By Sorber Or Mechanical Separator Patents (Class 60/311)
  • Patent number: 9010095
    Abstract: An exhaust treatment unit includes an exhaust treatment device that treats exhaust gas from an engine of a work vehicle, a bracket including an attachment portion attachable to a hoisting hook, and a detachable component. The bracket supports the exhaust treatment device. The detachable component is attachable to and detachable from the attachment portion. When the unit is attached, the hoisting hook is attached to the attachment portion, the unit is hoisted using a hoisting tool including the hoisting hook, moved to an attachment position and installed in the work vehicle. The hoisting hook is then detached from the attachment portion and the detachable component is attached to the unit using the attachment portion. When the unit is detached, the detachable component is detached from the attachment portion, the hoisting hook is attached to the attachment portion, and the unit is hoisted and detached using the hoisting tool.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 21, 2015
    Assignee: Komatsu Ltd.
    Inventors: Manabu Himoto, Osamu Nishimura
  • Patent number: 9010098
    Abstract: The present disclosure is directed to an after-treatment device. The after-treatment device may have a center plenum configured to be fluidly connected to an engine. The after-treatment device may also have a filter bank having a plurality of filter assemblies. Each filter assembly may have an inlet fluidly connected to the center plenum. The inlet may be oriented orthogonal to the center plenum. Each filter assembly may also have an outlet. Further, the after-treatment device may have an exhaust plenum fluidly connected to the outlet. The exhaust plenum may be oriented orthogonal to the outlet. The exhaust plenum may also have an outer wall disposed parallel to and located at a predetermined distance from the outlet.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: April 21, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Pradeep Ganesan, Satyajit Gowda
  • Patent number: 9003773
    Abstract: A vehicle and method of updating aging of a selective catalytic reduction filter (SCRF) of an exhaust treatment system of the vehicle are disclosed. The method includes determining a desorption rate estimate of a catalyst of the SCRF and determining an ash volume estimate representative of an amount of ash collected inside the SCRF. The method also includes determining an ash correction factor from the ash volume estimate and calculating, via a controller, a corrected desorption rate value by multiplying the ash correction factor with the desorption rate estimate to update the aging of the SCRF.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: April 14, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Thomas Larose, Jr., Christopher Whitt, Christopher C. Swoish, Joshua Clifford Bedford
  • Patent number: 9003782
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: April 14, 2015
    Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar AB
    Inventors: Marcus Werni, Rainer Lehnen
  • Patent number: 8997469
    Abstract: An engine with an exhaust treatment device (2) wherein a rotation moment of a side support stay (12) is generated by a load of a side portion (50) received by side support stay fastening tool (13) via an edge portion (21) of a cutout groove (20). As a result, a load of the side portion (50) of the exhaust treatment device (2) can be supported by the side support stay (12). A one-side temporary mount portions (22) is provided in a one-side support stay (10). The one-side support stay (10) can be temporarily mounted on the one-side temporary mount portions (22).
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: April 7, 2015
    Assignee: KUBOTA Corporation
    Inventors: Mitsugu Okuda, Kozo Yoshida
  • Patent number: 8991161
    Abstract: A process which solves the problem of supplying NO2 in accordance with requirements by means of temperature control of the precatalyst which is decoupled from the operating state of the engine. In an associated apparatus, a precatalyst which contains at least one oxidation component and whose temperature can be controlled independently of the operating state of the engine and an active SCR stage comprising an SCR catalyst with upstream metering facility for a reducing agent from an external source are arranged in series. A particle filter can be arranged between precatalyst and metering facility. The precatalyst preferably additionally contains a nitrogen oxide storage material.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: March 31, 2015
    Assignee: Umicore AG & Co. KG
    Inventors: Lothar Mussmann, Ingo Lappas, Andreas Geisselmann, Wilfried Mueller
  • Patent number: 8991155
    Abstract: A vehicle and a method of determining a reductant storage capacity set point of a selective catalytic reduction filter (SCRF) of an exhaust treatment system of a vehicle are disclosed. The method includes determining a storage estimate of a reductant inside the SCRF and determining a particulate estimate in the SCRF representative of an amount of particulate matter collected inside the SCRF. The method also includes determining a particulate correction factor from the particulate estimate and calculating, via a controller, a set point value of the reductant in the SCRF by computing together the particulate correction factor and the storage estimate to determine the reductant storage capacity set point of the SCRF.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: March 31, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Thomas Larose, Jr., Christopher Whitt, Christopher C. Swoish, Joshua Clifford Bedford
  • Patent number: 8991162
    Abstract: An engine has an exhaust gas treatment apparatus attached thereto, wherein an exhaust pipe can be prevented from being damaged by a vibration of the engine body. An exhaust gas treatment apparatus is supported by an engine body and the engine body and the exhaust gas treatment apparatus communicate with each other through an exhaust pipe. The casing of the exhaust gas treatment apparatus consists of a plurality of casing units separable from each other. Connection flanges are disposed in respective end portions of the casing units. The casing units are coupled together by a connection of the connection flanges, and the exhaust gas treatment apparatus is supported by the engine body through the connection flanges.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: March 31, 2015
    Assignee: Kubota Corporation
    Inventors: Tetsuya Kosaka, Yusuke Suzuki, Yoshinobu Odawara, Nobuyuki Okabe
  • Patent number: 8991153
    Abstract: A method and system for treating emissions includes charging particles in an exhaust stream, producing one or more radicals, and oxidizing at least a portion of the charged particles with at least a portion of the produced radicals. At least a portion of the charged particles in the exhaust stream are then attracted on at least one attraction surface which is one of oppositely charged from the charged particles and grounded. The attracted particles are oxidized with another portion of the one or more produced radicals to self regenerate the at least one attraction surface. Downstream from where the attracted particles are oxidized, at least a portion of one or more first compounds in the exhaust stream are converted to one or more second compounds downstream from the attracting. Additionally, at least a portion of any remaining charged particles are oxidized into one or more gases.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: March 31, 2015
    Assignee: Rochester Institute of Technology
    Inventors: Ali Ogut, Chen Cheng
  • Publication number: 20150082777
    Abstract: This burner is disposed at the upstream side of a DPF and raises the temperature of exhaust by combusting an air-fuel mixture of air and fuel in a combustion region within a flame holder. The burner is provided with: an upstream-side cover enclosing the peripheral wall of the flame holder; and a partition wall that partitions the gap between the flame holder and the upstream-side cover into a prior-stage exhaust chamber and a latter-state exhaust chamber. An exhaust tube through which exhaust from an engine flows is connected to the upstream-side cover; a through hole that interconnects the prior-stage exhaust chamber and the latter-stage exhaust chamber is formed at the partition wall; exhaust flows in from the exhaust tube at the prior-stage exhaust chamber; and exhaust flows in from the prior-stage exhaust chamber through the through hole to the latter-stage exhaust chamber.
    Type: Application
    Filed: April 24, 2013
    Publication date: March 26, 2015
    Inventors: Ichiro Tsumagari, Ryo Shibuya, Atsushi Koide
  • Patent number: 8984866
    Abstract: An exhaust gas post treatment system for an internal combustion engine, including an intake device for taking hydrocarbons into an exhaust gas pipe carrying the exhaust process gas from the internal combustion engine and a treatment device through which exhaust process gas flows downstream of the intake location and which increases the exhaust process gas temperature by oxidation of the hydrocarbons taken in. An exhaust gas post treatment system and a method for operating the same, in that the treatment device has catalytically coated components, the hydrocarbons are at least partly evaporated in the intake device and are modified chemically by cracking reactions and/or by partial oxidation, and the proportion of platinum, at least in a subregion of the catalytic coating of the components, is less than 50% of the overall mass of all the catalytically active substances in this sub region of the coating.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: March 24, 2015
    Assignees: Umicore AG & Co. KG, Deutz AG
    Inventors: Rolf Miebach, Stephan Schraml, Peter Broll, Andreas Geisselmann, Stefan De Buhr, Stéphanie Frantz, Anke Woerz, Frank-Walter Schuetze
  • Patent number: 8984869
    Abstract: An exhaust gas emission control system for a diesel engine, having an oxidation catalyst (DOC) (7) and a diesel particulate filter (DPF) (9) in an exhaust passage, wherein a late post-injection control unit (62), which injects fuel into a combustion chamber at a timing not contributing to combustion in DPF regeneration control, feedback controls a late post-injection amount such that a regeneration amount of soot regenerated by the DPF (9) becomes a target soot regeneration amount per unit time.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: March 24, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Ko Takayanagi, Keisuke Okuda
  • Patent number: 8984860
    Abstract: In a diesel engine and exhaust aftertreatment system, a controller is arranged to control operation of the engine to obtain a first set of exhaust characteristics and to control a fuel injector to inject fuel upstream of a DPF at a first rate of injection until at least one condition is attained, and, after the at least one condition is attained, to control the fuel injector so that a rate of fuel injection is reduced and to contra! operation of the engine to obtain a second set of exhaust characteristics so that regeneration of the DPF occurs. At least one characteristic of the first and second sets of characteristics beina, different. A method for treating, diesei engine exhaust is also disclosed.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: March 24, 2015
    Assignee: Mack Trucks, Inc.
    Inventor: Chun Tai
  • Patent number: 8986636
    Abstract: Embodiments of the invention provide an engine aftertreatment apparatus comprising first and second diesel particulate filters (DPFs), the first DPF being provided upstream of the second DPF, the second DPF being provided with a coating of a second DPF catalyst, the second DPF catalyst being arranged to promote reduction of NOx.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: March 24, 2015
    Assignee: Jaguar Land Rover Limited
    Inventor: Jonathan Hartland
  • Patent number: 8978370
    Abstract: An exhaust gas treatment system for an internal combustion engine is provided. The internal combustion engine has an engine off condition. The exhaust gas treatment system includes particulate filter (“PF”) device in fluid communication with an exhaust gas conduit, an electric heater, a primary energy storage device, a single secondary energy storage device, and a control module. The PF device has a filter structure for removal of particulates in the exhaust gas, and is selectively regenerated based on an amount of particulates trapped within the filter structure of the PF device. The electric heater is disposed upstream of the filter structure and is selectively energized to provide heat for regeneration of the PF device. The single secondary energy storage device is selectively connected to the primary energy storage device. The single secondary energy storage device selectively energizes the electric heater.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: March 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Michael G. Reynolds
  • Patent number: 8978365
    Abstract: In the exhaust gas purification system, a diesel particulate defuser (“DPD”) for trapping particulate matter (“PM”) in exhaust gas is connected to an exhaust pipe of an engine to automatically regenerate the DPD by raising a temperature of the exhaust gas from the engine by carrying out post injection when an amount of PM in the DPD exceeds a predetermined amount. Further, the system includes detecting the temperature of the exhaust gas during DPD regeneration when the DPD is automatically regenerated, calculating a deviation between the detected temperature of the exhaust gas and a target temperature for the DPD regeneration, and controlling a quantity of the post injection by resetting an integral control term used in a PID control to zero when running mode automatic regeneration is shifted to idling mode automatic regeneration after a vehicle is stopped, when PID-controlling the quantity of the post injection based on the deviation.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: March 17, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Tetsuya Murata, Kenzou Yaginuma
  • Patent number: 8973351
    Abstract: A work machine includes a diesel engine; a gas emission cleaning device having a filter for trapping particulate matter included in gas emissions emitted from the diesel engine; and a filter regenerating device for performing automatic regeneration to automatically combust and eliminate particulate manner that has accumulated in the gas emission cleaning device, when the accumulated amount of the particulate matter has exceeded a predetermined value. The filter regenerating device has an automatic-regeneration-allowing device for allowing the automatic regeneration to be carried out by an external command; and, at startup, the automatic-regeneration-allowing device disallows carrying out automatic regeneration.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: March 10, 2015
    Assignee: Kubota Corporation
    Inventors: Akiya Shibutani, Kazuya Maeda, Akihiro Matsuzaki
  • Patent number: 8966881
    Abstract: It is possible to provide a device and a method for combusting particulate substances which particulate matters discharged from an internal combustion engine can be effectively combusted, and the device configuration is simple and does not become large and heavy.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: March 3, 2015
    Assignee: Utsunomiya University
    Inventor: Takeshi Nagasawa
  • Patent number: 8966882
    Abstract: A vehicle includes an engine, an exhaust system having a particulate filter which removes soot from the exhaust stream, a sensor, and a controller. The sensor measures instantaneous differential pressure across the filter. The controller executes a method to selectively enable or disable execution of an efficiency diagnostic of the filter as a function of a learned differential pressure offset value. The controller may also compare the differential pressure to a calibrated threshold and execute a control action when the differential pressure falls within an allowable range of the threshold. This may include applying the differential pressure offset value and enabling execution of the diagnostic using measurements from the zeroed sensor. Another control action may be executed when the measured differential pressure is not within the allowable range of the threshold, including disabling the execution of the diagnostic and setting a diagnostic code indicating that the sensor may be faulty.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 3, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Vincent J. Tylutki, Benjamin Radke, Janean E. Kowalkowski
  • Publication number: 20150052880
    Abstract: An inorganic fiber paper includes inorganic fibers, chopped glass fibers and a binder system containing both inorganic and organic binder components. The binder system contains a low content of the organic binder that imparts suitable handling properties and tensile strength to the inorganic fiber paper without causing the paper to emit a flame when used in demanding high temperature environments. The inorganic fiber paper can be used for a variety of automotive and industrial thermal insulation applications.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 26, 2015
    Inventor: Nicholas Vandervoort
  • Patent number: 8959893
    Abstract: A guidance output device, which outputs guidance for improving fuel economy when an energy wasting operation is detected in a construction machine that is provided with an exhaust gas purifying device for an internal combustion engine, includes a regeneration process determining unit that determines whether a regeneration process is in progress in the exhaust gas purifying device. It also includes a guidance output restriction unit that restricts an output of the guidance for energy saving by the guidance output unit when the regeneration process determining unit determines that the regeneration process is in progress in the exhaust gas purifying device.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: February 24, 2015
    Assignee: Komatsu Ltd.
    Inventors: Kentarou Tajima, Seiji Kamada, Koichi Yamashita
  • Patent number: 8959898
    Abstract: A method of regenerating a particulate filter of an exhaust system is provided. The method includes determining a first regeneration mode based on a soot level; generating control signals to a first fuel injector associated with an engine based on the first regeneration mode; determining a second regeneration mode based on the soot level; and generating control signal to a second fuel injector associated with an exhaust stream of the exhaust system based on the second regeneration mode.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: February 24, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul Jasinkiewicz, Rebecca J. Darr, James M. Perrin, Steve L. Melby
  • Patent number: 8959902
    Abstract: An exhaust aftertreatment system may include a first housing and a burner. The first housing may include first and second chambers. The first chamber may include an exhaust gas inlet receiving exhaust gas from an engine. The second chamber may receive exhaust gas from the first chamber and may include an exhaust gas outlet. The burner may include a second housing and a combustion chamber disposed within the second housing. The second housing may be at least partially disposed within the first chamber. The burner may supply heated gas to the second chamber. The heated gas within the burner may be fluidly isolated from exhaust gas in the first chamber. The second housing may be in a heat transfer relationship with exhaust gas in the first chamber.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: February 24, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Keith G. Olivier, Nicholas Morley
  • Publication number: 20150047330
    Abstract: A device and a system are provided. The system may include a perforated barrier disposed within an exhaust stream downstream from the combustion chamber(s). The barrier may divide the exhaust stream radially and longitudinally. A mixing surface may be coupled with the perforated barrier which may define a path within the exhaust stream to impart a swirl to the exhaust stream.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Applicant: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 8955314
    Abstract: The present disclosure describes systems and methods to increase the speed of engine warm up by heating oil with a thermoelectric device and also to generate electricity using the same thermoelectric device, exploiting a temperature gradient between engine oil and exhaust gases. The disclosure describes a vehicle engine, comprising: an engine oil reservoir; an exhaust gas system; and a thermoelectric device having a hot side and a cold side and connected to a battery, wherein, the thermoelectric device is configured such that the hot side is thermally coupled to the exhaust gas system and the cold side is thermally coupled to the engine oil reservoir. A diverter valve and duct are provided in the exhaust gas system to selectively convey exhaust gases to the thermoelectric device located in or adjacent to the engine oil reservoir.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: February 17, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Ian Graham Pegg, Robert Helle-Lorentzen
  • Patent number: 8955310
    Abstract: A compression-ignition engine is coupled to an exhaust aftertreatment system including a particulate filter. A method of operating the compression-ignition engine includes executing a feed-forward control scheme to determine an amount of post-combustion fuel to achieve a preferred temperature in the exhaust gas feedstream at an inlet to the particulate filter. The amount of post-combustion fuel is a nominal post-combustion fuel amount adjusted for a biodiesel blend ratio of the fuel. The post-combustion fuel is injected upstream of the exhaust aftertreatment system in response to a command to regenerate the particulate filter.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: February 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Yue-Yun Wang, Ibrahim Haskara, Claudio Ciaravino, Alberto Vassallo
  • Patent number: 8955307
    Abstract: In an ordinary mode, when an abnormality diagnosis of a PM sensor attached to a downstream opening downstream of a filter is performed, the PM sensor is moved to a first upstream opening upstream of the filter, and an exhaust gas is discharged from an engine. An ECU stores a program for the abnormality diagnosis. In an abnormality diagnosis mode, the ECU diagnoses the PM sensor by comparing an output value of the PM sensor to a standard output after performing the program. The first upstream opening may be closed by a cover in the ordinary mode.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: February 17, 2015
    Assignee: Denso Corporation
    Inventors: Shigeto Yahata, Tomohiro Ueno
  • Publication number: 20150040542
    Abstract: An exhaust gas purification device capable of enhancing handling operability such as maintenance of an engine includes two gas purification bodies which purity exhaust gas discharged from the engine, inner cases in which the gas purification bodies are incorporated, and outer cases in which the inner cases are incorporated. The outer cases are arranged side by side in a moving direction of exhaust gas and connected to each other. One of the adjoining inner cases is inserted into the other inner case to form a double-layer structure. A loosely-fitting gap is formed between an inner side surface of the one inner case and an outer side surface of the other inner case.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Inventors: Masataka MITSUDA, Hiroshi UEHARA
  • Publication number: 20150040541
    Abstract: A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Applicant: Cummins Intellectual Property, Inc.
    Inventor: Marten H. DANE
  • Publication number: 20150040539
    Abstract: An exhaust gas treatment system includes a particulate filter to collect particulate matter from exhaust gas flowing therethrough. A regeneration module performs a regeneration operation that regenerates the particular filter. The regeneration operation generates an exothermic event which heats the particulate filter above a target temperature that burns the particulate matter. At least one temperature sensor is disposed adjacent the particular filter to determine at least one temperature of the exhaust gas. The exhaust gas treatment system further includes a temperature diagnostic module to determine a temperature profile of the particulate filter based on the temperature of the exhaust gas. The temperature diagnostic module further determines a temperature deviation of the particulate filter based on a comparison between the temperature profile and a target temperature.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 12, 2015
    Applicant: GM Global Technology Operations LLC
    Inventors: Vincent J. Tylutki, Benjamin Radke, Janean E. Kowalkowski
  • Patent number: 8950177
    Abstract: A control system includes a heater control module and a particulate matter (PM) load module. The heater control module selectively activates an electric heater to initiate regeneration in a zone of a particulate filter and deactivates the electric heater after the regeneration is initiated. The regeneration continues along a length of the particulate filter after the electric heater is deactivated. The PM load module determines a PM load based on an outlet temperature of the particulate filter after the regeneration is initiated.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: February 10, 2015
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Stuart R. Smith, Garima Bhatia
  • Patent number: 8943807
    Abstract: The present invention relates to a method for achieving reduced emissions at cold start of an internal combustion engine having an exhaust gas after treatment system comprising at least one Diesel Oxygen Catalyst (DOC), at least one Diesel Particulate Filter (DPF) and a Selective Catalytic Reduction (SCR) unit, comprising the steps of: heating the DOC prior to cold starting said internal combustion engine, starting and controlling the internal combustion engine towards low NOx emission when said DOC has reached a predetermined temperature, optimizing the fuel consumption at a given total emission level when said DPF and SCR has reached a predetermined temperature.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: February 3, 2015
    Assignee: Volvo Lastvagnar AB
    Inventors: Lennart Andersson, Bert-Inge Bertilsson
  • Patent number: 8943813
    Abstract: An exhaust gas purifying device for an internal combustion engine includes an inflow case provided with an inlet pipe, a catalyst case in which an oxidizing catalyst for dosing is housed, a filter case in which a soot filter is housed, and an outflow case provided with an outlet pipe, and is attached to an attached target at two attachment points mutually spaced in the axial direction of the cases. At one of the two attachment points, which is defined on the catalyst case, the catalyst case is firmly fixed. At the other attachment point, which is defined on the filter case, the filter case is attached slidably in the axial direction.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: February 3, 2015
    Assignee: Komatsu Ltd.
    Inventors: Toshiyuki Kamei, Hiroshi Yamamoto
  • Patent number: 8943809
    Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiichiro Aoki, Hiroki Nishijima
  • Patent number: 8938950
    Abstract: A turbocharger mixing manifold for an exhaust aftertreatment system for a two-stroke locomotive diesel engine providing for a transition of a non-uniform exhaust gas flow field exiting a turbocharger into a regulated, uniform exhaust gas stream with minimal aerodynamic losses and an even distribution (mixing) of hydrocarbons in liquid, gas or burning states in order to ensure optimal performance of the attached exhaust aftertreatment system.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 27, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Gary R. Svihla, Deep Bandyopadhyay
  • Publication number: 20150020504
    Abstract: The present technology provides systems for monitoring particulate matter buildup on a filter installed in the engine exhaust stream of a vehicle. A filter differential pressure sensor monitors a pressure differential across the filter. A downstream differential pressure sensor monitors a pressure differential across an exhaust stream outlet. A processor monitors a particulate buildup value based at least in part on the pressure differential across the filter and the pressure differential across the exhaust stream outlet. A method for monitoring particulate buildup is also provided. The method monitors a pressure differential across the filter, and determines a downstream exhaust flow rate based on a pressure differential between a filter outlet housing and an exit pipe, where the diameter of the filter outlet housing is greater than the diameter of the exhaust exit pipe.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 22, 2015
    Inventors: Jacques Florian Nicole, Rade Milanovic, Evan Ngan, Little Flower Basani
  • Publication number: 20150020507
    Abstract: A method for particulate filter performance monitoring in an exhaust gas treatment system is provided. The method includes monitoring a current received from a soot sensor in the exhaust gas treatment system and comparing the current to a soot sensor current threshold. Based on determining that the current is greater than or equal to the soot sensor current threshold, an accumulated engine out soot value is compared to an accumulated engine out soot threshold. A particulate filter fault is set based on determining that the accumulated engine out soot value is less than the accumulated engine out soot threshold. A monitoring system and an exhaust gas treatment system of an engine are also provided.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 22, 2015
    Inventors: Min Sun, JR., Michelangelo Ardanese, Vincent J. Tylutki, Igor Anilovich
  • Publication number: 20150020508
    Abstract: A quantity of soot trapped in a particulate filter in an engine exhaust system is calculated for use in a regeneration control strategy by drawing electric current from an electric power supply through a circuit which comprises in series an internal portion of the particulate filter and an electric impedance external to the filter. At least one electric measurement device connected to the circuit provides circuit-related data sufficient to enable a processor to calculate temperature-adjusted electric resistance of soot trapped in the internal portion of the particulate filter by calculating non-temperature-adjusted electric resistance of soot trapped in the internal portion of the particulate filter and temperature-adjusting a calculation of non-temperature-adjusted electric resistance of soot trapped in the internal portion of the particulate filter based on temperature data from a source of temperature data indicative of an internal temperature of the particulate filter.
    Type: Application
    Filed: March 9, 2012
    Publication date: January 22, 2015
    Applicant: International Engine Intellectual Property Company, LLC
    Inventor: Thomas Edward Machamer
  • Patent number: 8935916
    Abstract: A method for the operation of a particulate filter system for an internal combustion engine wherein an. An exhaust gas stream enters a housing via a gas inlet opening. The housing receives a particulate filter, the stream flows into crude gas ducts connected to the gas inlet opening, and the stream can flow out of the particulate filter via clean gas ducts that are in fluid connection with a gas outlet opening, and are separated from the crude gas ducts. The crude gas ducts are connected to a connecting space in the direction of flow, and the connecting space has an exhaust port controlled by a closing mechanism. According to the invention, a method for operating an open particulate filter system is provided, by which the degree of separation of the soot particles from the exhaust gas can be increased.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: January 20, 2015
    Assignee: Deutz Aktiengesellschaft
    Inventors: Rolf Miebach, Stephan Schraml, Bernhard Hoffschmidt, Daniel Gonsior, Fabian Holzheid
  • Patent number: 8936760
    Abstract: An exhaust gas purification apparatus is provided with: a first soot-accumulation calculation unit 49 which calculates a first soot accumulation amount from an operation state of the engine; a second soot-accumulation calculation unit 51 which calculates a second soot accumulation amount from a total operation time of the engine, a total fuel consumption rate, a pressure difference between front and back of the particulate filter, and the like; a first soot-accumulation correction unit 55 which corrects the first soot accumulation amount calculated by the first soot-accumulation calculation unit 49 to a value greater than the first soot-accumulation amount when the active regeneration starts based on the second soot accumulation amount calculated by the second soot-accumulation calculation unit 51; and a regeneration ending unit 57 which ends the active regeneration when, in such a case that the active regeneration starts based on the corrected soot accumulation amount, the first soot accumulation amount beco
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: January 20, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Ko Takayanagi
  • Patent number: 8931263
    Abstract: An exhaust pipe for a diesel engine is connected to a diesel particulate defuser (“DPD”). To automatically regenerate the DPD, an exhaust gas temperature is detected, a deviation of the detected exhaust gas temperature from a target regeneration temperature is evaluated, and an amount of post injection is controlled through PID control according to the deviation. When, during the automatic regeneration with a vehicle running, an exhaust brake valve is closed, the post injection is interrupted. While the exhaust brake is being closed, an operation of an integral control term is continued with the PID control, and when the exhaust brake valve is opened, the integral control term operated without interruption is used as an initial amount of operation.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: January 13, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Takayuki Furukawa, Keizou Kanenobu
  • Patent number: 8931265
    Abstract: An exhaust aftertreatment system for a diesel engine includes a selective catalytic reduction (SCR) device and a diesel oxidation catalyst upstream of the SCR device. A method for warming-up the SCR device includes monitoring a plurality of combustion input parameters during an SCR warm-up strategy, monitoring a first temperature and a second temperature within the aftertreatment system, providing a feedback adjustment term as a function of a deviation in the first temperature from a desired temperature only when the monitored first and second temperatures are within a predetermined adjustment range, and initiating an adjusted SCR warm-up strategy based on the feedback adjustment term to converge the first temperature toward the desired temperature.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: January 13, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Ravishankar Ramamurthy
  • Patent number: 8931254
    Abstract: An exhaust pipe injection control device to optimally control a degree of exhaust gas recirculation (“EGR”) opening during diesel particulate filter (“DPF”) regeneration. The device includes a regeneration-time opening control unit which controls a degree of EGR opening of an EGR device during DPF regeneration, and a regeneration-time opening map in which an optimal degree of EGR opening of the EGR device during DPF regeneration is set in advance according to an engine rotation speed and a fuel injection amount of an engine. The regeneration-time opening control unit performs exhaust gas recirculation by referring to the regeneration-time opening map based on the engine rotation speed and the fuel injection amount of the engine and controlling the degree of EGR opening of the EGR device.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: January 13, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Naofumi Ochi, Shinji Hara, Kenzou Yaginuma
  • Patent number: 8925306
    Abstract: When a diesel particulate diffuser (“DPD”) of a vehicle traveling in a normal drive mode in the upland area is to be automatically regenerated by raising a temperature of exhaust gas from an engine, an exhaust gas purification system determines an upland full-load injection quantity from the atmospheric pressure in the upland area and an engine speed while the vehicle is in motion and drives the vehicle with the injection quantity determined. The system determines, during the regeneration mode, an upland drive regeneration injection quantity obtained by decreasing the upland full-load injection quantity on the basis of a quantity required for the post-injection. The injection quantity is gradually decreased from the upland full-load injection quantity to the upland regeneration drive injection quantity when the vehicle shifts from the normal drive mode in the upland area to the upland regeneration mode, so that the decreased quantity is used for the post-injection.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: January 6, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Takayuki Mukunashi, Tetsuya Asami
  • Patent number: 8919109
    Abstract: A hydraulic drive system executing load sensing control is capable of efficiently combusting and removing filter deposits inside an exhaust gas purification device by pump output power increasing control when there is no actuator operation, eliminating interference between the actuator operation and the pump output power increasing control. A first solenoid selector valve selects between tank pressure and delivery pressure of a pilot pump. A second solenoid selector valve is arranged in a line leading the output pressure of a differential pressure reducing valve to an LS control valve for selecting between enabling and disabling of the load sensing control. When the exhaust gas purification device needs regeneration, a controller executes switching to make the first solenoid selector valve output the delivery pressure of the pilot pump as dummy load pressure and to make the second solenoid selector valve disable the load sensing control.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: December 30, 2014
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Kiwamu Takahashi, Yasutaka Tsuruga, Hajime Yoshida, Yoshifumi Takebayashi, Kazushige Mori
  • Patent number: 8919104
    Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: December 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiichiro Aoki, Hiroki Nishijima
  • Patent number: 8919098
    Abstract: In a diesel engine equipped with a system for automatic regeneration of a particulate filter, an automatic regeneration mode is inhibited in the case where there is recorded a number higher than a pre-set threshold of unfavorable event. When the automatic regeneration mode is inhibited, an on-demand regeneration mode is simultaneously enabled, which can be activated manually by the driver. If an on-demand regeneration is not performed before the vehicle has covered a certain mileage since the automatic regeneration mode was inhibited, the vehicle is set in a condition of limited performance.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 30, 2014
    Assignees: Fiat Powertrain Technologies S.p.A., FPT Industrial S.p.A.
    Inventors: Enrico Barucchi, Giovanni Cerciello, Danilo Garombo, Paola Baratta, Bruno Aimar
  • Patent number: 8919107
    Abstract: A control device of a diesel engine with a turbocharger is provided. The device includes an engine body having a cylinder, a fuel injection valve, a turbine of the turbocharger, a bypass passage for bypassing the turbine, a bypass valve for opening and closing the bypass passage, an oxidation catalyst for purifying HC, and a DPF for capturing soot. The device includes a fuel cutting module for stopping, when the diesel engine is in a deceleration state, a main injection of the fuel performed on compression stroke, a DPF regenerating module for performing, when a predetermined DPF regeneration condition is satisfied, a post injection on expansion stroke to supply HC to the oxidation catalyst and regenerate the DPF by heat generated from an oxidation reaction of HC, and a bypass valve control module for controlling the bypass valve.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 30, 2014
    Assignee: Mazda Motor Corporation
    Inventor: Hiroyuki Nishimura
  • Patent number: 8919105
    Abstract: A DPF regeneration control device includes: a differential pressure sensor which detects a differential pressure between a front and a rear of a DPF; a DPF differential pressure setting unit which sets a DPF differential pressure generated in accordance with a total accumulated amount of soot and ash, sets a DPF differential pressure generated when an ash accumulation amount corresponds to an accumulation amount at which washing is required, as a washing request threshold, and sets a DPF differential pressure generated when the ash accumulation amount is larger than the washing request threshold such that a reduction in output is necessary, as an output reduction threshold; a washing request issuing unit which determines whether or not the DPF differential pressure has reached the washing request threshold; and an output reduction warning unit which determines whether or not the DPF differential pressure has reached the output reduction threshold.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Ko Takayanagi, Tomotsugu Masuda, Yasumichi Aoki
  • Publication number: 20140373513
    Abstract: A honeycomb body for exhaust gas aftertreatment includes a first end face, a second end face, a central axis that penetrates the two end faces and a length. The honeycomb body has at least one at least partially structured metallic layer which is disposed about the central axis. A structure of the at least one metallic layer has elevations and depressions which extend at least over part of the length of the honeycomb body and run obliquely to the central axis. At least one metallic connecting strip is provided between adjacent regions of the at least one metallic layer. The metallic connecting strip is shorter than the length of the honeycomb body and forms a brazed connection or welded connection to the adjacent regions. A method for producing such a honeycomb body and a motor vehicle having the honeycomb body are also provided.
    Type: Application
    Filed: September 9, 2014
    Publication date: December 25, 2014
    Inventors: PETER HIRTH, HOLGER STOCK, ROLF BRUECK