Abstract:
A shift control method for a vehicle having a double clutch transmission may include determining whether or not a speed change may be between transmission gears which may be allocated to a same input shaft, determining whether or not a gear of the input shaft may be released, when the gear of the input shaft may be released, engaging working parts of a clutch of the input shaft with each other in a range before synchronization of a final target transmission gear starts.
Abstract:
A method of estimating transmission torque of a dry clutch, may include a) slowly releasing a dry clutch until a slip of the dry clutch occurs, b) acquiring and storing stroke of an actuator and torque of an engine at a starting time point at which the slip of the dry clutch occurs at step a), and c) determining the stroke of the actuator and the transmission torque of the dry clutch at the starting time point at which the slip of the dry clutch occurs, by using the stroke of the actuator and the torque of the engine stored at step b).
Abstract:
A method for controlling synchronization of an automated manual transmission includes: a step of dividing synchronization section that divides the entire synchronization section where synchronization is performed into a plurality of synchronization sections in accordance with the speed of the synchronization; a step of setting the rate of change of a target number of revolutions that sets the rate of change of a target number of revolutions of an input shaft in accordance with the speed of the synchronization; and a step of synchronization that performs feedback control such that the rate of change of the number of revolutions of the input shaft is synchronized while following the rate of change of a target number of revolutions.
Abstract:
A shift lever operation structure may include a shift plate, which moves along with a shift lever so that either manual or automatic mode is selected, and has an engaging part. An engaging plate may have a connection part corresponding to the engaging part so that, during the automatic mode, the engaging plate engages with the shift plate, and during the manual mode, the engaging plate is disengaged from the shift plate. An elastic member may be assembled with the connection part of the engaging plate such that the elastic member is deformed by the insertion of the engaging part into the connection part.
Abstract:
An estimating method for transmitting torque of a dry type clutch in a vehicle, may include a slip determining step of determining by a processor whether only one clutch slips between an engine and a transmission, a transmitting torque estimating step of estimating a current transmitting torque of the dry type clutch by using a torque observer when the only one clutch slips as a result of performing the slip determining step, and an updating step of reflecting the current transmitting torque of the dry type clutch estimated in the transmitting torque estimating step and an actuator torque in the transmitting torque estimating step to a T-S (Torque-Stroke) curve.
Abstract:
An electric water pump, which can not only ensure more reliable waterproof and cooling performance, provides enhanced durability and operational reliability, and is able to reduce the number of parts and has a more compact structure, compared to the conventional technique.
Abstract:
A cooling system for an engine, may include a low temperature radiator; an intercooler installed to receive a coolant cooled from the low temperature radiator and restore the coolant to the low temperature radiator again after heat exchange; a water pump installed to supply the coolant to the intercooler by pumping the coolant cooled from the low temperature radiator; a motorized supercharger installed to receive the coolant from the intercooler; and a reservoir installed to store the coolant passing through the motorized supercharger and deliver the coolant to a coolant line between the low temperature radiator and the water pump.
Abstract:
A control method for a vehicle with a Dual Clutch Transmission (DCT) may include: determining whether it is a wheel speed-unknown state by a TCU, determining whether an input shaft speed sensor is in a normal state when it is the wheel speed-unknown state, determining whether IG-OFF occurs when it is the wheel speed-unknown state and the input shaft speed sensor IS for is in a normal state, storing information related to the current wheel speed-unknown state and an output shaft speed of the DCT determined by the input shaft speed sensor, determining whether the TCU is not in TCU latch-off and whether it was the wheel speed-unknown state immediately before IG-OFF on the basis of the stored data, when IG-ON occurs, and performing pre-engaging on the basis of the DCT output shaft speed stored immediately after IG-OFF, when the TCU is not in latch-off and it was the wheel speed-unknown state immediately before IG-OFF.
Abstract:
A variable geometry turbocharger (VGT) for a vehicle, may include a turbine wheel; a turbine housing configured to rotatably support the turbine wheel, and provided with a passage for receiving exhaust gas from a radially external side of the turbine wheel and discharging the exhaust gas in an axial direction of the turbine wheel; a disk body provided in the passage of the turbine housing, and provided therein with a bypass line such that the exhaust gas bypasses the turbine wheel; and a plurality of vanes provided between the disk body and the turbine housing to form a variable nozzle for controlling a flow of the exhaust gas flowing radially inwardly of the turbine wheel.
Abstract:
A transmission for an electric vehicle, may include a concentric deceleration device for receiving power from a motor shaft and for decelerating; an output shaft disposed in parallel with the input shaft; a hollow shaft rotatably provided on the input shaft; a clutch device provided to switch the transmission state of power from the input shaft to the hollow shaft; a first synchronizer having a hub fixed to the input shaft; a second synchronizer having a hub fixed to the hollow shaft; a plurality of driving gears having different sizes and provided on the input shaft and the hollow shaft to be engaged with at least one of the first synchronizer and the second synchronizer; and a plurality of driven gears provided on the output shaft to be engaged with the plurality of driving gears to form different shift ratios, respectively.