KR100652111B1 - Composition method and apparatus for low-speed voyage - Google Patents

Composition method and apparatus for low-speed voyage Download PDF

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KR100652111B1
KR100652111B1 KR1020050051703A KR20050051703A KR100652111B1 KR 100652111 B1 KR100652111 B1 KR 100652111B1 KR 1020050051703 A KR1020050051703 A KR 1020050051703A KR 20050051703 A KR20050051703 A KR 20050051703A KR 100652111 B1 KR100652111 B1 KR 100652111B1
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hydraulic
oil
power
ship
engine
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Korean (ko)
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정의적
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정의적
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/165—Use of propulsion power plant or units on vessels the vessels being motor-driven by hydraulic fluid motor, i.e. wherein a liquid under pressure is utilised to rotate the propelling means

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

An oil pressure low-speed voyage apparatus and a method for assembling the same are provided to improve efficiency of a fishing work by being attached to an output driving shaft of an engine of a ship. An oil pressure pump(14) is connected to a sub output shaft(19) of a ship engine(1) by a belt. An oil pressure is applied to an oil pressure motor(10) which is connected to a coupling pulley(7) by a belt(8). An electronic clutch(9) is formed between the oil pressure motor and the coupling pulley, and transfers or blocks a power. An oil quantity adjustment valve(13) is formed between the oil pressure pump and the oil pressure motor, and adjusts an oil quantity. A manual valve(12) operates the oil quantity adjustment valve. An oil flows on an oil hose(16) which connects the oil pressure pump, the oil motor, the oil quantity adjustment valve, and the manual valve. An oil tank(15) which stores the oil is connected to the manual valve. The manual valve adjusts a speed of the ship by controlling an oil quantity of the oil quantity adjustment valve. The manual valve controls the ship forward/backward by controlling a rotation direction of the oil pressure motor.

Description

유압구동 저속항해장치 및 그 구성방법{Composition method and apparatus for low-speed voyage}Compression method and apparatus for low-speed voyage

도 1은 일반적인 선박엔진의 동력전달계통도1 is a power transmission system diagram of a typical ship engine

도 2는 본 발명의 실시예시도Figure 2 is an embodiment of the present invention

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

1. 선박엔진 2. 유압클러치1. Marine Engine 2. Hydraulic Clutch

3. 출력축커플링 4. 스크류축커플링3. Output Shaft Coupling 4. Screw Shaft Coupling

5. 스크류축 6. 스크류5. Screw shaft 6. Screw

7. 커플링풀리 8, 8a. 벨트7. Coupling pulley 8, 8a. belt

9. 전자클러치 10. 유압모터9. Electronic clutch 10. Hydraulic motor

11. 브라켓트 12. 메뉴얼밸브11. Bracket 12. Manual Valve

13. 유량조절밸브 14. 유압펌프13. Flow control valve 14. Hydraulic pump

15. 오일탱크 16. 유압호스15. Oil tank 16. Hydraulic hose

17. 전원 18. 트롤링밸브17. Power supply 18. Trolling valve

19. 보조출력축 20. 풀리19. Auxiliary output shaft 20. Pulley

본 발명은 어선의 조업시에 저속 및 초저속 항해를 위한 선박엔진의 부속장치로서, 보다 상세하게는 선박엔진의 유압클러치와는 별개의 장치로서 구성한 유압구동 저속항해장치이다. The present invention is a hydraulic engine low speed navigation system configured as a separate device of the ship engine for low speed and ultra low speed navigation in operation of the fishing vessel, and more specifically configured as a separate device from the hydraulic clutch of the ship engine.

종래의 선박엔진 감속장치로서는 트롤링밸브가 있으며, 이런 트롤링밸브는 선박엔진의 유압클러치에 부착하여 감속을 하거나, 트롤링밸브를 부착하지 않은 선박은 유압클러치를 반클러치 상태로 사용을 하여 저속항해 조업을 함으로써 클러치의 잦은 고장으로 조업을 하지 못하고 예인되어 선박의 회항에 따른 조업손실 및 수리비용이 결국 어민의 경제적 부담으로 발생되고 있다.Conventional ship engine speed reduction device includes a trolling valve, which is attached to the hydraulic clutch of the ship engine to slow down, or a vessel without a trolling valve is used to operate the low-speed navigation by using the hydraulic clutch in a half-clutch state. As a result of the frequent failure of the clutch, the operation is towed, and the operation loss and repair cost according to the ship's turn are caused by the economic burden of fishermen.

또한, 트롤링밸브 또한 일정한 저속항해 장치에 불과하여 조류 및 날씨에 따라 항해속도를 적절하게 조절하지 못하여 상황변화에 따른 조업조건을 만족시키지 못하는 문제점이 있었다.In addition, the trolling valve is also a constant low-speed navigation system, there is a problem that can not properly adjust the navigation speed according to the tidal current and the weather does not satisfy the operating conditions according to the change of circumstances.

따라서, 본 발명은 유압클러치와는 별개의 장치로서 유압구동 저속항해장치를 구성하는데 그 목적이 있다.Therefore, an object of the present invention is to construct a hydraulically driven low speed navigation apparatus as a separate device from the hydraulic clutch.

또한, 상기 유압구동 저속항해장치를 선박의 엔진에 부착함으로써 조업조건에 맞는 저속 및 초저속으로 선박이 전진 및 후진항해를 할 수 있어 결국 조업의 능률을 향상시킬 수 있는 유압구동 저속항해장치를 제공하는데 또 다른 목적이 있다.In addition, by attaching the hydraulic drive low speed navigation device to the engine of the ship, the ship can move forward and backward at a low speed and ultra low speed suitable for the operating conditions to provide a hydraulic drive low speed navigation device that can eventually improve the efficiency of operation. There is another purpose.

더욱이, 본 발명에 의해 선박이 비상항해가 가능하도록 하여 종래의 유압클 러치가 고장이 발생하여도 선적지로 입항이 가능한 비상항해기능을 갖춘 유압구동 저속항해장치를 제공하는데 또 다른 목적이 있다.Furthermore, it is another object of the present invention to provide a hydraulically driven low-speed navigation apparatus having an emergency navigation function that allows a ship to make an emergency navigation so that a conventional hydraulic clutch can enter a shipping place even if a failure occurs.

본 발명은 어선의 조업시에 저속 및 초저속 항해를 위한 선박엔진의 부속장치로서 보다 상세하게는 선박엔진의 유압클러치와는 별개의 장치로서 구성한 유압구동 저속항해장치이다.The present invention is a hydraulic drive low speed navigation system configured as a device separate from the hydraulic clutch of the ship engine, in more detail as an accessory device of the ship engine for low speed and ultra low speed navigation in the operation of fishing vessels.

먼저, 도 1은 일반적인 선박엔진의 동력전달계통도로서, 선박엔진(1)에서 발생된 동력이 유압클러치(2)를 거쳐 스크류축(5)으로 전달되고, 스크류(6)를 회전시키게 된다. First, Figure 1 is a power transmission system diagram of a general ship engine, the power generated in the ship engine (1) is transmitted to the screw shaft (5) via the hydraulic clutch (2), and rotates the screw (6).

이때 유압클러치(2)와 스크류축(5)은 출력축커플링(3) 및 스크류축커플링(4)으로 연결되고, 유압클러치(2)의 일측에는 트롤링밸브(18)가 형성되어 있다.In this case, the hydraulic clutch 2 and the screw shaft 5 are connected to the output shaft coupling 3 and the screw shaft coupling 4, and a trolling valve 18 is formed at one side of the hydraulic clutch 2.

상기 트롤링밸브(18)는 일종의 유압클러치(2) 부속장치로서 운행중인 선박의 속도를 무단으로 변속시켜주는 장치이며, 정상 항해시에는 사용치 않고 조업중이나 엔진의 아일들상태의 속도보다 이하로 선박을 운행시킬 때 사용하는 장치이다.The trolling valve 18 is a kind of hydraulic clutch (2) attached to the device to change the speed of the vessel in operation without permission, the vessel is not used during normal voyage, the vessel is in operation or below the speed of the isle state of the engine It is a device used to operate.

이런 트롤링밸브(18)의 동작에는 정상 작동시 고압이 필요하며, 장시간 항해 후 트롤링밸브(18)를 사용하면 오일 온도의 상승으로 인해 작동이 비정상적으로 되는 경우가 빈번하게 발생된다.The operation of the trolling valve 18 requires high pressure during normal operation, and when the trolling valve 18 is used after a long voyage, an operation is frequently made due to an increase in oil temperature.

또한, 유압클러치 펌프에서 발생된 고압을 저압으로 변환시켜 클러치판의 밀착력이 감소되어 스크류가 저속으로 회전하게 되는데, 장시간 사용시에는 유압클러치판의 마모로 인해 정상 항해시에 비정상적으로 되는 경우도 빈번하게 발생된다. In addition, by converting the high pressure generated by the hydraulic clutch pump to low pressure, the adhesion of the clutch plate is reduced and the screw rotates at low speed.In case of prolonged use, the screw is frequently abnormal due to the wear of the hydraulic clutch plate. Is generated.

이하 첨부된 도면에 의해 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 실시예시도로서, 본 발명은 선박엔진(1)의 동력이 유압클러치(2)를 통해 출력축(도면에 나타나지 않음)에 전달되고, 상기 출력축에 전달된 동력이 커플링(3, 4)을 통해 스크류축(5) 및 스크류(6)에 전달되는 선박엔진(1)의 동력전달장치에 있어서;2 is an exemplary view of the present invention, the present invention is the power of the ship engine 1 is transmitted to the output shaft (not shown) through the hydraulic clutch 2, the power transmitted to the output shaft is coupled to the coupling ( In the power transmission device of the ship engine (1) transmitted to the screw shaft (5) and the screw (6) through 3, 4);

상기 선박엔진(1)의 보조출력축(19)에 벨트(8a)로 연결된 유압펌프(14)와, 상기 유압펌프(14)에서 유압을 인가받으며 커플링풀리(7)에 벨트(8)로 연결되어 동력전달이 가능한 유압모터(10)와, 상기 유압모터(10)와 커플링풀리(7) 사이에 형성되어 동력을 전달 또는 차단해주는 전자클러치(9)와, 상기 유압펌프(14) 및 유압모터(10) 사이에 형성되어 유량을 조절하는 유량조절밸브(13)와, 상기 유량조절밸브(13)를 작동시켜주는 메뉴얼밸브(12)와, 상기 유압펌프(14), 유압모터(10), 유량조절밸브(13) 및 메뉴얼밸브(12)를 연결해주며 작동유가 흐르는 유압호스(16)와, 상기 메뉴얼밸브(12)와 연결되며 작동유가 저장되는 오일탱크(15)로 구성되어 있다.A hydraulic pump 14 connected to the auxiliary output shaft 19 of the ship engine 1 by a belt 8a and hydraulic pressure from the hydraulic pump 14 are connected to the coupling pulley 7 by a belt 8. And a hydraulic motor 10 capable of power transmission, an electromagnetic clutch 9 formed between the hydraulic motor 10 and the coupling pulley 7 to transmit or block power, the hydraulic pump 14 and the hydraulic pressure. A flow control valve 13 formed between the motor 10 to adjust the flow rate, a manual valve 12 for operating the flow control valve 13, the hydraulic pump 14, the hydraulic motor 10 And a hydraulic hose 16 for connecting the flow control valve 13 and the manual valve 12 and flowing hydraulic oil, and an oil tank 15 connected with the manual valve 12 and storing the hydraulic oil.

먼저, 유압펌프(14)는 선박엔진(1)의 주출력축의 반대쪽에 형성된 보조출력축(19)에 풀리(20) 및 벨트(8a)로 연결되어 엔진(1)의 동력을 인가받을 수 있다.First, the hydraulic pump 14 is connected to the auxiliary output shaft 19 formed on the opposite side of the main output shaft of the ship engine 1 by the pulley 20 and the belt 8a can receive the power of the engine (1).

상기 유압모터(10)는 유압펌프(14)에서 유압을 인가받으며 출력축과 스크류축(5) 사이에 형성된 커플링풀리(7)에 벨트(8)로 연결되어 상기 스크류축(5)에 동력전달이 가능하다.The hydraulic motor 10 receives hydraulic pressure from the hydraulic pump 14 and is connected to the coupling pulley 7 formed between the output shaft and the screw shaft 5 by a belt 8 to transmit power to the screw shaft 5. This is possible.

본 발명은 유압클러치(2)가 중립위치에 있어서 선박엔진(1)의 동력이 스크류축(5)에 전달되지 않을 때 사용하므로 본 발명에 의한 저속항해장치를 사용하지 않 을 때는 유압모터(10)와 커플링풀리(7) 사이에 동력을 끊어주는 장치가 필요하다. 따라서, 유압모터(10)의 일측에 형성된 전자클러치(9)는 본 발명을 사용하지 않을 때에는 동력전달이 차단되어 유압모터(10)와 커플링풀리(7) 사이의 동력전달을 차단해주는 역할을 한다.The present invention is used when the hydraulic clutch (2) is in a neutral position when the power of the ship engine (1) is not transmitted to the screw shaft (5), the hydraulic motor (10) when not using the low speed navigation apparatus according to the present invention And a device for disconnecting power between the coupling pulley (7). Therefore, the electromagnetic clutch 9 formed on one side of the hydraulic motor 10 serves to block power transmission between the hydraulic motor 10 and the coupling pulley 7 when the power transmission is interrupted when the present invention is not used. do.

상기 유량조절밸브(13)는 스위치 역할을 하는 메뉴얼밸브(12)에 의해 작동되며, 유압모터(10)에 인가되는 작동유의 양을 조절한다.The flow control valve 13 is operated by a manual valve 12 serving as a switch, and adjusts the amount of hydraulic oil applied to the hydraulic motor 10.

각각의 유체기계구성품 즉, 유압펌프(14), 유압모터(10), 유량조절밸브(13) 및 메뉴얼밸브(12) 사이에는 작동유가 흐르는 유압호스(16)가 연결되어 있음은 당연한 것이며, 상기 오일탱크(15)는 각각의 유체기계 및 유압호스(16)를 흐르는 작동유의 저장탱크이다.It is natural that the hydraulic hose 16 through which hydraulic fluid flows is connected between each fluid machine component, that is, the hydraulic pump 14, the hydraulic motor 10, the flow regulating valve 13, and the manual valve 12. The oil tank 15 is a storage tank of hydraulic fluid flowing through each fluid machine and the hydraulic hose 16.

본 발명의 작용을 살펴보면, 엔진(1)이 가동될 때 유압클러치(2)가 중립위치가 되도록 한다. 그러면, 엔진(1)은 가동되나 엔진(1)의 동력은 출력축으로 전달되지 않는 공회전 상태가 된다. 이때 보조출력축(19) 쪽에는 동력이 전달되어 유압펌프(14)를 가동시키게 되고, 상기 유압펌프(14)는 유압모터(10)에 유압을 인가하며, 상기 유압모터(10)는 회전하게 된다. Looking at the operation of the present invention, the hydraulic clutch (2) is in a neutral position when the engine (1) is operated. Then, the engine 1 is operated, but the engine 1 is in an idle state in which power of the engine 1 is not transmitted to the output shaft. At this time, power is transmitted to the auxiliary output shaft 19 to operate the hydraulic pump 14, the hydraulic pump 14 applies hydraulic pressure to the hydraulic motor 10, and the hydraulic motor 10 rotates. .

상기 유압모터(10)의 일측에 형성된 전자클러치(9)에 전원(17)이 인가되면 유압모터(10)의 동력이 전자클러치(9)와 연결된 벨트(8)에 인가되고, 상기 벨트(8)가 커플링풀리(7)로서 연결된 스크류축(5)을 회전시키게 된다.When a power source 17 is applied to the electromagnetic clutch 9 formed on one side of the hydraulic motor 10, the power of the hydraulic motor 10 is applied to the belt 8 connected to the electromagnetic clutch 9, and the belt 8 ) Rotates the screw shaft (5) connected as a coupling pulley (7).

여기서, 회전속도 및 회전방향은 메뉴얼밸브(12) 및 유량조절밸브(13)에서 제어하게 되는데, 회전속도는 상기 유량조절밸브(13)의 개폐량 및 엔진(1)의 회전 속도에 따라 속도를 조절하고, 회전방향은 유압모터(10)의 회전방향으로서 선박의 전후진을 결정한다.Here, the rotational speed and rotational direction is controlled by the manual valve 12 and the flow control valve 13, the rotational speed is a speed in accordance with the opening and closing amount of the flow control valve 13 and the rotational speed of the engine (1). The rotation direction determines the forward and backward movement of the ship as the rotation direction of the hydraulic motor 10.

결국, 메뉴얼밸브(12)로서 유량조절밸브(13) 및 유압모터(10)를 제어하여 속도 및 방향을 결정한다.As a result, the flow rate control valve 13 and the hydraulic motor 10 are controlled as the manual valve 12 to determine the speed and direction.

상기 메뉴얼밸브(12)는 일부분에 속도 및 방향을 나타내는 디스플레이부를 구성하여, 사용자가 선박의 속도 및 방향을 손쉽게 알 수 있도록 한다.The manual valve 12 is configured to display the speed and direction to a portion, so that the user can easily know the speed and direction of the vessel.

상기 유량조절밸브(13)의 개방량이 많고 엔진(1)의 회전속도가 높으면 유압모터(10)의 회전속도가 빨라져 스크류(6)가 빠르게 회전될 것이며, 반대로 유량조절밸브(13)의 개방량이 적고 엔진(1)의 회전속도가 낮으면 유압모터(10)의 회전속도가 느려져 스크류(6)가 느리게 회전된다.If the amount of opening of the flow control valve 13 is high and the rotation speed of the engine 1 is high, the rotation speed of the hydraulic motor 10 is increased, so that the screw 6 will be rapidly rotated, and, on the contrary, the amount of opening of the flow control valve 13 is reversed. If the rotation speed of the engine 1 is low and the rotation speed of the hydraulic motor 10 is low, the screw 6 is rotated slowly.

따라서, 상기 유량조절밸브(13)를 통과하는 작동유의 유량과 선박엔진(1)의 회전속도 변화로서 유속을 제어하므로 조업조건에 따라 저속 및 초저속으로 운행속도를 조절할 수 있으며, 저속 또는 초저속이 되어도 각 구성품에 무리가 없어 수명이 길게 된다.Therefore, since the flow rate is controlled by changing the flow rate of the working oil passing through the flow control valve 13 and the rotational speed of the ship engine 1, the operating speed can be adjusted at low speed and ultra low speed according to the operating conditions, and low speed or ultra low speed Even in this case, the life of each component is long enough.

상술한 바와 같이, 본 발명은 유압클러치와는 별개의 장치로서 유압구동 저속항해장치를 구성하여 선박의 엔진의 출력구동축에 부착함으로써 조업조건에 맞는 저속 및 초저속으로 선박이 전진 및 후진항해를 할 수 있어 결국 조업의 능률을 향상시킬 수 있다.As described above, the present invention constitutes a hydraulically driven low speed navigation device as a separate device from the hydraulic clutch and attaches it to the output drive shaft of the engine of the ship so that the ship can move forward and backward at low speed and ultra low speed suitable for operating conditions. Can eventually improve the efficiency of operations.

또한, 본 발명에 의해 선박이 비상항해가 가능하도록 하여 종래의 유압클러치가 고장이 발생하여도 선적지로 입항이 가능하게 된다.In addition, the present invention allows the ship to make emergency navigation, so that even if a conventional hydraulic clutch breaks down, it is possible to enter the shipping place.

Claims (4)

선박엔진(1)의 동력이 유압클러치(2)를 통해 출력축에 전달되고, 상기 출력축에 전달된 동력이 커플링(3, 4)을 통해 스크류축(5) 및 스크류(6)에 전달되는 선박엔진(1)의 동력전달장치에 있어서;The power of the ship engine 1 is transmitted to the output shaft through the hydraulic clutch 2, the power transmitted to the output shaft is transmitted to the screw shaft 5 and the screw 6 through the coupling (3, 4) In the power transmission device of the engine (1); 상기 선박엔진(1)의 보조출력축(19)에 벨트(8a)로 연결된 유압펌프(14)와, 상기 유압펌프(14)에서 유압을 인가받으며 커플링풀리(7)에 벨트(8)로 연결되어 동력전달이 가능한 유압모터(10)와, 상기 유압모터(10)와 커플링풀리(7) 사이에 형성되어 동력을 전달 또는 차단해주는 전자클러치(9)와, 상기 유압펌프(14) 및 유압모터(10) 사이에 형성되어 유량을 조절하는 유량조절밸브(13)와, 상기 유량조절밸브(13)를 작동시켜주는 메뉴얼밸브(12)와, 상기 유압펌프(14), 유압모터(10), 유량조절밸브(13) 및 메뉴얼밸브(12)를 연결해주며 작동유가 흐르는 유압호스(16)와, 상기 메뉴얼밸브(12)와 연결되며 작동유가 저장되는 오일탱크(15)로 구성되되,A hydraulic pump 14 connected to the auxiliary output shaft 19 of the ship engine 1 by a belt 8a and hydraulic pressure from the hydraulic pump 14 are connected to the coupling pulley 7 by a belt 8. And a hydraulic motor 10 capable of power transmission, an electromagnetic clutch 9 formed between the hydraulic motor 10 and the coupling pulley 7 to transmit or block power, the hydraulic pump 14 and the hydraulic pressure. A flow control valve 13 formed between the motor 10 to adjust the flow rate, a manual valve 12 for operating the flow control valve 13, the hydraulic pump 14, the hydraulic motor 10 , The hydraulic pressure hose 16 which connects the flow control valve 13 and the manual valve 12 and flows the hydraulic oil, and the oil tank 15 which is connected to the manual valve 12 and stores the hydraulic oil, 상기 메뉴얼밸브(12)는 유량조절밸브(13)의 유량을 제어하여 선박의 속도를 조절하며, 유압모터(10)의 회전방향을 제어하여 선박의 전후진을 제어하는 것이 특징인 유압구동 저속항해장치The manual valve 12 controls the flow rate of the flow control valve 13 to adjust the speed of the ship, the hydraulic drive low-speed navigation characterized in that to control the forward and backward of the ship by controlling the rotational direction of the hydraulic motor 10 Device 삭제delete 유압구동 저속항해장치의 구성방법에 있어서,In the construction method of the hydraulic drive low speed navigation device, 선박 엔진(1)의 동력이 유압클러치(2)에 의해 주출력축으로 전달되는 것이 차단되며, 상기 주출력축의 반대쪽에 형성된 보조출력축(19)으로 엔진(1)의 동력이 전달되어, 상기 보조출력축(19)으로 출력되는 동력이 동력전달장치에 의해 연결되어 스크류축(5)을 회전시키는 것이 특징인 유압구동 저속항해장치의 구성방법The power of the ship engine 1 is blocked from being transmitted to the main output shaft by the hydraulic clutch 2, the power of the engine 1 is transmitted to the auxiliary output shaft 19 formed on the opposite side of the main output shaft, the auxiliary output shaft (19) A method of constructing a hydraulically driven low-speed navigation apparatus characterized by rotating the screw shaft (5) by connecting the power output by the power transmission device. 제 3항에 있어서, 상기 동력전달장치는 엔진(1)의 동력을 인가받는 유압펌프(14)와, 상기 유압펌프(14)에서 유압을 인가받으며 벨트(8)에 의해 연결되어 스크류축(5)에 동력전달이 가능한 유압모터(10)와, 작동유의 유량을 조절하여 속도를 조절하는 유량조절밸브(13)로 구성된 것이 특징인 유압구동 저속항해장치의 구성방법4. The screw shaft (5) of claim 3, wherein the power transmission device is connected to a hydraulic pump (14) receiving power from the engine (1), and to the belt (8) by receiving hydraulic pressure from the hydraulic pump (14). Hydraulic motor 10 capable of power transmission to the) and the flow control valve 13 is characterized by consisting of a flow control valve 13 for regulating the speed by adjusting the flow rate of the working oil
KR1020050051703A 2005-06-16 2005-06-16 Composition method and apparatus for low-speed voyage KR100652111B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036300U (en) * 1973-07-27 1975-04-16
JPS5326095A (en) * 1976-08-19 1978-03-10 Schottel Werft Reversing device for rudder propeller* jet rudder* other drive device of shiping
US4273543A (en) * 1979-10-01 1981-06-16 Engine Technology, Inc. Emergency marine propulsion using existing propeller shaft
US6099367A (en) * 1999-03-02 2000-08-08 Brunswick Corporation Hydrostatic propulsion system for a marine vessel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036300U (en) * 1973-07-27 1975-04-16
JPS5326095A (en) * 1976-08-19 1978-03-10 Schottel Werft Reversing device for rudder propeller* jet rudder* other drive device of shiping
US4273543A (en) * 1979-10-01 1981-06-16 Engine Technology, Inc. Emergency marine propulsion using existing propeller shaft
US6099367A (en) * 1999-03-02 2000-08-08 Brunswick Corporation Hydrostatic propulsion system for a marine vessel

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