JPH0526265Y2 - - Google Patents
Info
- Publication number
- JPH0526265Y2 JPH0526265Y2 JP1986160776U JP16077686U JPH0526265Y2 JP H0526265 Y2 JPH0526265 Y2 JP H0526265Y2 JP 1986160776 U JP1986160776 U JP 1986160776U JP 16077686 U JP16077686 U JP 16077686U JP H0526265 Y2 JPH0526265 Y2 JP H0526265Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- fluid clutch
- outlet
- recovery turbine
- bypass valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 42
- 238000011084 recovery Methods 0.000 claims description 26
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 80
- 239000010720 hydraulic oil Substances 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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
Landscapes
- Supercharger (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案はターボコンパウンド機関、特に流体ク
ラツチの異常時、回収タービンの運転を停止する
ターボコンパウンド機関に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a turbo compound engine, and particularly to a turbo compound engine that stops operation of a recovery turbine when a fluid clutch malfunctions.
［従来の技術］
実開昭60−157941号公報に開示されるターボコ
ンパウンド内燃機関では、機関の排気管にターボ
過給機を接続し、ターボ過給機により吸気過給を
行い、同時にターボ過給機の後段にバイパス弁を
介し回収タービンを接続し、回収タービンの吸収
動力を例えば流体クラツチを介し機関のクランク
軸へ伝達している。バイパス弁は機関の低速域で
開き、ターボ過給機を出た排気を直接外部へ放出
し、回収タービンの駆動による動力損失を回避し
ている。[Prior Art] In the turbo compound internal combustion engine disclosed in Japanese Utility Model Application No. 60-157941, a turbo supercharger is connected to the exhaust pipe of the engine, and the turbo supercharger performs intake supercharging, and at the same time the turbo supercharger is A recovery turbine is connected downstream of the feeder via a bypass valve, and the absorbed power of the recovery turbine is transmitted to the crankshaft of the engine via, for example, a fluid clutch. The bypass valve opens at low engine speeds and releases the exhaust gas from the turbocharger directly to the outside, avoiding power loss caused by driving the recovery turbine.
上述のターボコンパウンド機関では、流体クラ
ツチへ機関の潤滑油が作動油として貫流される
が、流体クラツチの出口通路に介装された逆止弁
が閉じたままになると、流体クラツチの作動油は
循環しなくなり、流体クラツチの内部で翼車によ
り撹拌され、油温が急上昇し、流体クラツチの軸
受が焼き付き、破損する恐れがある。 In the above-mentioned turbo compound engine, the lubricating oil of the engine flows through the fluid clutch as hydraulic oil, but if the check valve installed in the outlet passage of the fluid clutch remains closed, the hydraulic oil of the fluid clutch is circulated. The oil will become agitated by the impeller inside the fluid clutch, and the oil temperature will rise rapidly, potentially causing seizure and damage to the fluid clutch bearings.
［考案が解決しようとする問題点］
本考案の目的は上述の問題に鑑み、回収タービ
ンと機関とを連結する流体クラツチの油入口の油
圧と油出口の油温に基づき、流体クラツチの危険
な運転状態を回避する、ターボコンパウンド機関
を提供することにある。[Problems to be solved by the invention] In view of the above-mentioned problems, the purpose of the invention is to solve the dangerous problem of the fluid clutch, based on the oil pressure at the oil inlet and the oil temperature at the oil outlet of the fluid clutch that connects the recovery turbine and the engine. The purpose of the present invention is to provide a turbo compound engine that avoids operating conditions.
［問題を解決するための手段］
上記目的を達成するために、本考案の構成はタ
ーボ過給機のタービンの出口と回収タービンの入
口との間にバイパス弁を接続し、回収タービンの
軸と機関のクランク軸とを連結する流体クラツチ
の油入口に油圧センサを、油出口に油温センサを
それぞれ配設し、油圧センサと油温センサの検出
信号に基づき、流体クラツチの油入口の油圧が所
定値以下の時、油出口の油温が所定値以上の時、
それぞれバイパス弁を開く出力信号を発生する電
子制御装置を備えたものである。[Means for solving the problem] In order to achieve the above object, the configuration of the present invention connects a bypass valve between the outlet of the turbine of the turbocharger and the inlet of the recovery turbine, and connects the bypass valve with the shaft of the recovery turbine. A hydraulic sensor is installed at the oil inlet of the fluid clutch that connects the engine crankshaft, and an oil temperature sensor is installed at the oil outlet.Based on the detection signals from the oil pressure sensor and the oil temperature sensor, the oil pressure at the oil inlet of the fluid clutch is adjusted. When the oil temperature at the oil outlet is below the specified value,
Each is equipped with an electronic controller that generates an output signal that opens the bypass valve.
［作用］
油圧センサと油温センサにより検出された流体
クラツチの油入口の油圧が所定値以下に、または
油出口の油温が所定値以上になると、電子制御装
置の出力によりバイパス弁が開かれる。ターボ過
給機から出た排気はバイパス管から外部へ放出さ
れ、回収タービンが停止するので、流体クラツチ
の軸受の焼付きなどによる破損を回避できる。[Function] When the oil pressure at the oil inlet of the fluid clutch detected by the oil pressure sensor and oil temperature sensor falls below a predetermined value, or when the oil temperature at the oil outlet exceeds a predetermined value, the bypass valve is opened by the output of the electronic control device. . The exhaust gas from the turbocharger is discharged to the outside through the bypass pipe, and the recovery turbine is stopped, thereby avoiding damage to the fluid clutch bearings due to seizing or the like.
［考案の実施例］
第１図に示すように、機関２の排気マニホール
ド３に連なる排気管４は、ターボ過給機５のター
ビン８の入口に接続され、タービン８の出口は接
続管９を介して回収タービン１２の入口へ接続さ
れる。回収タービン１２の出口は排気管２６に接
続され、消音器を経て外部へ開放される。ターボ
過給機５は軸７によりタービン８の翼車とブロア
６の翼車とを結合され、ブロア６により吸気が加
圧されて機関２へ供給される。[Embodiment of the invention] As shown in FIG. 1, an exhaust pipe 4 connected to an exhaust manifold 3 of an engine 2 is connected to an inlet of a turbine 8 of a turbocharger 5, and an outlet of the turbine 8 is connected to a connecting pipe 9. It is connected to the inlet of the recovery turbine 12 via. The outlet of the recovery turbine 12 is connected to an exhaust pipe 26 and opened to the outside through a muffler. In the turbocharger 5, the blade wheel of the turbine 8 and the blade wheel of the blower 6 are connected by a shaft 7, and intake air is pressurized by the blower 6 and supplied to the engine 2.
回収タービン１２の軸１３は遊星歯車減速機１
４の太陽歯車へ結合され、一方、リング歯車の軸
１５は流体クラツチ１６の入力側へ結合される。
流体クラツチ１６の出力側は軸１７により、減速
機１８の入力歯車２１へ結合され、出力歯車２４
は機関２のクランク軸１９へ結合される。 The shaft 13 of the recovery turbine 12 is a planetary gear reducer 1
4, while the shaft 15 of the ring gear is connected to the input side of the fluid clutch 16.
The output side of the fluid clutch 16 is connected by a shaft 17 to an input gear 21 of a reducer 18 and an output gear 24.
is coupled to the crankshaft 19 of the engine 2.
減速機１８は軸１７の歯車２１に噛み合う歯車
２２と、クランク軸１９の歯車２４に噛み合う歯
車２３とを同軸に支持され、かつ両者は一方向ク
ラツチ２５により結合される。一方向クラツチ２
５は歯車２２の回転を歯車２３へ伝達するが、歯
車２３の回転を歯車２２へ伝達しないように構成
され、回収タービン１２がクランク軸１９により
逆駆動されるのを防ぐ。 The reducer 18 is coaxially supported with a gear 22 meshing with a gear 21 on a shaft 17 and a gear 23 meshing with a gear 24 on a crankshaft 19, and both are coupled by a one-way clutch 25. one way clutch 2
5 transmits the rotation of the gear 22 to the gear 23 but is configured not to transmit the rotation of the gear 23 to the gear 22, thereby preventing the recovery turbine 12 from being reversely driven by the crankshaft 19.
ターボ過給機５のタービン８の出口と回収ター
ビン１２の入口とを連通する接続管９の途中に、
バイパス弁１０が設けられ、バイパス弁１０を開
くとタービン８の出口側がバイパス管２０へ連通
され、排気は外部へ排出され、回収タービン１２
へは供給されない。 In the middle of the connecting pipe 9 that communicates the outlet of the turbine 8 of the turbocharger 5 and the inlet of the recovery turbine 12,
A bypass valve 10 is provided, and when the bypass valve 10 is opened, the outlet side of the turbine 8 is communicated with the bypass pipe 20, and the exhaust gas is discharged to the outside.
is not supplied to.
バイパス弁１０は流体クツラチ１６の油入口の
油圧が所定値よりも高いと閉じられる。また、バ
イパス弁１０は流体クラツチ１６の油出口の油温
が異常に高くなると開かれる。 The bypass valve 10 is closed when the oil pressure at the oil inlet of the fluid clutch 16 is higher than a predetermined value. Also, the bypass valve 10 is opened when the oil temperature at the oil outlet of the fluid clutch 16 becomes abnormally high.
図示の実施例では、機関２のオイルギヤラリの
潤滑油が、流体クラツチ１６へ作動油として供給
される。流体クラツチ１６の作動油は逆止弁３９
を経て機関２のオイルパン４０へ戻される。流体
クラツチ１６の油入口に油圧センサ３７が、油出
口に油温センサ２８がそれぞれ設けられる。油圧
センサ３７と油温センサ２８の各信号は、マイク
ロコンピユータからなる電子制御装置３６へ入力
される。電子制御装置３６は流体クラツチ１６の
油入口の油圧と油出口の油温に基づく出力信号に
より、アクチユエータ（例えば電磁アクチユエー
タ）を駆動し、バイパス弁１０を開閉する。 In the illustrated embodiment, lubricating oil from the oil gear of engine 2 is supplied to fluid clutch 16 as hydraulic oil. The hydraulic fluid of the fluid clutch 16 is supplied to the check valve 39.
The oil is then returned to the oil pan 40 of the engine 2. An oil pressure sensor 37 is provided at the oil inlet of the fluid clutch 16, and an oil temperature sensor 28 is provided at the oil outlet. Signals from the oil pressure sensor 37 and the oil temperature sensor 28 are input to an electronic control unit 36 consisting of a microcomputer. The electronic control unit 36 drives an actuator (for example, an electromagnetic actuator) to open and close the bypass valve 10 based on output signals based on the oil pressure at the oil inlet and the oil temperature at the oil outlet of the fluid clutch 16.
次に、本考案によるターボコンパウンド機関の
作動について説明する。機関２を潤滑する油ポン
プの吐出圧は、機関回転数にほぼ比例し、機関２
のオイルギヤラリから流体クラツチ１６へ供給さ
れる作動油の油圧は油圧センサ３７により、また
流体クラツチ１６から機関２へ戻される作動油の
油温は油温センサ２８によりそれぞれ検出され、
電子制御装置３６へ入力される。流体クラツチ１
６の油入口の油圧が所定値p1（例えば３Kg／cm2）
を超えると、電子制御装置３６の出力信号により
アクチユエータ（例えば電磁アクチユエータ）が
駆動され、バイパス弁１０が閉じられる。流体ク
ラツチ１６の油出口の油圧は逆止弁３９の作用に
より大気圧よりも高く（例えば0.5Kg／cm2）なつ
ている。 Next, the operation of the turbo compound engine according to the present invention will be explained. The discharge pressure of the oil pump that lubricates the engine 2 is approximately proportional to the engine rotation speed.
The oil pressure of the hydraulic oil supplied from the oil gear to the fluid clutch 16 is detected by an oil pressure sensor 37, and the temperature of the hydraulic oil returned from the fluid clutch 16 to the engine 2 is detected by an oil temperature sensor 28.
It is input to the electronic control unit 36. fluid clutch 1
The oil pressure at the oil inlet of No. 6 is a predetermined value p1 (for example, 3Kg/cm 2 )
When the value exceeds 0, an actuator (for example, an electromagnetic actuator) is driven by the output signal of the electronic control device 36, and the bypass valve 10 is closed. The oil pressure at the oil outlet of the fluid clutch 16 is higher than atmospheric pressure (for example, 0.5 kg/cm 2 ) due to the action of the check valve 39.
逆止弁３９に異物が詰り閉じたままになると、
流体クラツチ１６における作動油の循環が阻止さ
れることになり、翼車により撹拌されて油温が異
常に上昇する。流体クラツチ１６の油温は油出口
に設けた油温センサ２８により検出され、電子制
御装置３６へ入力される。油温が所定値t2（例え
ば180℃）を超えると、電子制御装置３６の出力
信号によりバイパス弁１０が開かれる。したがつ
て、ターボ過給機５のタービン８からの排気は接
続管９、バイパス弁１０、バイパス管２０を経て
外部へ放出される。回収タービン１２は排気が導
入されなくなり停止する。 If the check valve 39 is clogged with foreign matter and remains closed,
Circulation of the hydraulic oil in the fluid clutch 16 will be blocked, and the oil will be agitated by the impeller and the oil temperature will rise abnormally. The oil temperature of the fluid clutch 16 is detected by an oil temperature sensor 28 provided at the oil outlet, and is input to the electronic control unit 36. When the oil temperature exceeds a predetermined value t2 (for example, 180° C.), the bypass valve 10 is opened by an output signal from the electronic control device 36. Therefore, the exhaust gas from the turbine 8 of the turbocharger 5 is discharged to the outside through the connecting pipe 9, the bypass valve 10, and the bypass pipe 20. The recovery turbine 12 stops introducing exhaust gas.
第２図は上述の制御プログラムの流れ図を示
す。同図において、P11〜P14は各ステツプを示
す。P11で流体クラツチ１６の油入口の油圧が所
定値P1よりも高いか否かを判別し、油圧が所定
値p1よりも低い場合は、P14でバイパス弁１０を
開いて回収タービン１２を停止する。 FIG. 2 shows a flowchart of the control program described above. In the figure, P11 to P14 indicate each step. At P11, it is determined whether the oil pressure at the oil inlet of the fluid clutch 16 is higher than a predetermined value P1. If the oil pressure is lower than the predetermined value P1, the bypass valve 10 is opened at P14 to stop the recovery turbine 12.
P11で油圧が所定値p1よりも高い場合は、P12
で流体クラツチ１６の油出口の油温が所定値t2よ
りも低いか否かを判別する。油温が所定値t2より
も高い場合は、P13で警報器３０を鳴らし、P14
でバイパス弁１０を開いて回収タービン１２を停
止する。 If the oil pressure in P11 is higher than the predetermined value p1, P12
It is determined whether the oil temperature at the oil outlet of the fluid clutch 16 is lower than a predetermined value t2. If the oil temperature is higher than the predetermined value t2, the alarm 30 will sound in P13, and the alarm 30 will sound in P14.
The bypass valve 10 is opened to stop the recovery turbine 12.
P12で油温が所定値t2よりも低い場合は、P15
でバイパス弁１０を閉じ、回収タービン１２を駆
動する。 If the oil temperature is lower than the predetermined value t2 at P12, P15
The bypass valve 10 is closed and the recovery turbine 12 is driven.
［考案の効果］
本考案は上述のように、ターボ過給機のタービ
ンの出口と回収タービンの入口との間にバイパス
弁を接続し、回収タービンの軸と機関のクランク
軸とを連結する流体クラツチの油入口に油圧セン
サを、油出口に油温センサをそれぞれ配設し、油
圧センサと油温センサの検出信号に基づき、流体
クラツチの油入口の油圧が所定値以下の時、油出
口の油温が所定値以上の時、それぞれバイパス弁
を開く出力信号を発生する電子制御装置を備えた
ものであるから、次のような効果が得られる。[Effects of the invention] As described above, the present invention connects a bypass valve between the outlet of the turbine of the turbocharger and the inlet of the recovery turbine, and connects the shaft of the recovery turbine with the crankshaft of the engine. An oil pressure sensor is installed at the oil inlet of the clutch, and an oil temperature sensor is installed at the oil outlet. Based on the detection signals of the oil pressure sensor and the oil temperature sensor, when the oil pressure at the oil inlet of the fluid clutch is below a predetermined value, the oil pressure at the oil outlet is Since the system is equipped with an electronic control device that generates an output signal to open the bypass valve when the oil temperature is above a predetermined value, the following effects can be obtained.
回収タービンの動力を機関のクランク軸へ伝達
する流体クラツチの油圧と油温に基づき、ターボ
過給機と回収タービンとの間に配設したバイパス
弁を制御するものであり、制御機構の構成が簡単
であり、流体クラツチの異常運転を確実に防止で
きる。 The bypass valve installed between the turbocharger and the recovery turbine is controlled based on the oil pressure and oil temperature of the fluid clutch that transmits the power of the recovery turbine to the engine crankshaft.The configuration of the control mechanism is as follows: It is simple and can reliably prevent abnormal operation of the fluid clutch.
油ポンプの故障などにより流体クラツチへ油が
供給されなくなつた場合に、バイパス弁を開き、
ターボ過給機を通過した排気をバイパスし、回収
タービンと流体クラツチの運転を停止するので、
流体クラツチの破損を防止できる。 If oil is not supplied to the fluid clutch due to oil pump failure, etc., open the bypass valve and
The exhaust gas that has passed through the turbocharger is bypassed and the operation of the recovery turbine and fluid clutch is stopped.
Damage to the fluid clutch can be prevented.
流体クラツチの油出口の油温が異常に高くなつ
た場合に、同様にバイパス弁を開き、回収タービ
ンと流体クラツチの運転を停止するので、流体ク
ラツチの破損を防止できる。 If the oil temperature at the oil outlet of the fluid clutch becomes abnormally high, the bypass valve is similarly opened and the operation of the recovery turbine and fluid clutch is stopped, thereby preventing damage to the fluid clutch.
第１図は本考案に係るターボコンパウンド機関
の概略構成図、第２図はバイパス弁をマイクロコ
ンピユータで作動させる制御プログラムの流れ図
である。
２……内燃機関、４……排気管、５……ターボ
過給機、８……タービン、９……接続管、１０…
…バイパス弁、１２……回収タービン、１４……
遊星歯車減速機、１６……流体クラツチ、１８…
…減速機、１９……クランク軸、２５……一方向
クラツチ、２８……油温センサ、３６……電子制
御装置、３７……油圧センサ。
FIG. 1 is a schematic configuration diagram of a turbo compound engine according to the present invention, and FIG. 2 is a flowchart of a control program for operating a bypass valve by a microcomputer. 2... Internal combustion engine, 4... Exhaust pipe, 5... Turbo supercharger, 8... Turbine, 9... Connection pipe, 10...
...Bypass valve, 12...Recovery turbine, 14...
Planetary gear reducer, 16...Fluid clutch, 18...
...reducer, 19...crankshaft, 25...one-way clutch, 28...oil temperature sensor, 36...electronic control unit, 37...oil pressure sensor.
Claims (1)
の入口との間にバイパス弁を接続し、回収タービ
ンの軸と機関のクランク軸とを連結する流体クラ
ツチの油入口に油圧センサを、油出口に油温セン
サをそれぞれ配設し、油圧センサと油温センサの
検出信号に基づき、流体クラツチの油入口の油圧
が所定値以下の時、油出口の油温が所定値以上の
時、それぞれバイパス弁を開く出力信号を発生す
る電子制御装置を備えたことを特徴とする、ター
ボコンパウンド機関。 A bypass valve is connected between the outlet of the turbocharger turbine and the inlet of the recovery turbine, and an oil pressure sensor is installed at the oil inlet of the fluid clutch that connects the shaft of the recovery turbine and the engine crankshaft, and an oil pressure sensor is installed at the oil outlet. Temperature sensors are respectively installed, and based on the detection signals from the oil pressure sensor and oil temperature sensor, the bypass valves are activated when the oil pressure at the oil inlet of the fluid clutch is below a predetermined value and when the oil temperature at the oil outlet is above a predetermined value. A turbo compound engine characterized in that it is equipped with an electronic control device that generates an opening output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986160776U JPH0526265Y2 (en) | 1986-10-20 | 1986-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986160776U JPH0526265Y2 (en) | 1986-10-20 | 1986-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6365822U JPS6365822U (en) | 1988-04-30 |
| JPH0526265Y2 true JPH0526265Y2 (en) | 1993-07-02 |
Family
ID=31086474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986160776U Expired - Lifetime JPH0526265Y2 (en) | 1986-10-20 | 1986-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526265Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5572925A (en) * | 1978-11-24 | 1980-06-02 | Hitachi Ltd | Control device for working oil temperature of hydraulic joint |
| JPS6119639B2 (en) * | 1980-04-08 | 1986-05-17 | Synthelabo |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53162204U (en) * | 1977-05-27 | 1978-12-19 | ||
| JPS6119639U (en) * | 1984-07-09 | 1986-02-04 | ダイハツ工業株式会社 | Safety device for internal combustion engine with exhaust turbocharger |
-
1986
- 1986-10-20 JP JP1986160776U patent/JPH0526265Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5572925A (en) * | 1978-11-24 | 1980-06-02 | Hitachi Ltd | Control device for working oil temperature of hydraulic joint |
| JPS6119639B2 (en) * | 1980-04-08 | 1986-05-17 | Synthelabo |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6365822U (en) | 1988-04-30 |
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