Patents by Inventor Mark S. Yamazaki
Mark S. Yamazaki 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: 9592832Abstract: A method for controlling regenerative braking in a hybrid electric powertrain includes using an e-pump to supply fluid to a transmission provided an indication that a torque converter clutch disengagement will occur under current powertrain operating conditions is present, and discontinuing use of the e-pump and using a mechanical pump to supply fluid to the transmission provided the indication that a torque converter clutch disengagement will occur under current powertrain operating conditions is absent.Type: GrantFiled: March 18, 2014Date of Patent: March 14, 2017Assignee: FORD GLOBAL TECHNOLOGIE,S LLCInventors: Felix Nedorezov, Hong Jiang, Zhengyu Dai, Mark S. Yamazaki, Daniel S. Colvin
-
Patent number: 9415760Abstract: Calibration of an engine disconnect clutch for a hybrid electric powertrain. The clutch is prestroked while an engine and machine are stopped. A machine torque is increased until the machine starts rotating. A pressure of the clutch is adjusted as a function of a torque produced by the machine when the machine started rotating.Type: GrantFiled: April 2, 2014Date of Patent: August 16, 2016Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Wei Liang, Daniel S. Colvin, Rajit Johri, Ryan A. McGee, Xiaoyong Wang, Bernard D. Nefcy, Mark S. Yamazaki, Ming L. Kuang, Marvin P. Kraska
-
Patent number: 9227630Abstract: A method of smoothing hybrid vehicle engine shutdown. A powered and rotating electric machine is used to slow deceleration of an unpowered and rotating engine by transferring torque through a clutch from the machine to the unpowered engine. Prior to the machine being powered, torque may be transferred through the clutch from the unpowered and rotating engine to the unpowered machine to accelerate passage of the engine through a resonance frequency.Type: GrantFiled: February 17, 2014Date of Patent: January 5, 2016Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ryan A. McGee, Rajit Johri, Wei Liang, Mark S. Yamazaki, Xiaoyong Wang, Ming L. Kuang
-
Patent number: 9187081Abstract: A method for controlling vehicle regenerative braking includes decreasing regenerative braking, provided a converter clutch is locked, such that regenerative braking torque reaches zero before a converter clutch opens due to vehicle speed reaching a reference speed; decreasing regenerative braking, provided the converter clutch is scheduled to open, such that regenerative braking torque reaches zero before the converter clutch opens due to vehicle speed reaching the reference speed; and braking the vehicle using wheel brakes.Type: GrantFiled: September 25, 2013Date of Patent: November 17, 2015Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Zhengyu Dai, Yanan Zhao, Felix Nedorezov, Mark S. Yamazaki, Philip J. Wiethe, Jr.
-
Publication number: 20150283989Abstract: Calibration of an engine disconnect clutch for a hybrid electric powertrain. The clutch is prestroked while an engine and machine are stopped. A machine torque is increased until the machine starts rotating. A pressure of the clutch is adjusted as a function of a torque produced by the machine when the machine started rotating.Type: ApplicationFiled: April 2, 2014Publication date: October 8, 2015Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Wei Liang, Daniel S. Colvin, Rajit Johri, Ryan A. McGee, Xiaoyong Wang, Bernard D. Nefcy, Mark S. Yamazaki, Ming L. Kuang, Marvin P. Kraska
-
Patent number: 9145128Abstract: A method for controlling a vehicle regenerative braking event includes maintaining a converter clutch closed while braking, while an engine connected to the impeller is running, opening the converter clutch when impeller speed reaches a reference speed difference relative to engine idle speed, and while the engine is off, opening the converter clutch when impeller speed reaches a speed required for a transmission pump, connected to an impeller, to produce line pressure at a desired magnitude.Type: GrantFiled: October 15, 2013Date of Patent: September 29, 2015Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Xiaoyong Wang, Mark S. Yamazaki, Wei Liang, Rajit Johri, Ryan A. McGee, Ming L. Kuang
-
Publication number: 20150266481Abstract: A method for controlling regenerative braking in a hybrid electric powertrain includes using an e-pump to supply fluid to a transmission provided an indication that a torque converter clutch disengagement will occur under current powertrain operating conditions is present, and discontinuing use of the e-pump and using a mechanical pump to supply fluid to the transmission provided the indication that a torque converter clutch disengagement will occur under current powertrain operating conditions is absent.Type: ApplicationFiled: March 18, 2014Publication date: September 24, 2015Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Felix Nedorezov, Hong Jiang, Zhengyu Dai, Mark S. Yamazaki, Daniel S. Colvin
-
Publication number: 20150232086Abstract: A method of smoothing hybrid vehicle engine shutdown. A powered and rotating electric machine is used to slow deceleration of an unpowered and rotating engine by transferring torque through a clutch from the machine to the unpowered engine. Prior to the machine being powered, torque may be transferred through the clutch from the unpowered and rotating engine to the unpowered machine to accelerate passage of the engine through a resonance frequency.Type: ApplicationFiled: February 17, 2014Publication date: August 20, 2015Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ryan A. McGee, Rajit Johri, Wei Liang, Mark S. Yamazaki, Xiaoyong Wang, Ming L. Kuang
-
Publication number: 20150105214Abstract: A method for controlling a vehicle regenerative braking event includes maintaining a converter clutch closed while braking, while an engine connected to the impeller is running, opening the converter clutch when impeller speed reaches a reference speed difference relative to engine idle speed, and while the engine is off, opening the converter clutch when impeller speed reaches a speed required for a transmission pump, connected to an impeller, to produce line pressure at a desired magnitude.Type: ApplicationFiled: October 15, 2013Publication date: April 16, 2015Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Xiaoyong Wang, Mark S. Yamazaki, Wei Liang, Rajit Johri, Ryan A. McGee, Ming L. Kuang
-
Publication number: 20150087475Abstract: A method for controlling vehicle regenerative braking includes decreasing regenerative braking, provided a converter clutch is locked, such that regenerative braking torque reaches zero before a converter clutch opens due to vehicle speed reaching a reference speed; decreasing regenerative braking, provided the converter clutch is scheduled to open, such that regenerative braking torque reaches zero before the converter clutch opens due to vehicle speed reaching the reference speed; and braking the vehicle using wheel brakes.Type: ApplicationFiled: September 25, 2013Publication date: March 26, 2015Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Zhengyu Dai, Yanan Zhao, Felix Nedorezov, Mark S. Yamazaki, Philip J. Wiethe, JR.
-
Patent number: 8647231Abstract: A method for operating a vehicle powertrain includes driving first wheels using an electric machine, starting an engine, using a second electric machine driven by the engine to produce synchronous speed at a input of a transmission having a desired gear engaged, engaging a clutch that connects said input and the engine, and using the engine and the transmission to drive second wheels.Type: GrantFiled: July 7, 2010Date of Patent: February 11, 2014Assignee: Ford Global Technologies, LLCInventors: Ihab S. Soliman, Fazal U. Syed, Mark S. Yamazaki
-
Patent number: 8602939Abstract: A method for controlling vehicle creep includes controlling motor speed to produce the desired creep speed, if desired creep speed exceeds vehicle speed; controlling motor torque to produce the desired wheel torque, if desired wheel torque exceeds actual wheel torque; and controlling motor torque to decelerate the vehicle to creep speed, if vehicle speed is decreasing and exceeds the desired speed.Type: GrantFiled: July 5, 2011Date of Patent: December 10, 2013Assignee: Ford Global Technologies, LLCInventors: Mark S. Yamazaki, Marvin P. Kraska, Dan Colvin, Fazal U. Syed, Brandon R. Masterson
-
Patent number: 8433465Abstract: A method for operating a powertrain includes determining maximum and minimum series-drive power limits of powertrain electric components; operating in parallel-drive if vehicle speed exceeds a reference, demanded wheel power is between said limits, or demanded engine power exceeds a reference demanded engine power; and operating in series-drive if vehicle speed is less than a reference, demanded wheel power is between said limits, and demanded engine power is less than a reference engine power.Type: GrantFiled: June 8, 2010Date of Patent: April 30, 2013Assignee: Ford Global Technologies, LLCInventors: Mark S. Yamazaki, Fazal U. Syed
-
Publication number: 20130012355Abstract: A method for controlling vehicle creep includes controlling motor speed to produce the desired creep speed, if desired creep speed exceeds vehicle speed; controlling motor torque to produce the desired wheel torque, if desired wheel torque exceeds actual wheel torque; and controlling motor torque to decelerate the vehicle to creep speed, if vehicle speed is decreasing and exceeds the desired speed.Type: ApplicationFiled: July 5, 2011Publication date: January 10, 2013Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Mark S. Yamazaki, Marvin P. Kraska, Dan Colvin, Fazal U. Syed, Brandon R. Masterson
-
Publication number: 20120022731Abstract: A method for launching a vehicle includes determining that vehicle speed is less than a reference, demanded wheel power is less than a reference wheel power, and demanded engine power is less than a reference engine power; charging a battery using a generator driven by an engine; using an electric machine powered by the battery to drive vehicle wheels; and opening a clutch located in a drive path between a transmission and the generator.Type: ApplicationFiled: July 20, 2010Publication date: January 26, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ming L. Kuang, Fazal U. Syed, Per J. Jurland, Mark S. Yamazaki, Ihab S. Soliman, Mathew A. Boesch, Deepak Aswani
-
Publication number: 20120010041Abstract: A method for operating a vehicle powertrain includes driving first wheels using an electric machine, starting an engine, using a second electric machine driven by the engine to produce synchronous speed at a input of a transmission having a desired gear engaged, engaging a clutch that connects said input and the engine, and using the engine and the transmission to drive second wheels.Type: ApplicationFiled: July 7, 2010Publication date: January 12, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ihab S. Soliman, Fazal U. Syed, Mark S. Yamazaki
-
Publication number: 20110301792Abstract: A method for operating a powertrain includes determining maximum and minimum series-drive power limits of powertrain electric components; operating in parallel-drive if vehicle speed exceeds a reference, demanded wheel power is between said limits, or demanded engine power exceeds a reference demanded engine power; and operating in series-drive if vehicle speed is less than a reference, demanded wheel power is between said limits, and demanded engine power is less than a reference engine power.Type: ApplicationFiled: June 8, 2010Publication date: December 8, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Mark S. Yamazaki, Fazal U. Syed
-
Publication number: 20090033095Abstract: In a powertrain that includes an engine having a filter for removing particulate matter from engine exhaust gas, and an electric machine driveably connected to the engine, a method for controlling temperature of the filter including operating the engine to produce a magnitude of positive crankshaft power for driving the vehicle, increasing the temperature of the engine exhaust gas by operating the electric machine to increase load on the engine, and regenerating the particulate filter by passing engine exhaust gas at the increased temperature through the particulate filter.Type: ApplicationFiled: August 1, 2007Publication date: February 5, 2009Inventors: Deepak Aswani, Mathew A. Boesch, Ihab S. Soliman, Andrew J. Silveri, Fazal U. Syed, Mark S. Yamazaki