KR101724937B1

KR101724937B1 - Parking control method for vehicle

Info

Publication number: KR101724937B1
Application number: KR1020150149851A
Authority: KR
Inventors: 윤영민
Original assignee: 현대자동차주식회사
Priority date: 2015-10-28
Filing date: 2015-10-28
Publication date: 2017-04-18

Abstract

A parking control method of a DCT vehicle according to the present invention includes: a range sensing step in which a control unit senses a range position of a shift lever; And a controller controlling the plurality of gears on the same shaft of the transmission as a result of the range sensing step when the position of the shift lever is the P range.

Description

[0001] PARKING CONTROL METHOD FOR VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a parking control method for implementing a parking state of a vehicle using a transmission when parking a DCT vehicle.

DCT (Dual Clutch Transmission) is a transmission that uses two clutches and a shift mechanism of a conventional manual transmission. When the shift speed of the target speed change stage at the time of shifting is changed, .

In general, for vehicles equipped with a 9-speed DCT, five odd gear stages (1/3/5/7/9) and five even gear stages (2/4/6/8 / R) . However, since the number of gear positions of the same shaft is an odd number, it is necessary to use an actuator that controls the odd-numbered and even-numbered means together or an actuator that controls only one gear.

According to such an actuator configuration, when the speed change stages of the same transmission system are selected in an overlapping manner, the overlapping speed change stages become locked to each other, and an interlock phenomenon in which running is impossible can occur.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

KR 10-2014-0049856 A

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve such problems, and it is an object of the present invention to provide a control method of implementing a parking state of a vehicle by interlocking a transmission when the vehicle is parked with a DCT and the shift lever is at a P range. have.

According to another aspect of the present invention, there is provided a method for controlling parking of a DCT vehicle, the method comprising: a range sensing step of sensing a range position of a shift lever by a control unit; And a controller controlling the plurality of gears on the same shaft of the transmission as a result of the range sensing step when the position of the shift lever is the P range.

In the parking control step, the control unit may engage the even-numbered gear with the first actuator that is capable of engaging any one of the even-numbered gears except the R-stage gear, And the R-stage gear is engaged with the second actuator provided for the second actuator.

And the R-stage gear is fastened to the same shaft as the even-numbered gears.

And if the shift lever is in the R range as a result of performing the range sensing step, wait for the cranking of the engine, and then switch the first actuator to the neutral state.

And when the shift lever is in the N range or the D range as a result of the range sensing step, the controller waits until the cranking of the engine is performed, and switches the second actuator to the neutral state.

In the parking control step, the controller may select one of the even-numbered gears other than the R-stage gear and the one of the odd-numbered gears and engage the even-numbered gear with the first actuator provided so as to be able to be engaged, And the R gear is fastened by a second actuator provided so that the gears and the R gear can be engaged.

And the first actuator is capable of engaging the first gear of the hole means gears.

If the shift lever is in the R range as a result of the range sensing step, the first actuator may be switched to the neutral state or may be engaged in the first gear after waiting for cranking of the engine.

If the shift lever is in the N range or the D range as a result of the range detection step, the first actuator is engaged with the first gear and the second actuator is stopped in the neutral state .

After the parking control step, when the controller detects that the parallel parking switch is turned ON, the controller releases all of the plurality of gear stages locked on the same shaft or releases all of the plurality of gear stages except for the plurality of gear stages . &Lt; / RTI >

According to the parking control method of the DCT vehicle having the above-described structure, it is possible to implement the parking state of the vehicle through the speed change stage control without applying the parking system parts such as the parking brake, so that the cost is reduced and the degree of freedom The commerciality of the vehicle can be improved.

1 is a flowchart illustrating a method for controlling a parking of a DCT vehicle according to an embodiment of the present invention.
2 to 3 are diagrams showing a parking control apparatus for a DCT vehicle according to an embodiment of the present invention.
FIG. 4 is a table showing engagement of gears according to a parking control method of a DCT vehicle according to an embodiment of the present invention. Referring to FIG.

Hereinafter, a method for controlling parking of a DCT vehicle according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a flowchart illustrating a method for controlling a parking of a DCT vehicle according to an embodiment of the present invention. Referring to FIG. 1, a parking control method for a DCT vehicle includes a range sensing step (S10) in which a control unit senses a range position of a shift lever; If the shift lever is in the P range as a result of the range detection step (S10), the control unit may control the step (S20) of locking the plurality of gears on the same shaft of the transmission.

A shift device for a vehicle has been proposed in which a shift lever of an automatic transmission and a lever member of a parking brake are commonly used in order to maintain a stopped state of the vehicle. That is, when the shift lever is operated in the P range, the brake cable that is interlocked with the shift lever is pulled to operate the parking brake.

However, the present technology can induce the vehicle's stop state by controlling the engagement of the gears of the transmission in a vehicle equipped with the DCT, so that it is not necessary to apply the above-described parking device, and the package volume inside the vehicle can be reduced . In particular, the present technology can maintain the vehicle's stopped state by using an interlock phenomenon that occurs when a plurality of gears are engaged with one input shaft or an output shaft.

Specifically, in the parking control step, the control unit may couple the even-numbered gear to the first actuator that can be engaged with any one of the even-numbered gears other than the R-stage gear, It is possible to fasten the R-stage gear with the second actuator provided so that it can be fastened.

The control unit senses the range position of the shift lever to distinguish the driver's parking allowance (S10). If the position of the shift lever is in the P range, it is necessary to maintain the stop state of the vehicle. Interlock control of the transmission can be achieved by tightening the gears to the same output shaft or the input shaft through the first actuator and the second actuator, respectively . Thus, the rotation of the transmission output shaft or the input shaft is stopped, and rotation of the wheel can be prevented.

Here, the first actuator is an actuator that only engages one of the even-numbered gears except the R-stage gear, and the R-stage gear is fastened to the same shaft with the even-numbered gears.

In addition, the second actuator can engage the R gear when the shift lever is located in the P range. That is, when the shift lever is in the P range and the second actuator engages the even-numbered gear other than the R gear, when the shift lever is switched to the R range, the second actuator releases the engaged gear, It must operate to tighten. This causes the second actuator to unnecessarily operate to generate noise. To prevent this, when the shift lever is positioned in the P range, the R-stage gear may be previously tightened to the second actuator.

Therefore, when the shift lever is located in the P range, the control section can control the vehicle by parking the vehicle by engaging the first actuator with the even-numbered gear and the second actuator with the R-gear. Further, it is not necessary to apply parking devices such as a parking brake separately to the vehicle. This reduces the cost in manufacturing the vehicle and improves the design freedom of the shift lever, thereby improving the commerciality of the vehicle.

If the shift lever is in the R range as a result of the range sensing step S10, the controller waits until the cranking of the engine is performed, and then switches the first actuator to the neutral state. (S30).

2 is a view showing a parking control apparatus for a DCT vehicle according to an embodiment of the present invention. In particular, in the embodiment shown in Fig. 2, the first actuator 1 is provided so as to be able to engage the sixth gear, which is one of the even-numbered gears except the R gear. However, this is according to one embodiment, and may be provided so that even gears other than the sixth gear are engaged. In addition, in the embodiment of Fig. 2, the hole means actuator for controlling the shift fork of the hole means and the one-stage actuator for controlling the engagement of the first gear are separately included.

That is, when the driver shifts the shift lever to the R range for the backward travel, the stop state of the vehicle must be released so that the interlocking state of the output shaft is released by releasing the even- Can be released. At this time, the second actuator 2 is controlled to maintain the engaged state of the R gear so that the vehicle can perform the backward travel.

If it is determined that the shift lever is in the N range or the D range as a result of the range sensing step S10, a second parking release step of waiting until the cranking of the engine is performed and switching the second actuator to the neutral state (S40).

That is, when the driver operates the shift lever to the N or D range for traveling, the second actuator 3 releases the engagement of the R gear for the forward movement to switch to the neutral state. In addition, the speed change stage can be set so that the vehicle can be driven by engaging the first gear with a separate actuator capable of engaging the hole means gear.

In yet another embodiment, in the parking control step (S20), the controller may select one of the even-numbered gears other than the R-stage gear and the hole means gears as the first actuator And the R gear can be engaged with the second actuator provided so as to be able to engage the remaining R / G gears with the R gear.

That is, the first actuator is provided so as to be capable of selecting any one of the pair of gears except the R gear and the hole means gears, You can reduce the number of applications and save money. However, also in this case, the first actuator can be controlled to engage the even-numbered gear in the case that the shift lever is the P range.

3 is a diagram illustrating a parking control apparatus for a DCT vehicle according to an embodiment of the present invention. In particular, in the embodiment shown in FIG. 3, the first actuator 1 is shown to be capable of engaging a sixth gear, which is one of the even gears except the R gear, and a first gear, which is one of the hole means gears. However, this is only for the sake of understanding one embodiment, and the specific gear stage setting may vary depending on the designer or the vehicle. In the embodiment of FIG. 3, a Hall-effect actuator for controlling a shift fork of the Hall means is separately provided.

In this case, the first actuator 1 may be provided so as to be able to engage the first gear of the hole means gears. As a result of the range sensing step S10, if the position of the shift lever is R range , It is possible to wait until the cranking of the engine is performed and then perform the first parking release step S30 for switching the first actuator 1 to the neutral state or engaging the first actuator 1 in the first gear.

That is, the first actuator 1 is provided to selectively engage either the first gear or the even gear, so that when the driver manipulates the shift lever to the R range, In addition to interlock release by releasing the means gear engagement and engaging the first gear, it is possible to prepare for N or D range switching of the shift lever for driving the vehicle. Of course, it is also possible to perform control such that the first actuator is simply engaged with the first gear without releasing the even gear to maintain the neutral state.

If it is determined that the shift lever is in the N range or the D range as a result of the range detection step S10, the first gear is engaged with the first actuator, A second parking release step S40 for switching the actuator to the neutral state may be performed.

That is, when the driver operates the shift lever to the N or D range to drive the vehicle, the first actuator 1 is engaged with the first gear for forward movement and the second actuator 3 is engaged with the R gear It is possible to prepare for running of the vehicle.

FIG. 4 is a table showing engagement of gears according to a parking control method of a DCT vehicle according to an embodiment of the present invention. Referring to FIG. Here, the first actuator is characterized in that it can be fastened to the first gear and the sixth gear, but this should not be limited to the gear stages shown in the drawings.

If the controller detects that the parallel parking switch is turned on after the parking control step S20, the control unit may release all of the plurality of gear stages coupled to the same shaft or exclude one of the plurality of gear stages And can be controlled to be released.

A parallel parking switch may be additionally provided in the interior of the vehicle so that the driver can operate the vehicle. If the driver turns on the parallel parking switch, the control unit may determine that the shift lever is in the P range, It is possible to control the gears to be engaged or to release all of the gears fixed on the same shaft. According to this configuration, when the vehicle is parked in parallel, the vehicle can be moved by an external force, so that the inconvenience caused by parking can be solved.

For the sake of clarity, the control unit is a transmission control unit (TCU), and the control unit can detect the position of the shift barrel through the inhibitor switch in the shift lever.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

S10: Range detection step
S20: parking control step
S30: First parking releasing step
S40: Second Parking Release Phase

Claims

A range sensing step of the control unit sensing a range position of the shift lever;
And a controller controlling the plurality of gears on the same shaft of the transmission as a result of performing the range sensing step when the position of the shift lever is P range,
In the parking control step, the controller may select one of the even-numbered gears other than the R-stage gear and the one of the odd-numbered gears and engage the even-numbered gear with the first actuator provided so as to be able to be engaged, And the R-stage gear is fastened by a second actuator provided so as to be able to fasten the gears and the R-stage gear.

delete

The method according to claim 1,
Wherein the first actuator is capable of engaging the first gear of the hole means gears.

The method of claim 7,
Wherein when the position of the shift lever is in the R range as a result of the range sensing step, the controller waits until the cranking of the engine is performed and then switches the first actuator to the neutral state or tightens the first actuator in the first gear. A parking control method.

The method of claim 7,
If the shift lever is in the N range or the D range as a result of the range sensing step, the engine is stopped until cranking is performed, and the first actuator is engaged with the first gear, Wherein the switching of the DCT vehicle is controlled by the control means.

The method according to claim 1,
After the parking control step, when the controller detects that the parallel parking switch is turned ON, the controller releases all of the plurality of gear stages locked on the same shaft or releases all of the plurality of gear stages except for the plurality of gear stages Wherein the DCT vehicle is a vehicle.