Patents by Inventor Pahngroc Oh
Pahngroc Oh 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).
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Patent number: 9091219Abstract: A control system includes a driver torque determination module, a lash zone torque determination module, a rate limit determination module, and an immediate torque determination module. The driver torque determination module determines a driver torque request when a driver depresses an accelerator pedal while a vehicle is coasting. The lash zone torque determination module determines a lash zone torque based on a transmission gear and an engine speed. The rate limit determination module determines an adjustment rate limit based on a previous immediate torque request, the lash zone torque, and the transmission gear. The immediate torque determination module determines a present immediate torque request based on the driver torque request and selectively determines the present immediate torque request based on the adjustment rate limit.Type: GrantFiled: March 1, 2011Date of Patent: July 28, 2015Assignee: GM Global Technology Operations LLCInventors: Krishnendu Kar, Pahngroc Oh, Andrew W. Baur
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Patent number: 8594904Abstract: A control system for an engine includes an engine torque request module, an engine torque response module, a torque command limit module, and an actuation module. The engine torque request module determines an engine torque request based on (i) an engine power request and (ii) a desired engine speed (DRPM). The engine torque response module determines first and second torque values based on (i) an engine torque response model and (ii) first and second torque boundaries, wherein the first and second torque boundaries are based on the DRPM and a measured engine speed (RPM). The torque command limit module generates a secured engine torque request based on (i) the engine torque request and (ii) the first and second torque values. The actuation module controls at least one actuator of the engine based on the secured engine torque request.Type: GrantFiled: September 23, 2011Date of Patent: November 26, 2013Inventors: Michael Livshiz, Jeffrey M. Kaiser, Richard B. Jess, Michael J. Pitsch, Michael L. Waterman, Pahngroc Oh
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Patent number: 8566002Abstract: A system includes a power request module, a first desired engine speed (DRPM) determination module, a driver torque request module, and an actuation module. The power request module generates a power request for an engine of the vehicle based on an accelerator pedal position and a vehicle speed. The first DRPM determination module determines a first target DRPM based on the power request, a turbine speed of a torque converter, and a k-factor of the torque converter. The driver torque request module selectively generates a torque request for the engine based on the power request and the first target DRPM. The actuation module controls at least one engine actuator based on the torque request.Type: GrantFiled: June 22, 2011Date of Patent: October 22, 2013Inventors: Michael Livshiz, Jeffrey M. Kaiser, Michael J. Pitsch, Michael L. Waterman, Pahngroc Oh
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Publication number: 20130080023Abstract: A control system for an engine includes an engine torque request module, an engine torque response module, a torque command limit module, and an actuation module. The engine torque request module determines an engine torque request based on (i) an engine power request and (ii) a desired engine speed (DRPM). The engine torque response module determines first and second torque values based on (i) an engine torque response model and (ii) first and second torque boundaries, wherein the first and second torque boundaries are based on the DRPM and a measured engine speed (RPM). The torque command limit module generates a secured engine torque request based on (i) the engine torque request and (ii) the first and second torque values. The actuation module controls at least one actuator of the engine based on the secured engine torque request.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Michael Livshiz, Jeffrey M. Kaiser, Richard B. Jess, Michael J. Pitsch, Michael L. Waterman, Pahngroc Oh
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Patent number: 8307808Abstract: An engine control system includes a disturbance module, a torque correction module, a torque-to-spark module, and a spark correction module. The disturbance module determines a disturbance value for a past combustion stroke of a cylinder of an engine based on rotation of a crankshaft. The torque correction module selectively determines a torque correction for a future combustion stroke of the cylinder based on the disturbance value. The torque-to-spark module determines a spark correction based on the torque correction and determines an uncorrected spark timing based on a torque request. The spark correction module determines a corrected spark timing based on the uncorrected spark timing and the spark correction and generates spark during the future combustion stroke based on the corrected spark timing.Type: GrantFiled: April 19, 2010Date of Patent: November 13, 2012Inventors: Jeffrey M. Kaiser, Timothy M. Karnjate, Christopher E. Whitney, Zhong Li, David S. Mathews, Eric B. Ferch, Pahngroc Oh
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Publication number: 20120265421Abstract: A system includes a power request module, a first desired engine speed (DRPM) determination module, a driver torque request module, and an actuation module. The power request module generates a power request for an engine of the vehicle based on an accelerator pedal position and a vehicle speed. The first DRPM determination module determines a first target DRPM based on the power request, a turbine speed of a torque converter, and a k-factor of the torque converter. The driver torque request module selectively generates a torque request for the engine based on the power request and the first target DRPM. The actuation module controls at least one engine actuator based on the torque request.Type: ApplicationFiled: June 22, 2011Publication date: October 18, 2012Applicant: GM Global Technology Operations LLCInventors: Michael Livshiz, Jeffrey M. Kaiser, Michael J. Pitsch, Michael L. Waterman, Pahngroc Oh
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Publication number: 20120150399Abstract: A control system includes a driver torque determination module, a lash zone torque determination module, a rate limit determination module, and an immediate torque determination module. The driver torque determination module determines a driver torque request when a driver depresses an accelerator pedal while a vehicle is coasting. The lash zone torque determination module determines a lash zone torque based on a transmission gear and an engine speed. The rate limit determination module determines an adjustment rate limit based on a previous immediate torque request, the lash zone torque, and the transmission gear. The immediate torque determination module determines a present immediate torque request based on the driver torque request and selectively determines the present immediate torque request based on the adjustment rate limit.Type: ApplicationFiled: March 1, 2011Publication date: June 14, 2012Applicant: GM Global Technology Operations LLCInventors: Krishnendu Kar, Pahngroc Oh, Andrew W. Baur
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Publication number: 20110253100Abstract: An engine control system includes a disturbance module, a torque correction module, a torque-to-spark module, and a spark correction module. The disturbance module determines a disturbance value for a past combustion stroke of a cylinder of an engine based on rotation of a crankshaft. The torque correction module selectively determines a torque correction for a future combustion stroke of the cylinder based on the disturbance value. The torque-to-spark module determines a spark correction based on the torque correction and determines an uncorrected spark timing based on a torque request. The spark correction module determines a corrected spark timing based on the uncorrected spark timing and the spark correction and generates spark during the future combustion stroke based on the corrected spark timing.Type: ApplicationFiled: April 19, 2010Publication date: October 20, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jeffrey M. Kaiser, Timothy M. Karnjate, Christopher E. Whitney, Zhong Li, David S. Mathews, Eric B. Ferch, Pahngroc Oh
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Patent number: 7912621Abstract: A system includes an out of correlation (OOC) detection module that detects an OOC error between a first throttle position sensor (TPS) and a second TPS. An out of range (OOR) detection module that detects first and second OOR errors for the first and second TPS, respectively. An OOC counter sets an OOC error when an OOC count is greater than or equal to a first OOC value. An OOR counter sets first and second OOR errors when first and second OOR counts, respectively, are greater than or equal to a second OOR value that is less than the first OOC value. A control module increments the counters when the respective errors occur and sets at least one of the first and second OOR counts equal to the OOC count when at least one of the first and second OOR errors occur after the OOC error.Type: GrantFiled: February 28, 2008Date of Patent: March 22, 2011Inventors: Paul A. Bauerle, Marco J. Gatti, Joseph M. Stempnik, Jonathan Packard, Anne M. Lemoigne, Pahngroc Oh, Daniel G. Bolstrum
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Publication number: 20090240418Abstract: A system includes an out of correlation (OOC) detection module that detects an OOC error between a first throttle position sensor (TPS) and a second TPS. An out of range (OOR) detection module that detects first and second OOR errors for the first and second TPS, respectively. An OOC counter sets an OOC error when an OOC count is greater than or equal to a first OOC value. An OOR counter sets first and second OOR errors when first and second OOR counts, respectively, are greater than or equal to a second OOR value that is less than the first OOC value. A control module increments the counters when the respective errors occur and sets at least one of the first and second OOR counts equal to the OOC count when at least one of the first and second OOR errors occur after the OOC error.Type: ApplicationFiled: February 28, 2008Publication date: September 24, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Paul A. Bauerle, Marco J. Gatti, Joseph M. Stempnik, Jonathan Packard, Anne M. Lemoigne, Pahngroc OH, Daniel G. Bolstrum
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Patent number: 7068178Abstract: A seating system and a shared sensor is described and shown. The seating system includes a seat section and a back section, adjustable bolsters coupled to the seat section and the back section, and a control unit coupled to the adjustable bolster. The shared sensor is coupled to the control unit of the seating system and to another system in the vehicle.Type: GrantFiled: November 27, 2001Date of Patent: June 27, 2006Assignee: Visteon Global Technologies, Inc.Inventor: Pahngroc Oh
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Patent number: 6720750Abstract: A method for tilting a seat of a vehicle based on a first threshold (low) and a first threshold (high) for a first parameter of the vehicle and a second threshold (low) and a second threshold (high) for a second parameter of the vehicle. The tilt angle of the seat is increased if the first parameter is greater that or equal to the first threshold (low) and the second parameter is greater than or equal to the second threshold (high) or if the parameter is greater than or equal to the first threshold (high) and the second parameter is greater than or equal to the second threshold (low).Type: GrantFiled: July 25, 2002Date of Patent: April 13, 2004Assignee: Visteon Global Technologies, Inc.Inventors: Stephen M. Stachowski, Kevin J. Pavlov, Pahngroc Oh
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Patent number: 6683430Abstract: A method for adjusting an input parameter of an adjustable bolster (12) on a seat (10) of a vehicle (22). The preferred method includes (a) establishing a relationship between the input parameter and a feedback force on the adjustable bolster (12) and (b) adjusting the input parameter based on the relationship.Type: GrantFiled: July 24, 2002Date of Patent: January 27, 2004Assignee: Visteon Global Technologies, Inc.Inventors: Kevin J. Pavlov, Pahngroc Oh, Stephen M. Stachowski
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Patent number: 6668225Abstract: A trailer control system incorporates sensors on both the trailer and a tow vehicle towing the trailer to measure operating parameters of both the trailer and the tow vehicle or prime mover. A computer mounted in the trailer or in the tow vehicle gathers input data from the sensors, including a variety of measurements of force, displacement, and temperature for the tow vehicle, the trailer, and their components. The computer may also be used to apply braking forces to the wheels of the trailer. Using the simulator, a variety of components on the trailer may be tested, their performance measured, and a better trailer may be designed. A trailer may also incorporate such a system for better control of the trailer and the combination vehicle of which it is a part.Type: GrantFiled: November 16, 2001Date of Patent: December 23, 2003Assignee: Visteon Global Technologies, Inc.Inventors: Pahngroc Oh, Scott Funke, Kevin J. Pavlov
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Patent number: 6637816Abstract: The seating system of the preferred embodiment of the invention has been specifically designed for a vehicle having a deceleration sensor adapted to sense a deceleration event of the vehicle. The seating system of this preferred embodiment includes a seat assembly, a tilting mechanism adapted to tilt the seat assembly, and a control unit coupled to the deceleration sensor and adapted to activate the tilting mechanism upon the sensing of a deceleration event.Type: GrantFiled: March 11, 2002Date of Patent: October 28, 2003Assignee: Visteon Global Technologies, Inc.Inventors: Kevin J. Pavlov, Pahngroc Oh, Stephen M. Stachowski
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Patent number: 6629715Abstract: A method for adjusting a bolster (22) on a seat (10) involves sensing upper and lower limits of several vehicle parameters to determine bolster condition.Type: GrantFiled: July 24, 2002Date of Patent: October 7, 2003Assignee: Visteon Global Technologies, Inc.Inventors: Pahngroc Oh, Scott A. Funke, Stephen M. Stachowski, Kevin J. Pavlov
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Publication number: 20030107231Abstract: A method for adjusting a bolster (22) on a seat (10) involves sensing upper and lower limits of several vehicle parameters to determine bolster condition.Type: ApplicationFiled: July 24, 2002Publication date: June 12, 2003Inventors: Pahngroc Oh, Scott A. Funke, Stephen M. Stachowski, Kevin J. Pavlov
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Publication number: 20030098662Abstract: A method for tilting a seat of a vehicle based on a first thresholdlow and a first thresholdhigh for a first parameter of the vehicle and a second thresholdlow and a second thresholdhigh for a second parameter of the vehicle. The tilt angle of the seat is increased if the first parameter≧first thresholdlow and the second parameter≧second thresholdhigh or if the first parameter≧first thresholdhigh and the second parameter≧second thresholdlow.Type: ApplicationFiled: July 25, 2002Publication date: May 29, 2003Inventors: Stephen M Stachowski, Kevin J Pavlov, Pahngroc Oh
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Publication number: 20020173892Abstract: A seating system and a shared sensor is described and shown. The seating system includes a seat section and a back section, adjustable bolsters coupled to the seat section and the back section, and a control unit coupled to the adjustable bolster. The shared sensor is coupled to the control unit of the seating system and to another system in the vehicle.Type: ApplicationFiled: November 27, 2001Publication date: November 21, 2002Inventor: Pahngroc Oh
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Publication number: 20020125750Abstract: The seating system of the preferred embodiment of the invention has been specifically designed for a vehicle having a deceleration sensor adapted to sense a deceleration event of the vehicle. The seating system of this preferred embodiment includes a seat assembly, a tilting mechanism adapted to tilt the seat assembly, and a control unit coupled to the deceleration sensor and adapted to activate the tilting mechanism upon the sensing of a deceleration event.Type: ApplicationFiled: March 11, 2002Publication date: September 12, 2002Inventors: Kevin J. Pavlov, Pahngroc Oh, Stephen M. Stachowski