JPH04111529U - Water-cooled turbocharger for marine engines - Google Patents
Water-cooled turbocharger for marine enginesInfo
- Publication number
- JPH04111529U JPH04111529U JP2229391U JP2229391U JPH04111529U JP H04111529 U JPH04111529 U JP H04111529U JP 2229391 U JP2229391 U JP 2229391U JP 2229391 U JP2229391 U JP 2229391U JP H04111529 U JPH04111529 U JP H04111529U
- Authority
- JP
- Japan
- Prior art keywords
- seawater
- pipe
- cooling water
- engine
- water passage
- 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
Links
- 239000013535 sea water Substances 0.000 claims abstract description 57
- 239000000498 cooling water Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Abstract
(57)【要約】
【目的】 低速・低負荷時のターボ効率を向上させ、高
速・高負荷時のタービンハウジングの表面温度を確実に
低減する。
【構成】 タービンハウジング１２の外周に設けられた
冷却水通路１３を迂回するバイパス管１９を海水冷却系
１５の第１海水管２１及び第２海水管２２に接続し、第
１海水管２１とバイパス管１９の分岐点に切換弁２３を
設ける。回転センサ２４、負荷センサ２６及び水温セン
サ２７の検出信号に基づいてコントローラ２９が第１海
水管２１を冷却水通路１３又はバイパス管１９に連通す
るように切換弁２３を切換える。
(57) [Summary] [Purpose] To improve turbo efficiency at low speeds and low loads, and to reliably reduce the surface temperature of the turbine housing at high speeds and high loads. [Structure] A bypass pipe 19 that bypasses the cooling water passage 13 provided on the outer periphery of the turbine housing 12 is connected to the first seawater pipe 21 and the second seawater pipe 22 of the seawater cooling system 15, and the bypass pipe 19 is connected to the first seawater pipe 21 and the second seawater pipe 22 of the seawater cooling system 15. A switching valve 23 is provided at a branch point of the pipe 19. Based on detection signals from the rotation sensor 24, load sensor 26, and water temperature sensor 27, the controller 29 switches the switching valve 23 so that the first seawater pipe 21 communicates with the cooling water passage 13 or the bypass pipe 19.
Description
【０００１】0001
本考案はマリンエンジンの水冷式ターボ過給機に関する。更に詳しくはタービ ンに導入されるエンジンの排気温度を最適にする水冷式ターボ過給機に関するも のである。 The present invention relates to a water-cooled turbo supercharger for a marine engine. For more information, please visit Turbi Regarding the water-cooled turbo supercharger that optimizes the exhaust temperature of the engine installed in the engine. It is.
【０００２】0002
この種のターボ過給機は、エンジンの排気のエネルギにより駆動されるタービ ンと同軸にあるブロアにより空気の密度を高めて、これをエンジンのシリンダ内 に送り込んでいる。 船用エンジンにあっては、エンジンの露出する高温部は安全対策上冷却しなけ ればならず、このため過給機のタービンハウジングの外周にはエンジンの冷却水 が通過する冷却水通路が設けられている。この冷却水は清水であり、エンジンの 回転時には常に冷却水通路を流れてタービンハウジングを冷却している。 This type of turbocharger is a turbocharger that is driven by the energy of the engine's exhaust gas. A blower located coaxially with the engine increases the density of the air and moves it into the engine cylinder. is being sent to. For marine engines, exposed high-temperature parts of the engine must be cooled for safety reasons. Therefore, the engine cooling water must be placed around the outer circumference of the turbocharger turbine housing. A cooling water passage is provided through which the water passes. This cooling water is fresh water and is used for the engine. When the turbine rotates, water constantly flows through the cooling water passage to cool the turbine housing.
【０００３】0003
しかし、上記のように常にタービンハウジングの冷却水通路に冷却水を流すと 、高速・高負荷時でのターボ効率のマッチングを主体にターボ過給機を製作せざ るを得ず、低速・低負荷時でのエンジンの排気温度が下がり過ぎてエンジンの吸 気量が不足し、ターボ効率が低下する不具合があった。 また冷却水通路を通過する冷却水としてシリンダヘッド等を循環するエンジン の冷却水を用いるため、高速・高負荷時の冷却水は熱交換器で冷却しきれずその 温度が高くなり、この冷却水では高速・高負荷時でのタービンハウジングの表面 温度を十分に低減できない問題点があった。 However, if the cooling water is always flowing through the cooling water passage of the turbine housing as described above, , we are developing a turbo supercharger with a focus on matching turbo efficiency at high speeds and high loads. Unavoidably, the exhaust temperature of the engine at low speeds and low loads drops too much, causing engine suction. There was a problem that the air volume was insufficient and the turbo efficiency decreased. In addition, the engine circulates the cylinder head etc. as cooling water passing through the cooling water passage. During high-speed and high-load operation, the cooling water cannot be cooled completely by the heat exchanger, resulting in As the temperature increases, this cooling water will cause damage to the surface of the turbine housing at high speeds and high loads. There was a problem that the temperature could not be reduced sufficiently.
【０００４】 本考案の目的は、低速・低負荷時のターボ効率を向上させ、高速・高負荷時の タービンハウジングの表面温度を確実に低減することのできるマリンエンジンの 水冷式ターボ過給機を提供することにある。0004 The purpose of this invention is to improve turbo efficiency at low speeds and low loads, and improve turbo efficiency at high speeds and high loads. A marine engine that can reliably reduce the surface temperature of the turbine housing. Our objective is to provide a water-cooled turbocharger.
【０００５】[0005]
上記目的を達成するための本考案の構成を、実施例に対応する図１を用いて説 明する。 本考案は、エンジンの排気のエネルギにより駆動されるタービンがタービンハ ウジング１２により被包され、このタービンハウジングの外周に冷却水が通過す る冷却水通路１３が設けられたマリンエンジンの水冷式ターボ過給機の改良であ る。 その特徴ある構成は、冷却水通路１３の入口１３ａに接続された海水冷却系１ ５の第１海水管２１と、冷却水通路１３の出口１３ｂに接続された海水冷却系１ ５の第２海水管２２と、一端が第１海水管２１から分岐し他端が第２海水管２２ に合流して接続されたバイパス管１９と、第１海水管２１とバイパス管１９の分 岐点に設けられ第１海水管２１を冷却水通路１３又はバイパス管１９に連通する ように切換え可能な切換弁２３と、エンジンの回転速度を検出する回転センサ２ ４と、エンジンの負荷を検出する負荷センサ２６と、冷却水の温度を検出する水 温センサ２７と、回転センサ２４、負荷センサ２６及び水温センサ２７の各検出 信号に基づいて切換弁２３を切換えるコントローラ２９とを備えたところにある 。 The configuration of the present invention to achieve the above object will be explained using FIG. 1 corresponding to the embodiment. I will clarify. In this invention, the turbine is driven by the energy of the engine exhaust gas. It is enclosed by housing 12, and the cooling water passes through the outer circumference of this turbine housing. This is an improvement of a water-cooled turbo supercharger for a marine engine that is equipped with a cooling water passage 13. Ru. Its characteristic configuration is that the seawater cooling system 1 is connected to the inlet 13a of the cooling water passage 13. The seawater cooling system 1 is connected to the first seawater pipe 21 of No. 5 and the outlet 13b of the cooling water passage 13. 5, the second seawater pipe 22 has one end branched from the first seawater pipe 21 and the other end is the second seawater pipe 22. Bypass pipe 19 that merges and is connected to the first seawater pipe 21 and bypass pipe 19 Provided at the junction point and communicates the first seawater pipe 21 with the cooling water passage 13 or the bypass pipe 19 A switching valve 23 that can be switched as shown in FIG. 4, a load sensor 26 that detects the engine load, and a water sensor 26 that detects the temperature of the cooling water. Detection of temperature sensor 27, rotation sensor 24, load sensor 26, and water temperature sensor 27 The controller 29 switches the switching valve 23 based on the signal. .
【０００６】[0006]
コントローラ２９はエンジンの低速・低負荷時では切換弁２３を第１海水管２ １とバイパス管１９とを連通するように切換え、高速・高負荷時では切換弁２３ を第１海水管２１と冷却水通路１３とを連通するように切換える。 The controller 29 switches the switching valve 23 to the first seawater pipe 2 when the engine is at low speed and low load. 1 and the bypass pipe 19, and at high speeds and high loads, the switching valve 23 is switched so that the first seawater pipe 21 and the cooling water passage 13 are communicated with each other.
【０００７】[0007]
次に本考案の一実施例を図面に基づいて詳しく説明する。 図１及び図２に示すように、１０はマリンエンジンであって、その排気系にタ ーボ過給機１１を備える。この過給機１１のタービンハウジング１２の外周には エンジン１０の冷却水が通過する冷却水通路１３が設けられる。 冷却水通路１３はその入口１３ａがタービンハウジング１２の下縁に、その出 口１３ｂがタービンハウジング１２の上縁にそれぞれ設けられ、冷却水は冷却水 通路１３を図１の実線矢印の方向に流れる。 Next, one embodiment of the present invention will be described in detail based on the drawings. As shown in FIGS. 1 and 2, 10 is a marine engine, and its exhaust system is equipped with a The turbocharger 11 is provided. On the outer periphery of the turbine housing 12 of this supercharger 11, A cooling water passage 13 is provided through which cooling water for the engine 10 passes. The cooling water passage 13 has an inlet 13a located at the lower edge of the turbine housing 12, and an outlet thereof. The ports 13b are provided at the upper edge of the turbine housing 12, and the cooling water is It flows through the passage 13 in the direction of the solid arrow in FIG.
【０００８】 冷却水通路１３を通過する冷却水は海水であり、この海水は図示しないストレ ーナ、海水取入弁及び海水フィルタを介して海水ポンプ１４により海から吸上げ られ、海水冷却系１５を構成するインタクーラ１６、マリンギヤ・オイルクーラ １７、タービンハウジング１２の冷却水通路１３及び熱交換器１８に送出された 後に海に排出されるようになっている。オイルクーラ１７の海水出口１７ａ（図 ２）は第１海水管２１により冷却水通路１３の入口１３ａ（図１）に接続され、 冷却水通路１３の出口１３ｂ（図１）は第２海水管２２により熱交換器１８の海 水流入口１８ａ（図２）に接続される。 また一端が第１海水管２１から分岐し他端が第２海水管２２に合流するバイパ ス管１９が冷却水通路１３を迂回して接続され、第１海水管２１とバイパス管１ ９の分岐点には切換弁２３が設けられる。この切換弁はスプリングリターン式の ３方切換電磁弁であり、この切換弁２３をオンすると第１海水管２１を冷却水通 路１３に連通し、オフすると第１海水管２１をバイパス管１９に連通するように 切換わる。[0008] The cooling water passing through the cooling water passage 13 is seawater, and this seawater passes through a strainer (not shown). The seawater is sucked up from the sea by the seawater pump 14 through the seawater intake valve and seawater filter. intercooler 16 and marine gear oil cooler that constitute the seawater cooling system 15. 17, sent to the cooling water passage 13 of the turbine housing 12 and the heat exchanger 18 It is then discharged into the sea. Seawater outlet 17a of oil cooler 17 (Fig. 2) is connected to the inlet 13a (FIG. 1) of the cooling water passage 13 by the first seawater pipe 21, The outlet 13b (FIG. 1) of the cooling water passage 13 is connected to the sea of the heat exchanger 18 by the second sea water pipe 22. It is connected to the water inlet 18a (FIG. 2). Also, there is a bypass whose one end branches from the first seawater pipe 21 and the other end joins the second seawater pipe 22. The first seawater pipe 21 and the bypass pipe 1 are connected to each other by bypassing the cooling water passage 13. A switching valve 23 is provided at the branch point 9. This switching valve is a spring return type. It is a three-way switching solenoid valve, and when this switching valve 23 is turned on, cooling water is passed through the first seawater pipe 21. 13, and when turned off, connects the first seawater pipe 21 to the bypass pipe 19. Switch.
【０００９】 エンジンのクランク軸（図示せず）にはその回転速度を検出する回転センサ２ ４が設けられ、燃料噴射ポンプのコントロールレバー（図示せず）にはエンジン の負荷を検出する負荷センサ２６が設けられる。また冷却水通路１３の出口１３ ｂには水温センサ２７が設けられ、タービン入口１２ａにはエンジン排気の温度 を検出する排気温センサ２８が設けられる。 回転センサ２４、負荷センサ２６、水温センサ２７及び排気温センサ２８の検 出出力はコントローラ２９の制御入力に接続され、コントローラ２９の制御出力 は切換弁２３に接続される（図１）。コントローラ２９のメモリには図３に示す 制御マップが記憶され、コントローラ２９はエンジンの運転状態に応じて切換弁 ２３をオンオフするようになっている。図３は航走負荷（プロペラロード）時の エンジン回転速度に対するエンジン負荷と切換弁２３のオンオフとの関係を示す 。またコントローラ２９のメモリには水温センサ２７の検出値Ｔ及び排気温セン サ２８の検出値ｔとを比較する所定の値Ｔ1及びｔ1がそれぞれ記憶される。[0009] The engine crankshaft (not shown) is provided with a rotation sensor 24 that detects its rotational speed, and the fuel injection pump control lever (not shown) is provided with a load sensor 26 that detects the engine load. will be provided. Further, a water temperature sensor 27 is provided at the outlet 13b of the cooling water passage 13, and an exhaust temperature sensor 28 for detecting the temperature of engine exhaust gas is provided at the turbine inlet 12a. The detection outputs of the rotation sensor 24, load sensor 26, water temperature sensor 27, and exhaust temperature sensor 28 are connected to a control input of a controller 29, and the control output of the controller 29 is connected to the switching valve 23 (FIG. 1). A control map shown in FIG. 3 is stored in the memory of the controller 29, and the controller 29 turns the switching valve 23 on and off according to the operating state of the engine. FIG. 3 shows the relationship between the engine load and the on/off state of the switching valve 23 with respect to the engine rotational speed during the cruising load (propeller load). Further, the memory of the controller 29 stores predetermined values T 1 and t 1 for comparing the detection value T of the water temperature sensor 27 and the detection value t of the exhaust temperature sensor 28, respectively.
【００１０】 このように構成されたマリンエンジンの水冷式ターボ過給機の動作を図３に基 づて説明する。 エンジンの回転速度が所定の値Ｎ1以上であって、かつエンジンの負荷が所定 の値Ｌ1以上であるとき、即ち図のの領域の高速・高負荷時では、エンジンの 排気温度が上昇し、タービンハウジング１２の表面温度が上昇する。この状態に なると、コントローラ２９は回転センサ２４及び負荷センサ２６の各検出信号に より切換弁２３をオンして第１海水管２１を冷却水通路１３に連通し、常時低温 の海水を冷却水通路１３に流す。これによりタービンハウジング１２の表面温度 を確実に低下することができる。[0010]The operation of the water-cooled turbocharger for a marine engine configured as described above will be explained based on FIG. When the engine rotational speed is at least a predetermined value N1 and the engine load is at least a predetermined value L1 , that is, at high speeds and high loads in the region shown in the figure, the engine exhaust temperature increases. , the surface temperature of the turbine housing 12 increases. In this state, the controller 29 turns on the switching valve 23 based on the detection signals of the rotation sensor 24 and the load sensor 26, connects the first seawater pipe 21 to the cooling water passage 13, and constantly supplies low-temperature seawater to the cooling water passage 13. flow to. Thereby, the surface temperature of the turbine housing 12 can be reliably lowered.
【００１１】 エンジンの回転速度及び負荷が図のの領域の低速・低負荷時では、コントロ ーラ２９は切換弁２３をオフして第１海水管２１をバイパス管１９に連通し、冷 却水通路１３に海水を流さないようにしてタービンハウジング１２の冷却を停止 する。これによりエンジンの排気の過冷却が防止され、ターボ効率が向上する。 また、エンジンの回転速度及び負荷が図のの領域であっても、水温センサ２７ が所定の温度Ｔ1以上を検出すると、コントローラ２９は回転センサ２４及び負 荷センサ２６の検出値にかかわらずに切換弁２３をオンして海水を冷却水通路１ ３に流すことにより、タービンハウジング１２の表面温度を所定の温度Ｔ1より 下げ、タービンハウジング１２の過熱を防止する。When the engine rotational speed and load are in the region shown in the figure, the controller 29 turns off the switching valve 23 and connects the first seawater pipe 21 to the bypass pipe 19 to connect the cooling water passage 13 with the switching valve 23 . Cooling of the turbine housing 12 is stopped without letting seawater flow. This prevents overcooling of the engine exhaust gas and improves turbo efficiency. Furthermore, even if the engine speed and load are in the range shown in the figure, if the water temperature sensor 27 detects a predetermined temperature T1 or higher, the controller 29 switches the switch regardless of the detected values of the rotation sensor 24 and load sensor 26. By turning on the valve 23 and letting seawater flow into the cooling water passage 13, the surface temperature of the turbine housing 12 is lowered below a predetermined temperature T1 , and overheating of the turbine housing 12 is prevented.
【００１２】 エンジンの回転速度及び負荷が図の及びの領域であって、かつ水温センサ ２７及び排気温センサ２８のいずれか一方又は双方が所定の値Ｔ1及びｔ1以上を 検出したとき、コントローラ２９は切換弁２３をオンして第１海水管２１を冷却 水通路１３に連通し、海水を冷却水通路１３に流す。これによりタービンハウジ ング１２の過熱を防止できる。またエンジンの回転速度及び負荷が図の及び の領域であって、かつ水温センサ２７及び排気温センサ２８の双方が所定の値Ｔ 1 及びｔ1未満を検出したとき、コントローラ２９は切換弁２３をオフして第１海 水管２１をバイパス管１９に連通し、海水を冷却水通路１３に流さないようにし てタービンハウジング１２の冷却を停止する。これによりエンジンの排気の過冷 却が防止され、ターボ効率が向上する。0012 The engine speed and load are in the range of and in the figure, and the water temperature sensor 27 and exhaust temperature sensor 28 or both have a predetermined value T.1and t1more than that When detected, the controller 29 turns on the switching valve 23 to cool the first seawater pipe 21. It communicates with the water passage 13 and allows seawater to flow into the cooling water passage 13. This allows the turbine housing This prevents the ring 12 from overheating. Also, the engine speed and load are as shown in the diagram. , and both the water temperature sensor 27 and the exhaust temperature sensor 28 have a predetermined value T. 1 and t1When the controller 29 turns off the switching valve 23 and switches the first sea The water pipe 21 is connected to the bypass pipe 19 to prevent seawater from flowing into the cooling water passage 13. Then, cooling of the turbine housing 12 is stopped. This results in supercooling of the engine exhaust. This prevents cooling and improves turbo efficiency.
【００１３】 なお、実施例では回転センサ、負荷センサ及び水温センサの他に排気温センサ を挙げたが、これは一例であって回転センサ及び負荷センサの検出値によりター ビンハウジングに導入されるエンジン排気の温度を類推できれば排気温センサは 不要である。 また、実施例ではタービンハウジングの冷却水通路をマリンギヤ・オイルクー ラと熱交換器との間に接続したが、海水冷却系であればこの位置に限定されるも のではない。[0013] In addition, in the example, an exhaust temperature sensor is used in addition to the rotation sensor, load sensor, and water temperature sensor. However, this is just an example, and the target is determined by the detected values of the rotation sensor and load sensor. If the temperature of the engine exhaust introduced into the bin housing can be estimated, the exhaust temperature sensor can be Not necessary. In addition, in the example, the cooling water passage of the turbine housing is connected to the marine gear oil cooler. The connection is between the heat exchanger and the heat exchanger, but if it is a seawater cooling system, it may be limited to this location. It's not.
【００１４】[0014]
以上述べたように、本考案によれば、タービンハウジングの外周に設けられた 冷却水通路を迂回するバイパス管を第１海水管及び第２海水管に接続し、切換弁 を第１海水管とバイパス管の分岐点を設け、回転センサ、負荷センサ及び水温セ ンサの検出信号に基づいてコントローラが第１海水管を冷却水通路又はバイパス 管に連通させるように切換弁を切換えるので、タービン入口のエンジン排気の温 度が下がり過ぎてエンジンの吸気量が不足することはなく、低速・低負荷時のタ ーボ効率を向上させることができる。 またシリンダヘッド等を循環しているエンジンの冷却水ではなく、常時低温に 保たれた海水が冷却水通路を通過するので、高速・高負荷時のタービンハウジン グの表面温度を確実に低減することができる。 As described above, according to the present invention, the Connect the bypass pipe that bypasses the cooling water passage to the first seawater pipe and the second seawater pipe, and connect the switching valve. A branch point between the first seawater pipe and the bypass pipe is installed, and a rotation sensor, load sensor, and water temperature sensor are installed. Based on the detection signal from the sensor, the controller connects the first seawater pipe to the cooling water passage or bypass The switching valve is switched so that it communicates with the pipe, so the temperature of the engine exhaust at the turbine inlet is reduced. The intake air volume of the engine will not be insufficient due to the temperature drop too much, and the engine will not have enough intake air at low speeds and low loads. - Boost efficiency can be improved. In addition, instead of the engine cooling water circulating in the cylinder head, etc., it is constantly kept at a low temperature. Since the retained seawater passes through the cooling water passage, the turbine housing is cooled at high speeds and high loads. The surface temperature of the plug can be reliably reduced.
【図面の簡単な説明】[Brief explanation of drawings]
【図１】本考案一実施例のマリンエンジンの水冷式ター
ボ過給機の図２のＡ矢視図。FIG. 1 is a view along arrow A in FIG. 2 of a water-cooled turbo supercharger for a marine engine according to an embodiment of the present invention.
【図２】その過給機を含むエンジンの構成図。FIG. 2 is a configuration diagram of an engine including the supercharger.
【図３】そのコントローラの制御特性を示す図。FIG. 3 is a diagram showing control characteristics of the controller.
１０ マリンエンジン １１ ターボ過給機 １２ タービンハウジング １３ 冷却水通路 １３ａ 入口 １３ｂ 出口 １５ 海水冷却系 １９ バイパス管 ２１ 第１海水管 ２２ 第２海水管 ２３ 切換弁 ２４ 回転センサ ２６ 負荷センサ ２７ 水温センサ ２９ コントローラ 10 Marine engine 11 Turbo supercharger 12 Turbine housing 13 Cooling water passage 13a Entrance 13b Exit 15 Seawater cooling system 19 Bypass pipe 21 1st seawater pipe 22 Second seawater pipe 23 Switching valve 24 Rotation sensor 26 Load sensor 27 Water temperature sensor 29 Controller
Claims (1)
動されるタービンがタービンハウジング(12)により被包
され、このタービンハウジングの外周に冷却水が通過す
る冷却水通路(13)が設けられたマリンエンジンの水冷式
ターボ過給機において、前記冷却水通路(13)の入口(13
a)に接続された海水冷却系(15)の第１海水管(21)と、前
記冷却水通路(13)の出口(13b)に接続された前記海水冷
却系(15)の第２海水管(22)と、一端が前記第１海水管(2
1)から分岐し他端が前記第２海水管(22)に合流して接続
されたバイパス管(19)と、前記第１海水管(21)と前記バ
イパス管(19)の分岐点に設けられ第１海水管(21)を冷却
水通路(13)又はバイパス管(19)に連通するように切換え
可能な切換弁(23)と、前記エンジン(10)の回転速度を検
出する回転センサ(24)と、前記エンジン(10)の負荷を検
出する負荷センサ(26)と、前記冷却水の温度を検出する
水温センサ(27)と、前記回転センサ(24)、負荷センサ(2
6)及び水温センサ(27)の各検出信号に基づいて前記切換
弁(23)を切換えるコントローラ(29)とを備えたことを特
徴とするマリンエンジンの水冷式ターボ過給機。Claim 1: A turbine driven by exhaust energy of an engine (10) is enclosed by a turbine housing (12), and a cooling water passage (13) through which cooling water passes is provided on the outer periphery of the turbine housing. In a water-cooled turbo supercharger for a marine engine, the inlet (13) of the cooling water passage (13)
A first seawater pipe (21) of the seawater cooling system (15) connected to a), and a second seawater pipe of the seawater cooling system (15) connected to the outlet (13b) of the cooling water passage (13). (22), and one end is the first seawater pipe (2
A bypass pipe (19) branched from 1) and connected to the second seawater pipe (22) at the other end, and a bypass pipe (19) provided at the branch point of the first seawater pipe (21) and the bypass pipe (19). a switching valve (23) that can be switched to communicate the first seawater pipe (21) with the cooling water passage (13) or the bypass pipe (19); and a rotation sensor (23) that detects the rotational speed of the engine (10). 24), a load sensor (26) that detects the load of the engine (10), a water temperature sensor (27) that detects the temperature of the cooling water, the rotation sensor (24), and the load sensor (24).
6) and a controller (29) that switches the switching valve (23) based on each detection signal of the water temperature sensor (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2229391U JPH04111529U (en) | 1991-03-13 | 1991-03-13 | Water-cooled turbocharger for marine engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2229391U JPH04111529U (en) | 1991-03-13 | 1991-03-13 | Water-cooled turbocharger for marine engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04111529U true JPH04111529U (en) | 1992-09-28 |
Family
ID=31907820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2229391U Pending JPH04111529U (en) | 1991-03-13 | 1991-03-13 | Water-cooled turbocharger for marine engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04111529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006090274A (en) * | 2004-09-27 | 2006-04-06 | Toyota Motor Corp | Turbocharger with electric motor |
| JP2018173058A (en) * | 2017-03-31 | 2018-11-08 | ダイハツ工業株式会社 | Exhaust turbo supercharger |
-
1991
- 1991-03-13 JP JP2229391U patent/JPH04111529U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006090274A (en) * | 2004-09-27 | 2006-04-06 | Toyota Motor Corp | Turbocharger with electric motor |
| JP2018173058A (en) * | 2017-03-31 | 2018-11-08 | ダイハツ工業株式会社 | Exhaust turbo supercharger |
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