JPH03246320A - Intake air control device for diesel engine - Google Patents

Intake air control device for diesel engine

Info

Publication number
JPH03246320A
JPH03246320A JP2039597A JP3959790A JPH03246320A JP H03246320 A JPH03246320 A JP H03246320A JP 2039597 A JP2039597 A JP 2039597A JP 3959790 A JP3959790 A JP 3959790A JP H03246320 A JPH03246320 A JP H03246320A
Authority
JP
Japan
Prior art keywords
intake
swirl
ports
cylinder
diesel engine
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
Application number
JP2039597A
Other languages
Japanese (ja)
Inventor
Mikimasa Saigou
幹正 西郷
Akira Matsuura
松浦　晃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to JP2039597A priority Critical patent/JPH03246320A/en
Publication of JPH03246320A publication Critical patent/JPH03246320A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • F02B31/042—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors induction channel having a helical shape around the intake valve axis
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1824—Number of cylinders six
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE:To select optimum swirl ratio by forming two intake ports of high and low swirl ports on each cylinder, and providing a distributing valve on the confluent part of respective intake manifolds for respective ports to control flow ratio of air to respective intake manifolds. CONSTITUTION:In the cylinder head of four valve type six cylinder diesel engine, a high swirl intake port 2 and a low swirl intake port 3 are provided on each cylinder, and respective intake ports 2, 3 are connected to respective intake manifolds 4, 5. A distributing valve 7 is arranged on the confluent part 6 of the respective intake manifolds 4, 5, and flow ratio of air flowing from an air cleaner or a turbocharger (not shown in the figure) into both intake manifolds 4, 5 is controlled by rotationally moving the distributing valve 7 around a supporting shaft 8, according to running condition of the engine. Hereby, optimum swirl ratio can be selected according to the running condition of the engine.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は自動車用ディーゼルエンジンにおいて、低速
から高速までの燃焼にマツチした吸気を得るために、ス
ワール比をエンジンの回転に応じて可変とすることがで
きる吸気コントロール装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] This invention is a diesel engine for automobiles, in which the swirl ratio is made variable in accordance with the rotation of the engine in order to obtain intake air that matches combustion from low speed to high speed. This invention relates to an air intake control device that can control air intake.

〔従来の技術〕[Conventional technology]

従来の４弁エンジンの吸気ポートは、高スワールが得ら
れるスワールポートと低スワールのダイレクショナルポ
ートに分かれており。The intake port of a conventional 4-valve engine is divided into a swirl port that provides high swirl and a directional port that provides low swirl.

これらはすべて一体の吸気マニホールドに連結さ九てい
た。These were all connected to a single intake manifold.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで一般に高速では低スワール、低速では高スワー
ルとすることが、混合気形成に有利であることは良（知
られているところであり、上述のようにすべての吸気マ
ニホールドが一体に連結されていると、低速でスワール
小、高速でスワール大となって、低速及び高速の双方ｔ
；おいて最適な混合気が得られにくいということが経験
された。By the way, it is generally known that low swirl at high speeds and high swirl at low speeds is advantageous for mixture formation. , the swirl is small at low speeds, and the swirl is large at high speeds, and the swirl is large at both low speeds and high speeds.
It has been experienced that it is difficult to obtain the optimum air-fuel mixture.

〔′１ＩｌｉｌＩを解決するための手段〕ここにおいて
この発明は、１シリンダ当り２組の吸気ポートを有する
ディーゼルエンジンにおいて、前記各組の吸気ポートを
高スワールポートと低スワールポートとして構成し。[Means for solving '1IliilI] Here, in a diesel engine having two sets of intake ports per cylinder, each set of intake ports is configured as a high swirl port and a low swirl port.

各シリンダのこれら両者ポートにそれぞれ５Ｓ１１の吸
気マニホールドを接続し、高スワールポートへの吸気マ
ニホールドと低スワールポートへの各吸気マニホールド
の合流部に、これら各吸気マニホールドへの空気の流量
比率をコントロールする分配弁を配設することを特徴と
するディーゼルエンジンの吸気コントロール装置を提案
するものである。A 5S11 intake manifold is connected to both ports of each cylinder, and the flow rate ratio of air to each intake manifold is controlled at the confluence of the intake manifold to the high swirl port and the intake manifold to the low swirl port. This invention proposes an air intake control device for a diesel engine characterized by disposing a distribution valve.

〔作用〕[Effect]

前記構成からなるこの発明の装置において、エアクリー
ナ又はターボチャージャから供給される空気は前記合流
部において、分配弁によって、その時々の運転条件に応
じて高スワールポートへの吸気マニホールドと低スワー
ルポートへの吸気マニホールドに、適切な流量比率で分
配されるのである。In the device of the present invention having the above configuration, the air supplied from the air cleaner or the turbocharger is sent to the intake manifold to the high swirl port and to the low swirl port by the distribution valve at the confluence section depending on the operating conditions at the time. It is distributed to the intake manifold at the appropriate flow rate.

【実施例〕【Example〕

次にこの発明を添付図面に示す実施例について説明する
。Next, the present invention will be described with reference to embodiments shown in the accompanying drawings.

先ず第１図ないし第３図に示す第一実施例において、ｌ
は４弁式６気筒ディーゼルエンジンのシリンダヘッドを
示し、各シリンダには高スワールの吸気ポート２と低ス
ワールの吸気ポート３とが備えられており、これら各シ
リンダの吸気ポート２及び吸気ポート３には各別の吸気
マニホールド４及び５を接続させ、これら両吸気マニホ
ールド４及び５の合流部６において、分配す？７を配設
し、この分配弁７を回動させることによって、エアクリ
ーナ又はターボチャージャ（図示せず）から前記両吸気
マニホールド４及び５へ流入する空気の流量比率をコン
トロールするのであって、支軸８の周に回動する前記分
配弁７の作動によるコントロールの状態を第３図によっ
て説明すると、　（ａＨ：よっては中間的なスワールが
得られ、（ｂ）によっては高スワールが。First, in the first embodiment shown in FIGS. 1 to 3, l
shows a cylinder head of a four-valve six-cylinder diesel engine, each cylinder is equipped with a high-swirl intake port 2 and a low-swirl intake port 3, and the intake port 2 and intake port 3 of each cylinder are connects separate intake manifolds 4 and 5, and distributes them at the confluence 6 of both intake manifolds 4 and 5? By rotating this distribution valve 7, the flow rate ratio of air flowing into the intake manifolds 4 and 5 from an air cleaner or a turbocharger (not shown) is controlled. The state of control by the operation of the distribution valve 7, which rotates around the circumference of 8, will be explained with reference to FIG. 3.

（ｃ）によっては低スワールが得られるのである。Low swirl can be obtained depending on (c).

第４図は前記分配弁７の一つの実施形態を示すもので２
分配弁７を支承する支軸８と一体のレバー９をコンピュ
ータ１０によって制御されるアクチュエータ１１によっ
て揺動させることにより、前記分配弁７を回動させ、高
スワールポートへの吸気マニホールド４と低スワールポ
ートへの吸気マニホールド５への空気の流量比率をコン
トロールするものである。FIG. 4 shows one embodiment of the distribution valve 7.
By swinging a lever 9 integrated with a support shaft 8 that supports the distribution valve 7 by an actuator 11 controlled by a computer 10, the distribution valve 7 is rotated, and the intake manifold 4 to the high swirl port and the low swirl It controls the flow rate ratio of air to the port and to the intake manifold 5.

図示のものはアクチュエータ１１によってレバー９を介
して分配弁７を作動させているが。In the illustrated embodiment, the distribution valve 7 is actuated by the actuator 11 via the lever 9.

回転センサによって作動するＯＮ　−ＯＦＦ切換式のも
のでもよく、また低回転から高回転まで連続的にレバー
を動かすステップモータ式のものをコンピュータで作動
させるものでもよい。It may be an ON-OFF switching type actuated by a rotation sensor, or it may be a step motor type actuated by a computer that moves a lever continuously from low rotation to high rotation.

なお、分配弁７の角度とエンジンの回転数との関係とし
ては、第５図の（ａ）に示すように階段的な態様や、（
ｂ）に示すような曲線状の態様のいずれかの方式が得ら
れるものである。Note that the relationship between the angle of the distribution valve 7 and the engine rotational speed may be a stepwise pattern as shown in FIG. 5(a), or a (
Any of the curved forms shown in b) can be obtained.

〔発明の効果〕〔Effect of the invention〕

この発明の上述の構造によれば、自動車の走行速度の変
化に伴なうエンジンの回転数の増減に応じて、その時々
の）！転状態に最適なスワール比を自動的に選択できる
ので、この種エンジンにおいて２要求される回転、負荷
の広い使用範囲に対応して燃焼改善に寄与するところ多
大なものがある。According to the above-described structure of the present invention, the rotational speed of the engine increases or decreases depending on the change in the traveling speed of the vehicle (from time to time)! Since it is possible to automatically select the optimum swirl ratio for the engine speed, this greatly contributes to improved combustion in response to the wide range of rotations and loads required for this type of engine.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の一実施例の構成図、第２図はその一
部分の断面図、第３図（ａ）（ｂ）（ｃ）は分配弁の切
換態様を示す説明図、第４図は第二実施例の構成図で、
第５図（ａ）（ｂ）は分配弁の角度とエンジンの回転数
との関係を示すグラフである。 なお図において、 ２　　　高スワールの吸気ポート ３　　　低スワールの吸気ポート ４　　２への吸気マニホールド ５　　３への吸気マニホールド ６ 合流部 分配部 である。 第 ５：３への吸気マニホ ６：合流部 ７：分配弁 ルド 第 図 第 図 第 図 第 図 （ａ） （ｂ） ｒ、ｐ、ｍ ｒ、ｐ、ｍFig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is a sectional view of a portion thereof, Figs. is a configuration diagram of the second embodiment,
FIGS. 5(a) and 5(b) are graphs showing the relationship between the angle of the distribution valve and the rotational speed of the engine. In the figure, 2 high swirl intake port 3 low swirl intake port 4 intake manifold 5 to 2 intake manifold 6 to 3 merging portion. 5: Intake manifold to 3: Merging section 7: Distribution valve L diagram diagram diagram diagram diagram diagram (a) (b) r, p, m r, p, m

Claims (1)

【特許請求の範囲】[Claims] （１）１シリンダ当り２組の吸気ポートを有するディー
ゼルエンジンにおいて、前記各組の吸気ポートを高スワ
ールポートと低スワールポートとして構成し、各シリン
ダのこれら両者ポートにそれぞれ別の吸気マニホールド
を接続し、高スワールポートへの吸気マニホールドと低
スワールポートへの各吸気マニホールドの合流部に、こ
れら各吸気マニホールドへの空気の流量比率をコントロ
ールする分配弁を配設することを特徴とするディーゼル
エンジンの吸気コントロール装置。(1) In a diesel engine having two sets of intake ports per cylinder, each set of intake ports is configured as a high swirl port and a low swirl port, and separate intake manifolds are connected to these two ports of each cylinder. , an intake manifold for a diesel engine characterized in that a distribution valve for controlling the flow rate ratio of air to each intake manifold is disposed at the confluence of the intake manifold to a high swirl port and each intake manifold to a low swirl port. control device.
JP2039597A 1990-02-22 1990-02-22 Intake air control device for diesel engine Pending JPH03246320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2039597A JPH03246320A (en) 1990-02-22 1990-02-22 Intake air control device for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2039597A JPH03246320A (en) 1990-02-22 1990-02-22 Intake air control device for diesel engine

Publications (1)

Publication Number Publication Date
JPH03246320A true JPH03246320A (en) 1991-11-01

Family

ID=12557522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2039597A Pending JPH03246320A (en) 1990-02-22 1990-02-22 Intake air control device for diesel engine

Country Status (1)

Country Link
JP (1) JPH03246320A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467454B1 (en) * 1999-07-09 2002-10-22 Daimlerchrysler Ag Spark-ignition internal combustion engine
US7051702B2 (en) 2003-04-03 2006-05-30 Nissan Motor Co., Ltd. Intake apparatus for internal combustion engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788217A (en) * 1980-11-20 1982-06-02 Yanmar Diesel Engine Co Ltd Swirl adjusting device of internal combustion engine
JPH0218621B2 (en) * 1982-12-28 1990-04-26 Tokyo Shibaura Electric Co

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788217A (en) * 1980-11-20 1982-06-02 Yanmar Diesel Engine Co Ltd Swirl adjusting device of internal combustion engine
JPH0218621B2 (en) * 1982-12-28 1990-04-26 Tokyo Shibaura Electric Co

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467454B1 (en) * 1999-07-09 2002-10-22 Daimlerchrysler Ag Spark-ignition internal combustion engine
US7051702B2 (en) 2003-04-03 2006-05-30 Nissan Motor Co., Ltd. Intake apparatus for internal combustion engine

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