Abstract: An electric oil pump apparatus for a hybrid vehicle, may include an electric motor having a motor rotor and a stator, wherein the motor rotor may be mounted on a rotary shaft, an oil pump having a pump rotor, wherein the pump rotor may be mounted on a rotary shaft, and a torsional damper installed on the rotary shaft of the motor rotor and a rotary shaft of the pump rotor between the motor rotor and the pump rotor.

Abstract: The present invention provides an apparatus and method for controlling the operation of an electric oil pump for creating a working fluid pressure in a transmission and a clutch for a hybrid vehicle, which can accurately reflect the viscosity characteristics of oil to accurately control the operation of the pump, instead of measuring the temperature of the oil to reflect the state of the oil. In preferred embodiments, the present invention provides an apparatus for controlling the operation of an electric oil pump, the apparatus including: a current detector for detecting a current applied to a motor of an electric oil pump; a rotational speed detector for detecting a rotational speed of the motor; and a controller for calculating a load torque of the motor based on the detection values of the current detector and the rotational speed detector, calculating a target rotational speed based on the detection values, and controlling the operation of the motor based on the target rotational speed.

Abstract: The present invention provides an apparatus and method for controlling the operation of an electric oil pump for creating a working fluid pressure in a transmission and a clutch for a hybrid vehicle, which can accurately reflect the viscosity characteristics of oil to accurately control the operation of the pump, instead of measuring the temperature of the oil to reflect the state of the oil. In preferred embodiments, the present invention provides an apparatus for controlling the operation of an electric oil pump, the apparatus including: a current detector for detecting a current applied to a motor of an electric oil pump; a rotational speed detector for detecting a rotational speed of the motor; and a controller for calculating a load torque of the motor based on the detection values of the current detector and the rotational speed detector, calculating a target rotational speed based on the detection values, and controlling the operation of the motor based on the target rotational speed.

Abstract: The six-speed automatic transmission includes five frictional elements and is efficiently controlled by a minimal number of spool valves and solenoid valves. Drivability is, thereby enhanced and weight and cost are reduced.

Abstract: The powertrain of a six-speed powertrain and a hydraulic control system includes a main shift section of first and second single pinion planetary gearsets, in which a first planet carrier is fixedly connected to a second ring gear. The powertrain also includes a first ring gear fixedly connected to a second planet carrier, and a first sun gear. The second planet carrier, and a second sun gear are variably connected to an input shaft through first, second, and third clutches, respectively. A connecting member connecting the first ring gear and the second planet carrier is variably connected to a housing through a first brake and a first one-way clutch. The second sun gear being variably connected to the housing by a second brake.

Abstract: The six-speed automatic transmission includes five frictional elements and is efficiently controlled by a minimal number of spool valves and solenoid valves. Drivability is, thereby enhanced and weight and cost are reduced.

Abstract: A hydraulic control system for an automatic transmission, in which four forward speeds and one reverse speed are realized by the use of a reduced number of friction elements compared to the prior art such that overall structure is simplified, the weight of the automatic transmission is decreased, and the cost of production is reduced. In the hydraulic control system, hydraulic pressure generated in an oil pump is controlled to a predetermined level by a regulator valve, and part of this pressure is supplied as operational pressure of a damper clutch and to a reducing valve, and another part of this pressure is supplied to a hydraulic pressure control section for the selective supply of operational pressure to friction elements that are engaged in each shift range and speed, the hydraulic pressure control section including a shift control assembly, a hydraulic pressure control assembly, a switching assembly, a fail-safe assembly, and a N-R control assembly.

Abstract: The present invention relates to a hydraulic control system for an automatic transmission, in which four forward speeds and one reverse speed are realized by the use of a reduced number of friction elements compared to the prior art such that overall structure is simplified, the weight of the automatic transmission is decreased, and the cost of production is reduced. In the hydraulic control system, hydraulic pressure generated in an oil pump is controlled to a predetermined level by a regulator valve, and part of this pressure is supplied as operational pressure of a damper clutch and to a reducing valve, and another part of this pressure is supplied to a hydraulic pressure control section for the selective supply of operational pressure to friction elements that are engaged in each shift range and speed, the hydraulic pressure control section including a shift control assembly, a hydraulic pressure control assembly, a switching assembly, a fail-safe assembly, and a N-R control assembly.

Abstract: The powertrain of a six-speed powertrain and a hydraulic control system includes a main shift section of first and second single pinion planetary gearsets, in which a first planet carrier is fixedly connected to a second ring gear. The powertrain also includes a first ring gear fixedly connected to a second planet carrier, and a first sun gear. The second planet carrier, and a second sun gear are variably connected to an input shaft through first, second, and third clutches, respectively. A connecting member connecting the first ring gear and the second planet carrier is variably connected to a housing through a first brake and a first one-way clutch. The second sun gear being variably connected to the housing by a second brake.

Abstract: A hydraulic control system for a continuously variable transmission includes a pressure regulator, a shift controller, a forward/reverse controller, and a torque converter operation controller. The pressure regulator includes a primary regulator valve for regulating hydraulic pressure supplied from an oil pump, a first solenoid valve, a secondary regulator valve, and a solenoid supply valve. The shift controller includes a shift ratio control valve, and a second solenoid valve controlling the shift ratio control valve. The forward/reverse controller includes a pressure control valve, a third solenoid valve controlling the pressure control valve, a manual valve, and first and second friction elements acting respectively as forward and reverse operational elements. The torque converter operation controller includes a torque converter feed valve receiving hydraulic pressure from the pressure regulator, a lock-up clutch control valve, and a fourth solenoid valve controlling the lock-up clutch control valve.