Patents by Inventor Ulf Carlsson

Ulf Carlsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230182095
    Abstract: The invention relates to a method for controlling a flow generator (1) in a tank (20) configured for housing a liquid comprising solid matter, the flow generator (1) comprising an impeller and being located at a height (h-mixer) in the tank (20) and the tank (20) having a predetermined maximum filling height (h-max), wherein the flow generator (1) is configured to be operated at a variable operational speed (n) and the demand of operational speed (n-demand) is dependent on the present liquid level height (h-present) in the tank (20), wherein a max operational speed (n-max) of the flow generator (1) is the operational speed required when the liquid level in the tank (20) is equal to the maximum filling height (h-max), the present operational speed (n-present) being set equal to the demand of operational speed (n-demand) of the flow generator (1) that is determined using the formula: ( n - present ) = ( n - demand ) = ( n - max ) [ ( h - max ) / ( h - present ) ] ^ a at lea
    Type: Application
    Filed: May 19, 2021
    Publication date: June 15, 2023
    Applicant: Xylem Europe GmbH
    Inventors: Peter Loman, Ulf Carlsson, Andrew Nicholas Dames
  • Publication number: 20210340931
    Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
    Type: Application
    Filed: May 24, 2021
    Publication date: November 4, 2021
    Inventors: David M. Carey, Syed Shah Jalal, Richard J. Dudek, Ulf Carlsson, Paul Peavler
  • Patent number: 11015548
    Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 25, 2021
    Assignee: Cummins Inc.
    Inventors: David M. Carey, Syed Shah Jalal, Richard J. Dudek, Ulf Carlsson, Paul Peavler
  • Publication number: 20210071612
    Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
    Type: Application
    Filed: December 14, 2017
    Publication date: March 11, 2021
    Inventors: David Michael Carey, Jalal Syed, Richard J. Dudek, Ulf Carlsson
  • Publication number: 20200408181
    Abstract: A system for protecting a high-pressure accumulator fuel injection system of an internal combustion engine against excessively high fuel pressures occurring in a high-pressure accumulator of the fuel injection system caused by a malfunction in the fuel injection, wherein the system comprises a member measuring the fuel pressure inside the high-pressure accumulator and sending information about this pressure to a control unit. An electrically controllable inlet valve to a pumping element of a high-pressure pump is included in the system and controlled by the control unit to be transferred to a continuously open or closed state, if the pressure measured exceeds a predetermined pressure level for stopping the feeding of fuel by the pumping element to the high-pressure accumulator.
    Type: Application
    Filed: February 2, 2017
    Publication date: December 31, 2020
    Inventors: Kim KYLSTRÖM, Ulf CARLSSON
  • Patent number: 10310360
    Abstract: Flash tubes for photographic use, in particular, a flash tube is adapted to provide a light output adapted to FP-sync, Flat Peak. The flash tube includes a length of glass tubing enclosing a gas for use in the flash tube, a cathode inside a first end part of glass tubing and an anode inside a second end part of glass tubing. The cathode includes an element that helps to ionize the gas that is wound around the cathode, such that a spark stream starts from the upper part of the cathode and is prevented from spreading down wards on the cathode and changing the arc length during the light output adapted to FP-sync.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: June 4, 2019
    Assignee: PROFOTO AB
    Inventors: Anton Falk, Ulf Carlsson, Carl Johan Grubbström
  • Patent number: 10085092
    Abstract: A flash generator is capable of identifying which type of flash head and flash head extension cables that is connected to the flash generator. A flash head and flash head extension cable can be identified by the flash generator. The flash generator provides a power supply to a flash head. Further the flash generator includes a first current generator for charging the capacitor. The flash generator further includes a second current generator or a voltage generator connected to an output of the flash generator and arranged to provide a current or a voltage to create a voltage UID over a component in a flash head or a flash head extension cable connected to the flash generator. Processing means are arranged to identify the flash head or the flash head extension cable by the measured voltage UID.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: September 25, 2018
    Assignee: PROFOTO AB
    Inventors: Anton Falk, Ulf Carlsson
  • Patent number: 10041430
    Abstract: The present disclosure provides a system for adjusting a fuel injector drive signal during a fuel injection event wherein the system comprises an engine having a fuel injector, a fuel control module configured to generate control signals corresponding to a desired fueling profile of a fuel injection event, and a fueling profile interface module that outputs drive profile signals to the fuel injector in response to the control signals to cause the fuel injector to deliver an actual fueling profile, wherein the fueling profile interface module changes the drive profile signals during the fuel injection event in response to a parameter signal indicating a characteristic of the actual fueling profile.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: August 7, 2018
    Assignee: CUMMINS INC.
    Inventors: Jalal Syed, Ulf Carlsson, Rodney J. Hemmerlein, Douglas W. Memering
  • Publication number: 20180109877
    Abstract: A flash generator is capable of identifying which type of flash head and flash head extension cables that is connected to the flash generator. A flash head and flash head extension cable can be identified by the flash generator. The flash generator provides a power supply to a flash head. Further the flash generator includes a first current generator for charging the capacitor. The flash generator further includes a second current generator or a voltage generator connected to an output of the flash generator and arranged to provide a current or a voltage to create a voltage UID over a component in a flash head or a flash head extension cable connected to the flash generator. Processing means are arranged to identify the flash head or the flash head extension cable by the measured voltage UID.
    Type: Application
    Filed: February 25, 2016
    Publication date: April 19, 2018
    Inventors: Anton FALK, Ulf CARLSSON
  • Publication number: 20180052384
    Abstract: Flash tubes for photographic use, in particular a flash tube is adapted to provide a light output adapted to FP-sync, Flat Peak. The flash tube includes a length of glass tubing enclosing a gas for use in the flash tube, a cathode inside a first end part of glass tubing and an anode inside a second end part of glass tubing. The cathode includes an element that helps to ionize the gas that is wound around the cathode, such that a spark stream starts from the upper part of the cathode and is prevented from spreading down wards on the cathode and changing the arc length during the light output adapted to FP-sync.
    Type: Application
    Filed: February 25, 2016
    Publication date: February 22, 2018
    Inventors: Anton FALK, Ulf CARLSSON, Carl Johan GRUBBSTRÖM
  • Patent number: 9624807
    Abstract: A method pertaining to a liquid supply system which supplies liquid to a feed device (230) via which liquid is supplied to at least one consumption point (250): Determining presence of air supplied upstream to the feed device (230), and, when presence of air is found, of reducing operating power of the feed device (230) compared with ordinary operation. Also a computer program product containing program code (P) for a computer (200; 210) for implementing the method. Also a device and a motor vehicle (100) which is equipped with the device.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: April 18, 2017
    Assignee: SCANIA CV AB
    Inventors: Lars Eriksson, Ulf Carlsson
  • Patent number: 9523299
    Abstract: A method for cooling a dosing unit (250) pertaining to an SCR system for exhaust cleaning, wherein after cessation of exhaust flow, cooling a reducing agent dosing unit (250) by a reducing agent supplied to it. Also running a feed device to supply the coolant reducing agent at reduced power, compared with ordinary operation. A computer program product containing program code (P) for a computer (200; 210) implements a method of the invention. Also an SCR system and a motor vehicle which is equipped with the SCR system are disclosed.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 20, 2016
    Assignee: SCANIA CV AB
    Inventors: Andreas Liljestrand, Per Bremberg, Ulf Carlsson, Lars Eriksson
  • Patent number: 9426870
    Abstract: A generator for a flash device includes at least a first capacitor bank, which includes at least one capacitor of a first type and at least a second capacitor bank, which includes at least one capacitor of a second type. The first capacitor bank is connectable to a charger via a first switch and the second capacitor bank is connectable to a charger via a second switch. The generator is configured to individually control the first switch and the second switch so that the first capacitor bank and the second capacitor bank can be individually charged to the same or different voltages. Since the first capacitor bank and the second capacitor bank can be simultaneously discharged, it is possible to achieve a desired energy level and color temperature from a flash device connected to the generator.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: August 23, 2016
    Assignee: PROFOTO AB
    Inventors: Anton Falk, Ulf Carlsson
  • Publication number: 20160222905
    Abstract: The present disclosure provides a system for adjusting a fuel injector drive signal during a fuel injection event wherein the system comprises an engine having a fuel injector, a fuel control module configured to generate control signals corresponding to a desired fueling profile of a fuel injection event, and a fueling profile interface module that outputs drive profile signals to the fuel injector in response to the control signals to cause the fuel injector to deliver an actual fueling profile, wherein the fueling profile interface module changes the drive profile signals during the fuel injection event in response to a parameter signal indicating a characteristic of the actual fueling profile.
    Type: Application
    Filed: September 16, 2014
    Publication date: August 4, 2016
    Applicant: CUMMINS INC.
    Inventors: Jalal Syed, Ulf Carlsson, Rodney J. Hemmerlein, Douglas W. Memering
  • Patent number: 9222385
    Abstract: A method pertaining to an SCR system for exhaust cleaning, includes deciding about a need, after cessation of an exhaust flow, to cool a reducing agent dosing unit (250) by a reducing agent supplied to it, and includes predicting a temperature pattern of the dosing unit (250) as a basis for deciding about the need and predicting whether a predetermined temperature of the dosing unit will be reached after cessation of exhaust flow. Also a computer program product containing program code (P) for implementing the method, an SCR system and a motor vehicle which is equipped with the SCR system are disclosed.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 29, 2015
    Assignee: SCANIA CV AB
    Inventors: Andreas Liljestrand, Per Bremberg, Ulf Carlsson, Lars Eriksson, Erik Gustafsson
  • Patent number: 9200557
    Abstract: A method pertaining to an SCR system in which reducing agent in liquid form is supplied to a feed device (230) and via which feed device reducing agent is supplied to at least one consumption point (250) from a container (205): the steps of continuously detecting the feed pressure (P) which the feed device (230) furnishes, and controlling the operation of the feed device (230) on the basis of changes (P?) in the feed pressure (P), with the object of reducing the impact of unwanted air supply at the feed device (230). Also pertaining to a computer program product containing program code (P) for a computer (200; 210) for implementing a method according to the invention. Also an SCR system and a motor vehicle which is equipped with the SCR system are disclosed.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 1, 2015
    Assignee: SCANIA CV AB
    Inventors: Lars Eriksson, Ulf Carlsson, Andreas Liljestrand, Per Bremberg
  • Publication number: 20150329113
    Abstract: A method and a system for adjusting set points for regulating the velocity of a vehicle: The velocity regulation uses at least one cruise control and one downhill speed control. A cruise control controls an engine system with a velocity set point vref based on a selected set velocity vset. The downhill speed control controls a brake system with a braking set point vdhsc—ref based on a downhill speed control velocity vdhsc, wherein the downhill speed control velocity vdhsc is related to the set velocity vset by an offset voffset. The velocity set point vref and the braking set point vdhsc—ref are adjusted by at least one shift vshift, which has a value corresponding to the offset voffset, vshift=voffset, wherein the adjustment is performed based on an actual behavior of the vehicle. As high an actual average velocity as possible is achieved hereby.
    Type: Application
    Filed: March 26, 2013
    Publication date: November 19, 2015
    Inventor: Ulf CARLSSON
  • Publication number: 20150245453
    Abstract: A generator for a flash device includes a first capacitor bank with at least one capacitor of a first type. The first capacitor bank is connectable to a charger via a first switch, and connected to an output via a first component which only allows current flow from the first capacitor bank to the output. A second capacitor bank includes at least one capacitor of a second type connectable to the charger via a second switch, and connected to the output via a second component which only allows current flow from the second capacitor bank to the output. The generator individually controls the first and second switches so that each of the first and second capacitor banks can be individually charged to the same or different voltages. A flash trigger switch is connected to a trigger output for providing a trigger voltage to a flash device connectable to the generator.
    Type: Application
    Filed: September 6, 2013
    Publication date: August 27, 2015
    Inventors: Anton Falk, Ulf Carlsson
  • Publication number: 20140217884
    Abstract: The present invention relates to the field of flash tubes for photographic use, in particular to a flash tube comprising a trigger element for triggering a flash in the flash tube. Accordingly, a flash tube is provided.
    Type: Application
    Filed: May 3, 2012
    Publication date: August 7, 2014
    Applicant: Profoto AB
    Inventors: Anton Falk, Ulf Carlsson
  • Publication number: 20130230305
    Abstract: A flash apparatus comprising at least two flash tubes and at least two energy storage units is presented, wherein each of said at least two energy storage units is being arranged to be configured to strictly correspond to one of the at least two flash tubes for a flash. The flash apparatus is configured to control the amount of energy provided by the at least two energy storage unit(s) to their corresponding flash tube and control the flash duration of the corresponding flash tube dependent of each other, respectively for each flash tube, so as to obtain substantially the same colour temperature from each flash tube for a flash. A method and a computer program product for use in the flash apparatus are also presented.
    Type: Application
    Filed: July 11, 2011
    Publication date: September 5, 2013
    Applicant: PROFOTO AB
    Inventors: Anton Falk, Ulf Carlsson, Bo Dalenius, Göran Marén