Patents by Inventor Davorin David Hrovat
Davorin David Hrovat 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: 10180186Abstract: A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.Type: GrantFiled: April 21, 2016Date of Patent: January 15, 2019Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Gregory Michael Pietron, Yuji Fujii, Joseph F. Kucharski, Nicholas Joseph Witte, Stephen Michael Cicala, Bradley Dean Riedle, Diana Yanakiev, Nimrod Kapas, Davorin David Hrovat
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Patent number: 10000103Abstract: A method of controlling a vehicle active suspension system may include, in response to an object being detected forward of the vehicle and a vehicle speed exceeding a threshold, identifying an object classification associated with the object. The method may further include actuating the active suspension system to induce a vibration signature in the vehicle based on the object classification such that a different identified object classification corresponds to a different vibration signature.Type: GrantFiled: May 2, 2017Date of Patent: June 19, 2018Assignee: Ford Global Technologies, LLCInventors: Davorin David Hrovat, Li Xu, Eric Hongtei Tseng
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Publication number: 20170297401Abstract: A method of controlling a vehicle active suspension system may include, in response to an object being detected forward of the vehicle and a vehicle speed exceeding a threshold, identifying an object classification associated with the object. The method may further include actuating the active suspension system to induce a vibration signature in the vehicle based on the object classification such that a different identified object classification corresponds to a different vibration signature.Type: ApplicationFiled: May 2, 2017Publication date: October 19, 2017Inventors: Davorin David HROVAT, Li XU, Eric Hongtei TSENG
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Patent number: 9669677Abstract: A vehicle active suspension system, a vehicle, and a method of controlling a vehicle active suspension system are provided. The vehicle active suspension system may include a suspension actuator and a controller. The controller may be programmed to, in response to an object being detected within a predetermined range of a vehicle while a vehicle speed is greater than a threshold speed, categorize the object into at least one of a plurality of predefined categories. The controller may be further programmed to actuate the suspension actuator according to a predefined actuation profile.Type: GrantFiled: May 28, 2015Date of Patent: June 6, 2017Assignee: Ford Global Technologies, LLCInventors: Davorin David Hrovat, Li Xu, Eric Hongtei Tseng
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Publication number: 20160347143Abstract: A vehicle active suspension system, a vehicle, and a method of controlling a vehicle active suspension system are provided. The vehicle active suspension system may include a suspension actuator and a controller. The controller may be programmed to, in response to an object being detected within a predetermined range of a vehicle while a vehicle speed is greater than a threshold speed, categorize the object into at least one of a plurality of predefined categories. The controller may be further programmed to actuate the suspension actuator according to a predefined actuation profile.Type: ApplicationFiled: May 28, 2015Publication date: December 1, 2016Inventors: DAVORIN DAVID HROVAT, LI XU, ERIC HONGTEI TSENG
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Publication number: 20160230882Abstract: A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.Type: ApplicationFiled: April 21, 2016Publication date: August 11, 2016Inventors: Gregory Michael Pietron, Yuji Fujii, Joseph F. Kucharski, Nicholas Joseph Witte, Stephen Michael Cicala, Bradley Dean Riedle, Diana Yanakiev, Nimrod Kapas, Davorin David Hrovat
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Patent number: 9360107Abstract: A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.Type: GrantFiled: August 13, 2014Date of Patent: June 7, 2016Assignee: Ford Global Technologies, LLCInventors: Gregory Michael Pietron, Yuji Fujii, Joseph F. Kucharski, Nicholas Joseph Witte, Stephen Michael Cicala, Bradley Dean Riedle, Diana Yanakiev, Nimrod Kapas, Davorin David Hrovat
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Patent number: 9297456Abstract: The rate of change of transmission output torque is computed based on the differential speeds of the axles and of the transmission output shaft adjusting for final drive ratio. The speed of the axle is measured by an anti-lock braking system and communicated to the transmission controller over a communications bus. To compensate for the delay introduced by the communications bus, a shift register delays the signal from the transmission output shaft speed sensor. The resulting estimate of rate of change of transmission output torque may be used directly to control the torque capacity of one or more transmission clutches. Additionally, the resulting estimate may be combined with an independent output torque estimate to yield a more accurate output torque estimate.Type: GrantFiled: March 31, 2014Date of Patent: March 29, 2016Assignee: Ford Global Technologies, LLCInventors: Michael Glenn Fodor, Hongtei Eric Tseng, Bradley Dean Riedle, Davorin David Hrovat
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Publication number: 20150276050Abstract: The rate of change of transmission output torque is computed based on the differential speeds of the axles and of the transmission output shaft adjusting for final drive ratio. The speed of the axle is measured by an anti-lock braking system and communicated to the transmission controller over a communications bus. To compensate for the delay introduced by the communications bus, a shift register delays the signal from the transmission output shaft speed sensor. The resulting estimate of rate of change of transmission output torque may be used directly to control the torque capacity of one or more transmission clutches. Additionally, the resulting estimate may be combined with an independent output torque estimate to yield a more accurate output torque estimate.Type: ApplicationFiled: March 31, 2014Publication date: October 1, 2015Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Michael Glenn Fodor, Hongtei Eric Tseng, Bradley Dean Riedle, Davorin David Hrovat
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Publication number: 20140350810Abstract: A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.Type: ApplicationFiled: August 13, 2014Publication date: November 27, 2014Inventors: Gregory Michael Pietron, Yuji Fujii, Joseph F. Kucharski, Nicholas Joseph Witte, Stephen Michael Cicala, Bradley Dean Riedle, Diana Yanakiev, Nimrod Kapas, Davorin David Hrovat
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Patent number: 8827060Abstract: A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.Type: GrantFiled: September 13, 2012Date of Patent: September 9, 2014Assignee: Ford Global Technologies, LLCInventors: Gregory Michael Pietron, Yuji Fujii, Joseph F. Kucharski, Nicholas Joseph Witte, Stephen Michael Cicala, Bradley Dean Riedle, Diana Yanakiev, Nimrod Kapas, Davorin David Hrovat
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Publication number: 20140069759Abstract: A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.Type: ApplicationFiled: September 13, 2012Publication date: March 13, 2014Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Gregory Michael Pietron, Yuji Fujii, Joseph F. Kucharski, Nicholas Joseph Witte, Stephen Michael Cicala, Bradley Dean Riedle, Diana Yanakiev, Nimrod Kapas, Davorin David Hrovat
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Patent number: 8529405Abstract: A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a powertrain source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a powertrain source is modulated. A perceptible transmission output torque reduction during an upshift is avoided.Type: GrantFiled: November 27, 2012Date of Patent: September 10, 2013Assignee: Ford Global Technologies, LLCInventors: Yuji Fujii, Jahan Asgari, Davorin David Hrovat, Hong Jiang, Gregory Michael Pietron, Bradley Dean Riedle, Christopher John Teslak, Hongtei Eric Tseng
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Patent number: 8529406Abstract: A speed ratio shaft control for multiple ratio vehicle transmission has controlled release of an off-going transmission clutch and controlled engagement of an on-coming transmission clutch during a speed ratio upshift, at least one clutch being a friction torque establishing clutch. A controller, using shift-timing software strategy, actively manages in real time a clutch torque level for each clutch so that transient torque disturbances in a transmission torque output shaft are mitigated.Type: GrantFiled: November 30, 2012Date of Patent: September 10, 2013Assignee: Ford Global Technologies, LLCInventors: Yujii Fujii, Jahan Asgari, Davorin David Hrovat, Hong Jiang, Gregory Michael Pietron, Bradley Dean Riedle, Christopher John Teslak, Hongtei Eric Tseng
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Patent number: 8483958Abstract: A computer-implemented method for road identification includes receiving a request at a vehicle computing system for a crossroad identification. The method also includes determining, via the vehicle computing system, a crossroad along a route-being-traveled corresponding to the request. The method further includes outputting, from the vehicle computing system to an output, the determined crossroad responsive to the request.Type: GrantFiled: December 20, 2010Date of Patent: July 9, 2013Assignee: Ford Global Technologies, LLCInventors: Thomas Edward Pilutti, Davorin David Hrovat
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Publication number: 20130054050Abstract: A computer implemented method for efficiently operating a vehicle includes sending vehicle configuration data and route related data to a remote system. The method further includes receiving an optimization strategy, based at least in part on the vehicle configuration data and route related data, for optimizing at least one vehicle adjustable system for an upcoming road segment. Also, the method includes controlling the at least one vehicle adjustable system based on the optimization strategy over the upcoming road segment.Type: ApplicationFiled: August 24, 2011Publication date: February 28, 2013Inventors: Dimitar Petrov Filev, Davorin David Hrovat
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Patent number: 8337361Abstract: A speed ratio shaft control for multiple ratio vehicle transmission has controlled release of an off-going transmission clutch and controlled engagement of an on-coming transmission clutch during a speed ratio upshift, at least one clutch being a friction torque establishing clutch. A controller, using shift-timing software strategy, actively manages in real time a clutch torque level for each clutch so that transient torque disturbances in a transmission torque output shaft are mitigated.Type: GrantFiled: August 30, 2010Date of Patent: December 25, 2012Assignee: Ford Global Technologies, LLCInventors: Yuji Fujii, Jahan Asgari, Davorin David Hrovat, Hong Jiang, Gregory Michael Pietron, Bradley Dean Riedle, Christopher John Teslak, Hongtei Eric Tseng
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Patent number: 8328688Abstract: A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided.Type: GrantFiled: August 18, 2010Date of Patent: December 11, 2012Assignee: Ford Global Technologies, LLCInventors: Yuji Fujii, Jahan Asgari, Davorin David Hrovat, Hong Jiang, Gregory Michael Pietron, Bradley Dean Riedle, Christopher John Teslak, Hongtei Eric Tseng
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Publication number: 20120158292Abstract: A computer-implemented method for road identification includes receiving a request at a vehicle computing system for a crossroad identification. The method also includes determining, via the vehicle computing system, a crossroad along a route-being-traveled corresponding to the request. The method further includes outputting, from the vehicle computing system to an output, the determined crossroad responsive to the request.Type: ApplicationFiled: December 20, 2010Publication date: June 21, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Thomas Edward Pilutti, Davorin David Hrovat
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Publication number: 20110184612Abstract: A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided.Type: ApplicationFiled: August 18, 2010Publication date: July 28, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Yuji Fujii, Jahan Asgari, Davorin David Hrovat, Hong Jiang, Gregory Michael Pietron, Bradley Dean Riedle, Christopher John Teslak, Hongtei Eric Tseng