Hyundai Motor Company

Kia Motors Corporation

Kumlim Choi

Baekyu Kim

Chulmin Ahn

Sungtae Kim

SungGon Byun

KwangMin Choi

Keunseok Lee

Seongeun Park

Yongkak Choi

Junhoi Huh

Taesic Park

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.

Power transmission apparatus for hybrid electric vehicle

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.

Variable voltage control system and method for hybrid vehicle

Growing community of inventors

Seoul, South Korea

Kumlim Choi