Patents by Inventor Anders Andreasson

Anders Andreasson 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).

  • Flow reversal in exhaust system including filter
    Publication number: 20060254263
    Abstract: A process for treating an exhaust gas on a lean-burn reciprocating internal combustion engine includes the steps of collecting particulate matter (PM) on a first filter and combusting a carbon fraction thereof, periodically reversing the direction of gas flow through the first filter thereby displacing uncombusted PM from the upstream side of the first filter and collecting at least part of the displaced PM on a second filter.
    Type: Application
    Filed: June 18, 2004
    Publication date: November 16, 2006
    Inventors: Eive Tord Allansson, Anders Andreasson, Mats Lavenius
  • Treatment of nox sorber regeneration gas
    Publication number: 20060213189
    Abstract: A method of treating an exhaust gas of a lean-burn reciprocating engine includes sorbing NOx on at least one NOx sorber when the exhaust gas is lean, intermittently contacting the at least one NOx sorber with an agent effective to convert NOx to N2, thereby to regenerate the at least one NOx sorber and feeding effluent of said intermittent contacting step to the engine inlet.
    Type: Application
    Filed: June 18, 2004
    Publication date: September 28, 2006
    Inventors: Eive Tord Allansson, Anders Andreasson, Mats Lavenius
  • Catalytic reduction of NOx
    Publication number: 20040258594
    Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, a particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.
    Type: Application
    Filed: July 8, 2004
    Publication date: December 23, 2004
    Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren
  • System for NOx reduction in exhaust gases
    Patent number: 6805849
    Abstract: Selective catalytic reduction of NOx in combustion gases, especially from diesel engines, utilizes a system incorporating an oxidation catalyst to convert at least a portion of NO to NO2, a particulate filter downstream of the oxidation catalyst, a source of reductant such as NH3 or urea for injection downstream of the particulate filter, and an SCR catalyst located downstream of the point of injection of the reductant. Considerable improvements in NOx conversion are observed.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: October 19, 2004
    Assignees: Johnson Matthey Public Limited Company, HJS Fahrzeugtechnik GmbH & Co. KG
    Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren
  • Emissions control
    Patent number: 6427436
    Abstract: A heavy duty diesel engine having an exhaust system incorporating a catalyst to convert NO to NO2 and a particulate trap on which soot particles are continuously oxidized, and a portion of the exhaust gases are recirculated through a cooler and exhaust gas flow valve before being mixed with air and fed to the engine cylinders. The system also incorporates a sensor to detect the amount of NOx in the exhaust to adjust the gas flow valve, thereby adjusting the portion of recirculated exhaust gas fed to the engine cylinders.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: August 6, 2002
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Ronny Allansson, Klas Anders Andreasson, Nils Myers, Ari Uusimaki, James Patrick Warren
  • EMISSIONS CONTROL
    Publication number: 20020046562
    Abstract: A heavy duty diesel engine (1) has an exhaust system incorporating a catalyst (5a) to convert NO to NO 2 and a particulate trap (5b) on which soot particles are continuously oxidized, and a portion of the cleaned gases are recirculated through a cooler (7) and an exhaust gas flow valve (8) before being mixed with air and fed to the engine cylinders. Considerable reductions in NOx can be achieved.
    Type: Application
    Filed: April 28, 2000
    Publication date: April 25, 2002
    Inventors: RONNY ALLANSSON, KLAS ANDERS ANDREASSON, NILS MYERS, ARI UUSIMAKI, JAMES PATRICK WARREN