Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for controlling dct shifting of a vehicle

A vehicle and controller technology, applied in transmission control, hybrid vehicles, motor vehicles, etc., can solve the problems of reduced regenerative braking, long shift time, and long time.

Active Publication Date: 2020-12-25
HYUNDAI MOTOR CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this synchronization process is performed passively by the friction force of the friction elements, and therefore takes a relatively long time to achieve
This results in a considerably longer time for gear changes, which reduces the drivability of the vehicle, and results in a reduced amount of regenerative braking when changing gears before the vehicle comes to a stop

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling dct shifting of a vehicle
  • Method for controlling dct shifting of a vehicle
  • Method for controlling dct shifting of a vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0039] Referring now to the drawings, the same reference numerals are used to designate the same or similar parts in the different drawings.

[0040] figure 1 is a structure of a hybrid vehicle of a transmission-mounted electric device (TMED) type having a dual-clutch transmission (DCT) to which the present invention can be applied, in which an engine clutch EC is included between the engine E and the electric motor M for controlling power , and the engine E is connected to a hybrid starter generator (HSG), so that in a state where the engine clutch is disengaged, it is possible to perform an independent engine start and use engine power to generate electricity.

[0041] The motor M is connected to a DCT which has an odd gear shaft ODD and an even gear shaft EVEN and an output shaft (OUT). Between the electric motor and the odd-numbered gear sha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a method for controlling gear shifting of a dual clutch transmission (DCT) of a vehicle, the method comprising: determining by a controller whether there is a situation requiring a coaxial gear shift, this step being referred to as the step of determining the start of a gear shift ; If coaxial shifting is required, the controller will release the current gear to neutral while keeping the clutch engaged. This step is called the step of forming neutral; after the step of forming neutral, the control The controller controls the drive source of the vehicle to synchronize the input shaft speed to the target input shaft speed obtained by multiplying the current output shaft speed by the gear ratio of the target gear, this step is called the step of controlling the synchronous speed; and once the input shaft speed Synchronized with the target input shaft speed, the shift is accomplished by the controller by engaging the target gear, a step referred to as the step of completing the shift.

Description

technical field [0001] The present invention relates to a technique for performing a gear shift while running in a transmission mounted electric device (TMED) type hybrid vehicle having a dual clutch transmission (DCT). Background technique [0002] A transmission mounted electric device (TMED) type hybrid vehicle having a dual clutch transmission (DCT) has an electric motor mounted on the DCT and an engine clutch between the electric motor and the engine. The power from the electric motor is transmitted to the odd gear shaft for realizing the odd gear stage and the even gear shaft for realizing the even gear stage through the dual clutch of the DCT, where the power is supplied to the odd gear stage One clutch is called the odd side clutch, while the other clutch that supplies power to the even gear shaft is called the even side clutch. [0003] This type of DCT usually has the gears alternately arranged between the odd and even gear shafts, so sequential shifts that altern...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/113B60W10/06B60W10/08B60W10/02B60W20/10B60W30/188
CPCB60W10/02B60W10/06B60W10/08B60W10/10B60W20/00B60W2710/105B60W2710/083B60W2710/0666B60W2510/1015F16H61/04F16H61/688F16H2061/0422F16H2061/0444
Inventor 方载盛玄载奎金尚准郑泰熙
Owner HYUNDAI MOTOR CO LTD