Patents by Inventor Lester L. Peters

Lester L. Peters 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).

  • Patent number: 6691677
    Abstract: A fuel delivery device for a fuel delivery system incorporates an electronic compensation device that either incorporates information that is relevant to the specific fuel delivery device or includes a processor that generates an actuator control signal that is based at least in part upon the information contained in the memory device.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: February 17, 2004
    Assignee: Cummins Inc.
    Inventors: Wayne A. Eckerle, Ron H. Temple, Lester L. Peters
  • Patent number: 6684849
    Abstract: A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: February 3, 2004
    Assignee: Cummins Inc.
    Inventors: Axel O. zur Loye, Larry J. Brackney, Cariappa M. Chenanda, Robert M. Hurst, Lester L. Peters, Patrick M. Pierz, John F. Wright
  • Publication number: 20040000600
    Abstract: An improved fuel injector is provided which effectively controls fuel injection events using two injection control valves which operate in series to control the movement of a nozzle valve element. An outer injection control valve and actuator assembly operates to control fluid pressure in a control volume adjacent an inner injection control valve thereby controlling the movement of the inner control valve which, in turn, controls fuel pressure in an inner control volume adjacent one end of the nozzle valve element. A particular design of the inner injection control valve prevents control valve oscillations thereby minimizing unwanted fuel injection variations.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: CUMMINS INC.
    Inventors: Lester L. Peters, C. Edward Morris, David M. Rix, Shankar C. Venkataraman
  • Patent number: 6659071
    Abstract: An internal combustion engine operable in a premixed charge compression ignition mode and a method for operating the engine, the engine including an engine body with a piston assembly, a combustion chamber formed in the engine body by the piston assembly, an intake system for delivering intake air to the combustion chamber during an intake stroke, a mixing device that mixes a first fuel with the intake air to provide a premixed charge of air and the first fuel, a direct fuel injector adapted to directly inject a second fuel into the combustion chamber, and a control system adapted to control the direct fuel injector in a manner to provide at least one early control injection, and preferably, a plurality of early control injections of the second fuel into the combustion chamber before start of combustion of the premixed charge.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: December 9, 2003
    Assignee: Cummins Inc.
    Inventors: Leon A. LaPointe, Cariappa M. Chenanda, Tim R. Frazier, Robert M. Hurst, Lester L. Peters, Patrick M. Pierz, Axel O. zur Loye
  • Publication number: 20030168037
    Abstract: A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.
    Type: Application
    Filed: March 14, 2003
    Publication date: September 11, 2003
    Applicant: Cummins Inc.
    Inventors: Axel O. zur Loye, Larry J. Brackney, Cariappa M. Chenanda, Robert M. Hurst, Lester L. Peters, Patrick M. Pierz, John F. Wright
  • Publication number: 20030155432
    Abstract: A fuel injector having a nozzle with improved cooling including a retainer and a nozzle housing received therein. The nozzle housing includes a nozzle shank, an outer peripheral surface and at least one injection hole at a tip of the nozzle shank. The nozzle shank is positioned in a nozzle support portion of the retainer. In one embodiment, the outer peripheral surface of the nozzle shank is tapered, and the inner peripheral surface of the nozzle support portion is correspondingly tapered and sized to engage the outer peripheral surface of the nozzle shank along a tapered interface. In another embodiment, the inner peripheral surface of the nozzle support portion has a diameter smaller than a diameter of the outer peripheral surface of the nozzle shank so that an interference fit exists at a seal interface.
    Type: Application
    Filed: February 7, 2001
    Publication date: August 21, 2003
    Inventors: David L. Buchanan, Lester L. Peters, C. Edward Morris
  • Publication number: 20030154956
    Abstract: A fuel delivery device for a fuel delivery system incorporates an electronic compensation device that either incorporates information that is relevant to the specific fuel delivery device or includes a processor that generates an actuator control signal that is based at least in part upon the information contained in the memory device.
    Type: Application
    Filed: February 15, 2002
    Publication date: August 21, 2003
    Applicant: Cummis Inc.
    Inventors: Wayne A. Eckerle, Ron H. Temple, Lester L. Peters
  • Patent number: 6588262
    Abstract: A novel and improved motion sensor for high pressure fluid delivery devices is provided which effectively senses movement of a component in a high pressure environment while minimizing the likelihood of fluid leakage through a receiving cavity containing at least a portion of the sensor. The motion sensor includes a sealing surface shaped and positioned relative to a force resisting surface formed on an annular cavity surface of the receiving cavity so as to apply a fluid, e.g. fuel, pressure induced sealing force against the force resisting surface due to the high pressure fluid forces acting on the sensor body. The sealing surface may be conically shaped for contacting a complementary conically shaped force resisting surface and/or the sealing surface may extend perpendicular to the direction of the fluid forces acting on the sensor body for abutment against a complementary positioned annular land containing the force resisting surface.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: July 8, 2003
    Assignee: Cummins Inc.
    Inventors: Joseph D. Kirzhner, Lester L. Peters, Todd M. Wieland, Wayne A. Eckerle
  • Patent number: 6561157
    Abstract: A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: May 13, 2003
    Assignee: Cummins Inc.
    Inventors: Axel O zur Loye, Larry J Brackney, Cariappa M Chenanda, Robert M Hurst, Lester L Peters, Patrick M Pierz, John F Wright
  • Patent number: 6557779
    Abstract: An improved closed nozzle injector assembly for injecting high pressure fuel into the combustion chamber of an engine is provided which includes a first needle valve element associated with a first set of injector orifices, a first needle valve control device for controlling the opening and closing of the first needle valve, a second needle valve associated with a second set of injector orifices and a second needle valve control device for controlling the opening and closing of the second needle valve. Each needle valve control device includes a control volume positioned at one end of the respective needle valve, a control volume charge circuit for supplying high pressure fuel to the respective control volume and the respective injection control valve for controlling the flow of high pressure fuel from the respective control volume to a low pressure drain thereby controlling the movement of the respective needle valve.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: May 6, 2003
    Assignee: Cummins Engine Company, Inc.
    Inventors: Julius P. Perr, J. Victor Perr, Lester L. Peters, Donald J. Benson, John T. Carroll, III
  • Publication number: 20020125339
    Abstract: An improved closed nozzle injector assembly for injecting high pressure fuel into the combustion chamber of an engine is provided which includes a first needle valve element associated with a first set of injector orifices, a first needle valve control device for controlling the opening and closing of the first needle valve, a second needle valve associated with a second set of injector orifices and a second needle valve control device for controlling the opening and closing of the second needle valve. Each needle valve control device includes a control volume positioned at one end of the respective needle valve, a control volume charge circuit for supplying high pressure fuel to the respective control volume and the respective injection control valve for controlling the flow of high pressure fuel from the respective control volume to a low pressure drain thereby controlling the movement of the respective needle valve.
    Type: Application
    Filed: March 2, 2001
    Publication date: September 12, 2002
    Inventors: Julius P. Perr, J. Victor Perr, Lester L. Peters, Donald J. Benson, John T. Carroll
  • Patent number: 6439202
    Abstract: An improved fuel injection system is provided which incorporates a common rail and a plurality of unit injectors which function together to efficiently produce various injection rate shapes and different combinations of discreet and blended pilot, main, post and after treatment fuel injection events during a single injection. The fuel injection system effectively permits flexible, responsively timed, square shaped, discreet low to mid pressure level injections utilizing the fuel pressure of the common rail while also allowing the unit injector portion to function independently to produce flexible and responsively timed and pressure controlled, triangular shaped high pressure fuel injection events and to recover excess energy. In one embodiment, a separate common rail pump is avoided by utilizing the unit injector plunger to replace fuel into the common rail which was previously injected.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: August 27, 2002
    Assignee: Cummins Inc.
    Inventors: John T. Carroll, III, Donald J Benson, Lester L Peters
  • Publication number: 20020108433
    Abstract: A novel and improved motion sensor for high pressure fluid delivery devices is provided which effectively senses movement of a component in a high pressure environment while minimizing the likelihood of fluid leakage through a receiving cavity containing at least a portion of the sensor. The motion sensor includes a sealing surface shaped and positioned relative to a force resisting surface formed on an annular cavity surface of the receiving cavity so as to apply a fluid, e.g. fuel, pressure induced sealing force against the force resisting surface due to the high pressure fluid forces acting on the sensor body. The sealing surface may be conically shaped for contacting a complementary conically shaped force resisting surface and/or the sealing surface may extend perpendicular to the direction of the fluid forces acting on the sensor body for abutment against a complementary positioned annular land containing the force resisting surface.
    Type: Application
    Filed: February 14, 2001
    Publication date: August 15, 2002
    Inventors: Joseph D. Kirzhner, Lester L. Peters, Todd M. Wieland, Wayne A. Eckerle
  • Publication number: 20020040692
    Abstract: An internal combustion engine operable in a premixed charge compression ignition mode and a method for operating the engine, the engine including an engine body with a piston assembly, a combustion chamber formed in the engine body by the piston assembly, an intake system for delivering intake air to the combustion chamber during an intake stroke, a mixing device that mixes a first fuel with the intake air to provide a premixed charge of air and the first fuel, a direct fuel injector adapted to directly inject a second fuel into the combustion chamber, and a control system adapted to control the direct fuel injector in a manner to provide at least one early control injection, and preferably, a plurality of early control injections of the second fuel into the combustion chamber before start of combustion of the premixed charge.
    Type: Application
    Filed: May 8, 2001
    Publication date: April 11, 2002
    Inventors: Leon A. LaPointe, Cariappa M. Chenanda, Tim R. Frazier, Robert M. Hurst, Lester L. Peters, Patrick M. Pierz, Axel O. zur Loye
  • Publication number: 20020007816
    Abstract: A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.
    Type: Application
    Filed: May 8, 2001
    Publication date: January 24, 2002
    Inventors: Axel O. Zur Loye, Larry J. Brackney, Cariappa M. Chenanda, Robert M. Hurst, Lester L. Peters, Patrick M. Pierz, John F. Wright
  • Patent number: 6336598
    Abstract: A hydraulically actuated dual fuel injector separately injects two fuels into a combustion chamber of an internal combustion engine. In particular, the two fuels may be controlled quantities of a first liquid fuel and a second gaseous fuel that are used to fuel a diesel engine. The injector preferably begins injecting the first fuel sequentially before beginning to inject the second fuel.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: January 8, 2002
    Assignee: Westport Research Inc.
    Inventors: Alain M. J. Touchette, Bradley D. Douville, S. Michael Baker, Lester L. Peters, Julius Perr, A. S. Ghuman, Donald J. Benson
  • Patent number: 6295971
    Abstract: A lube oil and fuel blending system, pumping device and method are provided which effectively, inexpensively and controllably removes used lube oil from an engine and delivers the lube oil to the fuel system for consumption within the engine. The lube oil and fuel blending system includes a fuel pumping device or injector containing a bore and a plunger reciprocally mounted in the bore for movement through a retraction stroke and an advancement stroke, each having a predetermined stroke length. A fuel drain circuit communicates with the bore at a drain location spaced a predetermined seal length axially along the bore from an outer opening of the bore through which the plunger extends. The predetermined seal length is specifically designed less than the predetermined stroke length to cause lube oil on the outer portion of the plunger to be delivered by the plunger to the fuel drain circuit at the drain location.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: October 2, 2001
    Assignee: Cummins Engine Company, Inc.
    Inventors: Lester L. Peters, Thomas M. Yonushonis, Raymond J. Amlung
  • Patent number: 6276334
    Abstract: A premixed charge compression ignition engine, and a control system, is provided which effectively initiates combustion by compression ignition and maintains stable combustion while achieving extremely low oxides of nitrogen emissions, good overall efficiency and acceptable combustion noise and cylinder pressures. The present engine and control system effectively controls the combustion history, that is, the time at which combustion occurs, the rate of combustion, the duration of combustion and/or the completeness of combustion, by controlling the operation of certain control variables providing temperature control, pressure control, control of the mixture's autoignition properties and equivalence ratio control. The combustion control system provides active feedback control of the combustion event and includes a sensor, e.g. pressure sensor, for detecting an engine operating condition indicative of the combustion history, e.g.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: August 21, 2001
    Assignee: Cummins Engine Company, Inc.
    Inventors: Patrick F. Flynn, Gary L. Hunter, Axel O. zur Loye, Omowoleola C. Akinyemi, Russ P. Durrett, Greg A. Moore, George G. Muntean, Lester L. Peters, Patrick M. Pierz, Julie A. Wagner, John F. Wright, Jackie M. Yeager
  • Patent number: 6116273
    Abstract: Check valves (500) are incorporated into a fuel injector so as to form a controlling orifice in the system between the solenoid vales which direct fuel to the respective injection and timing chambers of the fuel injector and the chambers themselves. The precision fuel metering capability of the valve (500) is determined by an annular clearance created between the plunger (512) of the valve and the valve body (510) when the valve is in its maximum stroke. For achieving a bi-stable operation of the valve, the ratio of the plunger valve seat (510d) area to the maximum plunger valve (512b) area and the spring (514) are key parameters. The check valves (500) are formed as cartridge type check valves that can be calibrated outside of the injector prior to the installation thereof.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: September 12, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventors: Yul J. Tarr, Lester L. Peters, Bai Mao Yen, Laszlo D. Tikk, Ivar L. Johnson, Daniel G. Burns, Mustahsen Gull, Harry L. Wilson, George L. Muntean
  • Patent number: 6098595
    Abstract: A multi-cylinder internal combustion engine is provided with an intake port injection system capable of effectively delivering port injected quantities of fuel to each cylinder while minimizing the number and size of the fuel injectors. The intake port injection system of the present invention includes a siamese or shared port arrangement having a plurality of common intake inlets, each delivering air from an intake manifold to one intake port of one cylinder and an intake port of a different cylinder. Two single intake inlets are also provided for delivering intake air solely to a single respective cylinder. Importantly, in a multi-cylinder engine having a total number of cylinders equal to N, the number of intake inlets, both common and single, equals N+1. Importantly, the total number of injectors also equals N+1. Although each intake inlet is served by only one injector, two injectors operate simultaneously to deliver fuel to a single cylinder via respective intake inlets.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: August 8, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventors: Lester L. Peters, A. S. Ghuman, Philip M. Dimpelfeld, Randy P. Hessel