EP2847454A1 - Pneumatic system for piston engine - Google Patents

Pneumatic system for piston engine

Info

Publication number
EP2847454A1
EP2847454A1 EP13723532.1A EP13723532A EP2847454A1 EP 2847454 A1 EP2847454 A1 EP 2847454A1 EP 13723532 A EP13723532 A EP 13723532A EP 2847454 A1 EP2847454 A1 EP 2847454A1
Authority
EP
European Patent Office
Prior art keywords
air
starting
duct
valve
pneumatic
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.)
Granted
Application number
EP13723532.1A
Other languages
German (de)
French (fr)
Other versions
EP2847454B1 (en
Inventor
Paolo CALCINOTTO
Marino DAPINGUENTE
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.)
Wartsila Finland Oy
Original Assignee
Wartsila Finland Oy
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 Wartsila Finland Oy filed Critical Wartsila Finland Oy
Publication of EP2847454A1 publication Critical patent/EP2847454A1/en
Application granted granted Critical
Publication of EP2847454B1 publication Critical patent/EP2847454B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N7/00—Starting apparatus having fluid-driven auxiliary engines or apparatus
    • F02N7/08—Starting apparatus having fluid-driven auxiliary engines or apparatus the engines being of rotary type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N9/00—Starting of engines by supplying auxiliary pressure fluid to their working chambers
    • F02N9/04—Starting of engines by supplying auxiliary pressure fluid to their working chambers the pressure fluid being generated otherwise, e.g. by compressing air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/04—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for starting by means of fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/08—Redundant elements, e.g. two sensors for measuring the same parameter

Definitions

  • the present invention relates to a pneumatic system for a piston engine in accordance with the preamble of claim 1 .
  • the starting motor can be used only when there is flow communication between the air tank and the mo- tor.
  • the selected starting motor can be controlled by a control valve, which is usually a solenoid valve that can also be operated manually.
  • the same air tank is used for supplying pressurized air to other devices of the engine.
  • the other pneumatic devices are connected to the ducts between the air tank and the starting motors downstream from the valves.
  • a problem with the present double air starting systems is that when one of the valves between the air tank and the starting motors is open, also the other starting motor can receive pressurized air via the duct that supplies air to the other pneumatic devices of the engine. It is thus possible to accidentally activate a wrong starting motor, which can damage the starting motor or components of the engine. Summary of the invention
  • a pneumatic system according to the invention comprises a first air starter and a second air starter, each of the air starters comprising a pneumatic starting motor for rotating a crankshaft of an engine for starting the engine, a first starting air duct for connecting the first air starter to a pressure medium source, a second starting air duct for connecting the second air starter to a pressure me- dium source, valve means for selectively allowing and preventing flow in the first starting air duct and in the second starting air duct, a first starting valve for selectively allowing and preventing pressure medium flow through the first starting motor, a second starting valve for selectively allowing and preventing pressure medium flow through the second starting motor, an air supply duct for supplying pressure medium to other pneumatic devices than the starting motors, a first connecting duct for connecting the air supply duct to the pneumatic system downstream from the valve means, and a
  • the valve means can be a first shut-off valve that is arranged between a pressure medium source and the first air starter and a second shut-off valve that is arranged between the pressure medium source and the second air starter.
  • the system is provided with a se- lector valve, which selector valve allows flow from a pressure medium source into only one of the starting air ducts at a time.
  • the selector valve further increases the safety of the system by allowing pressurization of only one of the air starters at a time.
  • the system is provided with at least one control valve for preventing flow through the starting motors when a turning gear is engaged.
  • the first connecting duct can be connected to the first starting air duct or to a receiving section of the first air starter, and the second connecting duct can be connected to the second starting air duct or to a receiving section of the second air starter.
  • Fig. 1 shows schematically a pneumatic system according to an embodiment of the invention
  • Fig. 2 shows schematically a pneumatic system according to another embodi- ment of the invention.
  • FIG 1 a pneumatic system of a piston engine.
  • the pneumatic system comprises a first air starter 1 and a second air starter 2, each of the air starters 1 , 2 comprising a pneumatic starting motor 1 a, 2a for rotating the crankshaft of the engine.
  • the two air starters 1 , 2 are independent, and only one of the air starters 1 , 2 is thus used at a time.
  • the purpose of having two air starters 1 , 2 is to increase safety by ensuring that the engine can be started even in the case one of the air starters 1 , 2 does not work.
  • the engine is a large internal combustion engine, such as a main or an auxiliary engine of a ship or an engine that is used at a power plant for producing electricity.
  • each of the air starters 1 , 2 is connected to a pressure medium source.
  • the pneumatic system is provided with a first air tank 13a and with a second air tank 13b.
  • the pressure in the air tanks 13a, 13b is approximately 30 bar.
  • the first air starter 1 is connected to the first air tank 13a with a first starting air duct 3 and the second air starter 2 is connected to the second air tank 13b with a second starting air duct 4.
  • Each of the air starters 1 , 2 is provid- ed with a receiving section 1 b, 2b, to which the starting air duct 3, 4 is connected.
  • each starting air duct 3, 4 is provided with a shut-off valve 5, 6. Only one of the shut-off valves 5, 6 is normally open during starting or operation of the engine.
  • the pressurized air can flow to starting valves 7, 8.
  • the system is provided with a first starting valve 7 for selectively allowing and preventing flow through the first starting motor 1 a and with a second starting valve 8 for selectively allowing and preventing flow through the second starting motor 2a.
  • the starting valves 7, 8 can be, for instance, solenoid valves. However, in order to enable starting of the engine also in case of loss of power or failure of the engine automation, it has to be possible to be able to operate the starting valves 7, 8 also manually.
  • the system is further provided with at least one control valve 14, which prevents flow to the starting motors 1 a, 2a if the turning gear of the engine is engaged.
  • the turning gear is used for rotating the crankshaft of the engine slowly to turn it into a suitable angular position for servicing.
  • the turning gear can also be used before starting of the engine for ensuring that the engine can be started safely.
  • the control valve 14 of the turning gear is arranged upstream from the starting valves 7, 8.
  • the respective starting valve 7, 8 When one of the air starters 1 , 2 is pressurized, the respective starting valve 7, 8 is open and the turning gear is not engaged, pressurized air can flow from the receiving section 1 b, 2b of the air starter 1 , 2 to the control valve 14, through the starting valve 7, 8, and further to the starting motor 1 a, 2a.
  • the starting motor 1 a, 2a is thus rotated and the engine started.
  • the pressurized air is also used for other pneumatic devices 17 of the engine than the starting motors 1 a, 2a.
  • the system is provided with an air supply duct 15 for supplying the air from the air tanks 13a, 13b to the other pneumatic devices 17.
  • the system comprises a first connecting duct 1 1 for connecting the air supply duct 15 to the pneumatic system downstream from the first shut-off valve 5 and a second connecting duct 12 for connecting the air supply duct 15 to the pneumatic system downstream from the second shut-off valve 6.
  • the point where each connecting duct 1 1 , 12 is connected to the pneumatic sys- tern is upstream from the respective starting valve 7, 8 for allowing flow to the other pneumatic devices when the starting motors 1 a, 2a are not used.
  • the connecting ducts 1 1 , 12 are connected to the starting air ducts 3, 4 between the shut-off valves 5, 6 and the air starters 1 , 2.
  • the connecting ducts 1 1 , 12 could also be connected to the receiving sections 1 b, 2b of the air starters 1 , 2.
  • the air is supplied to the other devices 17 through one of the starting air ducts 3, 4.
  • Each of the connecting ducts 1 1 , 12 is provided with a non-return valve 9, 10 for allowing flow into the air supply duct 15 but pre- venting flow from the air supply duct 15 to the starting air ducts 3, 4 and further to the air starters 1 , 2.
  • Accidental pressurization and possible consequent activation of a wrong air starter 1 , 2 is thus prevented.
  • the embodiment of figure 2 works in a similar way as the embodiment of figure 1 .
  • a difference between the embodiments is that in figure 2 the system is pro- vided with only one starting air tank 13. Both air starters 1 , 2 thus receive air from the same air tank 13.
  • the system is provided with a selector valve 16.
  • the selector valve 16 allows flow only into one of the starting air ducts 3, 4 at a time.
  • the selector valve 16 thus further increases the safety of the system, since it is not possible to pressurize both air starters 1 , 2 at the same time.
  • the selector valve 16 can be operated in the normal operating conditions of the engine electrically, but for enabling starting of the engine also in case of loss of power or malfunctioning of the automation, the selector valve 16 needs to be operable also manually.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The pneumatic system for a piston engine comprises two independent pneumatic starting motors (1a, 2a), which are connected to a pressure medium source (13, 13a, 13b) by starting air ducts (3, 4). Connecting ducts (11, 12) that connect the rest of the pneumatic system to the starting air ducts (3, 4) are provided with non-return valves (9, 10) for preventing flow to a wrong starting motor (1a, 2a).

Description

Pneumatic system for piston engine Technical field of the invention
The present invention relates to a pneumatic system for a piston engine in accordance with the preamble of claim 1 .
Background of the invention
Large internal combustion engines, such as ship engines, are usually started by using pressurized air for rotating the crankshaft of the engine. There are two alternative ways of using the pressurized air. One option is to introduce the air into the cylinders of the engine in an appropriate order for moving the pistons. Another option is to use a pneumatic starting motor, which can be engaged with the crankshaft. Especially in ships, it is sometimes desirable to increase the safety by providing the engine with two independent starting motors, which ensures that the engine can always be started even if one of the starting motors does not work. Each of the starting motors is connected to an air tank storing the pressurized air. Each air duct between the air tank and the starting motor is provided with a valve for opening and closing flow communication between the starting motor and the air tank. The starting motor can be used only when there is flow communication between the air tank and the mo- tor. The selected starting motor can be controlled by a control valve, which is usually a solenoid valve that can also be operated manually. The same air tank is used for supplying pressurized air to other devices of the engine. The other pneumatic devices are connected to the ducts between the air tank and the starting motors downstream from the valves. A problem with the present double air starting systems is that when one of the valves between the air tank and the starting motors is open, also the other starting motor can receive pressurized air via the duct that supplies air to the other pneumatic devices of the engine. It is thus possible to accidentally activate a wrong starting motor, which can damage the starting motor or components of the engine. Summary of the invention
The object of the present invention is to provide an improved pneumatic system for a piston engine. The characterizing features of the system according to the invention are given in the characterizing part of claim 1 . A pneumatic system according to the invention comprises a first air starter and a second air starter, each of the air starters comprising a pneumatic starting motor for rotating a crankshaft of an engine for starting the engine, a first starting air duct for connecting the first air starter to a pressure medium source, a second starting air duct for connecting the second air starter to a pressure me- dium source, valve means for selectively allowing and preventing flow in the first starting air duct and in the second starting air duct, a first starting valve for selectively allowing and preventing pressure medium flow through the first starting motor, a second starting valve for selectively allowing and preventing pressure medium flow through the second starting motor, an air supply duct for supplying pressure medium to other pneumatic devices than the starting motors, a first connecting duct for connecting the air supply duct to the pneumatic system downstream from the valve means, and a second connecting duct for connecting the air supply duct to the pneumatic system downstream from the valve means. Each of the first connecting duct and the second connecting duct is provided with a non-return valve for preventing flow from the air supply duct to the air starter.
With the pneumatic system according to the invention, pressurization of a wrong starting motor is automatically prevented. The risk of damages to the starting motors due to an error by an engine operator is thus decreased and the safety of the operators is improved.
The valve means can be a first shut-off valve that is arranged between a pressure medium source and the first air starter and a second shut-off valve that is arranged between the pressure medium source and the second air starter.
According to an embodiment of the invention, the system is provided with a se- lector valve, which selector valve allows flow from a pressure medium source into only one of the starting air ducts at a time. The selector valve further increases the safety of the system by allowing pressurization of only one of the air starters at a time. According to an embodiment of the invention, the system is provided with at least one control valve for preventing flow through the starting motors when a turning gear is engaged.
The first connecting duct can be connected to the first starting air duct or to a receiving section of the first air starter, and the second connecting duct can be connected to the second starting air duct or to a receiving section of the second air starter.
Brief description of the drawings Embodiments of the invention are described below in more detail with reference to the accompanying drawings, in which
Fig. 1 shows schematically a pneumatic system according to an embodiment of the invention, and
Fig. 2 shows schematically a pneumatic system according to another embodi- ment of the invention.
Description of embodiments of the invention
In figure 1 is shown a pneumatic system of a piston engine. The pneumatic system comprises a first air starter 1 and a second air starter 2, each of the air starters 1 , 2 comprising a pneumatic starting motor 1 a, 2a for rotating the crankshaft of the engine. The two air starters 1 , 2 are independent, and only one of the air starters 1 , 2 is thus used at a time. The purpose of having two air starters 1 , 2 is to increase safety by ensuring that the engine can be started even in the case one of the air starters 1 , 2 does not work. The engine is a large internal combustion engine, such as a main or an auxiliary engine of a ship or an engine that is used at a power plant for producing electricity. However, the invention is applicable to all engines using pneumatic starting motors. Each of the air starters 1 , 2 is connected to a pressure medium source. In the embodiment of figure 1 , the pneumatic system is provided with a first air tank 13a and with a second air tank 13b. The pressure in the air tanks 13a, 13b is approximately 30 bar. The first air starter 1 is connected to the first air tank 13a with a first starting air duct 3 and the second air starter 2 is connected to the second air tank 13b with a second starting air duct 4. However, it would also be possible to connect both air starters 1 , 2 to both air tanks 13a, 13b, or to provide the system with a single air tank. Each of the air starters 1 , 2 is provid- ed with a receiving section 1 b, 2b, to which the starting air duct 3, 4 is connected. For selectively preventing and allowing flow in the starting air ducts 3, 4, each starting air duct 3, 4 is provided with a shut-off valve 5, 6. Only one of the shut-off valves 5, 6 is normally open during starting or operation of the engine. From the receiving sections 1 b, 2b of the air starters 1 , 2, the pressurized air can flow to starting valves 7, 8. The system is provided with a first starting valve 7 for selectively allowing and preventing flow through the first starting motor 1 a and with a second starting valve 8 for selectively allowing and preventing flow through the second starting motor 2a. The starting valves 7, 8 can be, for instance, solenoid valves. However, in order to enable starting of the engine also in case of loss of power or failure of the engine automation, it has to be possible to be able to operate the starting valves 7, 8 also manually. The system is further provided with at least one control valve 14, which prevents flow to the starting motors 1 a, 2a if the turning gear of the engine is engaged. The turning gear is used for rotating the crankshaft of the engine slowly to turn it into a suitable angular position for servicing. The turning gear can also be used before starting of the engine for ensuring that the engine can be started safely. In the embodiment of the figures, the control valve 14 of the turning gear is arranged upstream from the starting valves 7, 8. When one of the air starters 1 , 2 is pressurized, the respective starting valve 7, 8 is open and the turning gear is not engaged, pressurized air can flow from the receiving section 1 b, 2b of the air starter 1 , 2 to the control valve 14, through the starting valve 7, 8, and further to the starting motor 1 a, 2a. The starting motor 1 a, 2a is thus rotated and the engine started.
The pressurized air is also used for other pneumatic devices 17 of the engine than the starting motors 1 a, 2a. The system is provided with an air supply duct 15 for supplying the air from the air tanks 13a, 13b to the other pneumatic devices 17. The system comprises a first connecting duct 1 1 for connecting the air supply duct 15 to the pneumatic system downstream from the first shut-off valve 5 and a second connecting duct 12 for connecting the air supply duct 15 to the pneumatic system downstream from the second shut-off valve 6. The point where each connecting duct 1 1 , 12 is connected to the pneumatic sys- tern is upstream from the respective starting valve 7, 8 for allowing flow to the other pneumatic devices when the starting motors 1 a, 2a are not used. In the embodiment of the figures, the connecting ducts 1 1 , 12 are connected to the starting air ducts 3, 4 between the shut-off valves 5, 6 and the air starters 1 , 2. However, the connecting ducts 1 1 , 12 could also be connected to the receiving sections 1 b, 2b of the air starters 1 , 2. Depending on which one of the air starters 1 , 2 is used, the air is supplied to the other devices 17 through one of the starting air ducts 3, 4. Each of the connecting ducts 1 1 , 12 is provided with a non-return valve 9, 10 for allowing flow into the air supply duct 15 but pre- venting flow from the air supply duct 15 to the starting air ducts 3, 4 and further to the air starters 1 , 2. Accidental pressurization and possible consequent activation of a wrong air starter 1 , 2 is thus prevented.
The embodiment of figure 2 works in a similar way as the embodiment of figure 1 . A difference between the embodiments is that in figure 2 the system is pro- vided with only one starting air tank 13. Both air starters 1 , 2 thus receive air from the same air tank 13. Instead of two shut-off valves 5, 6, the system is provided with a selector valve 16. The selector valve 16 allows flow only into one of the starting air ducts 3, 4 at a time. The selector valve 16 thus further increases the safety of the system, since it is not possible to pressurize both air starters 1 , 2 at the same time. The selector valve 16 can be operated in the normal operating conditions of the engine electrically, but for enabling starting of the engine also in case of loss of power or malfunctioning of the automation, the selector valve 16 needs to be operable also manually.
It will be appreciated by a person skilled in the art that the invention is not lim- ited to the embodiments described above, but may vary within the scope of the appended claims.

Claims

Claims
1 . A pneumatic system for a piston engine, which system comprises
- a first air starter (1 ) and a second air starter (2), each of the air starters (1 , 2) comprising a pneumatic starting motor (1 a, 2a) for rotating a crankshaft of an engine for starting the engine,
- a first starting air duct (3) for connecting the first air starter (1 ) to a pressure medium source (13, 13a, 13b),
- a second starting air duct (4) for connecting the second air starter (2) to a pressure medium source (13, 13a, 13b),
- valve means (5, 6, 16) for selectively allowing and preventing flow in the first starting air duct (3) and in the second starting air duct (4),
- a first starting valve (7) for selectively allowing and preventing pressure medium flow through the first starting motor (1 a),
- a second starting valve (8) for selectively allowing and preventing pres- sure medium flow through the second starting motor (2a),
- an air supply duct (15) for supplying pressure medium to other pneumatic devices (17) than the starting motors (1 a, 2a),
- a first connecting duct (1 1 ) for connecting the air supply duct (15) to the pneumatic system between the valve means (5, 16) and the pneumatic starting motor (1 a) of the first air starter (1 ), and
- a second connecting duct (12) for connecting the air supply duct (15) to the pneumatic system between the valve means (6, 16) and the pneumatic starting motor (2a) of the second air starter (2),
characterized in that each of the first connecting duct (1 1 ) and the second connecting duct (12) is provided with a non-return valve (9, 10) for preventing flow from the air supply duct (15) to the air starter (1 , 2).
2. A system according to claim 1 , characterized in that the system is provided with a first shut-off valve (5) that is arranged between a pressure medium source (13, 13a, 13b) and the first air starter (1 ), and with a second shut-off valve (6) that is arranged between a pressure medium source (13, 13a, 13b) and the second air starter (2).
3. A system according to claim 1 or 2, characterized in that the system is provided with a selector valve (16), which selector valve (16) allows flow from a pressure medium source (13, 13a, 13b) into only one of the starting air ducts (3, 4) at a time.
4. A system according to any of claims 1-3, characterized in that the system is provided with at least one control valve (14) for preventing flow through the starting motors (1 a, 2a) when a turning gear is engaged.
5. A system according to any of the preceding claims, characterized in that the first connecting duct (1 1 ) is connected to the first starting air duct (3) and the second connecting duct (12) is connected to the second starting air duct (4).
6. A system according to any of claims 1-4, characterized in that the first connecting duct (1 1 ) is connected to a receiving section (1 b) of the first air starter (1 ) and the second connecting duct (12) is connected to a receiving section (2b) of the second air starter (2).
EP13723532.1A 2012-05-10 2013-04-22 Pneumatic system for piston engine Active EP2847454B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20125501A FI20125501L (en) 2012-05-10 2012-05-10 Pneumatic system for a piston engine
PCT/FI2013/050444 WO2013167795A1 (en) 2012-05-10 2013-04-22 Pneumatic system for piston engine

Publications (2)

Publication Number Publication Date
EP2847454A1 true EP2847454A1 (en) 2015-03-18
EP2847454B1 EP2847454B1 (en) 2016-07-20

Family

ID=48464027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13723532.1A Active EP2847454B1 (en) 2012-05-10 2013-04-22 Pneumatic system for piston engine

Country Status (4)

Country Link
EP (1) EP2847454B1 (en)
CN (1) CN104271940B (en)
FI (1) FI20125501L (en)
WO (1) WO2013167795A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107709724A (en) * 2015-06-03 2018-02-16 瓦锡兰芬兰有限公司 Internal combustion piston engine, the method and control unit for starting internal combustion piston engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108621790A (en) * 2018-06-29 2018-10-09 袁菊花 The starter of vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1032694A (en) * 1988-05-30 1989-05-03 李明 Pneumatic starter
US5435125A (en) * 1994-06-15 1995-07-25 United Technologies Corporation Redundant engine starting system
JP5118541B2 (en) * 2008-04-08 2013-01-16 川崎重工業株式会社 ENGINE START METHOD AND START DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013167795A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107709724A (en) * 2015-06-03 2018-02-16 瓦锡兰芬兰有限公司 Internal combustion piston engine, the method and control unit for starting internal combustion piston engine
CN107709724B (en) * 2015-06-03 2020-09-08 瓦锡兰芬兰有限公司 Internal combustion piston engine, method for starting an internal combustion piston engine and control unit

Also Published As

Publication number Publication date
CN104271940B (en) 2016-06-29
WO2013167795A1 (en) 2013-11-14
CN104271940A (en) 2015-01-07
FI20125501L (en) 2013-11-11
EP2847454B1 (en) 2016-07-20

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