Patents Assigned to Cummins Intellectual Properties, Inc.
  • Patent number: 10328923
    Abstract: A system for establishing a torque limit for a vehicle is provided. The system uses impending terrain and speed conditions to determine an optimum torque, which improves engine efficiency and reduces fuel consumption.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: June 25, 2019
    Assignees: Cummins Intellectual Properties, Inc., PACCAR, Inc., Eaton Corporation
    Inventors: An Wu, Vivek A. Sujan, Phani Vajapeyazula, Kenneth Follen, Howard R. Frost
  • Patent number: 10273861
    Abstract: An exhaust aftertreatment system for treating exhaust flow from an internal combustion engine, and associated method, allows for independent control of exhaust flow through plural exhaust legs of the exhaust aftertreatment system. The independent control of exhaust flow is carried out by adjusting a valve positioned in each the exhaust legs based on a value of a signal generated by a flow measurement device positioned along at least one of the exhaust legs. The valves can be adjusted to force a target flow in a exhaust leg, relative flow among exhaust legs, exhaust temperature in an exhaust leg, exhaust backpressure and/or imbalance within the exhaust legs.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: April 30, 2019
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Colin L. Norris, Richard J. Ancimer, Axel O. zur Loye, Randy W. Nelson, Gary Charles Salemme, Ousmane Gueye, John Franklin Wright
  • Publication number: 20180258823
    Abstract: An exhaust aftertreatment system for treating exhaust flow from an internal combustion engine, and associated method, allows for independent control of exhaust flow through plural exhaust legs of the exhaust aftertreatment system. The independent control of exhaust flow is carried out by adjusting a valve positioned in each the exhaust legs based on a value of a signal generated by a flow measurement device positioned along at least one of the exhaust legs. The valves can be adjusted to force a target flow in a exhaust leg, relative flow among exhaust legs, exhaust temperature in an exhaust leg, exhaust backpressure and/or imbalance within the exhaust legs.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 13, 2018
    Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Colin L. Norris, Richard J. Ancimer, Axel O. zur Loye, Randy W. Nelson, Gary Charles Salemme, Ousmane Gueye, John Franklin Wright
  • Publication number: 20180100477
    Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 12, 2018
    Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Lester PETERS, Jeffrey HUANG, David BUCHANAN, Corydon Edward MORRIS, Gary GANT, Denis GIL, Heribert KAMMERSTETTER, Ernst WINKLHOFER
  • Patent number: 9903329
    Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: February 27, 2018
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Lester L. Peters, Jeffrey C. Huang, David L. Buchanan, Corydon Edward Morris, Gary Gant, Denis Gill, Heribert Kammerstetter, Ernst Winklhofer
  • Patent number: 9802597
    Abstract: A system for establishing a torque limit for a vehicle is provided. The system uses impending terrain and speed conditions to determine an optimum torque, which improves engine efficiency and reduces fuel consumption.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: October 31, 2017
    Assignee: CUMMINS INTELLECTUAL PROPERTIES, INC.
    Inventors: An Wu, Vivek A. Sujan, Phani Vajapeyazula, Kenneth Follen, Howard R. Frost
  • Patent number: 9745869
    Abstract: This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: August 29, 2017
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Timothy C. Ernst, Dave Morris
  • Patent number: 9719457
    Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: August 1, 2017
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Paul V. Moonjelly, Richard A. Booth, Lester L. Peters, Jeffrey C. Huang, Phanindra Garimella
  • Patent number: 9702289
    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: Grant
    Filed: October 28, 2014
    Date of Patent: July 11, 2017
    Assignee: Cummins Intellectual Property, Inc.
    Inventor: Marten H. Dane
  • Patent number: 9702272
    Abstract: A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve controls transfer of fluid between several of the components in the waste heat recovery system, especially from the receiver to the sub-cooler. The system may also have an associated control module.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: July 11, 2017
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Timothy C. Ernst, Christopher R. Nelson
  • Patent number: 9650925
    Abstract: A system and method of providing supplementary oil flow to an oil circuit of an internal combustion engine is described. The primary oil supply is from a mechanical oil pump. The supplementary oil supply is provided using a control system, one or more sensors, and an electrical oil pump. The system is beneficial in circumstances where the mechanical oil pump provides insufficient oil flow, including during engine shutdown.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: May 16, 2017
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Paul Douglas Free, Kavana Rao, Michael F. Mattern
  • Patent number: 9638067
    Abstract: A Rankine cycle waste heat recovery system associated with an internal combustion engine is in a configuration that enables handling of exhaust gas recirculation (EGR) gas by using the energy recovered from a Rankine cycle waste heat recovery system. The system includes a control module for regulating various function of the internal combustion engine and its associated systems along with the Rankine cycle waste heat recovery system.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: May 2, 2017
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Christopher R. Nelson, Timothy C. Ernst
  • Patent number: 9624857
    Abstract: This disclosure provides a method and system for determining recommendations for vehicle operation that reduce soot production in view of a diesel particulate filter (DPF) of an exhaust aftertreatment system. Recommendations generated can reduce excessive particulate matter (PM) production during transient engine events and provide for operating conditions favorable for passive regeneration. In this way, less frequent active regeneration of the DPF is needed and/or more opportunities are provided for passive regeneration. The system and method can utilize location and terrain information to anticipate and project a window of operation in view of reducing soot production and soot loading of the DPF, or provide the operator with instruction when such opportunities are present or will soon be encountered.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: April 18, 2017
    Assignees: CUMMINS INTELLECTUAL PROPERTY, INC., PACCAR, INC., EATON CORPORATION
    Inventors: Vivek A. Sujan, Timothy R. Frazier
  • Patent number: 9562467
    Abstract: A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: February 7, 2017
    Assignee: Cummins Intellectual Property, Inc.
    Inventor: Atsuhiko Watanabe
  • Patent number: 9470115
    Abstract: A cooling system provides improved heat recovery by providing a split core radiator for both engine cooling and condenser cooling for a Rankine cycle (RC). The cooling system includes a radiator having a first cooling core portion and a second cooling core portion. An engine cooling loop is fluidly connected the second cooling core portion. A condenser of an RC has a cooling loop fluidly connected to the first cooling core portion. A valve is provided between the engine cooling loop and the condenser cooling loop adjustably control the flow of coolant in the condenser cooling loop into the engine cooling loop. The cooling system includes a controller communicatively coupled to the valve and adapted to determine a load requirement for the internal combustion engine and adjust the valve in accordance with the engine load requirement.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: October 18, 2016
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Timothy C. Ernst, Christopher R. Nelson
  • Patent number: 9470177
    Abstract: Rib configurations for increasing the structural efficiency of a cylinder head, which relates to a peak combustion pressure capability of the cylinder head. In addition to increasing peak combustion pressure, the rib configurations may also improve sealing of the cylinder head and may improve the durability of an associated cylinder head gasket.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: October 18, 2016
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Jeffrey D. Jones, Vipin Prabhakaran, David M. Barnes
  • Patent number: 9464591
    Abstract: A cylinder liner sealing arrangement for an internal combustion engine including a cylinder block having cylinder bores, a cylinder head, a cylinder liner within each cylinder bore and a circumferential cut-out formed in the upper and outer surfaces of the cylinder liner. A circular sealing ring is positioned in the circumferential cut-out with the sealing ring contacting at least the cylinder block and the cylinder liner to form a coolant seal therebetween. The sealing ring includes a seal enhancing configuration formed on at least an outer circumferential surface of the sealing ring with the seal enhancing configuration including at least one of an arcuate portion of a ā€œDā€ ring seal or a plurality of circumferentially extending ribs.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: October 11, 2016
    Assignee: Cummins Intellectual Properties, Inc.
    Inventors: Joseph Worthington, Terry M. Shaw, David Genter, Dan E. Richardson, Ian McGiffen, Mark G. Luehrmann, Keith Gunter
  • Patent number: 9441528
    Abstract: This disclosure relates to an improved prechamber device for an internal combustion engine. The prechamber device is positioned adjacent to a combustion chamber. The improved prechamber device is configured to improve removal of heat from the prechamber device, particularly in the area adjacent to the combustion chamber.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: September 13, 2016
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventor: Patrick M. Pierz
  • Patent number: 9440635
    Abstract: A velocity profile can be used in conjunction with vehicle operating condition data to determine a gear shift schedule that mitigates the amount of service brake effort required to slow a vehicle by making optimal use of engine speed, friction and engine brakes. The gear shift point drives the engine to a higher operating speed and greater frictional torque, slowing the vehicle, which can then coast to a desired speed. The gear shift point can be timed to minimize fuel consumption during the maneuver. Thus, a vehicle downshift event is created based on the transmission gear recommendation. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: September 13, 2016
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Vivek A. Sujan, Phani Vajapeyazula, Kenneth Follen, An Wu, Barty L. Moffett, Howard R. Frost
  • Patent number: RE46806
    Abstract: A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of combustion chamber features. More particularly, configuration parameters for a piston crown and a piston bowl located within the piston crown are provided. The piston bowl configuration results in a combustion process that yields decreased heat transfer to a cylinder head of the internal combustion engine as well as reduced NOx emissions.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 24, 2018
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Rishikesh Venugopal, Donald W. Stanton, Bhargav Ranganath, Thomas Bodin