JP2021046826A - Engine working machine - Google Patents

Engine working machine Download PDF

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JP2021046826A
JP2021046826A JP2019170090A JP2019170090A JP2021046826A JP 2021046826 A JP2021046826 A JP 2021046826A JP 2019170090 A JP2019170090 A JP 2019170090A JP 2019170090 A JP2019170090 A JP 2019170090A JP 2021046826 A JP2021046826 A JP 2021046826A
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engine
supercharger
oil
rotation
working machine
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JP7201560B2 (en
Inventor
小山　秀行
Hideyuki Koyama
秀行 小山
良憲 田中
Yoshinori Tanaka
良憲 田中
新吾 松延
Shingo Matsunobe
新吾 松延
莉菜 金子
Rina Kaneko
莉菜 金子
佳弘 多田
Yoshihiro Tada
佳弘 多田
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Kubota Corp
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Kubota Corp
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    • 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

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  • Supercharger (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

To provide an engine working machine which hardly causes the seizure of a bearing of a supercharger.SOLUTION DEVICE: An engine working machine comprises a supercharger 1, an oil supply passage 3 for supplying engine oil 2 to a bearing 1a of the supercharger 1, a hydraulic pressure detection device 4 for detecting the hydraulic pressure of a terminal end part 3a of the oil supply passage 3, and a supercharger rotation suppression device 6 for suppressing the rotation of the supercharger 1 caused by engine exhaust emission 5. The hydraulic pressure detection device 4 and the supercharger rotation suppression device 6 are linked with each other. When the hydraulic pressure detected by the hydraulic pressure detection device 4 is lower than a prescribed value, the rotation of the supercharger 1 caused by the engine exhaust emission 5 is suppressed by the supercharger rotation suppression device 6, and when the hydraulic pressure detected by the hydraulic pressure detection device 4 is equal to the prescribed value or higher, the suppression of the rotation of the supercharger 1 performed by the supercharger rotation suppression device 6 is released.SELECTED DRAWING: Figure 1

Description

本発明は、エンジン作業機に関し、詳しくは、過給機の軸受が焼き付き難いエンジン作業機に関する。 The present invention relates to an engine working machine, and more particularly to an engine working machine in which the bearing of the supercharger is hard to seize.

従来、過給機と、過給機の軸受にエンジンオイルを供給するオイル供給通路を備えたエンジンがある(例えば、特許文献１参照)。
この種のエンジンでは、エンジンオイルの粘度が高い寒冷始動時には、過給機の軸受へのエンジンオイルの供給が遅れる。 Conventionally, there are a supercharger and an engine provided with an oil supply passage for supplying engine oil to the bearing of the supercharger (see, for example, Patent Document 1).
In this type of engine, the supply of engine oil to the bearings of the turbocharger is delayed during cold start, when the viscosity of the engine oil is high.

実開昭５５−６９１２１号全文明細書(図面参照)Jitsukaisho 55-69121 full-text specification (see drawing)

《問題点》 過給機の軸受が焼き付くことがある。
特許文献１のエンジンでは、過給機の軸受へのエンジンオイルの供給遅れの期間中、高負荷の投入や高回転の設定により、エンジン出力の高まると、エンジン排気の増加により、過給機の回転が高まり、過給機の軸受が焼き付くことがある。 << Problem >> The bearing of the turbocharger may seize.
In the engine of Patent Document 1, during the period of delay in supplying engine oil to the bearing of the turbocharger, when the engine output is increased by applying a high load or setting a high rotation speed, the engine exhaust is increased and the supercharger is operated. The rotation may increase and the turbocharger bearing may seize.

本発明の課題は、過給機の軸受が焼き付き難いエンジン作業機を提供することにある。 An object of the present invention is to provide an engine working machine in which the bearing of the supercharger is hard to seize.

本願発明の構成は、次の通りである。
図１に例示するように、過給機(１)と、過給機(１)の軸受(１ａ)にエンジンオイル(２)を供給するオイル供給通路(３)と、オイル供給通路(３)の終端部(３ａ)の油圧を検出する油圧検出装置(４)と、エンジン排気(５)による過給機(１)の回転を抑制する過給機回転抑制装置(６)を備え、油圧検出装置(４)と過給機回転抑制装置(６)が連携され、油圧検出装置(４)で検出した油圧が所定値未満である場合には、エンジン排気(５)による過給機(１)の回転が過給機回転抑制装置(６)で抑制され、油圧検出装置(４)で検出した油圧が所定値以上である場合には、過給機回転抑制装置(６)による過給機(１)の回転の抑制が解除されるように構成されている、ことを特徴とするエンジン作業機。 The configuration of the present invention is as follows.
As illustrated in FIG. 1, the supercharger (1), the oil supply passage (3) for supplying the engine oil (2) to the bearing (1a) of the supercharger (1), and the oil supply passage (3). The turbocharger rotation suppressing device (6) for suppressing the rotation of the supercharger (1) due to the engine exhaust (5) is provided with the hydraulic pressure detecting device (4) for detecting the hydraulic pressure at the terminal portion (3a) of the turbocharger. When the device (4) and the turbocharger rotation suppression device (6) are linked and the oil pressure detected by the oil pressure detection device (4) is less than a predetermined value, the turbocharger (1) by the engine exhaust (5) When the rotation of the turbocharger is suppressed by the turbocharger rotation suppression device (6) and the oil pressure detected by the oil pressure detection device (4) is equal to or higher than a predetermined value, the supercharger ( An engine working machine characterized in that the suppression of rotation of 1) is released.

本願発明は、次の効果を奏する。
《効果》 過給機(１)の軸受(１ａ)が焼き付き難い。
この発明では、図１に例示するオイル供給通路(３)の終端部(３ａ)の油圧が比較的低圧である場合、すなわち、過給機(１)の軸受(１ａ)に十分なエンジンオイル(２)が供給されておらず、過給機(１)の軸受(１ａ)が潤滑不足である場合には、エンジン排気(５)による過給機(１)の回転が過給機回転抑制装置(６)で抑制されるため、過給機(１)の軸受(１ａ)が焼き付き難い。
《効果》 過給機(１)の軸受(１ａ)が適正に潤滑された場合には、エンジン排気(５)の増加に応じた過給が可能となる。
この発明では、図１に例示するオイル供給通路(３)の終端部(３ａ)の油圧が比較的高圧となった場合、すなわち、軸受(１ａ)に十分なエンジンオイル(２)が供給され、過給機(１)の軸受(１ａ)が適正に潤滑された場合には、過給機(１)の回転の抑制が解除されるため、エンジン排気(５)の増加に応じた過給が可能となる。 The invention of the present application has the following effects.
<< Effect >> The bearing (1a) of the turbocharger (1) is hard to seize.
In the present invention, when the hydraulic pressure of the terminal portion (3a) of the oil supply passage (3) illustrated in FIG. 1 is relatively low, that is, sufficient engine oil (1a) for the bearing (1a) of the supercharger (1) is used. When 2) is not supplied and the bearing (1a) of the supercharger (1) is insufficiently lubricated, the rotation of the supercharger (1) by the engine exhaust (5) is the supercharger rotation suppression device. Since it is suppressed by (6), the bearing (1a) of the turbocharger (1) is unlikely to seize.
<< Effect >> When the bearing (1a) of the turbocharger (1) is properly lubricated, supercharging can be performed according to the increase in the engine exhaust gas (5).
In the present invention, when the hydraulic pressure at the end portion (3a) of the oil supply passage (3) illustrated in FIG. 1 becomes relatively high, that is, sufficient engine oil (2) is supplied to the bearing (1a). When the bearing (1a) of the supercharger (1) is properly lubricated, the suppression of the rotation of the supercharger (1) is released, so that the supercharger is supercharged according to the increase in the engine exhaust gas (5). It will be possible.

本発明の実施形態に係る走行式エンジン作業機の模式図である。It is a schematic diagram of the traveling engine working machine which concerns on embodiment of this invention. 図２(Ａ)は図１の走行式エンジン作業機に用いるオイルスイッチ装置と配管継手を垂直面に沿って切断した断面図、図２(Ｂ)は同オイルスイッチ装置と配管継手と過給機を垂直面に沿って切断した断面図である。FIG. 2 (A) is a cross-sectional view of the oil switch device and the pipe joint used in the traveling engine work machine of FIG. 1 cut along a vertical plane, and FIG. 2 (B) shows the oil switch device, the pipe joint and the supercharger. It is sectional drawing which cut along the vertical plane.

図１と図２(Ａ)(Ｂ)は本発明の実施形態に係る走行式エンジン作業機を説明する図で、この実施形態では、エンジン(Ｅ)で駆動する作動油ポンプ(１５)の油圧で作業と走行を行う走行式エンジン作業機について説明する。 1 and 2 (A) and 2 (B) are views for explaining a traveling engine working machine according to an embodiment of the present invention. In this embodiment, the oil pressure of the hydraulic oil pump (15) driven by the engine (E) A traveling engine working machine that performs work and traveling will be described.

図１に示すように、この走行式エンジン作業機は、エンジン(Ｅ)と、エンジン(Ｅ)で駆動される作動油ポンプ(１５)と、作業装置(７)と、走行装置(８)と、作動油タンク(１６)と、作動油タンク(１６)の作動油(１７)を作動油ポンプ(１５)から作業装置(７)と走行装置(８)に供給する油圧回路(１８)と、作動油ポンプ(１５)と油圧回路(１８)を制御する作業機ＥＣＵ(１９)と、作業機ＥＣＵ(１９)に電気的に接続された作業操作装置(２０)と走行操作装置(２１)を備え、作業操作装置(２０)の作業操作と走行操作装置(２１)の走行操作に基づいて作業機ＥＣＵ(１９)が作動油ポンプ(１５)と油圧回路(１８)を制御することにより、作業装置(７)の作業動作と走行装置(８)の走行動作を制御する。 As shown in FIG. 1, this traveling engine working machine includes an engine (E), a hydraulic oil pump (15) driven by the engine (E), a working device (7), and a traveling device (8). , The hydraulic circuit (18) that supplies the hydraulic oil tank (16) and the hydraulic oil (17) of the hydraulic oil tank (16) from the hydraulic oil pump (15) to the working device (7) and the traveling device (8). The work machine ECU (19) that controls the hydraulic oil pump (15) and the hydraulic circuit (18), and the work operation device (20) and the travel operation device (21) that are electrically connected to the work machine ECU (19). The work machine ECU (19) controls the hydraulic oil pump (15) and the hydraulic circuit (18) based on the work operation of the work operation device (20) and the travel operation of the travel operation device (21). It controls the working operation of the device (7) and the traveling operation of the traveling device (8).

図１に示すエンジン(Ｅ)は、立型の直列多気筒ディーゼルエンジンである。
エンジン(Ｅ)は、シリンダブロック(２２)と、シリンダブロック(２２)の上部に組み付けられたシリンダヘッド(２３)と、シリンダヘッド(２３)の上部に組み付けられたヘッドカバー(２４)と、シリンダブロック(２２)の下部に組み付けられたオイルパン(２５)と、オイルパン(２５)内のエンジンオイル(２)をオイルポンプ(２６)の圧送でクランク軸(２７)の軸受等の摺動部(２８)に供給するオイルギャラリ(２９)と、シリンダヘッド(２３)の横一側に配置された排気マニホルド(３０)と、排気マニホルド(３０)の上部に配置された過給機(１)を備えている。
オイルポンプ(２６)は、クランク軸(２７)で駆動される。エンジン始動時には、クランク軸(２７)は、キースイッチ(図示せず)によって起動されたスタータ(３１)でクランキングされる。
過給機(１)は、タービンハウジング(１ｃ)と、コンプレッサハウジング(１ｄ)と、これらの間に配置された軸受(１ａ)を備えている。 The engine (E) shown in FIG. 1 is a vertical in-line multi-cylinder diesel engine.
The engine (E) includes a cylinder block (22), a cylinder head (23) assembled on the upper part of the cylinder block (22), a head cover (24) assembled on the upper part of the cylinder head (23), and a cylinder block. The oil pan (25) assembled in the lower part of (22) and the engine oil (2) in the oil pan (25) are pumped by the oil pump (26) to the sliding parts such as the bearings of the crank shaft (27). The oil gallery (29) supplied to 28), the exhaust manifold (30) arranged on one side of the cylinder head (23), and the supercharger (1) arranged above the exhaust manifold (30). I have.
The oil pump (26) is driven by a crankshaft (27). When starting the engine, the crankshaft (27) is cranked by a starter (31) activated by a key switch (not shown).
The turbocharger (1) includes a turbine housing (1c), a compressor housing (1d), and a bearing (1a) arranged between them.

走行式エンジン作業機がバックホーである場合には、作業装置(７)はブーム、アーム、バケット、ブレードと、これらを駆動する油圧シリンダを備え、走行装置(８)は油圧モータで駆動されるクローラ走行部を備えている。
作業操作装置(２０)は、作業操作レバーと、作業操作レバーの操作位置を検出して、その操作位置検出信号を作業機ＥＣＵ(１９)に送信するセンサを備え、走行操作装置(２１)は、アクセルレバーや操向レバーと、これらレバーの操作位置を検出して、その操作位置検出信号を作業機ＥＣＵ(１９)に送信するセンサを備えている。
作業機ＥＣＵ(１９)は、作動油ポンプ(１５)と油圧回路(１８)を制御して、作業機の作業や走行を制御するコントローラで、ＥＣＵは電子制御装置の略称である。作業機ＥＣＵ(１９)にはマイコンが用いられている。 When the traveling engine working machine is a backhoe, the working device (7) includes a boom, an arm, a bucket, a blade, and a hydraulic cylinder for driving them, and the traveling device (8) is a crawler driven by a hydraulic motor. It has a running unit.
The work operation device (20) includes a work operation lever and a sensor that detects the operation position of the work operation lever and transmits the operation position detection signal to the work machine ECU (19). It is provided with an accelerator lever and a steering lever, and a sensor that detects the operating position of these levers and transmits the operating position detection signal to the work equipment ECU (19).
The work machine ECU (19) is a controller that controls the hydraulic oil pump (15) and the hydraulic circuit (18) to control the work and running of the work machine, and the ECU is an abbreviation for an electronic control device. A microcomputer is used for the working machine ECU (19).

図１に示すように、このエンジン作業機は、過給機(１)と、過給機(１)の軸受(１ａ)にエンジンオイル(２)を供給するオイル供給通路(３)と、オイル供給通路(３)の終端部(３ａ)の油圧を検出する油圧検出装置(４)と、エンジン排気(５)による過給機(１)の回転を抑制する過給機回転抑制装置(６)を備え、油圧検出装置(４)と過給機回転抑制装置(６)が連携され、油圧検出装置(４)で検出した油圧が所定値未満である場合には、エンジン排気(５)による過給機(１)の回転が過給機回転抑制装置(６)で抑制され、油圧検出装置(４)で検出した油圧が所定値以上である場合には、過給機回転抑制装置(６)による過給機(１)の回転の抑制が解除されるように構成されている。
このエンジン作業機では、作業機ＥＣＵ(１９)が過給機回転抑制装置(６)として機能する。 As shown in FIG. 1, this engine working machine includes a supercharger (1), an oil supply passage (3) for supplying engine oil (2) to a bearing (1a) of the supercharger (1), and oil. A turbocharger rotation suppression device (6) that detects the oil pressure at the end (3a) of the supply passage (3) and suppresses the rotation of the turbocharger (1) by the engine exhaust (5). When the oil pressure detection device (4) and the turbocharger rotation suppression device (6) are linked and the oil pressure detected by the turbocharger detection device (4) is less than a predetermined value, the engine exhaust (5) causes an excess. When the rotation of the turbocharger (1) is suppressed by the supercharger rotation suppressing device (6) and the oil pressure detected by the hydraulic pressure detecting device (4) is equal to or higher than a predetermined value, the supercharger rotation suppressing device (6) It is configured so that the suppression of the rotation of the turbocharger (1) is released.
In this engine work machine, the work machine ECU (19) functions as a supercharger rotation suppressing device (6).

このエンジン作業機では、図１に示すオイル供給通路(３)の終端部(３ａ)の油圧が比較的低圧である場合、すなわち、過給機(１)の軸受(１ａ)に十分なエンジンオイル(２)が供給されておらず、過給機(１)の軸受(１ａ)が潤滑不足である場合には、エンジン排気(５)による過給機(１)の回転が過給機回転抑制装置(６)で抑制されるため、過給機(１)の軸受(１ａ)が焼き付き難い。
また、このエンジン作業機では、図１に示すオイル供給通路(３)の終端部(３ａ)の油圧が比較的高圧となった場合、すなわち、軸受(１ａ)に十分なエンジンオイル(２)が供給され、過給機(１)の軸受(１ａ)が適正に潤滑された場合には、過給機(１)の回転の抑制が解除されるため、エンジン排気(５)の増加に応じた過給が可能となる。 In this engine working machine, when the hydraulic pressure at the end portion (3a) of the oil supply passage (3) shown in FIG. 1 is relatively low, that is, sufficient engine oil is used for the bearing (1a) of the supercharger (1). When (2) is not supplied and the bearing (1a) of the supercharger (1) is insufficiently lubricated, the rotation of the supercharger (1) by the engine exhaust (5) suppresses the rotation of the supercharger. Since it is suppressed by the device (6), the bearing (1a) of the turbocharger (1) is unlikely to seize.
Further, in this engine working machine, when the hydraulic pressure at the end portion (3a) of the oil supply passage (3) shown in FIG. 1 becomes relatively high, that is, sufficient engine oil (2) is provided for the bearing (1a). When the bearing (1a) of the supercharger (1) is properly lubricated after being supplied, the suppression of the rotation of the supercharger (1) is released, so that the increase in the engine exhaust (5) is met. Supercharging is possible.

図１に示すように、過給機(１)の軸受(１ａ)にエンジンオイル(２)を供給するオイル供給通路(３)は、シリンダブロック(２２)の下寄りに配置された水平なオイルギャラリ(２９)から上向きに分岐され、終端部(３ａ)は高位置の過給機(１)の軸受(１ａ)の上側に位置している。過給機(１)の軸受(１ａ)の下側からオイル戻り通路(３ｂ)が下向きに導出され、過給機(１)の軸受(１ａ)を潤滑したエンジンオイル(２)は、オイル戻り通路(３ｂ)からオイルパン(２５)に戻る。 As shown in FIG. 1, the oil supply passage (3) for supplying the engine oil (2) to the bearing (1a) of the turbocharger (1) is a horizontal oil arranged below the cylinder block (22). It is branched upward from the gallery (29), and the end portion (3a) is located above the bearing (1a) of the turbocharger (1) at a high position. The oil return passage (3b) is led downward from the lower side of the bearing (1a) of the supercharger (1), and the engine oil (2) that lubricates the bearing (1a) of the supercharger (1) returns to the oil. Return to the oil pan (25) from the passage (3b).

図１に示す過給機回転抑制装置(６)の過給機回転抑制機能は、エンジン出力制限機能に基づく。
このエンジン作業機では、図１に示す過給機(１)の軸受(１ａ)が潤滑不足である場合には、エンジン出力が制限され、この制限に基づいて過給機(１)の回転が抑制され、高出力に基づく過給機(１)の軸受(１ａ)の焼き付きが抑制される。 The supercharger rotation suppressing function of the supercharger rotation suppressing device (6) shown in FIG. 1 is based on the engine output limiting function.
In this engine working machine, when the bearing (1a) of the supercharger (1) shown in FIG. 1 is insufficiently lubricated, the engine output is limited, and the rotation of the supercharger (1) is based on this limitation. It is suppressed, and seizure of the bearing (1a) of the turbocharger (1) based on high output is suppressed.

図１に示す過給機回転抑制装置(６)のエンジン出力制限機能は、エンジン(Ｅ)に投入される負荷を制限する負荷投入制限機能に基づく。
このエンジン作業機では、図１に示す過給機(１)の軸受(１ａ)が潤滑不足である場合には、負荷投入制限によりエンジン(Ｅ)への負荷の投入が制限され、この制限に基づいてエンジン出力が制限され、この制限に基づいて過給機(１)の回転が抑制され、エンジン(Ｅ)への高負荷の投入に基づく過給機(１)の軸受(１ａ)の焼き付きが抑制される。 The engine output limiting function of the supercharger rotation suppressing device (6) shown in FIG. 1 is based on the load input limiting function that limits the load applied to the engine (E).
In this engine working machine, when the bearing (1a) of the supercharger (1) shown in FIG. 1 is insufficiently lubricated, the load input limit limits the load input to the engine (E). Based on this, the engine output is limited, the rotation of the turbocharger (1) is suppressed based on this limitation, and the bearing (1a) of the turbocharger (1) is seized based on the high load applied to the engine (E). Is suppressed.

図１に示す過給機回転抑制装置(６)の負荷投入制限機能は、エンジン(Ｅ)で駆動される作業装置(７)の作業動作制限機能に基づく。
このエンジン作業機では、図１に示す過給機(１)の軸受(１ａ)が潤滑不足である場合には、作業装置(７)の作業動作が制限され、この制限に基づいてエンジン(Ｅ)に投入される負荷が制限され、この制限に基づいてエンジン出力が制限され、この制限に基づいて過給機(１)の回転が抑制され、過剰な作業動作による過給機(１)の軸受(１ａ)の焼き付きが抑制される。 The load input limiting function of the supercharger rotation suppressing device (6) shown in FIG. 1 is based on the working operation limiting function of the working device (7) driven by the engine (E).
In this engine working machine, when the bearing (1a) of the supercharger (1) shown in FIG. 1 is insufficiently lubricated, the working operation of the working device (7) is restricted, and the engine (E) is restricted based on this limitation. ) Is limited, the engine output is limited based on this limit, the rotation of the supercharger (1) is suppressed based on this limit, and the supercharger (1) due to excessive work operation Seizure of the bearing (1a) is suppressed.

図１に示す過給機(１)の軸受(１ａ)が潤滑不足である場合には、作業操作レバーでブーム等の作業装置(７)の作業操作を行っても、過給機回転抑制装置(６)の作業動作制限機能で、作業装置(７)の作業動作が禁止され、或いは作業動作の速度や範囲が抑制されることにより、エンジン(Ｅ)に投入される負荷が制限される。 When the bearing (1a) of the turbocharger (1) shown in FIG. 1 is insufficiently lubricated, even if the work operation of the work device (7) such as a boom is performed with the work operation lever, the supercharger rotation suppression device The work operation restriction function of (6) prohibits the work operation of the work device (7), or suppresses the speed and range of the work operation, thereby limiting the load applied to the engine (E).

また、図１に示す過給機回転抑制装置(６)の負荷投入制限機能は、エンジン(Ｅ)で駆動される走行装置(８)の走行動作制限機能に基づく。
このエンジン作業機では、図１に示す過給機(１)の軸受(１ａ)が潤滑不足である場合には、走行装置(８)の走行動作が制限され、この制限に基づいてエンジン(Ｅ)に投入される負荷が制限され、この制限に基づいてエンジン出力が制限され、この制限に基づいて過給機(１)の回転が抑制され、過剰な走行動作による過給機(１)の軸受(１ａ)の焼き付きが抑制される。 Further, the load input limiting function of the supercharger rotation suppressing device (6) shown in FIG. 1 is based on the running operation limiting function of the traveling device (8) driven by the engine (E).
In this engine working machine, when the bearing (1a) of the supercharger (1) shown in FIG. 1 is insufficiently lubricated, the running operation of the traveling device (8) is restricted, and the engine (E) is restricted based on this restriction. ) Is limited, the engine output is limited based on this limit, the rotation of the supercharger (1) is suppressed based on this limit, and the supercharger (1) due to excessive running operation Seizure of the bearing (1a) is suppressed.

図１に示す過給機(１)の軸受(１ａ)が潤滑不足である場合には、アクセルレバー等でクローラ走行部等の走行装置(８)の走行操作を行っても、過給機回転抑制装置(６)の走行動作制限機能で、走行装置(８)の走行動作が禁止され、走行速度が制限されることにより、エンジン(Ｅ)に投入される負荷が制限される。 When the bearing (1a) of the supercharger (1) shown in FIG. 1 is insufficiently lubricated, the supercharger rotates even if the traveling device (8) such as the crawler traveling portion is operated by the accelerator lever or the like. The traveling operation limiting function of the suppressing device (6) prohibits the traveling operation of the traveling device (8) and limits the traveling speed, thereby limiting the load applied to the engine (E).

図１に示す油圧検出装置(４)は、オイル供給通路(３)の終端部(３ａ)の油圧で開閉するオイルスイッチ装置(９)と、オイルスイッチ装置(９)の開閉による通電の有無に基づいて、油圧が所定値未満か所定値以上かを判定する油圧判定機能を備えた電気回路(１１)である。
このエンジン作業機では、油圧の判定を図１に示す簡単な電気回路(１１)で行うことができる。 The oil pressure detection device (4) shown in FIG. 1 has an oil switch device (9) that opens and closes by the oil pressure of the end portion (3a) of the oil supply passage (3) and the presence or absence of energization by opening and closing the oil switch device (9). Based on this, it is an electric circuit (11) having a hydraulic pressure determination function for determining whether the oil pressure is less than a predetermined value or more than a predetermined value.
In this engine working machine, the determination of the oil pressure can be performed by the simple electric circuit (11) shown in FIG.

図１に示すオイルスイッチ装置(９)は、オイル供給通路(３)の終端部(３ａ)の油圧が所定値未満である場合に閉じ、電気回路(１１)に通電がなされるように構。
このエンジン作業機では、過給機(１)の回転抑制中は警報が発せられ、運転者にエンジン出力等が制限されることを警告することができる。 The oil switch device (9) shown in FIG. 1 is closed when the oil pressure at the end portion (3a) of the oil supply passage (3) is less than a predetermined value, and the electric circuit (11) is energized.
In this engine working machine, an alarm is issued while the rotation of the supercharger (1) is suppressed, and the driver can be warned that the engine output or the like is limited.

図１に示す電気回路(１１)は、オイルスイッチ装置(９)と、作業機ＥＣＵ(１９)と、バッテリ(３２)を直列に接続したもので、作業機ＥＣＵ(１９)が通電の有無により油圧判定を行う。 The electric circuit (11) shown in FIG. 1 is a device in which an oil switch device (9), a work machine ECU (19), and a battery (32) are connected in series, and the work machine ECU (19) is energized or not. Make a hydraulic judgment.

図１に示す警報装置(１２)は、発光によって警報を発する表示灯(１３)を備えている。
このエンジン作業機では、図１に示す過給機(１)の回転抑制中は、表示灯(１３)の発光により、明瞭な警報を発することができる。 The alarm device (12) shown in FIG. 1 includes an indicator lamp (13) that emits an alarm by emitting light.
In this engine working machine, a clear alarm can be issued by the light emission of the indicator light (13) while the rotation of the supercharger (1) shown in FIG. 1 is suppressed.

表示灯(１３)には電球が用いられている。表示灯(１３)にはＬＥＤ(発光ダイオード)を用いてもよい。また、警報装置(１２)は、表示灯(１３)と共に、或いは、表示灯(１３)に代えて、警報ブザーを用いてもよい。 A light bulb is used as the indicator light (13). An LED (light emitting diode) may be used for the indicator lamp (13). Further, the alarm device (12) may use an alarm buzzer together with the indicator light (13) or instead of the indicator light (13).

図２(Ｂ)に示すように、オイル供給通路(３)は、終端部(３ａ)に、過給機(１)の軸受(１ａ)のオイル入口(１ｂ)に接続される配管継手(１４)を備え、この配管継手(１４)にオイルスイッチ装置(９)が取り付けられている。
このエンジン作業機では、図２(Ｂ)に示すように、オイルスイッチ装置(９)を取り付ける取付座や取付孔を過給機(１)に設ける必要がなく、既存の過給機(１)をそのまま用いることができる。 As shown in FIG. 2B, the oil supply passage (3) is connected to the terminal portion (3a) of the pipe joint (14) connected to the oil inlet (1b) of the bearing (1a) of the turbocharger (1). ), And an oil switch device (9) is attached to this pipe joint (14).
In this engine working machine, as shown in FIG. 2 (B), it is not necessary to provide a mounting seat and a mounting hole for mounting the oil switch device (9) in the supercharger (1), and the existing supercharger (1) Can be used as it is.

図２(Ａ)に示すように、配管継手(１４)は、環状のアイジョイント(１４ａ)と、アイジョイント(１４ａ)の中心を貫通して図１(Ｂ)に示す過給機(１)の軸受(１ａ)のオイル入口(１ｂ)にねじ嵌合される中空ボルト(１４ｂ)を備え、図１(Ａ)に示すオイル供給通路(３)のエンジンオイル(２)がアイジョイント(１４ａ)から中空ボルト(１４ｂ)を経て図１(Ｂ)に示す過給機(１)の軸受(１ａ)に供給されるように構成されている。
図２(Ａ)に示すように、オイルスイッチ装置(９)は、スイッチハウジング(９ａ)と、スイッチハウジング(９ａ)内の油圧室(９ｂ)と、油圧室(９ｂ)内の油圧で開閉するスイッチ片(９ｃ)(９ｄ)と、油圧室(９ｂ)から導出された連通筒(９ｅ)と、連通筒(９ｅ)の外周のオネジ部(９ｆ)を備えている。 As shown in FIG. 2 (A), the pipe joint (14) penetrates the annular eye joint (14a) and the center of the eye joint (14a), and the supercharger (1) shown in FIG. 1 (B). The engine oil (2) of the oil supply passage (3) shown in FIG. 1 (A) is provided with a hollow bolt (14b) screw-fitted to the oil inlet (1b) of the bearing (1a) of the eye joint (14a). It is configured to be supplied to the bearing (1a) of the turbocharger (1) shown in FIG. 1 (B) via a hollow bolt (14b).
As shown in FIG. 2A, the oil switch device (9) opens and closes by the switch housing (9a), the hydraulic chamber (9b) in the switch housing (9a), and the hydraulic pressure in the hydraulic chamber (9b). It includes switch pieces (9c) (9d), a communication cylinder (9e) derived from a hydraulic chamber (9b), and a male screw portion (9f) on the outer periphery of the communication cylinder (9e).

図２(Ａ)に示すように、オイルスイッチ装置(９)は、配管継手(１４)の中空ボルト(１４ｂ)のボルト頭部(１４ｃ)に開口させたメネジ孔(１４ｄ)にオイルスイッチ装置(９)の連通筒(９ｅ)をねじ嵌合させて、中空ボルト(１４ｂ)に取り付けられ、連通筒(９ｅ)を介して、スイッチハウジング(９ａ)内の油圧室(９ｂ)と図２(Ｂ)に示す過給機(１)の軸受(１ａ)が連通している。
このエンジン作業機では、図２(Ａ)に示すように、配管継手(１４)にオイルスイッチ装置(９)を強固に取り付けることができる。 As shown in FIG. 2A, the oil switch device (9) has an oil switch device (14d) in a female screw hole (14d) opened in a bolt head (14c) of a hollow bolt (14b) of a pipe joint (14). The communication cylinder (9e) of 9) is screw-fitted and attached to the hollow bolt (14b), and the hydraulic chamber (9b) in the switch housing (9a) and FIG. The bearing (1a) of the supercharger (1) shown in) is in communication.
In this engine working machine, as shown in FIG. 2A, the oil switch device (9) can be firmly attached to the pipe joint (14).

図２(Ａ)に示す一対のスイッチ片(９ｃ)(９ｄ)のうち、一方は固定スイッチ片(９ｃ)、他方は可動スイッチ片(９ｄ)である。可動スイッチ片(９ｄ)は油圧室(９ｂ)に臨むダイヤフラム(９ｇ)に取り付けられ、付勢ばね(９ｈ)で固定スイッチ片(９ｃ)に向けて付勢されている。
油圧室(９ｂ)の油圧が所定値未満である場合には、可動スイッチ片(９ｄ)は付勢ばね(９ｈ)の付勢力で固定スイッチ片(９ｃ)に当接し、スイッチが閉じた状態になり、油圧室(９ｂ)の油圧が所定値以上になると、油圧を受けた可動スイッチ片(９ｄ)は付勢ばね(９ｈ)の付勢力に抗して固定スイッチ片(９ｃ)から離間し、スイッチが開いた状態になる。 Of the pair of switch pieces (9c) and (9d) shown in FIG. 2A, one is a fixed switch piece (9c) and the other is a movable switch piece (9d). The movable switch piece (9d) is attached to a diaphragm (9g) facing the hydraulic chamber (9b), and is urged toward the fixed switch piece (9c) by an urging spring (9h).
When the oil pressure in the hydraulic chamber (9b) is less than a predetermined value, the movable switch piece (9d) comes into contact with the fixed switch piece (9c) by the urging force of the urging spring (9h), and the switch is closed. Then, when the oil pressure in the hydraulic chamber (9b) becomes equal to or higher than a predetermined value, the movable switch piece (9d) that has received the oil pressure separates from the fixed switch piece (9c) against the urging force of the urging spring (9h). The switch will be open.

図２(Ｂ)に示すように、過給機(１)の軸受(１ａ)は、タービンホイール(１ｅ)とコンプレッサホイール(１ｆ)を連結する連結軸(１ｇ)を枢支している。 As shown in FIG. 2B, the bearing (1a) of the turbocharger (1) pivotally supports a connecting shaft (1 g) that connects the turbine wheel (1e) and the compressor wheel (1f).

本発明の実施形態に係る走行式エンジン作業機の説明は以上の通りであるが、本発明は上記実施形態に限定されるものではなく、トラクタ、コンバイン等の走行式エンジン作業機の他、エンジン発電機等の定置式エンジン作業機に用いることもできる。 The description of the traveling engine working machine according to the embodiment of the present invention is as described above, but the present invention is not limited to the above embodiment, and the traveling engine working machine such as a tractor and a combine, as well as an engine It can also be used for stationary engine work machines such as generators.

(１)…過給機、(１ａ)…軸受、(１ｂ)…オイル入口、(２)…エンジンオイル、(３)…オイル供給通路、(３ａ)…終端部、(４)…油圧検出装置、(５)…エンジン排気、(６)…過給機回転抑制装置、(７)…作業装置、(８)…走行装置、(９)…オイルスイッチ装置、(９ａ)…スイッチハウジング、(９ｂ)…油圧室、(９ｃ)(９ｄ)…スイッチ片、(９ｅ)…連通筒、(９ｆ)…オネジ部、(１０)…油圧判定装置、(１１)…電気回路、(１２)…警報装置、(１３)…表示灯、(１４)…配管継手、(１４ａ)…アイジョイント、(１４ｂ)…中空ボルト、(１４ｃ)…ボルト頭部、(１４ｄ)…メネジ孔、(Ｅ)…エンジン。 (1) ... Supercharger, (1a) ... Bearing, (1b) ... Oil inlet, (2) ... Engine oil, (3) ... Oil supply passage, (3a) ... Terminal, (4) ... Hydraulic detector , (5) ... Engine exhaust, (6) ... Supercharger rotation suppression device, (7) ... Working device, (8) ... Traveling device, (9) ... Oil switch device, (9a) ... Switch housing, (9b) ) ... Hydraulic chamber, (9c) (9d) ... Switch piece, (9e) ... Communication cylinder, (9f) ... Male screw part, (10) ... Hydraulic judgment device, (11) ... Electric circuit, (12) ... Alarm device , (13) ... Indicator light, (14) ... Piping joint, (14a) ... Eye joint, (14b) ... Hollow bolt, (14c) ... Bolt head, (14d) ... Female screw hole, (E) ... Engine.

Claims (10)

過給機(１)と、過給機(１)の軸受(１ａ)にエンジンオイル(２)を供給するオイル供給通路(３)と、オイル供給通路(３)の終端部(３ａ)の油圧を検出する油圧検出装置(４)と、エンジン排気(５)による過給機(１)の回転を抑制する過給機回転抑制装置(６)を備え、油圧検出装置(４)と過給機回転抑制装置(６)が連携され、油圧検出装置(４)で検出した油圧が所定値未満である場合には、エンジン排気(５)による過給機(１)の回転が過給機回転抑制装置(６)で抑制され、油圧検出装置(４)で検出した油圧が所定値以上である場合には、過給機回転抑制装置(６)による過給機(１)の回転の抑制が解除されるように構成されている、ことを特徴とするエンジン作業機。 The hydraulic pressure of the supercharger (1), the oil supply passage (3) for supplying the engine oil (2) to the bearing (1a) of the supercharger (1), and the terminal portion (3a) of the oil supply passage (3). The turbocharger rotation suppressing device (6) for suppressing the rotation of the supercharger (1) due to the engine exhaust (5) is provided with the hydraulic pressure detecting device (4) for detecting the oil pressure detecting device (4) and the supercharger. When the rotation suppressing device (6) is linked and the hydraulic pressure detected by the hydraulic pressure detecting device (4) is less than a predetermined value, the rotation of the supercharger (1) by the engine exhaust (5) suppresses the rotation of the supercharger. When the pressure is suppressed by the device (6) and the oil pressure detected by the oil pressure detection device (4) is equal to or higher than a predetermined value, the suppression of the rotation of the supercharger (1) by the turbocharger rotation suppression device (6) is released. An engine turbocharger characterized by being configured to be. 請求項１に記載されたエンジン作業機において、
過給機回転抑制装置(６)は、エンジン出力制限機能を備えている、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 1,
The supercharger rotation suppression device (6) is an engine work machine characterized by having an engine output limiting function. 請求項２に記載されたエンジン作業機において、
過給機回転抑制装置(６)のエンジン出力制限機能は、エンジン(Ｅ)に投入される負荷を制限する負荷投入制限機能に基づく、ことを特徴とするエジン。 In the engine working machine according to claim 2.
The engine output limiting function of the supercharger rotation suppressing device (6) is based on a load loading limiting function that limits the load applied to the engine (E). 請求項３に記載されたエンジン作業機において、
過給機回転抑制装置(６)の負荷投入制限機能は、エンジン(Ｅ)で駆動される作業装置(７)の作業動作制限機能に基づく、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 3,
The load input limiting function of the supercharger rotation suppressing device (6) is based on the work operation limiting function of the working device (7) driven by the engine (E). 請求項３または請求項４に記載されたエンジン作業機において、
過給機回転抑制装置(６)の負荷投入制限機能は、エンジン(Ｅ)で駆動される走行装置(８)の走行動作制限機能に基づく、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 3 or 4.
An engine work machine characterized in that the load input limiting function of the supercharger rotation suppressing device (6) is based on the running operation limiting function of the traveling device (8) driven by the engine (E). 請求項１から請求項５のいずれかに記載されたエンジン作業機において、
油圧検出装置(４)は、オイル供給通路(３)の終端部(３ａ)の油圧で開閉するオイルスイッチ装置(９)と、オイルスイッチ装置(９)の開閉による通電の有無に基づいて、油圧が所定値未満か所定値以上かを判定する油圧判定機能を備えた電気回路(１１)である、ことを特徴とするエンジン作業機。 In the engine working machine according to any one of claims 1 to 5.
The oil pressure detection device (4) is based on the presence or absence of energization by opening and closing the oil switch device (9) and the oil switch device (9) that are opened and closed by the hydraulic pressure at the end portion (3a) of the oil supply passage (3). An engine working machine, which is an electric circuit (11) having a hydraulic pressure determination function for determining whether is less than a predetermined value or more than a predetermined value. 請求項６に記載されたエンジン作業機において、
オイルスイッチ装置(９)は、オイル供給通路(３)の終端部(３ａ)の油圧が所定値未満である場合に閉じ、電気回路(１１)に通電がなされるように構成され、電気回路(１１)は、通電時に警報を発する警報装置(１２)を備えている、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 6.
The oil switch device (9) is configured to be closed when the oil pressure at the end portion (3a) of the oil supply passage (3) is less than a predetermined value, and the electric circuit (11) is energized. The engine work machine 11) is provided with an alarm device (12) that issues an alarm when energized. 請求項７に記載されたエンジン作業機において、
警報装置(１２)は、発光によって警報を発する表示灯(１３)を備えている、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 7.
The alarm device (12) is an engine work machine including an indicator light (13) that emits an alarm by emitting light. 請求項１から請求項８に記載されたエンジン作業機において、
オイル供給通路(３)は、終端部(３ａ)に、過給機(１)の軸受(１ａ)のオイル入口(１ｂ)に接続される配管継手(１４)を備え、この配管継手(１４)にオイルスイッチ装置(９)が取り付けられている、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 1 to 8.
The oil supply passage (3) is provided with a pipe joint (14) connected to the oil inlet (1b) of the bearing (1a) of the supercharger (1) at the terminal portion (3a), and the pipe joint (14) is provided. An engine work machine characterized in that an oil switch device (9) is attached to the bearing. 請求項９に記載されたエンジン作業機において、
配管継手(１４)は、環状のアイジョイント(１４ａ)と、アイジョイント(１４ａ)の中心を貫通して過給機(１)の軸受(１ａ)のオイル入口(１ｂ)にねじ嵌合される中空ボルト(１４ｂ)を備え、オイル供給通路(３)のエンジンオイル(２)がアイジョイント(１４ａ)から中空ボルト(１４ｂ)を経て過給機(１)の軸受(１ａ)に供給されるように構成され、
オイルスイッチ装置(９)は、スイッチハウジング(９ａ)と、スイッチハウジング(９ａ)内の油圧室(９ｂ)と、油圧室(９ｂ)内の油圧で開閉するスイッチ片(９ｃ)(９ｄ)と、油圧室(９ｂ)から導出された連通筒(９ｅ)と、連通筒(９ｅ)の外周のオネジ部(９ｆ)を備え、
オイルスイッチ装置(９)は、配管継手(１４)の中空ボルト(１４ｂ)のボルト頭部(１４ｃ)に開口させたメネジ孔(１４ｄ)にオイルスイッチ装置(９)の連通筒(９ｅ)をねじ嵌合させて、中空ボルト(１４ｂ)に取り付けられ、連通筒(９ｅ)を介して、スイッチハウジング(９ａ)内の油圧室(９ｂ)と過給機(１)の軸受(１ａ)が連通している、ことを特徴とするエンジン作業機。 In the engine working machine according to claim 9.
The pipe joint (14) is screw-fitted to the annular eye joint (14a) and the oil inlet (1b) of the bearing (1a) of the turbocharger (1) through the center of the eye joint (14a). A hollow bolt (14b) is provided so that the engine oil (2) in the oil supply passage (3) is supplied from the eye joint (14a) to the bearing (1a) of the turbocharger (1) via the hollow bolt (14b). Consists of
The oil switch device (9) includes a switch housing (9a), a hydraulic chamber (9b) in the switch housing (9a), and switch pieces (9c) (9d) that are opened and closed by hydraulic pressure in the hydraulic chamber (9b). It is provided with a communication cylinder (9e) derived from the hydraulic chamber (9b) and a male screw portion (9f) on the outer periphery of the communication cylinder (9e).
In the oil switch device (9), the communication cylinder (9e) of the oil switch device (9) is screwed into the female screw hole (14d) opened in the bolt head (14c) of the hollow bolt (14b) of the pipe joint (14). It is fitted and attached to the hollow bolt (14b), and the hydraulic chamber (9b) in the switch housing (9a) and the bearing (1a) of the supercharger (1) communicate with each other via the communication cylinder (9e). An engine work machine characterized by being.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641428A (en) * 1979-09-10 1981-04-18 Nissan Motor Co Ltd Damage preventing device for bearing of exhaust turbocharger
JPS5670124U (en) * 1979-11-05 1981-06-10
JPS56127840U (en) * 1980-02-29 1981-09-29
JPS59113236A (en) * 1982-12-20 1984-06-29 Mazda Motor Corp Supercharger protecting apparatus for supercharged engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5670124B2 (en) 2010-08-23 2015-02-18 株式会社ジャパンディスプレイ Display device with touch detection function, drive circuit, driving method of display device with touch detection function, and electronic device
JP5641428B2 (en) 2011-01-24 2014-12-17 株式会社リコー Packaging box

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641428A (en) * 1979-09-10 1981-04-18 Nissan Motor Co Ltd Damage preventing device for bearing of exhaust turbocharger
JPS5670124U (en) * 1979-11-05 1981-06-10
JPS56127840U (en) * 1980-02-29 1981-09-29
JPS59113236A (en) * 1982-12-20 1984-06-29 Mazda Motor Corp Supercharger protecting apparatus for supercharged engine

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