直接燃焼室に接続している。前記燃料噴射弁６の他端
はＯリング９が取り付けられている。３は接合部を含む
吸気管であり、この吸気管３の吸気通路下流のフランジ
部３ａには燃料通路４が配設されている。８はスリーブ
あって、前記燃料噴射弁６と吸気管３との間に配設され
ている。前記シリンダヘッド１の吸気管フランジ部１ａ
は燃料噴射弁６の中心線に直行する面で形成されてい
る。Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a first embodiment of the present invention. First, the structure will be described. 1 is a cylinder head, a fuel injection valve 6 is connected to the cylinder head 1 via a corrugated washer 7, and an injection port of the fuel injection valve 6 is directly connected to a combustion chamber. An O-ring 9 is attached to the other end of the fuel injection valve 6. Reference numeral 3 denotes an intake pipe including a joint portion, and a fuel passage 4 is arranged in a flange portion 3a downstream of the intake passage of the intake pipe 3. Reference numeral 8 denotes a sleeve, which is arranged between the fuel injection valve 6 and the intake pipe 3. Intake pipe flange portion 1a of the cylinder head 1
Is formed by a surface orthogonal to the center line of the fuel injection valve 6.
【０００７】次に作用を説明する。前記シリンダヘッド
１の吸気管フランジ部１ａは、燃料噴射弁６の中心線に
直交する面で形成されており、前記吸気管３と燃料噴射
弁６を吸気管３のフランジ部３ａでシリンダヘッド１に
共締めできる。尚、吸気管フランジ部１ａの端面を図２
に示すが、そのボルト配置は、下端側のボルト（ボルト
締結孔１ｂ）が、噴射弁取付中心軸線（すなわち、燃料
噴射弁６を挿通させる噴射弁挿通孔１ｃの中心を通る
線）Ｃ上にあり、燃料噴射弁６の取付角度誤差が生じな
い。さらに、上端側のボルト（ボルト締結孔１ｄ）配置
関係は、吸気管３の開口部１ｅを中心を挟んで下側のボ
ルト（ボルト締結孔１ｂ）と略対称の位置とした。この
ため吸気管３を固定する取付ボルトの本数は、従来の吸
気管固定用と同等となり、燃料噴射弁６の固定用のボル
ト本数が削減できた。また、これにともない、前記吸気
管３に設けられた、燃料通路４はボルト締結孔１ｂと干
渉しないように下方にオフセットし配置されている。Next, the operation will be described. The intake pipe flange portion 1a of the cylinder head 1 is formed by a surface orthogonal to the center line of the fuel injection valve 6, and the intake pipe 3 and the fuel injection valve 6 are connected to each other by the flange portion 3a of the intake pipe 3. Can be tightened together. The end surface of the intake pipe flange portion 1a is shown in FIG.
As shown in Fig. 4, the bolts are arranged such that the bolts on the lower end side (bolt fastening holes 1b) are on the injection valve mounting center axis line (that is, a line passing through the center of the injection valve insertion hole 1c through which the fuel injection valve 6 is inserted) C. There is no error in the mounting angle of the fuel injection valve 6. Further, the arrangement of the bolts (bolt fastening holes 1d) on the upper end side is substantially symmetrical to the bolts (bolt fastening holes 1b) on the lower side with the opening 1e of the intake pipe 3 in between. Therefore, the number of mounting bolts for fixing the intake pipe 3 is the same as that for fixing the conventional intake pipe, and the number of bolts for fixing the fuel injection valve 6 can be reduced. Along with this, the fuel passage 4 provided in the intake pipe 3 is offset downward so as not to interfere with the bolt fastening hole 1b.
【０００８】図３にはインテークマニホルドガスケット
１０（以下、ガスケット１０）を示すが、吸気管３の周
囲と同様、同一の部材で作られており吸気管３はガスケ
ット１０を介して前記スリーブ８を押し付ける。これに
より、ガスケット１０のつぶれ代によらず、燃料噴射弁
６を押し付けることができる。FIG. 3 shows an intake manifold gasket 10 (hereinafter referred to as a gasket 10), which is made of the same member as the periphery of the intake pipe 3, and the intake pipe 3 has the sleeve 8 via the gasket 10. Press down. As a result, the fuel injection valve 6 can be pressed regardless of the crushing margin of the gasket 10.
【０００９】前記シリンダヘッド１の吸気管３端面は、
燃料噴射弁６周囲まで延長されている。該燃料噴射弁６
が挿入される吸気管フランジ部１ａの噴射弁挿通孔１ｃ
は、組み立て性を考慮して、燃料噴射弁６の最大径より
大径に形成されている。前記燃料噴射弁６は吸気管フラ
ンジ部１ａの端面までの長さを後端のパイプ部６ａの長
さで調節する構造であり、異機種間での部品共有化を計
っている。The end surface of the intake pipe 3 of the cylinder head 1 is
It is extended to around the fuel injection valve 6. The fuel injection valve 6
Injection valve insertion hole 1c of intake pipe flange 1a
Is formed to have a diameter larger than the maximum diameter of the fuel injection valve 6 in consideration of assemblability. The fuel injection valve 6 has a structure in which the length to the end surface of the intake pipe flange portion 1a is adjusted by the length of the pipe portion 6a at the rear end, and parts are shared between different models.
【００１０】次に図４は、実施の形態２を示す。この実
施の形態２は、燃料噴射弁６の先端部にねじ部（図示せ
ず）を設け、該ねじ部でシリンダヘッド１に固定する構
造となっているため、吸気管フランジ部１ａでは、固定
する必要がなくなる。従って、ガスケットは従来のもの
を流用できる。また、スリーブ８も必要なくなり、部品
点数を削減できる。Next, FIG. 4 shows a second embodiment. The second embodiment has a structure in which a screw portion (not shown) is provided at the tip of the fuel injection valve 6 and the screw portion is fixed to the cylinder head 1. Therefore, the intake pipe flange portion 1a is fixed. There is no need to do it. Therefore, the conventional gasket can be used. Further, the sleeve 8 is not necessary, and the number of parts can be reduced.
【００１１】次に図５は、実施の形態３を示す。この実
施の形態３は、吸気管３の上方に燃料噴射弁６を配置し
たため、燃料噴射弁６は、シリンダヘッド１に穴を開
け、配置することになる。さらに、実施の形態１で示し
たようにフランジ部３ａで燃料噴射弁６を固定すること
により、噴射弁６は密閉され、燃料噴射弁６の作動音の
抑止、および燃料噴射弁６の燃料漏れ時のフェールセー
フ機構も有する。Next, FIG. 5 shows a third embodiment. In the third embodiment, since the fuel injection valve 6 is arranged above the intake pipe 3, the fuel injection valve 6 is arranged by making a hole in the cylinder head 1. Further, by fixing the fuel injection valve 6 with the flange portion 3a as shown in the first embodiment, the injection valve 6 is sealed, the operation noise of the fuel injection valve 6 is suppressed, and the fuel leakage of the fuel injection valve 6 is suppressed. It also has a fail-safe mechanism for time.
【００１２】以上説明してきたように、この実施の形態
によれば、その構成を筒内に直接燃料を噴射する内燃エ
ンジンに於て、シリンダヘッド１の吸気ポート端面（吸
気管フランジ部１の端面）を燃料噴射弁６の取り付け中
心線と直行する面で形成し、燃料供給配管機能を吸気管
３の下流の接合部に併せ持たせる構造としたため、吸気
管３のフランジ部３ａで燃料噴射弁６をシリンダヘッド
１に共締めでき、燃料噴射弁６の固定用のボルト本数が
削減でき、且つ燃料配管系の部品が削滅できるという効
果が得られる。各実施の形態は、それぞれ上記共通の効
果に加えて、さらに以下のような効果がある。実施の形
態１では、噴射弁固定機能を吸気管フランジ部に併せ持
たせる事ができる。実施の形態３では、遮音効果をあわ
せ持つ。As described above, according to this embodiment, in the internal combustion engine having the structure in which the fuel is directly injected into the cylinder, the intake port end surface of the cylinder head 1 (the end surface of the intake pipe flange portion 1). ) Is formed on the surface orthogonal to the mounting center line of the fuel injection valve 6, and the fuel supply pipe function is also provided in the downstream joint of the intake pipe 3, so that the flange 3a of the intake pipe 3 6 can be fastened together with the cylinder head 1, the number of bolts for fixing the fuel injection valve 6 can be reduced, and the parts of the fuel piping system can be eliminated. Each of the embodiments has the following effects in addition to the common effects described above. In the first embodiment, the injection valve fixing function can be added to the intake pipe flange portion. The third embodiment also has a sound insulation effect.
【００１３】以上、本発明の実施の形態を図面により詳
述してきたが、具体的な構成はこの実施の形態に限られ
るものではなく、本発明の要旨を逸脱しない範囲におけ
る設計の変更等があっても、本発明に含まれる。Although the preferred embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this preferred embodiment, and a design change or the like may be made without departing from the gist of the present invention. If so, they are included in the present invention.
【００１４】[0014]
【発明の効果】 以上説明してきたように、この発明に
よれば、その構成を筒内に直接燃料を噴射するガソリン
機関に於て、シリンダヘッドの吸気ポート端面を噴射弁
取付中心線と直交する面で形成し、燃料供給配管機能を
吸気管下流の接合部に併せ持たせる構造としたため、吸
気管のフランジ部で噴射弁をシリンダヘッドに共締めで
き、噴射弁固定用のボルト本数が削減でき、且つ燃料配
管系の部品が削滅できると言う効果が得られる。As described above, according to the present invention, in a gasoline engine which directly injects fuel into the cylinder, the intake port end surface of the cylinder head is orthogonal to the injection valve mounting center line. Since it is formed with a surface, and the fuel supply piping function is also added to the joint part downstream of the intake pipe, the injection valve can be fastened together with the cylinder head at the flange part of the intake pipe, and the number of bolts for fixing the injection valve can be reduced. In addition, the effect that the parts of the fuel piping system can be eliminated can be obtained.
【図１】本発明の実施の形態１を示す断面図である。FIG. 1 is a sectional view showing Embodiment 1 of the present invention.
【図２】吸気管フランジの端面図である。FIG. 2 is an end view of an intake pipe flange.
【図３】インテークマニホルドガスケットの端面図であ
るFIG. 3 is an end view of the intake manifold gasket.
【図４】本発明の実施の形態２を示す断面図である。FIG. 4 is a sectional view showing a second embodiment of the present invention.
【図５】本発明の実施の形態３を示す断面図である。FIG. 5 is a sectional view showing a third embodiment of the present invention.
【図６】従来技術を示す断面図である。FIG. 6 is a sectional view showing a conventional technique.
１ シリンダヘッド １ａ 吸気管フランジ ３ 吸気管 ３ａ フランジ部 ４ 燃料通路 ６ 燃料噴射弁 ７ コルゲートワッシャー ８ スリーブ ９ Ｏリング １０ インテークマニホルドガスケット 1 Cylinder Head 1a Intake Pipe Flange 3 Intake Pipe 3a Flange 4 Fuel Passage 6 Fuel Injection Valve 7 Corrugated Washer 8 Sleeve 9 O-ring 10 Intake Manifold Gasket
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｍ 55/02 ３４０ Ｆ０２Ｍ 35/10 １０２Ｂ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location F02M 55/02 340 F02M 35/10 102B
Claims (6)
ン機関において、燃料噴射弁を機関上方からみて吸気ポ
ートの中心線に略平行に配設し、シリンダヘッドの吸気
ポートの上流側端面を前記燃料噴射弁取付時の燃料噴射
弁軸方向の中心線と直交する面で形成すると共に、前記
シリンダヘッドの吸気ポート上流側端面と吸気管との接
合面と同一平面内に前記燃料噴射弁固定用の取付平面を
有し、前記吸気管と燃料噴射弁とを係合させてシリンダ
ヘッドに一体的に取り付け可能となるよう構成し、且
つ、吸気管下流端とシリンダヘッドとの接合部に燃料噴
射弁への燃料供給機能を有することを特徴とする筒内直
噴式ガソリン機関の吸気装置。1. In a direct injection type gasoline engine in which fuel is directly injected into a cylinder, a fuel injection valve is arranged substantially parallel to a center line of an intake port when viewed from above the engine, and an upstream end surface of the intake port of a cylinder head is arranged. The fuel injection valve is formed on a surface orthogonal to the center line in the axial direction of the fuel injection valve when the fuel injection valve is attached, and is fixed in the same plane as the joint surface between the intake port upstream end surface of the cylinder head and the intake pipe. And a fuel injection valve are engaged with each other so as to be integrally attached to the cylinder head, and a fuel is provided at a joint between the intake pipe downstream end and the cylinder head. An intake device for a direct injection gasoline engine, which has a function of supplying fuel to an injection valve.
ン機関において、燃料噴射弁を機関上方からみて吸気ポ
ートの中心線に略平行に配設し、シリンダヘッドの吸気
ポートの上流側端面を前記燃料噴射弁取付時の燃料噴射
弁軸方向の中心線と直交する面で形成すると共に、噴射
弁を固定するブラケット機能と燃料供給配管機能とを吸
気管下流側のシリンダヘッドとの接合部に併せ持たせた
ことを特徴とする前記請求項１記載の筒内直噴式ガソリ
ン機関の吸気装置。2. In a direct injection type gasoline engine in which fuel is directly injected into a cylinder, a fuel injection valve is arranged substantially parallel to a center line of an intake port as viewed from above the engine, and an upstream end surface of the intake port of a cylinder head is arranged. The fuel injection valve is formed on a surface orthogonal to the axial centerline of the fuel injection valve when attached, and has a bracket function for fixing the injection valve and a fuel supply pipe function at a joint portion with a cylinder head on the downstream side of the intake pipe. An intake system for a direct injection gasoline engine according to claim 1, wherein the intake system is also provided.
定用スリーブと吸気管下流端フランジ部との接合部に、
インテークマニホールドガスケットを介装するように配
設し、該インテークマニホールドガスケットを介して、
前記燃料噴射弁を固定する様に構成したことを特徴とす
る前記請求項１または請求項２記載の筒内直噴式ガソリ
ン機関の吸気装置。3. A joint portion between an injection valve fixing sleeve covering the entire fuel injection valve and an intake pipe downstream end flange portion,
Arranged so as to interpose an intake manifold gasket, through the intake manifold gasket,
The intake device for a direct injection gasoline engine according to claim 1 or 2, wherein the fuel injection valve is fixed.
ヘッドとを接合する取付ボルト配置のうち、前記燃料噴
射弁固定のための取付ボルト配置を、各気筒に配設され
た燃料噴射弁の中心点を結んだクランク軸線方向の線上
近傍に設けたことを特徴とする上記請求項１または請求
項２記載の筒内直噴式ガソリン機関の吸気装置。4. A mounting bolt arrangement for fixing the fuel injection valve, among mounting bolt arrangements for joining the intake pipe downstream end flange portion and a cylinder head, to a center of a fuel injection valve arranged in each cylinder. The intake device for a direct injection gasoline engine according to claim 1 or 2, wherein the intake device is provided in the vicinity of a line connecting the points in the crankshaft axis direction.
との接合部に設けられた燃料配管機能であって、燃料配
管用通路を各気筒に配設された噴射弁の中心点を結んだ
クランク軸線方向の線からオフセットさせ、平行に配設
したことを特徴とする上記請求項１または請求項２また
は請求項４記載の筒内直噴式ガソリン機関の吸気装置。5. A crank having a fuel pipe function provided at a joint between the downstream end of the intake pipe and the cylinder head, the fuel pipe passage connecting a center point of an injection valve arranged in each cylinder. The intake device for a direct injection gasoline engine according to claim 1, 2 or 4, wherein the intake device is offset from a line in the axial direction and arranged in parallel.
ン機関において、燃料噴射弁を機関上方からみて吸気ポ
ートの中心線に略平行に配設し、且つ、燃料噴射弁をシ
リンダヘッド内に挿入するように構成すると共に、該シ
リンダヘッドの吸気ポート上流側端面を前記燃料噴射弁
取付時の燃料噴射弁軸方向の中心線と直交する面で形成
し、前記燃料噴射弁を固定するブラケット機能と、燃料
供給配管機能とを吸気管下流側のシリンダヘッドとの接
合部に併せ持ち、且つ、シリンダヘッド内に配設された
前記燃料噴射弁を取り囲む隔壁と、吸気管下流側のシリ
ンダヘッドとの接合部とで燃料噴射弁を密閉保持するこ
とを特徴とする筒内直噴式ガソリン機関の吸気装置。6. In a direct injection gasoline engine in which fuel is directly injected into a cylinder, the fuel injection valve is arranged substantially parallel to the center line of the intake port when viewed from above the engine, and the fuel injection valve is provided inside the cylinder head. A bracket function for fixing the fuel injection valve, which is configured to be inserted and which is formed with a surface orthogonal to an axial centerline of the fuel injection valve when the fuel injection valve is attached, and an intake port upstream end surface of the cylinder head. And a fuel supply piping function at the joint with the cylinder head on the downstream side of the intake pipe, and a partition wall surrounding the fuel injection valve arranged in the cylinder head, and a cylinder head on the downstream side of the intake pipe. An intake system for a direct injection gasoline engine, characterized in that a fuel injection valve is hermetically held at a joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06648696A JP3632286B2 (en) | 1996-03-22 | 1996-03-22 | Intake system for in-cylinder direct injection gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06648696A JP3632286B2 (en) | 1996-03-22 | 1996-03-22 | Intake system for in-cylinder direct injection gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09256928A true JPH09256928A (en) | 1997-09-30 |
| JP3632286B2 JP3632286B2 (en) | 2005-03-23 |
Family
ID=13317180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06648696A Expired - Lifetime JP3632286B2 (en) | 1996-03-22 | 1996-03-22 | Intake system for in-cylinder direct injection gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3632286B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11241660A (en) * | 1998-02-25 | 1999-09-07 | Isuzu Motors Ltd | Injector assembling method for fuel injection system |
| JP2002339815A (en) * | 2001-05-15 | 2002-11-27 | Honda Motor Co Ltd | Intake air surge tank of internal combustion engine |
| DE19920195B4 (en) * | 1999-05-03 | 2007-12-06 | Audi Ag | Air intake system for a multi-cylinder internal combustion engine |
| CN100357589C (en) * | 2002-12-02 | 2007-12-26 | 本田技研工业株式会社 | Fue supply structure for small vehicle engine |
-
1996
- 1996-03-22 JP JP06648696A patent/JP3632286B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11241660A (en) * | 1998-02-25 | 1999-09-07 | Isuzu Motors Ltd | Injector assembling method for fuel injection system |
| DE19920195B4 (en) * | 1999-05-03 | 2007-12-06 | Audi Ag | Air intake system for a multi-cylinder internal combustion engine |
| JP2002339815A (en) * | 2001-05-15 | 2002-11-27 | Honda Motor Co Ltd | Intake air surge tank of internal combustion engine |
| CN100357589C (en) * | 2002-12-02 | 2007-12-26 | 本田技研工业株式会社 | Fue supply structure for small vehicle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3632286B2 (en) | 2005-03-23 |
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