Hill-holder Patents (Class 192/219.1)
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Patent number: 10598278Abstract: A method for maintaining idle noise refinement in a vehicle is provided. The method may include performing a D-range neutral control, wherein a controller is configured to apply auto hold threshold values to conditions for entering an auto hold control in a neutral control state, and wherein the auto hold threshold values are determinant of an entry into the D-range neutral control such that the auto hold threshold values limit the conditions for entering the auto hold control.Type: GrantFiled: December 12, 2017Date of Patent: March 24, 2020Assignees: Hyundai Motors Company, Kia Motors CorporationInventors: Dong-Chul Lee, In-Soo Jung
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Patent number: 10107361Abstract: A transmission for a vehicle may include a first input shaft continuously receiving power from an engine, a second input shaft selectively receiving power from the engine, a first output shaft and a second output shaft disposed in parallel with the first input shaft and the second input shaft, an initial shift device including a plurality of driving gears on the second input shaft, a plurality of driven gears on the first output shaft and the second output shaft for making a series of gear shift ranges, and a plurality of synchronizers selectively making a predetermined gear shift range of the gear shift ranges made by the driving gears and the driven gears, a duplicate shift device configured to make duplicate gear shift ranges, a first output gear disposed on the first output shaft to draw power from the first output shaft, and a one-way clutch.Type: GrantFiled: August 5, 2015Date of Patent: October 23, 2018Assignee: Hyundai Motor CompanyInventors: Ki Jong Park, Soon Ki Eo, Chon Ok Kim
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Patent number: 9958032Abstract: A transmission includes: a first input shaft selectively receiving power from an engine; a second input shaft continuously receiving power from the engine; a first output shaft arranged in parallel with the first input shaft and the second input shaft; a differential drawing power from the first output shaft and a second output shaft; a first shift unit providing desired gear shifts; a second shift unit to carry out duplicate gear shifts; and a one-way clutch to transmit power from the engine to the differential. In particular, the duplicate gear shifts has a gear ratio substantially identical to a gear ratio of one of the gear shifts made by the first shift unit, and the one-way clutch is arranged in a power transmission line for transmitting the power from the engine to the differential through the second shift unit.Type: GrantFiled: August 5, 2015Date of Patent: May 1, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Soon Ki Eo, Hyun Chul Kim, Chon Ok Kim, Chae Hong Lim
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Patent number: 9869369Abstract: A transmission includes: a first input shaft selectively receiving power from an engine; a second input shaft receiving power from the engine; an output shaft disposed in parallel with the first input shaft; first and second countershafts, and first and second shift units; and a one-way clutch disposed in a power transmission line from the engine to the output shaft and through the second shift unit, transmitting power from the engine only to the output shaft. In particular, the first and second countershafts transmit power to the output shaft, the first shift unit carries out a series of desired gear shifts, and the second shift unit performs duplicate gear shifts one of which gear ratio is the same as one of gear ratios of the series of gear shifts made by the first shift unit.Type: GrantFiled: August 5, 2015Date of Patent: January 16, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Soon Ki Eo, Chon Ok Kim
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Patent number: 9014926Abstract: A method and system for diagnosing an operating status of an assisted start-up mode for a motor vehicle. The system includes a driving engine, a transmission including a mechanism determining a piece of engine rotation speed information, a piece of information on a position of an accelerator pedal of the vehicle, a piece of information on a position of a transmission, and a piece of information on torque transmitted to wheels, a detection mechanism producing a malfunction signal for the assisted start-up using the information received, a plurality of encoding mechanisms to produce a follow-up signal for each piece of calculated information received, and a memory saving the follow-up signals.Type: GrantFiled: March 5, 2009Date of Patent: April 21, 2015Assignee: Renault S.A.S.Inventor: Alessandro Monti
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Publication number: 20150021141Abstract: A system and method for conserving vacuum within a vehicle is described. In one example, a vacuum level in a working chamber of a vacuum operated brake booster is controlled so as to limit vacuum consumption.Type: ApplicationFiled: July 16, 2013Publication date: January 22, 2015Inventors: Ralph Wayne Cunningham, Ross Dykstra Pursifull, Russ William Ferguson
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Publication number: 20150021140Abstract: A system and method for conserving vacuum within a vehicle is described. In one example, vacuum is conserved via limiting volume expansion of a brake booster working chamber.Type: ApplicationFiled: July 16, 2013Publication date: January 22, 2015Inventors: Ralph Wayne Cunningham, Ross Dykstra Pursifull
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Patent number: 8600594Abstract: On condition that output of a torque of not lower than a preset reference torque from a motor continues for at least a predetermined time period in a vehicle stop state with output of a corresponding torque from the a second motor based on a detected accelerator opening, a torque command of the second motor is set to decrease the output torque of said motor by a torque decrease rate, which is set according to the corresponding torque and the accelerator opening in the vehicle stop state (initial accelerator opening). After a changeover of a current crowding phase in the second motor, the torque command of said motor is set to increase the output torque of said motor by a torque increase rate, which is set according to the accelerator opening in the vehicle stop state.Type: GrantFiled: November 7, 2007Date of Patent: December 3, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.Inventors: Takeshi Aoki, Kazuomi Okasaka, Yoichi Tajima, Kiyoshiro Ueoka
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Patent number: 8515640Abstract: A device for determining, when driving a vehicle, a mapping of torque transmitted by a clutch of the automobile based on a position of a clutch control member. The device includes a mechanism updating the mapping based on position thresholds of the clutch control member. The updating modifies values of the thresholds based on minimum and maximum values of the positions of the control member stored in the mapping and on current values of the thresholds.Type: GrantFiled: July 21, 2008Date of Patent: August 20, 2013Assignee: Renault S. A. S.Inventors: Alessandro Monti, Richard Pothin, Christophe Desfriches
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Publication number: 20120000743Abstract: A device operable in a transmission for substantially preventing vehicular rollback on an incline includes a shaft, a gear, a one-way clutch, and a pawl member. The gear is selectively connected for common rotation with the shaft. The gear is rotatable in a first rotary direction and a second rotary direction. The one-way clutch has an inner race and an outer race, where the inner race is connected to the gear and the outer race has an outer surface having a plurality of engaging teeth. The pawl member has a first end and a second end, where the first end is pivotly mounted to a transmission housing. The second end of the pawl has a first angled portion configured to releasably engage at least one of the plurality of engaging teeth of the outer race as the outer race rotates in the second rotary direction.Type: ApplicationFiled: July 2, 2010Publication date: January 5, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, Hamid Vahabzadeh, James B. Borgerson, Bret M. Olson, James M. Hart
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Patent number: 7934589Abstract: An exemplary embodiment of a Hill Start Aide system for a vehicle includes a brake system. The brake system including a brake actuator for manually actuating the brake system. The brake system is selectively configurable in a stopped configuration, where the brake system is manually maintained via the brake actuator such that a vehicle road wheel speed is about zero rpm, a released configuration, where the brake system will not generally inhibit rotation of at least one vehicle road wheel, and a control stop configuration, where the vehicle road wheel speed is about zero rpm. The Hill Start Aide system also includes a controller for at least partially controlling the brake system. The controller will selectively send a signal to maintain the brake system in the control stopped configuration when the brake actuator is manually released.Type: GrantFiled: January 24, 2008Date of Patent: May 3, 2011Assignee: Eaton CorporationInventors: Shane Groner, James M. Walker, Leon Duo, Marcell Amsallen, Ben Karrer, Gerard Devito
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Patent number: 7813859Abstract: When a vehicle stops, a brake control unit maintains a braking force applied on a wheel by a braking-force application unit for maintaining a halted state. In this state, if a driver depresses the accelerator pedal to execute starting of the vehicle, the braking force is gradually decreased, and the vehicle starts at a speed that accords with a degree of accelerator opening and a gradient of a road on which the vehicle is stopped. When a movement direction at this time is the same as a movement direction intended by the driver, the braking force is decreased to zero for smooth starting. When the movement direction is opposite to the intended movement direction, the braking force is increased to control the movement in the opposite direction, such that the movement changes from the opposite direction to the same direction, and finally, smooth starting in the desired direction is executed.Type: GrantFiled: November 27, 2007Date of Patent: October 12, 2010Assignee: Advics Co., Ltd.Inventors: Hiroaki Aizawa, Shinsuke Sakane, Masashi Kishimoto, Yuzo Imoto
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Patent number: 7762926Abstract: A hill-hold method and system for a vehicle with manual transmission provides automated brake release timing when the vehicle's clutch is still disengaged to minimize or even prevent backward coasting of such a vehicle on a non-zero grade or hill by delaying full release of the brakes when the vehicle operator is in the transition of releasing the brake pedal and moving to the accelerator pedal.Type: GrantFiled: December 22, 2006Date of Patent: July 27, 2010Assignee: Chrysler Group LLCInventor: Gregory E. Peterson
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Patent number: 7665808Abstract: A method and a device for automatically releasing an automatic parking brake at start-up. A transmitted torque estimation threshold value is determined that enables the vehicle movement to be balanced. Then, at start-up a loop for calculating the transmitted torque estimation is carried out so long as the calculated value does not exceed the threshold value. When the threshold is exceeded, an automatic parking brake-release command is produced.Type: GrantFiled: June 20, 2003Date of Patent: February 23, 2010Assignee: Renault S.A.S.Inventors: Philippe Deprez, Emmanuel Devaud, Philippe Planchon
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Patent number: 6849024Abstract: A starting clutch includes a planetary mechanism; a first clutch for outputting a torque to an outer diameter portion of the planetary mechanism; a second clutch for outputting the torque to an intermediate portion of the planetary mechanism; and a lock mechanism for locking a reactive force from an inner diameter portion of the planetary mechanism.Type: GrantFiled: November 5, 2001Date of Patent: February 1, 2005Assignees: NSK Ltd., NSK-Warner K.K.Inventors: Yoshitaka Hayashi, Hiroshi Fukushima, Takao Obara, Minao Umeda, Keeichi Minagi, Masao Shoji, Yoshio Kinoshita, Shiro Takeuchi, Tadashi Watanabe, Hirofumi Nakagomi, Tatsuro Miyoshi, Shigeharu Nishimura, Hiroshi Yabe, Nobuhiro Horiuchi
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Patent number: 6736754Abstract: In a method for operating a motor vehicle having an automatic transmission in the time of a selection action for a driving-mode range, first a driver's requirement for a change in the driving-mode range is transferred to a selection device, a change signal is then generated by the selection device, the change signal is subsequently transferred to a control unit, and, finally, a change in the driving-mode range of the automatic transmission is brought about by the control unit according to the change signal. In the time of the selection action for the driving-mode range, at least one braking device is actuated in an automated manner by the or a control unit. Drive-train oscillations may be reduced or avoided by the method.Type: GrantFiled: August 17, 2001Date of Patent: May 18, 2004Assignee: DaimlerChrysler AGInventors: Bernd Davids, Ulrich Eckle, Roland Flinspach, Günter Wörner
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Patent number: 6644454Abstract: An executed time of a backward slipping moderation control is counted by a timer, and after a predetermined period of time is elapsed, the control is terminated. Upon the termination of the control, a control of operation of a brake actuator is executed so that a wheel cylinder pressure is decreased with a gentle slope in comparison with a normal operation of the brake actuator for terminating the control. Where the backward slipping moderation control is executed by controlling a brake fluid pressure of the brake actuator, an acceleration &agr; of a vehicle is estimated. If the acceleration is larger than a predetermined value, a target pressure P is increased, thus generating a relatively large braking force.Type: GrantFiled: January 14, 2002Date of Patent: November 11, 2003Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushki KaishaInventors: Noritaka Yamada, Akira Nagae, Toshinobu Ota, Yasuhito Ishida
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Patent number: 6589134Abstract: Method, system and controller for electronically controlling a park-interlock device in a land-based vehicle are provided. The method allows for providing a driver-selectable shifter for selecting a respective one of a plurality of propulsion modes of the vehicle. One of the propulsion modes is a park mode. The method further allows for sensing at least one vehicle parameter for determining whether or not the park interlock device is to be actuated to a respective interlock state corresponding to the driver-selected mode and/or an operational mode automatically determined by a controller for stopping and starting during a Hill-hold function in an electric, hybrid electric vehicle. Memory is provided for storing nominal values for each vehicle parameter. A comparing action allows to compare the sensed vehicle parameters relative to the nominal parameter values stored in memory.Type: GrantFiled: September 27, 2001Date of Patent: July 8, 2003Assignee: Delphi Technologies, Inc.Inventors: John Derek Williams, Gerald Thomas Fattic