Patents Assigned to WÄRTSILÄ
  • LNG tank
    Patent number: 9702506
    Abstract: An LNG tank as disclosed can include an inner shell of stainless steel and an outer shell spaced at a distance from the inner shell, the inner and outer shells defining an isolation space therebetween. A double-walled pipe of stainless steel connected to the LNG tank can include an inner pipe. The outer wall of the pipe can be connected to the inner shell by a bellows-like pipe fitting welded to the outer wall of the pipe(s) and to the inner shell of the tank. The inner pipe for extending into a tank room can be connected to a valve in a valve block, and the outer wall of the pipe extending into the tank room can be welded to the valve block to provide a continuous secondary barrier for the inner pipe between the inner shell of the tank and the valve block.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: July 11, 2017
    Assignee: WARTSILA FINLAND OY
    Inventors: Sören Karlsson, Mathias Jansson, Martin Råholm, Ingvar Öst
  • METHOD OF OPERATING A POWER SYSTEM IN A MARINE VESSEL AND A SUPERVISING ARRANGEMENT FOR A POWER SYSTEM IN A MARINE VESSEL
    Publication number: 20170166289
    Abstract: A method of operating a power system in a marine vessel, which power system is operable with at least two operational modes, includes providing a restriction information map by assigning geographical areas with one or more predetermined operational restrictions set for the power system, comparing the location information of the vessel and the restriction information map, and in case the restriction information map includes one or more restrictions assigned to the current location, initiating an intensified supervision operation of the power system, during which data logging operation is initiated and maintained which comprises recording at predetermined interval at least current location information of the vessel, and a specification of used operational mode of the power system at the location and saving the recorded items in a memory media.
    Type: Application
    Filed: April 10, 2015
    Publication date: June 15, 2017
    Applicant: WARTSILA FINLAND OY
    Inventors: Tommy DAHLBERG, Stefano FURLAN, Magnus KRONHOLM, Arto RUONALA, Giuseppe SARAGO
  • Load sharing arrangement
    Patent number: 9673631
    Abstract: The aim of the invention is to use a separate device between the analog and digital communications lines to convert the digital load sharing information from the digital communication line to the analog communication line and vice versa. The device does not generate power itself for the load sharing and therefore does not disturb the load sharing of the generators on the both sides of the device. The device can be seen as a gate between the digital communication line and the analog communication line. The device simulates load situation of the generator/s connected to the digital communication line for load sharing with other generator/s connected to the analog communication line, and similarly it simulates load situation of the other generator/s connected to the analog communication line for load sharing with the generator/s connected to the digital communication line.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: June 6, 2017
    Assignee: Wartsila Finland OY
    Inventors: Tom Kaas, Ari Saikkonen
  • Arrangement for connecting a pipe to a LNG tank
    Patent number: 9664317
    Abstract: A connection having at least one double-walled pipe of stainless steel connected to an LNG tank is disclosed, the LNG tank having an inner shell of stainless steel and an outer shell spaced at a distance from the inner shell, the inner and outer shells defining an isolation space therebetween. The at least one double-walled pipe includes a common outer wall and at least one inner pipe. The outer wall of the pipe is connected to the inner shell of the tank in such a way that the outer wall and/or a pipe fitting of cold resistant material between the inner shell and the outer wall is arranged to compensate for changes in the length of the outer wall of the pipe and/or of the pipe fitting due to temperature differences between the outer wall of the pipe and the inner shell of the tank.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 30, 2017
    Assignee: WARTSILA FINLAND OY
    Inventor: Sören Karlsson
  • Method of arranging the lubrication of a steerable thruster of a marine vessel and a lubrication arrangement therefor
    Patent number: 9630693
    Abstract: The lubrication of a steerable thruster of a marine vessel is based on splash-type lubrication at the pod and full bath lubrication in the stembox and in the shank. The lubrication oil enters the pod both from the stembox and the shank via a constriction and directly from the oil tank. The oil is further circulated from the pod to the oil tank by means of pumps.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: April 25, 2017
    Assignee: WARTSILA FINLAND OY
    Inventors: Arnoud De Kruijf, Rik Roemen, Aad Van Der Kam, Bart Van Der Ven
  • Lip seal
    Patent number: 9599227
    Abstract: A lip seal includes: a lip part (1) forming a ring shape alone or with plural members and provided in sliding contact with the entire periphery of a surface of a shaft (0); an elastic arm part (2) and a flexible wall (3) supporting the lip part (1) at a sliding contact position; key parts (4) connecting the elastic arm part (2) and the flexible wall (3) to a housing (10), respectively, and a pressure regulation chamber (A) forming a ring shape alone or with plural members and using the elastic arm part (2) and the flexible wall (3) as partition walls. The flexible wall (3) is deformed by the increase and decrease in pressure in the pressure regulation chamber (A) to change the lip part (1) at least radially.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 21, 2017
    Assignee: WARTSILA JAPAN LTD.
    Inventors: Nobuhiro Himeno, Mashiba Kyogoku, Masakazu Tamura
  • Arrangement, a sealing assembly, a casing flange and a spacer for sealing the propeller shaft of a marine vessel
    Patent number: 9587513
    Abstract: A propeller shaft of a marine vessel is supported by bearing means within a stern tube or frame. The stern tube or frame has an aft end provided with a sealing assembly for sealing the propeller shaft. The sealing assembly and the stern tube or frame have at least one leakage monitor line for monitoring the condition of the sealing assembly. The at least one leakage monitor line is provided with a circumferentially extending channel section.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 7, 2017
    Assignee: WARTSILA FINLAND OY
    Inventor: Craig Hatfull
  • Pipe connector and fuel injection system
    Patent number: 9506436
    Abstract: A pipe connector comprising a connector body, a first fitting connectable to a first double wall pipe, the first fitting comprising a first portion connectable to an inner flow space and a second portion connectable to an outer flow space of the first double wall pipe, a second fitting connectable to a second pipe, a third fitting comprising a first portion and a second portion, which first portion is connectable to the third pipe, and a flow channel arranged in the connector body for interconnecting the first portion of the first fitting, the second fitting and the first portion of the third fitting.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: November 29, 2016
    Assignee: Wartsila Finland Oy
    Inventor: Vesa Voutilainen
  • METHOD AND SYSTEM FOR STORAGE AND TRANSPORT OF LIQUEFIED PETROLEUM GASES
    Publication number: 20160281929
    Abstract: A method for storage and transport of LPG on LPG carriers, in particular two cargoes of different LPG types on same shipment, having reliquefaction units in which vaporized gases are condensed and then returned into at least one cargo tank for the respective LPG cargo type. The method is further comprising: using the reliquefaction units, at a minimum one running, as to condense vapour from the first cargo type; passing the condensed vapour through a heat exchanger; simultaneously flowing vapour from the second cargo type through the heat exchanger as to condense vapour by means of heat exchanging with the condensed vapour; and returning the condensed vapours leaving the heat exchanger back into the respective cargo types. The present invention is also disclosing a system for storage and transport of LPG on LPG carriers.
    Type: Application
    Filed: March 29, 2016
    Publication date: September 29, 2016
    Applicant: WÄRTSILÄ OIL & GAS SYSTEMS AS
    Inventor: Carl Jørgen RUMMELHOFF
  • METHOD AND SYSTEM FOR STORAGE AND TRANSPORT OF LIQUEFIED PETROLEUM GASES
    Publication number: 20160281930
    Abstract: A method for storage and transport of LPG on LPG carriers, in particular two cargoes of different LPG types on same shipment, having reliquefaction units in which vaporized gases are condensed and then returned into at least one cargo tank for the respective LPG cargo type. The method is further comprising: using the reliquefaction units, at a minimum one running, as to condense vapour from the first cargo type; passing the condensed vapour through a heat exchanger; simultaneously flowing vapour from the second cargo type through the heat exchanger as to condense vapour by means of heat exchanging with the condensed vapour; and returning the condensed vapours leaving the heat exchanger back into the respective cargo types. The present invention is also disclosing a system for storage and transport of LPG on LPG carriers.
    Type: Application
    Filed: March 29, 2016
    Publication date: September 29, 2016
    Applicant: Wartsila Oil & Gas Systems AS
    Inventor: Carl Jørgen RUMMELHOFF
  • Closing cover for closing an opening in a hull of a marine vessel and method of facilitating access to a lower part of a hoisting chamber
    Patent number: 9440708
    Abstract: A closing cover for closing an opening in a hull of a marine vessel, includes a first part and a second part. The second part has a cylindrical periphery wall and a water tight inner section bordered by the periphery wall and the first part has a flange plate portion extending radially over the periphery wall of the second part, in which the first part and the second part are removably attached to each other. The second part is provided with a sealing system and attaching pins at its outer cylindrical surface.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: September 13, 2016
    Assignee: WÄRTSILÄ NETHERLANDS B.V.
    Inventor: Aad Van Der Kam
  • Fuel injection unit, a method of operating such and an internal combustion engine
    Patent number: 9303610
    Abstract: A novel fuel injection unit for a large internal combustion engine includes a common rail fuel system. The fuel injection unit of the invention is constructed of at least a high pressure fuel accumulator specific for the fuel injection unit, a flow fuse, a first fuel injection valve with a control valve, and a second fuel injection valve with a control valve. The first fuel injection valve is a smaller one used for injecting at most 30% of the fuel required in full load operation of a diesel mode.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 5, 2016
    Assignee: Wärtsilä Finland Oy
    Inventor: David Jay
  • Retractable thruster unit for a marine vessel
    Patent number: 9266595
    Abstract: A novel retractable thruster unit for a marine vessel using a tunnel thruster includes a nozzle having an end, the end being provided with two closing plates, a top closing plate, and a bottom closing plate. The closing plates are arranged 180 degrees apart on opposite sides of the axis of the propeller and extend substantially axially from the end of the nozzle.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: February 23, 2016
    Assignee: Wärtsilä Finland Oy
    Inventor: Aad Van Der Kam
  • Propulsion control system for ship with a display
    Patent number: D754207
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: April 19, 2016
    Assignee: Wartsila Finland Oy
    Inventor: Davide Lamparelli
  • Propulsion control system for ship with a display
    Patent number: D755246
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 3, 2016
    Assignee: WARTSILA FINLAND OY
    Inventor: Davide Lamparelli
  • Propulsion control system for ship with a display
    Patent number: D755247
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 3, 2016
    Assignee: WARTSILA FINLAND OY
    Inventor: Davide Lamparelli
  • Propulsion control system for ship with a display
    Patent number: D757117
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 24, 2016
    Assignee: WARTSILA FINLAND OY
    Inventor: Davide Lamparelli
  • Display screen with graphical user interface
    Patent number: D763894
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 16, 2016
    Assignee: WARTSILA FINLAND OY
    Inventor: Davide Lamparelli
  • Display screen with graphical user interface
    Patent number: D764516
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 23, 2016
    Assignee: WARTSILA FINLAND OY
    Inventor: Davide Lamparelli
  • Propulsion control system for ship with a display
    Patent number: D782538
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 28, 2017
    Assignee: WARTSILA FINLAND OY
    Inventor: Davide Lamparelli