Patents by Inventor Robert S. McAlpine

Robert S. McAlpine 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: 10378393
    Abstract: An improved cam follower for a vehicle engine includes a body, a spring seat, a tower, a spring and an anti-rotation member. The body defines a body diameter, a first open end, and a second end. The spring seat includes a spring seat opening and an interlock portion. The spring seat may be affixed to the first open end of the body. The spring seat further includes a spring seat diameter wherein the spring seat diameter is greater than the body diameter. The tower may be disposed in a pin housing through the spring seat opening at the first open end of the body. The tower further includes an upper flange and a spring which abuts the upper flange at a first spring end. The second spring end abuts the spring seat. The anti-rotation member accordingly may be coupled to the body via the spring seat.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: August 13, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W Hayman, Jared M Satkowiak, Robert S McAlpine
  • Publication number: 20180347412
    Abstract: An improved cam follower for a vehicle engine includes a body, a spring seat, a tower, a spring and an anti-rotation member. The body defines a body diameter, a first open end, and a second end. The spring seat includes a spring seat opening and an interlock portion. The spring seat may be affixed to the first open end of the body. The spring seat further includes a spring seat diameter wherein the spring seat diameter is greater than the body diameter. The tower may be disposed in a pin housing through the spring seat opening at the first open end of the body. The tower further includes an upper flange and a spring which abuts the upper flange at a first spring end. The second spring end abuts the spring seat. The anti-rotation member accordingly may be coupled to the body via the spring seat.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 6, 2018
    Inventors: Alan W Hayman, Jared M Satkowiak, Robert S McAlpine
  • Patent number: 10077727
    Abstract: A fuel control module controls fuel injection of an engine based on a predetermined lean air/fuel ratio. The predetermined lean air/fuel ratio is fuel lean relative to a stoichiometric air/fuel ratio for the fuel. A cylinder control module selectively deactivates opening of intake and exhaust valves of M cylinders of the engine to increase removal of nitrogen oxide (NOx) from exhaust. M is an integer greater than 0 and less than a total number of cylinders of the engine. The fuel control module further: disables fueling of the M cylinders while opening of the intake and exhaust valves of the M cylinders is deactivated; and, while fueling of the M cylinders is disabled and opening of the intake and exhaust valves of the M cylinders is deactivated, controls fuel injection of other cylinders based on a predetermined rich air/fuel ratio that is fuel rich relative to the stoichiometric air/fuel ratio.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: September 18, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: David P. Sczomak, Robert J. Gallon, Robert S. McAlpine, Arun S. Solomon
  • Patent number: 10018128
    Abstract: An engine control system includes an internal combustion engine including a plurality of cylinders. An intake manifold is connected to the internal combustion engine. An exhaust manifold is connected to the internal combustion engine. A supercharger is connected to an air intake passage and the intake manifold and includes a variable speed drive. A throttle valve is disposed in the air intake passage. An exhaust passage is in connection with the exhaust manifold. A passive selective catalytic reduction catalyst system is in communication with the exhaust passage. An exhaust gas recirculation passage is in communication with the exhaust passage and the air intake passage and includes an exhaust gas recirculation valve. A controller controls the variable speed drive of the supercharger and the throttle valve and the exhaust gas recirculation valve based upon engine conditions.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: July 10, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ko-Jen Wu, Oliver Rudwinsky, Robert S. McAlpine
  • Publication number: 20180058390
    Abstract: A cylinder head casting for a three cylinder engine having a dedicated exhaust gas recirculation cylinder and two non-dedicated cylinders, includes three combustion chamber upper wall portions. First and second exhaust ports/runners extend from two of the three combustion chamber upper wall portions, respectively, for the non-dedicated cylinders and are paired together prior to a first common breakout at an exhaust flange in a side face of the cylinder head. A third exhaust port/runner extends from the other of the three combustion chamber upper wall portions corresponding to the dedicated EGR cylinder remains separated from the first and second exhaust port runners until a separate second breakout at the exhaust flange.
    Type: Application
    Filed: August 30, 2016
    Publication date: March 1, 2018
    Inventors: Alan W. HAYMAN, Robert S. McALPINE
  • Publication number: 20180038293
    Abstract: An engine control system includes an internal combustion engine including a plurality of cylinders. An intake manifold is connected to the internal combustion engine. An exhaust manifold is connected to the internal combustion engine. A supercharger is connected to an air intake passage and the intake manifold and includes a variable speed drive. A throttle valve is disposed in the air intake passage. An exhaust passage is in connection with the exhaust manifold. A passive selective catalytic reduction catalyst system is in communication with the exhaust passage. An exhaust gas recirculation passage is in communication with the exhaust passage and the air intake passage and includes an exhaust gas recirculation valve. A controller controls the variable speed drive of the supercharger and the throttle valve and the exhaust gas recirculation valve based upon engine conditions.
    Type: Application
    Filed: August 4, 2016
    Publication date: February 8, 2018
    Inventors: Ko-Jen WU, Oliver RUDWINSKY, Robert S. McALPINE
  • Patent number: 9797279
    Abstract: An exhaust valve includes a stem extending to a valve end. The valve end includes a pressure relief apparatus. An engine assembly includes a casing defining a cylinder bore, a combustion chamber and an exhaust passage. The combustion chamber is disposed between the exhaust passage and the cylinder bore. The engine assembly also includes a piston movable in the cylinder bore. The engine assembly further includes an exhaust valve movable between a first position blocking fluid communication through the exhaust passage and a second position allowing fluid communication through the exhaust passage. The exhaust valve includes a pressure relief apparatus configured to allow fluid communication through the exhaust valve from the cylinder bore to the exhaust passage when the exhaust valve is in the first position and a predetermined pressure threshold occurs in the cylinder bore between the exhaust valve and the piston.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: October 24, 2017
    Assignee: Gm Global Technology Operations LLC
    Inventors: Terry A. Tomas, Kenneth L. Briscoe, Robert S. McAlpine
  • Patent number: 9714694
    Abstract: A tensioner device, includes a housing defining a cylindrical bore. A plunger is disposed in the bore and has a non-cylindrical outer surface. A spring is engaged with the plunger for biasing the plunger in an outward direction and an oil passage is in communication with the cylindrical bore for delivering pressurized oil to the bore. The non-cylindrical outer surface provides hydraulic clearance areas between the plunger and the bore to provide improved damping without high damping force.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: July 25, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Eric D. Staley, David R. Staley, Robert S. McAlpine
  • Publication number: 20170198652
    Abstract: A fuel control module controls fuel injection of an engine based on a predetermined lean air/fuel ratio. The predetermined lean air/fuel ratio is fuel lean relative to a stoichiometric air/fuel ratio for the fuel. A cylinder control module selectively deactivates opening of intake and exhaust valves of M cylinders of the engine to increase removal of nitrogen oxide (NOx) from exhaust. M is an integer greater than 0 and less than a total number of cylinders of the engine. The fuel control module further: disables fueling of the M cylinders while opening of the intake and exhaust valves of the M cylinders is deactivated; and, while fueling of the M cylinders is disabled and opening of the intake and exhaust valves of the M cylinders is deactivated, controls fuel injection of other cylinders based on a predetermined rich air/fuel ratio that is fuel rich relative to the stoichiometric air/fuel ratio.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 13, 2017
    Inventors: David P. SCZOMAK, Robert J. GALLON, Robert S. MCALPINE, Arun S. SOLOMON
  • Patent number: 9670823
    Abstract: An internal combustion engine includes a cylinder block defining a cylinder, a cylinder head, and an exhaust manifold operatively connected to the cylinder head and configured to exhaust post-combustion gasses from the cylinder. The engine also includes a turbocharger having a turbine housing and configured to be driven by the post-combustion gasses from the exhaust manifold, to pressurize an airflow being received from the ambient, and to discharge the pressurized airflow to the cylinder. The engine additionally includes a cooling module arranged between the turbine housing and the cylinder head and defining a third coolant jacket configured to cool the turbine housing. A vehicle employing such an engine is also disclosed.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: June 6, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Robert S. McAlpine
  • Publication number: 20170059010
    Abstract: A tensioner device, includes a housing defining a cylindrical bore. A plunger is disposed in the bore and has a non-cylindrical outer surface. A spring is engaged with the plunger for biasing the plunger in an outward direction and an oil passage is in communication with the cylindrical bore for delivering pressurized oil to the bore. The non-cylindrical outer surface provides hydraulic clearance areas between the plunger and the bore to provide improved damping without high damping force.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 2, 2017
    Inventors: Eric D. STALEY, David R. STALEY, Robert S. McALPINE
  • Publication number: 20160281582
    Abstract: An internal combustion engine includes a cylinder block defining a cylinder, a cylinder head, and an exhaust manifold operatively connected to the cylinder head and configured to exhaust post-combustion gasses from the cylinder. The engine also includes a turbocharger having a turbine housing and configured to be driven by the post-combustion gasses from the exhaust manifold, to pressurize an airflow being received from the ambient, and to discharge the pressurized airflow to the cylinder. The engine additionally includes a cooling module arranged between the turbine housing and the cylinder head and defining a third coolant jacket configured to cool the turbine housing. A vehicle employing such an engine is also disclosed.
    Type: Application
    Filed: March 24, 2015
    Publication date: September 29, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Robert S. McAlpine
  • Publication number: 20160265396
    Abstract: An exhaust valve includes a stem extending to a valve end. The valve end includes a pressure relief apparatus. An engine assembly includes a casing defining a cylinder bore, a combustion chamber and an exhaust passage. The combustion chamber is disposed between the exhaust passage and the cylinder bore. The engine assembly also includes a piston movable in the cylinder bore. The engine assembly further includes an exhaust valve movable between a first position blocking fluid communication through the exhaust passage and a second position allowing fluid communication through the exhaust passage. The exhaust valve includes a pressure relief apparatus configured to allow fluid communication through the exhaust valve from the cylinder bore to the exhaust passage when the exhaust valve is in the first position and a predetermined pressure threshold occurs in the cylinder bore between the exhaust valve and the piston.
    Type: Application
    Filed: July 1, 2015
    Publication date: September 15, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Terry A. Tomas, Kenneth L. Briscoe, Robert S. McAlpine
  • Publication number: 20160258369
    Abstract: An internal combustion engine comprises a first engine bank and a second engine bank. A first intake valve is disposed in an intake port of a cylinder of the first engine bank, and is configured for metering the first flow of combustion air by periodically opening and closing according to a first intake valve lift and duration characteristic. A variable valve train control mechanism is configured for affecting the first intake valve lift and duration characteristic. Either a lift or duration of the first intake valve is modulated so as to satisfy an EGR control criterion.
    Type: Application
    Filed: May 17, 2016
    Publication date: September 8, 2016
    Inventors: Alan W. Hayman, Robert S. McAlpine, Edward J. Keating
  • Patent number: 9435298
    Abstract: An internal combustion engine comprises a first engine bank and a second engine bank. A first intake valve is disposed in an intake port of a cylinder of the first engine bank, and is configured for metering the first flow of combustion air by periodically opening and closing according to a first intake valve lift and duration characteristic. A variable valve train control mechanism is configured for affecting the first intake valve lift and duration characteristic. Either a lift or duration of the first intake valve is modulated so as to satisfy an EGR control criterion.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: September 6, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Robert S. McAlpine, Edward J. Keating
  • Patent number: 9422833
    Abstract: A camshaft assembly for an internal combustion engine includes a camshaft, a first lobe set, and a second lobe set, extending along, and rotatable about, a cam axis. The first lobe set includes a first, second, and third lobe. The second lobe set includes a first and second lobe. The first lobe set is movable along the cam axis between a first, second, and third position. The second lobe set is movable along the cam axis between a first and second position. The first and second position of each of the first and second lobe sets corresponds to lift of a respective valve stem in the engine. The third position of the first lobe set corresponds to zero lift of the respective valve stem to provide cylinder deactivation of a corresponding cylinder within the engine.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: August 23, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Robert S. McAlpine
  • Publication number: 20160146062
    Abstract: A camshaft assembly for an internal combustion engine includes a camshaft, a first lobe set, and a second lobe set, extending along, and rotatable about, a cam axis. The first lobe set includes a first, second, and third lobe. The second lobe set includes a first and second lobe. The first lobe set is movable along the cam axis between a first, second, and third position. The second lobe set is movable along the cam axis between a first and second position. The first and second position of each of the first and second lobe sets corresponds to lift of a respective valve stem in the engine. The third position of the first lobe set corresponds to zero lift of the respective valve stem to provide cylinder deactivation of a corresponding cylinder within the engine.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 26, 2016
    Inventors: Alan W. Hayman, Robert S. McAlpine
  • Patent number: 9341128
    Abstract: A cylinder control method includes: generating a torque request for an engine based on at least one driver input; based on the torque request, determining a target number of activated cylinders of the engine; determining possible sequences for activating and deactivating cylinders of the engine to achieve the target number of activated cylinders; determining predicted fuel consumption values for the possible sequences, respectively; identifying first ones of the possible sequences having predicted fuel consumption values that are less than a predetermined amount from a lowest one of the predicted fuel consumption values; selecting one of the first ones of the possible sequences; setting a selected sequence for activating and deactivating cylinders of the engine to the selected one of the first ones of the possible sequences; based on the selected sequence, one of activating and deactivating a next cylinder in a predetermined firing order of the cylinders.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: May 17, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Robert S. McAlpine
  • Patent number: 9322364
    Abstract: An intake manifold having an EGR-air flow distributor for distributing the desired air flow and EGR-air mixture through the intake manifold to each cylinder is disclosed. The EGR-air flow distributor includes a set of guide vanes defining plural flow channels in a plenum region of the inlet manifold. The EGR-air flow distributor also includes an EGR tube partially extending into the inlet manifold and having a slot formed therein for introducing EGR into the plenum region at a single location between the engine throttle and the guide vanes.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: April 26, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward J. Keating, Alan W. Hayman, Robert S. McAlpine
  • Patent number: 9316151
    Abstract: A crankshaft for a V8 engine includes first, second, third, fourth, fifth, sixth, seventh and eighth crank pins defined on the crankshaft. The second crank pin is rotationally offset from the first crank pin, the third crank pin is rotationally offset from the first and second crank pins, the fourth crank pin is rotationally offset from the first, second and third crank pins, the fifth crank pin is rotationally offset from the first, second, third and fourth crank pins, and the sixth pin is rotationally offset from the first, second, third, fourth and fifth crank pins. The seventh crank pin is rotationally aligned with the first crank pin and the eighth crank pin is rotationally aligned with the second crank pin.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: April 19, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward J. Keating, Robert S. McAlpine, Akram R. Zahdeh, Hatem Zakaria Orban