Patents by Inventor Kumlim Choi

Kumlim Choi 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: 9555699
    Abstract: A transmission for a vehicle may include first and second input shafts, first and second shifting output units, a reverse speed idle unit and an electric driving force unit. Each input shaft may include a plurality of input gears having different numbers of gear teeth. The second input shaft may be hollow and disposed at a front side of the first input shaft without any rotational interference with the first input shaft. Each shifting output unit may include an output shaft, shift rotational driving force transferred through shifting gears selectively outer-engaging with corresponding input gears by a synchronizing unit and output the shifted rotational driving force through an output gear. The reverse speed idle unit may regulate reverse speed shifting. The electric driving force unit may selectively transfer rotational driving force of a motor/generator to the first input shaft or the second shifting output unit.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: January 31, 2017
    Assignee: Hyundai Motor Company
    Inventors: Junhoi Huh, Kwangmin Choi, Taesic Park, Baekyu Kim, Seongeun Park, Chulmin Ahn, Sunggon Byun, Kumlim Choi, Keunseok Lee
  • Publication number: 20160082822
    Abstract: A transmission for a vehicle may include first and second input shafts, first and second shifting output units, a reverse speed idle unit and an electric driving force unit. Each input shaft may include a plurality of input gears having different numbers of gear teeth. The second input shaft may be hollow and disposed at a front side of the first input shaft without any rotational interference with the first input shaft. Each shifting output unit may include an output shaft, shift rotational driving force transferred through shifting gears selectively outer-engaging with corresponding input gears by a synchronizing unit and output the shifted rotational driving force through an output gear. The reverse speed idle unit may regulate reverse speed shifting. The electric driving force unit may selectively transfer rotational driving force of a motor/generator to the first input shaft or the second shifting output unit.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 24, 2016
    Applicant: Hyundai Motor Company
    Inventors: Junhoi HUH, Kwangmin CHOI, Taesic PARK, Baekyu KIM, Seongeun PARK, Chulmin AHN, Sunggon BYUN, Kumlim CHOI, Keunseok LEE
  • Publication number: 20150183425
    Abstract: An injector correcting apparatus of a hybrid electric vehicle may include an engine generating power by combustion of a fuel, a motor supporting power of the engine and selectively operating as a generator, a clutch provided between the engine and the motor, an injector injecting the fuel to a combustion chamber of the engine, a driving information detector detecting driving information of a vehicle including driving distance of the vehicle, vehicle speed, coolant temperature, fuel temperature, and state of charge (SOC) of a battery, and a controller correcting fuel injection by increasing a fuel amount supplied to the combustion chamber step-by-step when a correcting condition of the injector derived from the driving information detected by the driving information detector is satisfied, while the vehicle is coasting.
    Type: Application
    Filed: November 13, 2014
    Publication date: July 2, 2015
    Applicant: Hyundai Motor Company
    Inventors: Kumlim CHOI, Yoonsung Koo
  • Patent number: 8531053
    Abstract: A system for controlling voltage to be supplied to electronic devices in a hybrid vehicle that includes: a main battery for storing power to be supplied to a motor of the vehicle; a sub-battery for storing power to be supplied to electronic devices of the vehicle; a low-voltage DC/DC converter (LDC) for converting a high voltage of the main battery into a low voltage and providing the low voltage to the sub-battery and the electronic devices; and a power controller for controlling power of the main battery, the LDC, and the sub-battery. The power controller controls the voltage to be supplied to the electronic devices with a low voltage, a reference voltage higher than the low voltage, and a high voltage higher than the reference voltage in accordance with an idle stop state, a constant velocity traveling state, an acceleration state, and a deceleration state of the vehicle.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: September 10, 2013
    Assignees: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Yongkak Choi, Sungtae Kim, Kumlim Choi
  • Publication number: 20110025127
    Abstract: A system for controlling voltage to be supplied to electronic devices in a hybrid vehicle that includes: a main battery for storing power to be supplied to a motor of the vehicle; a sub-battery for storing power to be supplied to electronic devices of the vehicle; a low-voltage DC/DC converter (LDC) for converting a high voltage of the main battery into a low voltage and providing the low voltage to the sub-battery and the electronic devices; and a power controller for controlling power of the main battery, the LDC, and the sub-battery. The power controller controls the voltage to be supplied to the electronic devices with a low voltage, a reference voltage higher than the low voltage, and a high voltage higher than the reference voltage in accordance with an idle stop state, a constant velocity traveling state, an acceleration state, and a deceleration state of the vehicle.
    Type: Application
    Filed: December 2, 2009
    Publication date: February 3, 2011
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventors: Yongkak Choi, Sungtae Kim, Kumlim Choi
  • Publication number: 20090298642
    Abstract: An anti roll back (ARB) control system and an ARB control method are provided, which can prevent a hybrid vehicle, of which the clutch disposed between the driving wheel and the engine is open when the vehicle stops, from being unexpectedly moving downward when the vehicle is restarted on a slope.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 3, 2009
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Kumlim Choi