JPH02108809A - Power transmission for turbo compound engine - Google Patents

Power transmission for turbo compound engine

Info

Publication number
JPH02108809A
JPH02108809A JP63259305A JP25930588A JPH02108809A JP H02108809 A JPH02108809 A JP H02108809A JP 63259305 A JP63259305 A JP 63259305A JP 25930588 A JP25930588 A JP 25930588A JP H02108809 A JPH02108809 A JP H02108809A
Authority
JP
Japan
Prior art keywords
power
pulley
way clutch
transmitted
heat recovery
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
JP63259305A
Other languages
Japanese (ja)
Inventor
Hidetada Fukushima
英忠 福島
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP63259305A priority Critical patent/JPH02108809A/en
Publication of JPH02108809A publication Critical patent/JPH02108809A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Supercharger (AREA)

Abstract

PURPOSE:To improve the low load performance and the acceleration responsiveness of a turbo compound engine by releasing an one-way clutch provided in a power transmission, so that the rotation of a exhaust heat recovery turbine may be arranged to be not transmitted to a crank shaft at the time of a low load and acceleration. CONSTITUTION:An exhaust heat recovery turbine 3 is operated by the exhaust gas from a turbine 1a driven by exhaust gas in a supercharger 1, and after the power is decelerated by a deceleration gear train 4, the recovered power is transmitted to a driving shaft 21. In this occasion, a one-way clutch 22 and a pulley 5 are set on the driving shaft 21. When the power is transmitted by the one-way clutch 22, rotation is transmitted to a driving pulley 23 which is coupled to a pulley 17 fixed on a crank shaft 12 through a rubber belt 24. Further, a pulley 5 fixed on the driving shaft 21 is coupled to a pulley 8 for auxiliary machines through a V belt 7, so that a cooling fan 9 and a cooling water 10 are operated.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、ターボコンパウンド機関の動力伝達装置に
係り、排熱回収タービンの発生する動力により冷却系機
器を駆動するとともに、ゴムベルトにより動力をクラン
ク軸に伝えて1機関の出力を増大させるようにした。タ
ーボコンパウンド機関の動力伝達装置に関するものであ
る。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to a power transmission device for a turbo compound engine, in which the power generated by an exhaust heat recovery turbine drives cooling system equipment, and the power is transmitted to a crank by a rubber belt. The output of one engine was increased by transmitting it to the shaft. This relates to a power transmission device for a turbo compound engine.

(従来の技術) 従来のものはFJ¥熱回収タービンの発生する動力を通
常の流体継手を介してクランク軸に伝え。
(Prior art) In the conventional technology, the power generated by the FJ heat recovery turbine is transmitted to the crankshaft via a normal fluid coupling.

機関の出力を増大させるものが用いられてきた。Those that increase the output of the engine have been used.

また排熱回収タービンの動力により冷却系機器を駆動す
ると共に、クランク軸への動力の伝達を遮断することの
できる流体継手を用いたものを本出願人はさきに特願昭
63−85293号として提案した。
In addition, the present applicant has previously proposed a device using a fluid coupling that can drive cooling system equipment using the power of the exhaust heat recovery turbine and cut off the transmission of power to the crankshaft, as filed in Japanese Patent Application No. 85293/1983. Proposed.

(発明が解決しようとする課題) 前記従来のものは2通常の流体継手を用いるものにあっ
ては5機関の低負荷時及び加速時において、排気ガス温
度が低いために排熱回収タービンに与えられるエネルギ
が不足し、排熱回収タービンは流体継手を介して機関に
より駆動されることになる。このために機関は無効仕事
を行なうことになり、燃料消費量が増大し、なお且つ加
速性を悪くすると云う不具合な点がある。
(Problems to be Solved by the Invention) In the above-mentioned conventional system, 2) In the case of a system using a normal fluid coupling, 5) During low load and acceleration of the engine, the exhaust gas temperature is low, so that the exhaust gas is not given to the exhaust heat recovery turbine. The exhaust heat recovery turbine is driven by the engine via a fluid coupling. As a result, the engine performs ineffective work, resulting in increased fuel consumption and poor acceleration.

また前記特願昭63−85293号のクランク軸への動
力の伝達を遮断することのできる流体継手を用いるもの
にあっては、排熱エネルギの有効な活用をはかることが
できるが1反面流体継手及び遮断装置等によるコストの
増大をまねき。
Furthermore, in the case of the above-mentioned Japanese Patent Application No. 63-85293, which uses a fluid coupling that can cut off the transmission of power to the crankshaft, it is possible to effectively utilize waste heat energy. This also leads to increased costs due to the use of shutoff devices, etc.

なお且つ既存の機関を改造することが簡単に行なえない
と云うような不具合がある。
Furthermore, there is a problem that it is not easy to modify the existing engine.

この発明は上記の不具合を解消することを課題とするも
のである。
It is an object of the present invention to solve the above-mentioned problems.

(課題を解決するための手段及び作用)この発明は上記
の点に鑑みなされたものであって、排熱回収タービンの
動力を伝達する減速機の駆動軸に直結されたプーリによ
りベルトを介して駆動される冷却ファン及び冷却水ポン
プと、前記駆動軸に装着されたワンウェイクラ・ノチと
、前記ワンウェイクラッチを介し動力が伝達される駆動
プーリと、前記駆動プーリの動力を伝えるゴムベルトと
、クランク軸に固着され前記ゴムベルトにより動力を伝
達され、クランク軸を回転させるプーリとによって構成
され。
(Means and effects for solving the problem) The present invention has been made in view of the above points, and the present invention has been made in view of the above-mentioned points. A cooling fan and a cooling water pump to be driven, a one-way clutch mounted on the drive shaft, a drive pulley to which power is transmitted via the one-way clutch, a rubber belt to transmit the power of the drive pulley, and a crankshaft. and a pulley that is fixed to the rubber belt and receives power from the rubber belt to rotate the crankshaft.

簡単な構造を用いて1機関の低負荷時及び加速時におい
て、ワンウェイクラッチを遮断し、排熱回収タービンの
回転がクランク軸に伝達されないようにして、ターボコ
ンパウンド機関の低負荷性能及び加速応答性の改善をは
かると共に。
Using a simple structure, the one-way clutch is disconnected during low load and acceleration of one engine, preventing the rotation of the exhaust heat recovery turbine from being transmitted to the crankshaft, improving the low load performance and acceleration response of the turbo compound engine. In addition to improving the

クランク軸のねじり振動は、ゴムベルトにより減衰させ
排熱回収タービンへ伝えないようにして、排熱回収ター
ビンの信顛性及び耐久性を向上さセるものである。
The torsional vibration of the crankshaft is attenuated by the rubber belt so that it is not transmitted to the exhaust heat recovery turbine, thereby improving the reliability and durability of the exhaust heat recovery turbine.

(実施例) 次にこの発明の実施例を図面に基づいて説明する。第1
図はこの発明の一実施例の構造図第2図はワンウェイク
ラッチの第1実施例の断面図、第3図はワンウェイクラ
ッチの第2実施例の断面図を示す。
(Example) Next, an example of the present invention will be described based on the drawings. 1st
FIG. 2 is a sectional view of a first embodiment of a one-way clutch, and FIG. 3 is a sectional view of a second embodiment of a one-way clutch.

第1図において1は過給機を示し、該過給機lは排気ガ
スにより駆動されるタービン1aと。
In FIG. 1, 1 indicates a supercharger, and the supercharger 1 has a turbine 1a driven by exhaust gas.

前記タービンlaと同軸上で回転し、吸入空気を加圧し
1機関2に供給するプロワlbとによって構成される。
The blower lb rotates coaxially with the turbine la and pressurizes intake air and supplies it to the engine 2.

タービンlaの排気は排熱回収タービン3を作動させて
、排気中の排熱エネルギ動力として回収される。該排熱
回収タービン3は。
The exhaust gas from the turbine la operates the exhaust heat recovery turbine 3, and the exhaust heat energy in the exhaust gas is recovered as power. The exhaust heat recovery turbine 3 is.

回転を減速歯車列4により減速され、駆動軸21に回収
した動力を伝達する。駆動軸21の軸上にワンウェイク
ラッチ22及びプーリ5が装着されている。ワンウェイ
クラッチ22は動力伝達時に駆動プーリ23に回転を伝
達し、該駆動プーリ23はゴムヘルド24を介してクラ
ンク軸12に固着されたプーリ17を駆動し、クランク
軸12に対して動力を伝達する。駆動軸21に直接固着
されたプーリ5は5通常Vベルト7を介して、補機用の
プーリ8を駆動し、該プーリ8に直結される冷却ファン
9及び冷却水ポンプ10を作動させる。
The rotation is reduced by the reduction gear train 4, and the recovered power is transmitted to the drive shaft 21. A one-way clutch 22 and a pulley 5 are mounted on the drive shaft 21. The one-way clutch 22 transmits rotation to a drive pulley 23 during power transmission, and the drive pulley 23 drives a pulley 17 fixed to the crankshaft 12 via a rubber heald 24, thereby transmitting power to the crankshaft 12. The pulley 5, which is directly fixed to the drive shaft 21, drives an auxiliary pulley 8 through a V-belt 7, and operates a cooling fan 9 and a cooling water pump 10, which are directly connected to the pulley 8.

排熱回収タービン3により回収された動力は駆動軸21
に伝えられ、プーリ比により換算されたクランク軸I2
の回転数が、駆動軸21の回転数より低い場合には、ワ
ンウェイクラッチ22が接続されて、ゴムヘルド24を
介してクランク軸12に伝達され、プーリ比により換算
されたクランク軸12の回転数が、駆動軸21の回転数
より高い場合にはワンウェイクラッチ22は遮断され、
動力はクランク軸12に伝達されない。
The power recovered by the exhaust heat recovery turbine 3 is transferred to the drive shaft 21
and the crankshaft I2 converted by the pulley ratio
When the rotation speed of the drive shaft 21 is lower than the rotation speed of the drive shaft 21, the one-way clutch 22 is connected, and the rotation speed of the crankshaft 12 converted by the pulley ratio is transmitted to the crankshaft 12 via the rubber heald 24. , the one-way clutch 22 is disconnected when the rotation speed is higher than the rotation speed of the drive shaft 21,
Power is not transmitted to the crankshaft 12.

従って機関が低負荷領域にあって排気ガス温度が低い状
態では排熱回収タービン3の回転数が低いため、ワンウ
ェイクラッチ22は遮断状態となり、排熱回収タービン
3によるクランク軸12に対する動力伝達は行なわれな
い。
Therefore, when the engine is in a low load region and the exhaust gas temperature is low, the rotation speed of the exhaust heat recovery turbine 3 is low, so the one-way clutch 22 is disconnected, and power is not transmitted to the crankshaft 12 by the exhaust heat recovery turbine 3. Not possible.

又加速段階においては排熱回収タービン3の加速遅れが
あるので8機関回転数に対して、排熱回収タービン3の
回転数が低いため、ワンウェイクラッチ22は遮断状態
となり、動力伝達が行なわれず、排熱回収タービン3が
負荷となって機関の加速が阻害されることがない。
In addition, in the acceleration stage, there is an acceleration delay of the exhaust heat recovery turbine 3, so the rotation speed of the exhaust heat recovery turbine 3 is lower than the engine rotation speed, so the one-way clutch 22 is in a disconnected state, and no power is transmitted. The exhaust heat recovery turbine 3 does not become a load and the acceleration of the engine is not inhibited.

第2図はワンウェイクラッチの装着構造を示しており、
駆動軸21に固着された中間軸21aにワンウェイクラ
ッチ22が嵌着され、該ワンウェイクラソチ22を介し
て駆動プーリ23に動力が伝達される。
Figure 2 shows the mounting structure of the one-way clutch.
A one-way clutch 22 is fitted to an intermediate shaft 21a fixed to the drive shaft 21, and power is transmitted to the drive pulley 23 via the one-way clutch 22.

第3図は第2図と異なるワンウェイクラッチの装着構造
を示しており、駆動軸21にワンウェイクラッチ22が
直接装着され、駆動プーリ23は中空軸23aを介して
動力が伝達されるようになっている。
FIG. 3 shows a one-way clutch mounting structure different from that in FIG. 2, in which the one-way clutch 22 is directly mounted on the drive shaft 21, and power is transmitted to the drive pulley 23 via a hollow shaft 23a. There is.

上記実施例のワンウェイクラッチは市販されているスプ
ラグタイプのものが使用され、クランク軸への動力伝達
に用いられるゴムベルトはりブトタイプのものが使用さ
れたが、いずれもfi (IIの同機能のものを用いる
ことができる。
The one-way clutches used in the above embodiments were of the commercially available sprag type, and rubber belt type buttocks used to transmit power to the crankshaft. Can be used.

以上のようにこの発明の実施例のものは、排熱回収ター
ビンのクランク軸への動力伝達を機関の低負荷時及び加
速時においてワンウェイクラ・ツチを遮断するようにし
て、ターボコンパウンド機関の性能改善をはかったもの
である。
As described above, the embodiments of the present invention cut off the one-way transmission of power to the crankshaft of the exhaust heat recovery turbine when the engine is under low load and during acceleration, thereby improving the performance of the turbo compound engine. This is an improvement.

(発明の効果) この発明は以上述べたようにして成り、動力伝達装置に
設けられたワンウェイクラッチの遮断により、Ja関の
低負荷時及び加速時において。
(Effects of the Invention) The present invention is constructed as described above, and the one-way clutch provided in the power transmission device is disengaged during low load and acceleration.

IJI−熱回収タービンの回転がクランク軸に伝達され
ないようにして、ターボコンパウンド機関の低負荷性能
及び加速応答性の改善をはかることができる。
By preventing the rotation of the IJI heat recovery turbine from being transmitted to the crankshaft, it is possible to improve the low-load performance and acceleration response of the turbo compound engine.

又従来の流体継手を用いる方式に代えてワンウェイクラ
ッチとブーり及びゴムベルトによる伝達機構を用いてい
るので、構造が簡単となりコストを低減することができ
る。さらにこの発明はプーリ等を交換するのみで、どの
ような機関にも装着可能なADD−ON構造となるため
車載された機関にも小改造で追加装着することができる
Furthermore, since a transmission mechanism using a one-way clutch, a boob, and a rubber belt is used instead of the conventional system using a fluid coupling, the structure is simple and costs can be reduced. Furthermore, this invention has an ADD-ON structure that can be installed on any engine by simply replacing pulleys, etc., so it can be additionally installed on an engine mounted on a vehicle with minor modification.

【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造図、第2図はワンウ
ェイクラッチの装着構造に関する第1実施例の断面図、
第3図はワンウェイクラッチの装着構造に関する第2実
施例の断面図である。 2・・・機関、     3・・・排熱タービン4・・
・減速機。 7・・・ベルト。 9・・・冷却ファン。 12・・・駆動軸。 21・・・駆動軸。 23・・・駆動プーリ。 5・・・プーリ。 8・・・プーリ。 io、・・・冷却水ポンプ 17・・・プーリ。 22・・・ワンウェイクラッチ。 24・・・ゴムベルト。 特許出廓人 代  理  人 株式会社 小松製作所 (弁理士)松 澤  統 第1図
Fig. 1 is a structural diagram of one embodiment of the present invention, Fig. 2 is a sectional view of the first embodiment regarding the mounting structure of a one-way clutch,
FIG. 3 is a sectional view of a second embodiment of the one-way clutch mounting structure. 2... Engine, 3... Exhaust heat turbine 4...
·Decelerator. 7...Belt. 9...Cooling fan. 12... Drive shaft. 21... Drive shaft. 23... Drive pulley. 5...Pulley. 8...Pulley. io,...Cooling water pump 17...Pulley. 22...One-way clutch. 24...Rubber belt. Patent agent: Rihito Komatsu Ltd. (patent attorney) Osamu Matsuzawa Figure 1

Claims (1)

【特許請求の範囲】[Claims] 排熱回収タービンにより冷却系機器及びクランク軸を駆
動するターボコンパウンド機関において、該排熱回収タ
ービンの動力を伝達する減速機の駆動軸に直結されたプ
ーリによりベルトを介して駆動される冷却ファンおよび
冷却水ポンプと、前記駆動軸に装着されたワンウェイク
ラッチと、前記ワンウェイクラッチを介して動力が伝達
される駆動プーリと、前記駆動プーリの動力を伝えるゴ
ムヘルドと、クランク軸に固着され前記ゴムベルトによ
り動力を伝達されクランク軸を回転させるプーリを具備
して成る、ターボコンパウンド機関の動力伝達装置。
In a turbo compound engine in which an exhaust heat recovery turbine drives cooling system equipment and a crankshaft, a cooling fan is driven via a belt by a pulley directly connected to a drive shaft of a reducer that transmits power of the exhaust heat recovery turbine; A cooling water pump, a one-way clutch attached to the drive shaft, a drive pulley to which power is transmitted via the one-way clutch, a rubber heald that transmits the power of the drive pulley, and a rubber belt fixed to the crankshaft to transmit the power. A power transmission device for a turbo compound engine that is equipped with a pulley that transmits the power and rotates the crankshaft.
JP63259305A 1988-10-17 1988-10-17 Power transmission for turbo compound engine Pending JPH02108809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63259305A JPH02108809A (en) 1988-10-17 1988-10-17 Power transmission for turbo compound engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63259305A JPH02108809A (en) 1988-10-17 1988-10-17 Power transmission for turbo compound engine

Publications (1)

Publication Number Publication Date
JPH02108809A true JPH02108809A (en) 1990-04-20

Family

ID=17332230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63259305A Pending JPH02108809A (en) 1988-10-17 1988-10-17 Power transmission for turbo compound engine

Country Status (1)

Country Link
JP (1) JPH02108809A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007231857A (en) * 2006-03-01 2007-09-13 Toyota Motor Corp Exhaust heat recovery system
JP2008157451A (en) * 2006-12-19 2008-07-10 Hispano Suiza Gear with integral overcouple protection
KR101029435B1 (en) * 2010-11-26 2011-04-14 김동욱 Power transmission device of fuel reduction by recycle exhaust-gas of automobile

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007231857A (en) * 2006-03-01 2007-09-13 Toyota Motor Corp Exhaust heat recovery system
US8250869B2 (en) 2006-03-01 2012-08-28 Toyota Jidosha Kabushiki Kaisha Exhaust heat recovery apparatus
JP2008157451A (en) * 2006-12-19 2008-07-10 Hispano Suiza Gear with integral overcouple protection
KR101029435B1 (en) * 2010-11-26 2011-04-14 김동욱 Power transmission device of fuel reduction by recycle exhaust-gas of automobile
WO2012070773A1 (en) * 2010-11-26 2012-05-31 Kim Dong Wook Fuel-saving power-transmitting apparatus that reuses exhaust gas from a vehicle

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