Patents Assigned to WÄRTSILÄ
  • HEAT INSULATION STRUCTURE
    Publication number: 20180328254
    Abstract: The heat insulation structure for a component of an exhaust system of a piston engine is arrangeable around the component such that an air space is formed between the component and the heat insulation structure, and includes an outer shell layer a middle shell layer that is arranged inside the outer shell layer, and a first inner shell layer that is arranged inside the middle shell layer. A first air gap is arranged between the outer shell layer and the middle shell layer, a first insulation layer is arranged between the middle shell layer and the first inner shell layer, and the outer shell layer is provided with venting apertures for natural ventilation of the first air gap.
    Type: Application
    Filed: November 18, 2015
    Publication date: November 15, 2018
    Applicant: Wärtsilä Finland Oy
    Inventors: Pasi Lehtonen, Christer Nygård, Robert Lundström, Heikki Suurholma, Juha Hakala, Juha Niemi, Arto Aho, Georg Eriksson, Osmo Suomivirta
  • Method of handling a unit in a marine vessel and an assembly in a marine vessel
    Patent number: 10124860
    Abstract: A method of handling a unit arranged in a watertight hoisting chamber opening into a hull of a vessel is provided. The unit is adapted to extend into the water below the vessel when installed at its mounted position. The unit is clamped in its mounted position by clamping means and releasing fixing means fix the unit into its mounted position while holding the unit clamped in position. The hoisting chamber is at least partly flooded, the clamping means are simultaneously released and the unit lifted from its mounted position by applying a lifting force to the unit by lifting devices, and the unit is hoisted away from the hoisting chamber.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: November 13, 2018
    Assignee: WARTSILA NETHERLANDS B.V.
    Inventor: Aad Van Der Kam
  • A METHOD OF PREPARING A LIP-TYPE SHAFT SEAL FOR, A METHOD OF INSTALLING A LIP-TYPE SHAFT SEAL ON A SHAFT OF AN UNDERWATER APPLICATION AND A LIP-TYPE SHAFT SEAL THEREFOR
    Publication number: 20180320654
    Abstract: The present invention relates to a method of preparing a lip-type shaft seal for, a method of installing a lip-type shaft seal on a shaft of an underwater application, and a lip-type shaft seal therefor. Exemplary embodiments, can be especially advantageous as they can provide a lip-type shaft seal with a point of noncontinuity having such form-locking elements that the actual installation of the seal around the shaft under water may be performed by using the form-locking elements without the use of a habitat.
    Type: Application
    Filed: November 9, 2015
    Publication date: November 8, 2018
    Applicant: WÄRTSILÄ FINLAND OY
    Inventors: Henric ANNELUND, Henrik LUNDGREN
  • MARINE VESSEL PERFORMANCE DIAGNOSTICS
    Publication number: 20180304969
    Abstract: An exemplary method for a marine vessel having a propeller mounted to a rotatable shaft for converting rotative shaft power transferred from the shaft to the propeller into thrust to propel the marine vessel across water, includes obtaining measurement values that are descriptive of the shaft power, the thrust and speed through water of the marine vessel; separately estimating at least one of first excess shaft power caused by fouling of the propeller and second excess shaft power caused by fouling of the hull of the marine vessel; and issuing an indication of propeller cleaning in dependence of the first excess shaft power and hull cleaning in dependence of the second excess shaft power.
    Type: Application
    Filed: November 26, 2015
    Publication date: October 25, 2018
    Applicant: WÄRTSILÄ FINLAND OY
    Inventor: Ronald Van Miert
  • Apparatus and a method for wireless transmission of power between DC voltage sources
    Patent number: 10097045
    Abstract: An apparatus for wireless transmission of power from a DC voltage source to a DC voltage load, includes: one primary coil coupled with one secondary coil, the primary coil and the secondary coil each equipped with at least one capacitor, so that the primary coil resonates at a frequency that at least equal the secondary coil resonant frequency; the resonant coils are mutually moveable; a converter that converts the DC voltage at a primary side to an AC voltage of controllable magnitude and frequency; at least one rectifier at the secondary side converts the AC voltage at the terminals of the secondary coil to a DC voltage at the load on the secondary side; and a control system that regulates the power flow by changing the magnitude and frequency of the AC voltage at the terminals of the primary resonant coil.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: October 9, 2018
    Assignee: WARTSILA NORWAY AS
    Inventor: Giuseppe Guidi
  • Digital waste gate valve arrangement and method of operating a digital waste gate valve arrangement in an internal combustion engine
    Patent number: 10087825
    Abstract: A digital waste gate arrangement in an internal combustion piston engine has at least one turbocharger with a compressor part and a turbine part. A flow control unit has more than two individually controllable on-off valve units, and a pneumatic actuator system is arranged to control each on-off valve individually. At least one control gas inlet port is in connection with the pneumatic actuator system, which control gas inlet port is arranged in connection with a downstream side of a compressor part of the turbocharger via a control gas passage. The control gas for operating the flow control unit is arranged available for the pneumatic actuator sys-tem through the control gas passage.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: October 2, 2018
    Assignee: WÄRTSILÄ FINLAND OY
    Inventor: Janne Maenpaa
  • Method of filling a fuel tank with liquefied gas and liquefied gas system
    Patent number: 10088108
    Abstract: A method for filling a fuel tank with liquefied gas includes liquefied gas being brought into the tank so that gas in introduced to a lower section of the tank below the surface of the liquefied gas in the tank, and during a first phase of the filling procedure while gas is introduced to a lower section of the tank the pressure of the tank is maintained below a predetermined set pressure by spraying of liquefied gas into a gas space in the upper section of the tank above the surface of the liquefied gas in the tank. At a predetermined state of the filling procedure a second phase of the procedure is initiated during which the spraying liquefied gas into a gas space in the upper section of the tank is decreased and the second phase is practiced until a predetermined filling stage of the tank is reached.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 2, 2018
    Assignee: WÄRTSILÄ FINLAND OY
    Inventors: Mathias Jansson, Soren Karlsson
  • A FUEL TANK ARRANGEMENT OF A MARINE VESSEL
    Publication number: 20180266628
    Abstract: The present invention relates to a fuel tank arrangement of a marine vessel including a fuel tank for Liquefied Natural Gas, the fuel tank having a shell, a heat insulation in connection therewith, connections for a pipeline for bunkering LNG to the fuel tank, a pipeline for taking boil-off gas from the fuel tank and a pipeline for taking LNG from the fuel tank, and a deep well pump for pumping LNG from the tank to the pipeline, wherein at least one recess is extending inwardly from the shell and being arranged on top of the fuel tank, the deep well pump being installed in the at least one recess.
    Type: Application
    Filed: September 28, 2015
    Publication date: September 20, 2018
    Applicant: WÄRTSILÄ FINLAND OY
    Inventors: Sören KARLSSON, Frank HARTEVELD, Frans LAUNONEN, Piero ZOGLIA
  • Control of an internal combustion engine
    Patent number: 10072599
    Abstract: An internal combustion engine uses gaseous main fuel and liquid pilot fuel and has a plurality of cylinders and an engine controller capable of adjusting a burning state of each cylinder through fuel regulation, including fuel cut off, upon occurrence of abnormal combustion. A method of operating the internal combustion engine includes, upon occurrence of abnormal combustion in a cylinder in a gaseous mode, cutting off the main fuel into only the cylinder and the fuel injection is kept partially active with a pilot fuel injected by a pilot nozzle of the cylinder.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: September 11, 2018
    Assignee: WÄRTSILÄ FINLAND OY
    Inventors: Christer Hattar, Fredrik Östman, Patrik Fors, Ulf Åstrand
  • Arrangement for sealing a propeller shaft of a marine vessel and a method of controlling the operation thereof
    Patent number: 10065724
    Abstract: An arrangement for sealing a propeller shaft of a marine vessel are specifically applicable in preventing oil leakage via propeller shaft sealing in cases where the draught of a marine vessel is, for some reason, reduced beyond its ordinary value.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: September 4, 2018
    Assignee: WARTSILA FINLAND OY
    Inventors: Arnoud De Kruijf, Rik Roemen, Minoru Takayasu, Bart Van Der Ven, Joost Van Eijnatten, Masahiko Yotsuyanagi
  • Measurement apparatus and measurement method for determining a composition of a fluid for a reciprocating piston internal combustion engine
    Patent number: 10048166
    Abstract: Disclosed is a monitoring apparatus for monitoring a state of wear of a component of a reciprocating piston internal combustion engine wherein an oil collection device is provided for the collection of lubrication oil from the cylinder so that a predetermined measured quantity of lubrication oil is suppliable from the cylinder to a measurement device.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: August 14, 2018
    Assignee: Wärtsilä Schweiz AG
    Inventors: Francesco Micali, Matthias Stark, Markus Weber
  • Method for producing an article having a cavity
    Patent number: 10040114
    Abstract: A method for producing an article (1) having a cavity (4), in which method a mould (2) provided with a core (3) is filled with article material, the article material is hardened around the core (3) to form the article (1), and the core (3) is removed from the solidified article (1). The core (3) is made of yttria tetragonal zirconia polycristal material (Y-TZP) or partially stabilized zirconium (PSZ), and after the hardening phase the core (3) is exposed to a steam atmosphere, after which the core (3) is removed from the article (1).
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: August 7, 2018
    Assignee: WARTSILA FINLAND OY
    Inventor: Jarkko Ilari Laine
  • Sealing arrangement for an underwater mountable thruster of a marine vessel
    Patent number: 10018275
    Abstract: A sealing arrangement is used when mounting a thruster in a well box attached to a hull of a marine vessel. The well box has an axis, a bottom flange, a top flange, an annular wall therebetween and hoisting pipes fastened parallel with the axis to the bottom flange radially outside the annular wall. Both the well box and a mounting flange have at least one surface acting as a sealing surface between the well box and the thruster. At least one of the surfaces has a groove for a seal for preventing water from entering the well box. The well box has a rotationally symmetric wall with an internal guide surface and the mounting flange of the thruster has an axially extending rotationally symmetric part provided with an outer surface having means for sealing the mounting flange in relation to the well box.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 10, 2018
    Assignee: WÄRTSILÄ NETHERLANDS B.V.
    Inventors: Albert Drost, Jeroen Van Loon, Davor Bilic, Jan Kees De Bruin
  • Method and system for storage and transport of liquefied petroleum gases
    Patent number: 10006589
    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 vapor from the first cargo type; passing the condensed vapor through a heat exchanger; simultaneously flowing vapor from the second cargo type through the heat exchanger as to condense vapor by means of heat exchanging with the condensed vapor; and returning the condensed vapors 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: Grant
    Filed: March 29, 2016
    Date of Patent: June 26, 2018
    Assignee: WÄRTSILÄ OIL & GAS SYSTEMS AS
    Inventor: Carl Jørgen Rummelhoff
  • Fuel injection apparatus, a piston engine and method of operating a piston engine
    Patent number: 10001097
    Abstract: A fuel injection apparatus for a piston engine includes a fuel injector body in which an injector needle is provided, which injector needle is arranged to prevent or allow fuel injection flow from the injection apparatus based on the position of the injector needle. The position is effected by a pressurized control fluid so that by applying the pressurized control fluid the needle may be urged towards its closed position and by reducing the pressurized control fluid the needle may be allowed to move away from its closed position. The injection apparatus includes a flow path for the control fluid, wherein the flow path for the control fluid comprises a restriction section providing a restriction effect to the control fluid flow. The restriction section includes at least one temperature-effected member providing a temperature-dependent restriction effect.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: June 19, 2018
    Assignee: WARTSILA FINLAND OY
    Inventors: David Jay, Holmer Slocinski
  • INLINE SCRUBBER WITH DUAL WATER SYSTEM
    Publication number: 20180149054
    Abstract: A method for dual water scrubbing and an in-line dual water scrubber for gas cleaning onboard a vessel are disclosed. The in-line dual water scrubber includes a vertical extended body, a gas inlet, and a gas outlet. The gas inlet is underlying in the lower section of the extended body and the gas outlet is overlying in the upper section of the extended body. A first underlying scrubbing section, and a second scrubbing section in an upper section of the extended body are provided. One or more liquid collectors are arranged above one or more first scrubbing liquid sprayers. The liquid collector is arranged for collecting one or more second scrubbing liquid and for flow through of a vertical upwards flowing gas-flow from the inlet to the outlet.
    Type: Application
    Filed: April 21, 2016
    Publication date: May 31, 2018
    Applicant: WÄRTSILÄ MOSS AS
    Inventors: Jan Gunnar GANNEFORS, Per CLAUSEN
  • AN ACOUSTIC ATTENUATOR FOR DAMPING PRESSURE VIBRATIONS IN AN EXHAUST SYSTEM OF AN ENGINE, AN ACOUSTIC ATTENUATION SYSTEM USING THE ATTENUATORS, AND METHOD OF DAMPING PRESSURE VIBRATIONS IN AN EXHAUST SYSTEM OF AN ENGINE
    Publication number: 20180149052
    Abstract: An acoustic attenuator for damping pressure vibrations in an exhaust system of an engine, the acoustic attenuator having a body which is provided with a gas inlet and a gas outlet at opposite ends thereof, and a gas passage duct arranged between the inlet and the outlet inside the body, where in the body encloses a first resonator chamber and a second resonator chamber. The body is provided with a common inlet communicating with the first and the second resonator chambers, and the resonator chambers are arranged to extend from the common inlet towards the opposite ends of the body.
    Type: Application
    Filed: May 25, 2015
    Publication date: May 31, 2018
    Applicant: WÄRTSILÄ FINLAND OY
    Inventors: Esa NOUSIAINEN, Jukka TANTTARI
  • Method and system for storage and transport of liquefied petroleum gases
    Patent number: 9982844
    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 (300, 400) in which vaporized gases are condensed and then returned into at least one cargo tank (100) for the respective LPG cargo type. The method is further comprising: using the reliquefaction units (300, 400), at a minimum one running, as to condense vapor from the first cargo type; passing the condensed vapor through a heat exchanger (500); simultaneously flowing vapor from the second cargo type through the heat exchanger (500) as to condense vapor by means of heat exchanging with the condensed vapor; and returning the condensed vapors 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: Grant
    Filed: May 3, 2010
    Date of Patent: May 29, 2018
    Assignee: WÄRTSILÄ OIL & GAS SYSTEMS AS
    Inventor: Carl Jørgen Rummelhoff
  • CHARGE AIR COOLER ARRANGEMENT
    Publication number: 20180135509
    Abstract: The charge air cooler arrangement for a piston engine includes an air cooler housing, a charge air cooler, which is arranged inside the air cooler housing, and an air duct that is connected to the air cooler housing for introducing charge air into the charge air cooler. The air duct is configured to protrude into the air cooler housing and to be attached to the charge air cooler.
    Type: Application
    Filed: June 10, 2015
    Publication date: May 17, 2018
    Applicant: WÄRTSILÄ FINLAND OY
    Inventors: Juho SANDBERG, Janne MÄKI
  • Screen display for a propulsion control system for ship
    Patent number: D826278
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 21, 2018
    Assignee: Wartsila Finland Oy
    Inventor: Davide Lamparelli