JP3333799B2 - Diesel engine with supercharger - Google Patents

Diesel engine with supercharger

Info

Publication number
JP3333799B2
JP3333799B2 JP12121495A JP12121495A JP3333799B2 JP 3333799 B2 JP3333799 B2 JP 3333799B2 JP 12121495 A JP12121495 A JP 12121495A JP 12121495 A JP12121495 A JP 12121495A JP 3333799 B2 JP3333799 B2 JP 3333799B2
Authority
JP
Japan
Prior art keywords
fuel
spring
stopper
case
boucon
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
Application number
JP12121495A
Other languages
Japanese (ja)
Other versions
JPH08312381A (en
Inventor
潔 畑浦
学 宮▲崎▼
英男 長谷川
博 三雲
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP12121495A priority Critical patent/JP3333799B2/en
Publication of JPH08312381A publication Critical patent/JPH08312381A/en
Application granted granted Critical
Publication of JP3333799B2 publication Critical patent/JP3333799B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、過給機付きディーゼル
エンジンに関し、詳しくは、ユーザー等による不正な改
造によって燃料噴射量の制限機能が消失してしまうのを
防止できるものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diesel engine with a supercharger, and more particularly to a diesel engine capable of preventing a function of limiting a fuel injection amount from being lost due to an unauthorized modification by a user or the like.

【０００２】[0002]

【従来技術】過給機付きディーゼルエンジンの従来技術
として図４に示すものがある。これは、本発明と同様、
次のような基本構造を備えている。2. Description of the Related Art FIG. 4 shows a prior art of a turbocharged diesel engine. This is similar to the present invention.
It has the following basic structure.

【０００３】すなわち、過給機１０１を備えた吸気経路
１０２にアクチュエータ１０３を接続し、吸気経路１０
２からのブースト圧１０４とブーコンスプリング１０６
のバネ力１０８との不釣り合い力でアクチュエータ１０
３の出力軸１０５を作動させるようにし、この出力軸１
０５に燃料制限用ストッパー１０７を連携させ、出力軸
１０５の作動姿勢に対応して燃料制限用ストッパー１０
７の制限姿勢を規定し、吸気経路１０２からのブースト
圧１０４が所定値を越えるまでは、燃料制限用ストッパ
ー１０７を最大制限姿勢１０９に規定できるようにし
て、燃料噴射ポンプ１１０からの燃料噴射量を制限する
ように構成してある。[0003] That is, an actuator 103 is connected to an intake path 102 provided with a supercharger 101, and an intake path 10 is provided.
2 boost pressure 104 and boucon spring 106
Of the actuator 10 due to an unbalanced force with the spring force 108 of the actuator 10
The third output shaft 105 is operated.
The fuel limiting stopper 107 is linked with the fuel limiting stopper 10 in accordance with the operating posture of the output shaft 105.
7 until the boost pressure 104 from the intake passage 102 exceeds a predetermined value, the fuel restricting stopper 107 can be regulated to the maximum restricting position 109 so that the fuel injection amount from the fuel injection pump 110 can be adjusted. Is restricted.

【０００４】この種のエンジンでは、加速操作時に生じ
る過給圧の上昇遅れ期間中、燃料制限用ストッパー１０
７を最大制限姿勢１０９にして、燃料噴射ポンプ１１０
からの燃料噴射量を制限し、燃料の過剰供給によるスモ
ーク等の発生を抑制する。[0004] In this type of engine, the fuel limiting stopper 10 is used during a period in which the boost pressure is delayed during acceleration operation.
7 to the maximum restriction position 109, and the fuel injection pump 110
The amount of fuel injected from the fuel is restricted, and the generation of smoke and the like due to excessive supply of fuel is suppressed.

【０００５】この従来技術では、噴射ポンプケース１１
６にブーコンケース１１７を着脱自在に取り付け、この
ブーコンケース１１７に燃料制限用ストッパー１０７と
アクチュエータ１０３とブーコンスプリング１０６とを
一体に組み込んである。In this prior art, the injection pump case 11
6, a boocon case 117 is detachably attached, and the fuel limiting stopper 107, the actuator 103, and the boucon spring 106 are integrated into the boucon case 117.

【０００６】[0006]

【発明が解決しようとする課題】上記従来技術では、ユ
ーザー等がエンジン出力を高める等の目的で不正にブー
コンケース１１７を取り外した場合、燃料制限用ストッ
パー１０７がブーコンケース１１７ごと除去されてしま
うので、燃料噴射量の制限機能が完全に消失する。この
ため、加速操作時に生じる過給圧の上昇遅れ期間中、燃
料の過剰供給によってスモーク等が大量に発生し、排気
ガス規制が破られるおそれがある。In the above prior art, when the user or the like illegally removes the boocon case 117 for the purpose of increasing the engine output or the like, the fuel limiting stopper 107 is removed together with the boocon case 117. Thus, the function of limiting the fuel injection amount is completely lost. For this reason, during a period in which the boost pressure is delayed during the acceleration operation, a large amount of smoke or the like is generated due to the excessive supply of fuel, and the exhaust gas regulation may be broken.

【０００７】本発明の課題は、ユーザー等による不正な
改造によって燃料噴射量の制限機能が消失してしまうの
を防止できる、過給機付きディーゼルエンジンを提供す
ることにある。An object of the present invention is to provide a diesel engine with a supercharger, which can prevent the function of limiting the fuel injection amount from being lost due to unauthorized modification by a user or the like.

【０００８】[0008]

【課題を解決するための手段】[Means for Solving the Problems]

（第１発明）第１発明は、図１に示すように、過給機１
を備えた吸気経路２にアクチュエータ３を接続し、吸気
経路２からのブースト圧４とブーコンスプリング６のバ
ネ力８との不釣り合い力でアクチュエータ３の出力軸５
を作動させるようにし、この出力軸５に燃料制限用スト
ッパー７を連携させ、出力軸５の作動姿勢に対応して燃
料制限用ストッパー７の制限姿勢を規定し、吸気経路２
からのブースト圧４が所定値を越えるまでは、燃料制限
用ストッパー７を最大制限姿勢９に規定できるようにし
て、燃料噴射ポンプ１０からの燃料噴射量を制限するよ
うに構成した、過給機付きディーゼルエンジンにおい
て、次のようにしたことを特徴とする。(First Invention) As shown in FIG.
The actuator 3 is connected to the intake path 2 provided with an actuator, and an output shaft 5 of the actuator 3 is imbalanced by a boost pressure 4 from the intake path 2 and a spring force 8 of the boucon spring 6.
The output shaft 5 is linked with a fuel limiting stopper 7, and the limiting position of the fuel limiting stopper 7 is defined in accordance with the operating position of the output shaft 5.
A configuration in which the fuel restricting stopper 7 can be defined in the maximum restricting posture 9 until the boost pressure 4 from the fuel pump exceeds a predetermined value, thereby restricting the fuel injection amount from the fuel injection pump 10. A diesel engine with the above features is as follows.

【０００９】すなわち、図１に示すように、燃料制限用
ストッパー７とブーコンスプリング６とをガバナケース
１１内に配置し、ガバナケース１１のケース壁１２にア
クチュエータ３を取り付け、ガバナケース１１のケース
壁１２からアクチュエータ３を取り外した際に、燃料制
限用ストッパー７がブーコンスプリング６のバネ力８で
最大制限姿勢９を維持したままガバナケース１１内に残
るように構成したことを特徴とする。That is, as shown in FIG. 1, a fuel limiting stopper 7 and a boucon spring 6 are arranged in a governor case 11, and an actuator 3 is mounted on a case wall 12 of the governor case 11. When the actuator 3 is removed from the stopper 12, the fuel restricting stopper 7 remains in the governor case 11 while maintaining the maximum restricting posture 9 by the spring force 8 of the boucon spring 6.

【００１０】（第２発明）第２発明は、図１に示すよう
に、第１発明の過給機付きディーゼルエンジンにおい
て、ガバナケース１１内で燃料制限用ストッパー７とス
テー１５とを揺動自在に枢支し、この燃料制限用ストッ
パー７とステー１５の各揺動端部間にブーコンスプリン
グ６を介設し、ガバナケース１１のケース壁１２にスト
ッパー姿勢設定ボルト１３とバネ力設定ボルト１４とを
設け、ブーコンスプリング６で付勢されたステー１５を
バネ力設定ボルト１４の先端で受け止めるとともに、ブ
ーコンスプリング６で付勢された燃料制限用ストッパー
７をストッパー姿勢設定ボルト１３の先端で受け止める
ように構成したことを特徴とする。(Second Invention) In a second invention, as shown in FIG. 1, in the diesel engine with a supercharger of the first invention, the fuel limiting stopper 7 and the stay 15 are swingable in the governor case 11. A boucon spring 6 is interposed between the fuel limiting stopper 7 and each swinging end of the stay 15, and a stopper attitude setting bolt 13 and a spring force setting bolt 14 are provided on the case wall 12 of the governor case 11. So that the stay 15 urged by the boucon spring 6 is received by the tip of the spring force setting bolt 14 and the fuel limiting stopper 7 urged by the boucon spring 6 is received by the tip of the stopper attitude setting bolt 13. It is characterized by comprising.

【００１１】[0011]

【発明の作用及び効果】Actions and effects of the present invention

（第１発明）第１発明によれば、次の作用効果を奏す
る（図１参照）。 ユーザー等がエンジン出力を高める等の目的で、不正
にアクチュエータ３を取り外した場合でも、燃料制限用
ストッパー７がブーコンスプリング６のバネ力８で最大
制限姿勢９を維持したままガバナケース１１内に残るた
め、燃料噴射量の制限機能が保持される。このため、加
速操作時に生じる過給圧の上昇遅れ期間中、燃料の過剰
供給によるスモーク等の発生が防止され、排気ガス規制
を破られるおそれがない。(First Invention) According to the first invention, the following operation and effect can be obtained (see FIG. 1). Even if the user or the like illegally removes the actuator 3 for the purpose of, for example, increasing the engine output, the fuel limiting stopper 7 remains in the governor case 11 while maintaining the maximum limiting posture 9 by the spring force 8 of the boocon spring 6. Therefore, the function of limiting the fuel injection amount is maintained. For this reason, during a period in which the boost pressure is delayed during the acceleration operation, generation of smoke or the like due to excessive supply of fuel is prevented, and there is no possibility that the exhaust gas regulation will be violated.

【００１２】（第２発明）第２発明によれば、上記作用
効果に加え、次の作用効果を奏する（図１参照）。 ストッパー姿勢設定ボルト１３の螺動調節によって燃
料制限用ストッパー７の最大制限姿勢９を設定し、これ
に基づいて最大制限値を設定できる。また、バネ力設定
ボルト１４の螺動調節によってブーコンスプリング６の
初期バネ力を設定し、これに基づいて最大制限姿勢９を
解除できる解除ブースト圧を設定できる。このため、最
大制限値と解除ブースト圧の設定値とを任意に組み合わ
せることによって、きめ細かな燃料制限の設定が可能と
なる。(Second Invention) According to the second invention, in addition to the above-mentioned functions and effects, the following functions and effects are obtained (see FIG. 1). The maximum limit position 9 of the fuel limiting stopper 7 is set by adjusting the screwing of the stopper position setting bolt 13, and the maximum limit value can be set based on this. Further, the initial spring force of the boucon spring 6 is set by adjusting the screwing of the spring force setting bolt 14, and based on this, the release boost pressure that can release the maximum restriction posture 9 can be set. Therefore, by arbitrarily combining the maximum limit value and the set value of the release boost pressure, fine setting of the fuel limit can be performed.

【００１３】[0013]

【実施例】本発明の実施例を図面に基づいて説明する。
図１〜図３は本発明の実施例を説明する図で、この実施
例では縦形多気筒の過給機付きディーゼルエンジンを用
いている。このエンジンの構成は次の通りである。すな
わち、図３に示すように、シリンダブロック１８の上部
にシリンダヘッド１９を組み付け、シリンダブロック１
８の前部に調時伝動ギヤケース２０を取り付け、この調
時伝動ギヤケース２０の横端部をシリンダブロック１８
の横側面よりも横側に張り出し、この張り出し部２１の
後部に燃料噴射ポンプ１０を収容した噴射ポンプケース
１６を取り付け、この噴射ポンプケース１６の後部にガ
バナケース１１を取り付けてある。An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 to FIG. 3 are views for explaining an embodiment of the present invention. In this embodiment, a vertical multi-cylinder supercharged diesel engine is used. The structure of this engine is as follows. That is, as shown in FIG. 3, the cylinder head 19 is mounted on the cylinder block 18 and the cylinder block 1
A timing transmission gear case 20 is attached to a front portion of the transmission block 8, and a lateral end of the timing transmission gear case 20 is attached to the cylinder block 18.
The injection pump case 16 accommodating the fuel injection pump 10 is attached to the rear of the overhang 21, and the governor case 11 is attached to the rear of the injection pump case 16.

【００１４】図２に示すように、ガバナケース１１内に
はメカニカルガバナを収容してある。メカニカルガバナ
の構成は次の通りである。すなわち、ガバナケース１１
内にガバナレバー枢軸２２を架設し、このカバナレバー
枢軸２２にスプリング力入力レバー２３とガバナ力入力
レバー２４とを揺動自在に枢支し、ガバナ力入力レバー
２４に連結ロッド２５を介して燃料噴射ポンプ１０の燃
料調量ラック２６を連動連結し、スプリング力入力レバ
ー２３をガバナスプリング２７を介して調速レバー２８
に連動連結し、ガバナ力入力レバー２４をガバナウェイ
ト２９に連携させてある。As shown in FIG. 2, a governor case 11 houses a mechanical governor. The structure of the mechanical governor is as follows. That is, the governor case 11
A governor lever pivot 22 is erected therein, and a spring force input lever 23 and a governor force input lever 24 are swingably supported on the governor lever pivot 22 via a connecting rod 25 to the fuel injection pump. 10 are connected in tandem with the fuel adjustment rack 26, and the spring force input lever 23 is connected to the speed adjustment lever 28 via the governor spring 27.
And the governor force input lever 24 is linked to a governor weight 29.

【００１５】そして、ガバナスプリング２７のスプリン
グ力３０とガバナウェイト２９で発生するガバナ力３１
とで、スプリング力入力レバー２３とガバナ力入力レバ
ー２４とを一体的に密着させるとともに、スプリング力
３０とガバナ力３１との不釣り合い力で、密着した両レ
バー２３・２４を揺動させて、燃料噴射ポンプ１０の燃
料調量ラック２６を調量移動させるようにしてある。The governor spring 27 has a spring force 30 and a governor weight 29 generates a governor force 31.
With this, the spring force input lever 23 and the governor force input lever 24 are integrally brought into close contact with each other, and the two levers 23 and 24 that are in close contact with each other are rocked by the unbalance force of the spring force 30 and the governor force 31, The fuel metering rack 26 of the fuel injection pump 10 is metered and moved.

【００１６】また、図１に示すように、ガバナケース１
１にはブーストコンペンセータを取り付けており、その
構成は次のようになっている。すなわち、過給機１を備
えた吸気経路２にアクチュエータ３を接続し、吸気経路
２からのブースト圧４とブーコンスプリング６のバネ力
８との不釣り合い力でアクチュエータ３の出力軸５を作
動させるようにし、この出力軸５に燃料制限用ストッパ
ー７を連携させ、出力軸５の作動姿勢に対応して燃料制
限用ストッパー７の制限姿勢を規定し、吸気経路２から
のブースト圧４が所定値を越えるまでは、燃料制限用ス
トッパー７を最大制限姿勢９に規定できるようにして、
燃料噴射ポンプ１０からの燃料噴射量を制限するように
構成してある。Also, as shown in FIG.
1 is equipped with a boost compensator, and its configuration is as follows. That is, the actuator 3 is connected to the intake path 2 provided with the supercharger 1, and the output shaft 5 of the actuator 3 is operated by the unbalance force between the boost pressure 4 from the intake path 2 and the spring force 8 of the boocon spring 6. In this way, a fuel restricting stopper 7 is linked to the output shaft 5 to define the restricting position of the fuel restricting stopper 7 in accordance with the operating position of the output shaft 5, and the boost pressure 4 from the intake passage 2 is set to a predetermined value. Until the limit is exceeded, the fuel-limiting stopper 7 can be defined in the maximum restricting posture 9,
The configuration is such that the amount of fuel injected from the fuel injection pump 10 is limited.

【００１７】このような構成によれば、加速操作時に生
じる過給圧の上昇遅れ期間中は、燃料制限用ストッパー
７を最大制限姿勢９にして、燃料噴射ポンプ１０からの
燃料噴射量を制限し、燃料の過剰供給によるスモーク等
の発生を抑制できる。According to such a configuration, during the boost delay of the boost pressure occurring during the acceleration operation, the fuel limiting stopper 7 is set to the maximum limiting posture 9 to limit the fuel injection amount from the fuel injection pump 10. In addition, generation of smoke and the like due to excessive supply of fuel can be suppressed.

【００１８】この実施例では、ユーザー等による不正な
改造によって燃料噴射量の制限機能が消失してしまうの
を防止するため、次のような構成を採用した。すなわ
ち、図１に示すように、燃料制限用ストッパー７とブー
コンスプリング６とをガバナケース１１内に配置し、ガ
バナケース１１のケース壁１２にアクチュエータ３を取
り付け、ガバナケース１１のケース壁１２からアクチュ
エータ３を取り外した際に、燃料制限用ストッパー７が
ブーコンスプリング６のバネ力８で最大制限姿勢９を維
持したままガバナケース１１内に残るように構成した。In this embodiment, the following configuration is employed in order to prevent the function of limiting the fuel injection amount from being lost due to unauthorized modification by a user or the like. That is, as shown in FIG. 1, the fuel limiting stopper 7 and the boucon spring 6 are arranged in the governor case 11, the actuator 3 is attached to the case wall 12 of the governor case 11, and the actuator 3 is moved from the case wall 12 of the governor case 11. The fuel restricting stopper 7 remains in the governor case 11 while maintaining the maximum restricting posture 9 by the spring force 8 of the boucon spring 6 when the 3 is removed.

【００１９】このような構成によれば、ユーザー等がエ
ンジン出力を高める等の目的で、不正にアクチュエータ
３を取り外した場合でも、燃料制限用ストッパー７がブ
ーコンスプリング６のバネ力８で最大制限姿勢９を維持
したままガバナケース１１内に残るため、燃料噴射量の
制限機能が保持される。このため、加速操作時に生じる
過給圧の上昇遅れ期間中、燃料の過剰供給によるスモー
ク等の発生が防止され、排気ガス規制を破られるおそれ
がない。According to such a configuration, even when the actuator 3 is illegally removed by the user or the like for the purpose of increasing the engine output or the like, the fuel limiting stopper 7 is moved to the maximum limiting position by the spring force 8 of the boocon spring 6. 9 remains in the governor case 11 while maintaining the fuel injection amount. For this reason, during a period in which the boost pressure is delayed during the acceleration operation, generation of smoke or the like due to excessive supply of fuel is prevented, and there is no possibility that the exhaust gas regulation will be violated.

【００２０】アクチュエータ３は、板金製のアクチュエ
ータケース３２内に吸気経路２に連通させたブースト圧
導入室３３を設け、このブースト圧導入室３３にダイヤ
フラム３４を臨ませ、このダイヤフラム３４に出力軸５
を取り付け、この出力軸５の先端部をアクチュエータケ
ース３２外に突出させて構成してある。The actuator 3 is provided with a boost pressure introducing chamber 33 communicating with the intake passage 2 in an actuator case 32 made of sheet metal. A diaphragm 34 faces the boost pressure introducing chamber 33, and the output shaft 5 is connected to the diaphragm 34.
And the tip of the output shaft 5 is projected outside the actuator case 32.

【００２１】このアクチュエータ３は、ガバナケース１
１のケース壁１２の取り付け孔４２にネジ込んで固定
し、出力軸３５の先端を燃料制限用ストッパー７に接当
させてある。ブースト圧導入室３３には付勢スプリング
３６を収容し、その付勢力で出力軸５の先端が燃料制限
用ストッパー７に軽く密着するようにしてある。燃料制
限用ストッパー７は燃料増量方向に揺動するガバナ力入
力レバー２４を受け止めることにより、燃料噴射量を制
限する。The actuator 3 includes a governor case 1
The front end of the output shaft 35 is brought into contact with the fuel limiting stopper 7 by screwing it into the mounting hole 42 of the case wall 12. The boost pressure introduction chamber 33 accommodates a biasing spring 36, and the tip of the output shaft 5 is lightly brought into close contact with the fuel limiting stopper 7 by the biasing force. The fuel limiting stopper 7 limits the fuel injection amount by receiving the governor force input lever 24 that swings in the fuel increasing direction.

【００２２】また、この実施例では、ガバナケース１１
内で燃料制限用ストッパー７とステー１５とを揺動自在
に枢支し、この燃料制限用ストッパー７とステー１５の
各揺動端部間にブーコンスプリング６を介設し、ガバナ
ケース１１のケース壁１２にストッパー姿勢設定ボルト
１３とバネ力設定ボルト１４とを設け、ブーコンスプリ
ング６で付勢されたステー１５をバネ力設定ボルト１４
の先端で受け止めるとともに、ブーコンスプリング６で
付勢された燃料制限用ストッパー７をストッパー姿勢設
定ボルト１３の先端で受け止めるように構成してある。In this embodiment, the governor case 11
The fuel limiting stopper 7 and the stay 15 are pivotably supported in the inside thereof, and a boocon spring 6 is interposed between each of the fuel limiting stopper 7 and each of the swinging ends of the stay 15. A stopper attitude setting bolt 13 and a spring force setting bolt 14 are provided on the wall 12, and the stay 15 urged by the boucon spring 6 is moved to the spring force setting bolt 14.
And the fuel limiting stopper 7 urged by the boucon spring 6 is received by the tip of the stopper position setting bolt 13.

【００２３】このような構成によれば、ストッパー姿勢
設定ボルト１３の螺動調節によって燃料制限用ストッパ
ー７の最大制限姿勢９を設定し、これに基づいて最大制
限値を設定できる。また、バネ力設定ボルト１４の螺動
調節によってブーコンスプリング６の初期バネ力を設定
し、これに基づいて最大制限姿勢９を解除できる解除ブ
ースト圧を設定できる。このため、最大制限値と解除ブ
ースト圧の設定値とを任意に組み合わせることによっ
て、きめ細かな燃料制限の設定が可能となる。燃料制限
用ストッパー７と揺動ステー１５とは枢軸４１で揺動自
在に枢支してある。According to such a configuration, the maximum limiting attitude 9 of the fuel limiting stopper 7 can be set by adjusting the screwing of the stopper attitude setting bolt 13, and the maximum limiting value can be set based on this. Further, the initial spring force of the boucon spring 6 is set by adjusting the screwing of the spring force setting bolt 14, and based on this, the release boost pressure that can release the maximum restriction posture 9 can be set. Therefore, by arbitrarily combining the maximum limit value and the set value of the release boost pressure, fine setting of the fuel limit can be performed. The fuel limiting stopper 7 and the swing stay 15 are pivotably supported by a pivot 41.

【００２４】この実施例では、図２に示すように、ガバ
ナケース１１のケース壁１２に燃料制限ボルト３７とト
ルクアップ量設定ボルト３８とを設け、燃料制限ボルト
３７の螺動調節によって燃料調量ラック２６の全負荷位
置を設定できるようにしてある。また、トルクアップ量
設定ボルト３８の螺動調節によって過負荷時のトルクア
ップ量を設定できるようにしてある。In this embodiment, as shown in FIG. 2, a fuel limiting bolt 37 and a torque-up amount setting bolt 38 are provided on the case wall 12 of the governor case 11, and the fuel adjustment is performed by adjusting the screwing of the fuel limiting bolt 37. The full load position of the rack 26 can be set. The amount of torque increase at the time of overload can be set by adjusting the screwing of the torque increase amount setting bolt 38.

【００２５】そして、図１及び図２に示すように、スト
ッパー姿勢設定ボルト１３、バネ力設定ボルト１４、燃
料制限ボルト３７、トルクアップ量設定ボルト３８は、
いずれも、ガバナケース１１のケース壁１２にあけたボ
ルト差し込み孔３９からガバナケース１１内に差し込ん
である。このため、エンジンを実際に回転させ、エンジ
ン出力や排気ガス特性を観察しながら、ガバナケース１
１外からこれらボルトによる調節を行うことができる。
また、ストッパー姿勢設定ボルト１３、バネ力設定ボル
ト１４がアクチュエータ３に組み込まれていないため、
アクチュエータ３がコンパクトになる。As shown in FIGS. 1 and 2, the stopper attitude setting bolt 13, the spring force setting bolt 14, the fuel limiting bolt 37, and the torque increasing amount setting bolt 38
Each of them is inserted into the governor case 11 through a bolt insertion hole 39 formed in the case wall 12 of the governor case 11. For this reason, while actually rotating the engine and observing the engine output and exhaust gas characteristics, the governor case 1
The adjustment by these bolts can be performed from outside.
Further, since the stopper posture setting bolt 13 and the spring force setting bolt 14 are not incorporated in the actuator 3,
The actuator 3 becomes compact.

【００２６】また、これらボルトの基端部はいずれもボ
ルト差し込み孔３９内に侵入させ、ボルト差し込み孔３
９にその外側から鋼球４０を打ち込めるようにしてあ
る。このため、メーカー等がこれらボルトを調節した
後、鋼球４０を打ち込んでこれらを封緘して出荷する
と、ユーザー等による不正な調整を防止できる。The base ends of these bolts are all inserted into the bolt insertion holes 39, and the bolt insertion holes 3
The steel ball 40 can be driven from the outside at 9. For this reason, if a manufacturer or the like adjusts these bolts, drives in the steel balls 40, seals them, and ships them, unauthorized adjustment by the user or the like can be prevented.

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

【図１】本発明の実施例に係るエンジンのブーストコン
ペンセータを説明する図で、図１（Ａ）はガバナケース
周辺の縦断面図、図１（Ｂ）は図１（Ａ）のＢ矢視図で
ある。FIG. 1 is a view for explaining a boost compensator of an engine according to an embodiment of the present invention. FIG. 1 (A) is a longitudinal sectional view around a governor case, and FIG. 1 (B) is a view on arrow B of FIG. 1 (A). FIG.

【図２】本発明の実施例に係るエンジンのメカニカルガ
バナを説明するガバナケース周辺の縦断面図である。FIG. 2 is a longitudinal sectional view illustrating a governor case and its surroundings for explaining a mechanical governor of the engine according to the embodiment of the present invention.

【図３】本発明の実施例に係るエンジンの模式平面図で
ある。FIG. 3 is a schematic plan view of the engine according to the embodiment of the present invention.

【図４】従来技術に係るエンジンの図１（Ａ）相当図で
ある。FIG. 4 is a diagram corresponding to FIG. 1A of an engine according to the related art.

【符号の説明】[Explanation of symbols]

１…過給機、２…吸気経路、３…アクチュエータ、４…
ブースト圧、５…出力軸、６…ブーコンスプリング、７
…燃料制限用ストッパー、８…バネ力、９…最大制限姿
勢、１０…燃料噴射ポンプ、１１…ガバナケース、１２
…ケース壁、１３…ストッパー姿勢設定ボルト、１４…
バネ力設定ボルト、１５…ステー。DESCRIPTION OF SYMBOLS 1 ... Supercharger, 2 ... Intake path, 3 ... Actuator, 4 ...
Boost pressure, 5 ... Output shaft, 6 ... Boucon spring, 7
... Stopper for fuel restriction, 8 ... Spring force, 9 ... Maximum restriction posture, 10 ... Fuel injection pump, 11 ... Governor case, 12
... case wall, 13 ... stopper position setting bolt, 14 ...
Spring force setting bolt, 15 ... stay.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 三雲 博 大阪府堺市石津北町64 株式会社クボタ 堺製造所内 審査官 亀丸 広司 (56)参考文献 特開 平３−33436（ＪＰ，Ａ) 特開 昭58−41228（ＪＰ，Ａ) 特開 昭51−126424（ＪＰ，Ａ) 実開 昭55−67330（ＪＰ，Ｕ) 実公 昭35−10524（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F02D 1/02 - 1/04 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hiroshi Mikumo 64 Ishizukita-cho, Sakai-shi, Osaka Investigator in the Kubota Sakai Works Koji Kamemaru (56) References JP-A-3-33436 (JP, A) JP JP-A-58-41228 (JP, A) JP-A-51-126424 (JP, A) JP-A-55-67330 (JP, U) JP-A-35-10524 (JP, Y1) (58) Fields investigated (Int) .Cl. 7 , DB name) F02D 1/02-1/04

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 過給機(１)を備えた吸気経路(２)にアク
チュエータ(３)を接続し、吸気経路(２)からのブースト
圧(４)とブーコンスプリング(６)のバネ力(８)との不釣
り合い力でアクチュエータ(３)の出力軸(５)を作動させ
るようにし、この出力軸(５)に燃料制限用ストッパー
(７)を連携させ、出力軸(５)の作動姿勢に対応して燃料
制限用ストッパー(７)の制限姿勢を規定し、吸気経路
(２)からのブースト圧(４)が所定値を越えるまでは、燃
料制限用ストッパー(７)を最大制限姿勢(９)に規定でき
るようにして、燃料噴射ポンプ(１０)からの燃料噴射量
を制限するように構成した、過給機付きディーゼルエン
ジンにおいて、 燃料制限用ストッパー(７)とブーコンスプリング(６)と
をガバナケース(１１)内に配置し、ガバナケース(１１)
のケース壁(１２)にアクチュエータ(３)を取り付け、ガ
バナケース(１１)のケース壁(１２)からアクチュエータ
(３)を取り外した際に、燃料制限用ストッパー(７)がブ
ーコンスプリング(６)のバネ力(８)で最大制限姿勢(９)
を維持したままガバナケース(１１)内に残るように構成
した、ことを特徴とする過給機付きディーゼルエンジ
ン。An actuator (3) is connected to an intake path (2) provided with a supercharger (1), and a boost pressure (4) from the intake path (2) and a spring force (6) of a boucon spring (6) are provided. The output shaft (5) of the actuator (3) is actuated by a force unbalanced with the output shaft (8).
(7) is linked to define the restricting position of the fuel restricting stopper (7) corresponding to the operating position of the output shaft (5),
Until the boost pressure (4) from (2) exceeds a predetermined value, the fuel restricting stopper (7) can be defined in the maximum restricting posture (9) so that the fuel injection amount from the fuel injection pump (10) can be adjusted. In a diesel engine with a supercharger, which is configured so as to limit the fuel pressure, a fuel limiting stopper (7) and a boucon spring (6) are arranged in a governor case (11), and a governor case (11)
The actuator (3) is attached to the case wall (12) of the governor case, and the actuator is mounted on the case wall (12) of the governor case (11).
When (3) is removed, the fuel limiting stopper (7) is moved to the maximum limiting position (9) by the spring force (8) of the boucon spring (6).
A diesel engine with a supercharger, wherein the diesel engine is configured to remain in the governor case (11) while maintaining the same. 【請求項２】 請求項１に記載した過給機付きディーゼ
ルエンジンにおいて、ガバナケース(１１)内で燃料制限
用ストッパー(７)とステー(１５)とを揺動自在に枢支
し、この燃料制限用ストッパー(７)とステー(１５)の各
揺動端部間にブーコンスプリング(６)を介設し、ガバナ
ケース(１１)のケース壁(１２)にストッパー姿勢設定ボ
ルト(１３)とバネ力設定ボルト(１４)とを設け、ブーコ
ンスプリング(６)で付勢されたステー(１５)をバネ力設
定ボルト(１４)の先端で受け止めるとともに、ブーコン
スプリング(６)で付勢された燃料制限用ストッパー(７)
をストッパー姿勢設定ボルト(１３)の先端で受け止める
ように構成した、ことを特徴とする過給機付きディーゼ
ルエンジン。2. A diesel engine with a supercharger according to claim 1, wherein a fuel limiting stopper (7) and a stay (15) are pivotally supported in a governor case (11) so as to swing freely. A boucon spring (6) is interposed between each of the swinging ends of the limiting stopper (7) and the stay (15), and a stopper posture setting bolt (13) and a spring are mounted on the case wall (12) of the governor case (11). A force setting bolt (14) is provided, and a stay (15) urged by the boucon spring (6) is received by the tip of the spring force setting bolt (14), and a fuel limit urged by the boucon spring (6). Stopper (7)
A turbocharger-equipped diesel engine, which is configured to be received by a tip of a stopper posture setting bolt (13).
JP12121495A 1995-05-19 1995-05-19 Diesel engine with supercharger Expired - Lifetime JP3333799B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12121495A JP3333799B2 (en) 1995-05-19 1995-05-19 Diesel engine with supercharger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12121495A JP3333799B2 (en) 1995-05-19 1995-05-19 Diesel engine with supercharger

Publications (2)

Publication Number Publication Date
JPH08312381A JPH08312381A (en) 1996-11-26
JP3333799B2 true JP3333799B2 (en) 2002-10-15

Family

ID=14805709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12121495A Expired - Lifetime JP3333799B2 (en) 1995-05-19 1995-05-19 Diesel engine with supercharger

Country Status (1)

Country Link
JP (1) JP3333799B2 (en)

Also Published As

Publication number Publication date
JPH08312381A (en) 1996-11-26

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