Selector Valve Overrule Patents (Class 477/134)
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Patent number: 9927025Abstract: A control method and system for preventing misoperation of a shift lever of a vehicle are provided. In particular, when a driver manipulates the shift lever to select an automatic transmission mode or a manual transmission mode, shifting into an unintended mode attributable to misoperation is prevented. Therefore, the control method and system improve reliability in manipulating the shift lever and provide a safe driving environment to a driver.Type: GrantFiled: April 19, 2016Date of Patent: March 27, 2018Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ki Young Song, Chang Hyun Lee, Ean Soo Cho, Han Gil Park
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Patent number: 8275528Abstract: Methods and systems for managing acceleration of a motor vehicle having an automatic transmission by controlling transmission turbine acceleration are provided. A desired transmission turbine acceleration is determined based on vehicle speed, turbine speed, and other information obtained from the vehicle transmission. One or more torque limits are determined as a function of the turbine acceleration. The torque limits are applied to manage acceleration of the vehicle.Type: GrantFiled: February 21, 2008Date of Patent: September 25, 2012Assignee: Allison Transmission, Inc.Inventor: John P Kresse
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Publication number: 20080058158Abstract: An ECU for a vehicle equipped with an automatic transmission includes a detection unit that detects a position of a transmission selection member manipulated by a driver; a determination unit that determines whether a gear step is abnormal when a preset time has elapsed after the transmission selection member is shifted from a drive position to a neutral position. The ECU further includes a control unit that controls the automatic transmission such that if the transmission selection member is shifted from the neutral position to the drive position when the gear step has been determined to be abnormal, a shock generated by the engagement of the frictional engagement elements is reduced.Type: ApplicationFiled: September 6, 2007Publication date: March 6, 2008Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Nobufusa KOBAYASHI, Toshio Sugimura, Tomohiro Asami, Takaaki Tokura
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Patent number: 6154700Abstract: An integrated system for automatically controlling the operation of both an automated mechanical transmission and a multiple speed axle assembly in a vehicle drive train assembly includes a transmission actuator for operating the transmission in any one of a plurality of transmission gear ratios. The system further includes an axle actuator for operating the axle assembly in any one of a plurality of axle gear ratios. An electronic controller is provided for operating the transmission in a desired one of the plurality of transmission gear ratios and for operating the axle assembly in a desired one of the plurality of axle gear ratios to provide a desired overall gear ratio for the vehicle. To accomplish this, the electronic controller is responsive to one or more input signals that represent operating parameters of the vehicle.Type: GrantFiled: December 31, 1997Date of Patent: November 28, 2000Assignee: Dana CorporationInventor: Charles R. Jones
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Patent number: 5762580Abstract: A rotary switch, used to select the operating range of an automatic transmission, controls solenoid-operated valves corresponding to the selected range to open and close a connection between a range valve assembly and a control pressure source. A forward range selection electric circuit includes a forward range high side driver, a solenoid-operated control valve, the rotary switch, a power source, and a current monitor. There is a similar circuit for the reverse range. A forward range valve and reverse range valve respond to control pressure produced by the circuit to open a fluid pressure source to a line that is pressurized to produce forward drive, a second position opens a connection between the fluid pressure source and a line that is pressurized to produce reverse drive and vents those lines to sump.Type: GrantFiled: June 6, 1994Date of Patent: June 9, 1998Assignee: Ford Global Technologies, Inc.Inventors: Kenneth Gerard Walega, Robert Clayton Roethler, John Arthur Daubenmier, Eldon L. Goates
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Patent number: 5658219Abstract: An automatic transmission for outputting shifting commands by manual operation of a manual shift lever in addition to an automatic shifting. When a first-stage shifting command is output, a clutch timer is set. When a second-stage shifting command is output during counting by the clutch timer, the second-stage shifting is prohibited. A shifting command storage timer is set simultaneously with the prohibition of the second-stage shifting. If the time is counted up by the clutch timer during counting by the shifting command storage timer, the second-stage shifting is permitted at this time point. If the time is counted up by the shifting command storage timer earlier than by the clutch timer, the second-stage shifting command is canceled. Thus, the first- and second-stage shifting operations are prevented from being continuously conducted, thereby suppressing the time lag required for the engagement of the hydraulic engagement element to the minimum.Type: GrantFiled: January 30, 1996Date of Patent: August 19, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Noboru Kondo, Kenzo Nishida
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Patent number: 5592851Abstract: A control system and method for an automated mechanical transmission system (310) operable in a hold mode of operation (H) is provided. When operating in the hold mode of operation, if override conditions (ES>ES.sub.MAX, ES<ES.sub.MIN, cruise control resume mode) are sensed, the hold mode is overridden and a shift from the currently engaged gear ratio (GR.sub.C) into a desirable gear ratio (GR.sub.D) is automatically initiated.Type: GrantFiled: November 1, 1995Date of Patent: January 14, 1997Assignee: Eaton CorporationInventors: Ian R. J. Bates, Michael Daly, Paul M. Fowler
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Patent number: 5545108Abstract: In an arrangement and in a method for controlling an automatic shift device of a gear-change transmission, gear shifts which are initiated by the driver via the selector device and which would result in inadmissible engine speeds are prevented and it only becomes possible to permit them again via stored shift-line characteristic diagrams.Type: GrantFiled: June 16, 1995Date of Patent: August 13, 1996Assignee: Mercedes-Benz AGInventors: Gerhard Wagner, Rainer Wuest
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Patent number: 5445578Abstract: A hydraulic control for a power transmission has an electronically operated mode during normal operation. In the event of loss of electrical power, a power interrupt valve is operable in conjunction with a manual valve to direct fluid pressure to the proper devices as selected by the operator, thereby permitting operation to continue in a manual override mode.Type: GrantFiled: December 17, 1993Date of Patent: August 29, 1995Assignee: General Motors CorporationInventors: Melissa M. Koenig, William J. Vukovich