Patents Assigned to WÄRTSILÄ
  • Scrubber unit arrangement
    Patent number: 8840713
    Abstract: The invention relates to a scrubber unit arrangement for cleaning exhaust gas. The arrangement comprises a scrubber unit for receiving a flow of exhaust gas, a pump means for supplying a scrubbing medium to the scrubber unit from a source of scrubbing medium, and means for discharging scrubbing medium from the scrubber unit. In order to provide an energy efficient scrubbing process, the scrubber unit arrangement further comprises a turbine unit, which is arranged to receive discharged scrubbing medium from the scrubber unit. Scrubbed exhaust gas is separately discharged from the scrubber unit.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: September 23, 2014
    Assignee: Wartsila Finland Oy
    Inventor: Ari Suominen
  • METHOD AND ARRANGEMENT FOR AVOIDING ANODE OXIDATION
    Publication number: 20140248547
    Abstract: An arrangement for high temperature fuel cell system for substantially reducing the amount of purge gas in an emergency shut-down situation. The arrangement includes a known volume for containing a pneumatic actuation pressure, the known volume including at least one discharge route for designed discharge rate, at least one pressure source providing pressure capable of performing the pneumatic actuation, at least one purge gas source having a gas overpressure capable of displacing residual reactants in the fuel cell system. Purge gas is discharged through the discharge route causing pressure decline in the known volume, accomplishing a designed time delay in state change of at least one pneumatically actuated valve, to reduce or close down completely emergency shutdown actuated flow of the purge gas into the fuel cell system piping after the designed time delay.
    Type: Application
    Filed: August 31, 2012
    Publication date: September 4, 2014
    Applicant: Wartsila Finland Oy
    Inventors: Tero Hottinen, Kim Åström, Tuomas Hakala
  • Power supply system
    Patent number: 8816524
    Abstract: This invention relates to a power supply system comprising at least two drive units (3) having two power inputs and at least one power generator (G) providing electric power at a chosen system frequency and voltage. The system comprising a transformer unit (LLC) having a first and a second connection points (1,2), at least one of which being connected to a power generator (G), wherein the two inputs of each drive unit is connected to the first and the second connection point (1,2) of the transformer unit (LLC), and the transformer unit being adapted to provide a chosen phase shift between said inputs at the chosen system frequency and voltage.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: August 26, 2014
    Assignee: Wartsila Norway AS
    Inventors: Egil Hystad, Svein Magne Djuve
  • Pressure control in the common rail system of a combustion engine
    Patent number: 8744725
    Abstract: The apparatus and method according to the invention comprise a controller (7) to form a control signal, which controller is arranged to receive pressure data on the CR system, and into which controller pressure reference data is set. In addition, the apparatus also comprises a module (9) to form an internal pressure reference value to replace the set pressure reference value when forming the control signal.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: June 3, 2014
    Assignee: Wartsila Finland Oy
    Inventors: Tom Troberg, Tom Kaas
  • Method for operating an LNG fuelled marine vessel and a corresponding marine vessel
    Patent number: 8739719
    Abstract: A method for operating an LNG fuelled marine vessel having a propulsion system, a power plant and an LNG storage tank, whereby LNG is supplied as a gas fuel from the LNG storage tank to the power plant. The marine vessel deploys a fixed LNG storage tank and a removable LNG storage tank on board the marine vessel. In order to facilitate bunkering, the removable LNG storage tank is removed and replaced by another removable LNG storage tank at a bunkering facility.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: June 3, 2014
    Assignee: Wartsila Finland Oy
    Inventors: Leif Backlund, Mathias Jansson
  • Protection arrangement of an electric power system
    Patent number: 8736090
    Abstract: The inventive protection arrangement of an electric power system comprises a relay arrangement (12) for measuring current, voltage or both of an electric grid (15). The relay arrangement is adapted to detect over-current, under-voltage or both. The protection arrangement comprises also a speed/load controller (16) that is in connection with the relay arrangement (12). The speed/load controller is arranged to drive a prime mover (11) of a generator (10) set as a response for the said detection. The speed/load controller (16) is connectable with said prime mover (11). In more detail the controller (16) is arranged to drive power output of the prime mover (11) to a lower level when over-current, under-voltage or both is detected.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: May 27, 2014
    Assignee: Wartsila Finland Oy
    Inventor: Vesa Riihimäki
  • Electronic DC circuit breaker
    Patent number: 8716905
    Abstract: The present invention relates to a device for connecting and breaking DC power comprising an input DC power (DC-In) arranged to be connected to a circuit board (1) and to the collector port (C) of an insulated gate bipolar transistor (IGBT). The insulated gate bipolar transistor (IGBT) is arranged to be connected to the circuit board (1). An output DC power (DC-Out) is arranged to be connected to the emitter port (E) of the insulated gate bipolar transistor (IGBT) and the circuit board (1). The circuit board (1) is arranged to be connected to the gate port (G) of the insulated gate bipolar transistor (IGBT) and the circuit board (1) is designed to monitor predetermined conditions of the input and output DC power (DC-In, DC-Out).
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: May 6, 2014
    Assignee: Wartsila Norway AS
    Inventor: Terje Rogne
  • Turbocharger cleaning arrangement
    Patent number: 8667796
    Abstract: An arrangement in connection with a piston engine provided with a turbocompressor, which arrangement comprises a flow duct for conveying combustion air pressurized by a compressor to cylinders of the piston engine, an exhaust gas duct for conveying exhaust gas from the piston engine to a turbine, and means adapted in conjunction with the turbine for feeding a cleansing agent to the turbine. There are feeding means arranged in connection with the exhaust gas duct for introducing air and/or water into the exhaust gas duct for cooling the exhaust gas.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: March 11, 2014
    Assignee: Wartsila Finland Oy
    Inventor: Arto Järvi
  • Control method and arrangement for selective catalytic reduction
    Patent number: 8652410
    Abstract: A method for controlling a selective catalytic reduction system (SCR) exploiting a set of predetermined trigger events and a set point for the NOx concentration, and an arrangement for SCR. At the occurrence of a trigger event, NOx concentration measurement downstream from the catalyst elements is started and the difference between the measured concentration and the set point is determined. If the difference is negative, the dosing of the reducing agent is decreased. If the difference is positive, the dosing of the reducing agent is increased and after system stabilization a new measurement is started. If the measured value is below the previous measured value, the same dosing is maintained. If the measured value is above the previous measured value, the dosing is decreased with an amount greater than the increase after the previous measurement.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: February 18, 2014
    Assignee: Wartsila Finland Oy
    Inventors: Daniel Nordberg, Raine Peltokoski
  • ARRANGEMENT FOR AND A METHOD OF MAINTAINING THE ALIGNMENT OF AN INTERNAL COMBUSTION ENGINE, AND A METHOD OF ALIGNING AN INTERNAL COMBUSTION ENGINE AND MAINTAINING ITS ALIGNMENT
    Publication number: 20140041616
    Abstract: An arrangement and method for maintaining an alignment of an internal combustion engine by utilizing an arrangement includes a number of fluid springs by means of which the engine is mounted on a foundation thereof, control valves arranged in communication with each fluid spring, at least three position sensors in communication with the engine, and an electronic control unit. The electric control unit is provided with preset engine position values. The method includes collecting engine position information to the electric control unit, comparing the position information to preset position values, determining, if the position information differs from the preset position values, such control valves that need to be operated, calculating the corrective measures, and giving corrective instructions to the control valves.
    Type: Application
    Filed: April 16, 2012
    Publication date: February 13, 2014
    Applicant: WARTSILA FINLAND OY
    Inventors: Tomas Sodo, Jan Holmberg
  • Machinery arrangement for marine vessel
    Patent number: 8647162
    Abstract: The invention relates to a machinery arrangement for a marine vessel (1), which machinery arrangement (2) comprises a combustion unit (3), an exhaust gas duct assembly (4), which includes a first branch pipe (41) and a second branch pipe (42) and is connected to the combustion unit for receiving an exhaust gas flow and for leading the exhaust gas flow to the atmosphere, and an exhaust gas cleaning system (5) arranged in a flow direction of exhaust gas. In order to achieve an improved cleaning of the exhaust gas, a fan unit (6) and a first valve means (7) is provided in flow connection with the first branch pipe (41), which is connect to the exhaust gas cleaning system (5).
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: February 11, 2014
    Assignee: Wartsila Finland Oy
    Inventors: Torbjörn Henriksson, Marko Lehikoinen
  • EXHAUST GAS RECEIVER, INTERNAL COMBUSTION ENGINE AND METHOD FOR SELECTIVE CATALYTIC REDUCTION
    Publication number: 20140026542
    Abstract: An exhaust gas receiver that is connectable to an internal combustion engine for receiving exhaust gases from the engine, the exhaust gas receiver comprising a receiver chamber, at least one exhaust inlet, at least one exhaust outlet, and a reducing agent duct, at least a portion of the reducing agent duct being arranged inside the receiver chamber for heating the reducing agent before the reducing agent is mixed with the exhaust gases. The invention also concerns an internal combustion engine and a method for selective catalytic reduction.
    Type: Application
    Filed: February 1, 2012
    Publication date: January 30, 2014
    Applicant: Wartsila Finland Oy
    Inventors: Jukka Sadinmaki, Ari Suominen, Anu Solla, Klaus Widjeskog
  • MASS DAMPER
    Publication number: 20140008163
    Abstract: A tuned mass damper comprising a frame, at least one bendable spring element being connected from its ends to the frame, and at least one mass element being connected to the spring element at a distance from the ends of the spring element, at least one movable spring support element for adjusting the tuning frequency of the damper, and means for moving the spring support element.
    Type: Application
    Filed: November 23, 2011
    Publication date: January 9, 2014
    Applicant: WARTSILA FINLAND OY
    Inventors: Heikki Mikonaho, Hannu Tienhaara, Peter Andersson, Paul Klinge, Petteri Kokkonen, Hannu Sainio
  • PIPE CONNECTOR AND FUEL INJECTION SYSTEM
    Publication number: 20140007844
    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: Application
    Filed: January 24, 2012
    Publication date: January 9, 2014
    Applicant: WARTSILA FINLAND OY
    Inventor: Vesa Voutilainen
  • FUEL INJECTION SYSTEM
    Publication number: 20140000562
    Abstract: A fuel injection system for a reciprocating engine, comprising injectors for injecting pressurized fuel into the cylinders of the engine, a high pressure pump for pressurizing fuel to be injected, a supply pipe for feeding fuel from the high pressure pump toward the injectors and feed pipes for feeding fuel from the supply pipe to the injectors. The first ends of the feed pipes are connected to the injectors and the second ends to the supply pipe. Each fuel injector is provided with a pressure accumulator.
    Type: Application
    Filed: January 24, 2012
    Publication date: January 2, 2014
    Applicant: WARTSILA FINLAND OY
    Inventors: Kjell Eklund, Mikael Troberg, Anton Wintersteller, Vesa Voutilainen
  • Method of operating turbocharged piston engine
    Patent number: 8602721
    Abstract: Invention relates to method of operating turbocharged piston engine including the steps of running the engine during a period, shutting down the engine, and restarting the engine. After a first time interval from shutting down the engine, and while a turbine and compressor parts of the turbocharger are rotating, a cleaning agent is introduced into the stream of gas flowing in a flow channel upstream the turbine part during a second time interval prior to restarting the engine.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 10, 2013
    Assignee: Wartsila Finland Oy
    Inventor: Branimir Andonov
  • A SCRUBBER SYSTEM FOR TREATING EXHAUST GAS IN A MARINE VESSEL AND METHOD OF TREATING EXHAUST GAS IN SCRUBBER SYSTEM OF A MARINE VESSEL
    Publication number: 20130319236
    Abstract: A scrubber system for treating exhaust gas in a marine vessel with a water based solution includes a first scrubber unit and a second scrubber unit, an exhaust gas inlet in the first scrubber unit and an exhaust gas outlet in the second scrubber unit and a second conduit section connecting the first scrubber unit to the second scrubber unit, a first scrubbing medium circuit and a second scrubbing medium circuit. The first scrubber medium circuit is provided with a source of scrubbing solution having a first connection to an outside of a hull of the vessel beneath the water line of the vessel and the second scrubber medium circuit is provided with a source of scrubbing solution having a source of fresh water in the vessel.
    Type: Application
    Filed: February 15, 2012
    Publication date: December 5, 2013
    Applicant: Wartsila Finland Oy
    Inventor: Ari Suominen
  • RETRACTABLE THRUSTER UNIT FOR A MARINE VESSEL
    Publication number: 20130298816
    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: Application
    Filed: December 13, 2011
    Publication date: November 14, 2013
    Applicant: WARTSILA FINLAND OY
    Inventor: Aad Van Der Kam
  • Fuel injector valve
    Patent number: 8579253
    Abstract: A fuel injector valve (1) of a piston engine, which comprises a fuel chamber (3) for the fuel to be injected, a valve needle (9) for guiding the fuel injection from the fuel chamber (3) into the cylinder (4) of the engine, a spring (10) for pressing the valve needle (9) towards the closed position, and a piezoelectric actuator (11) for guiding the valve needle (9). Additionally, the injector valve (1) comprises a drawbar (22), which is loosely coupled to the valve needle (9), a second drawbar (23), which is attached to the piezoelectric actuator (11) and loosely coupled to the drawbar (22), and that the injector valve (1) comprises a second spring (24) fitted in connection with the drawbar (22) for pressing the valve needle (9) towards the closed position and a third spring (25) fitted in connection with the second drawbar (23) for pressing the valve needle (9) towards the closed position.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 12, 2013
    Assignee: Wartsila Finland Oy
    Inventors: Wiliam Brace, Pekka Hautala, Jukka Kiijarvi, Markus Niemi
  • FUEL INJECTION APPARATUS, A PISTON ENGINE AND METHOD OF OPERATING A PISTON ENGINE
    Publication number: 20130284151
    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: Application
    Filed: December 5, 2011
    Publication date: October 31, 2013
    Applicant: WARTSILA FINLAND OY
    Inventors: David Jay, Holmer Slocinski