KR102062430B1 - Starting control device and method of vehicle according to recognition of out-of-synchronization - Google Patents

Abstract

The present invention relates to a vehicle oscillation control apparatus and method according to the synchronization mismatch determination, more specifically, APS when the current gear ratio is maintained lower than the specific gear ratio by determining the target stage and the specific gear ratio in the initial stage of vehicle start The present invention relates to a vehicle oscillation control apparatus and method according to synchronization mismatch determination to control a shock and oscillation delay by giving a shift command according to an operation range.

Description

Vehicle oscillation control apparatus and method according to synchronization mismatch determination {STARTING CONTROL DEVICE AND METHOD OF VEHICLE ACCORDING TO RECOGNITION OF OUT-OF-SYNCHRONIZATION}

The present invention relates to a vehicle oscillation control apparatus and method according to the synchronization mismatch determination, and more particularly, the current gear ratio is lower than the specific gear ratio and the APS (acceleration pedal sensor) is operated by determining the target number of gears and the specific gear ratio at the initial stage of vehicle oscillation. And it relates to a vehicle oscillation control apparatus and method according to the synchronization mismatch determination to control the shock and oscillation delay by giving a shift command according to the APS operating range when maintaining a constant time.

An automatic transmission for a vehicle is provided with a shift control device that automatically adjusts a transmission ratio according to a vehicle traveling speed and a load.

The shift control device performs a shift by controlling a plurality of clutches and brakes installed in the gear train in an activated or non-operated state to adjust the output rotation speed of the planetary gear device.

In the automatic transmission, a shift pattern is set to achieve the most suitable shift according to engine performance and driving conditions. The shift pattern is determined by comparing data of two throttle openings and two output shaft revolutions. The shift points are controlled by the TCU in a pattern determined in consideration of fuel economy and power performance in that situation.

Therefore, in the conventional invention, since the shift pattern is defined inside the TCU, the shift is made at a specific shift point. There was a problem that the oscillation impulse and shift delay occurs due to the synchronization mismatch due to abnormal operation because it is not made.

Korean Laid-Open Patent No.19970066207

The present invention has been made in order to solve the above problems, the vehicle is determined at the initial stage of the start of the target gear ratio and the specific gear ratio, the current gear ratio is lower than the specific gear ratio if the constant time to maintain the shift command according to the APS operating range An object of the present invention is to provide an apparatus and a method for controlling a vehicle oscillation according to a synchronization misalignment falling.

 In order to solve the above problems, the present invention determines the target number of gears and the specific gear ratio at the initial stage of vehicle start, and when the current gear ratio is kept lower than the specific gear ratio for a certain time, the shift command is lowered according to the APS operating range to reduce the shock and oscillation delay. To control.

 Determining the target number of gears and the specific gear ratio at the initial stage of vehicle start is determined if Gear Position> D2 gear, if Gear Hold is not Gear Hold, and if Gear Ratio ≤ D2 gear gear To judge.

 If the gear ratio is kept lower than the specific gear ratio for a certain time, the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio), Timer> T1.

The present invention includes a step of determining whether the device is in a gear hold state in a limp home mode; Determining whether the gear position is greater than the gear position D2 if it is not in a gear hold state; Continuously determining whether a gear ratio ≤ D2 gear ratio; If gear ratio ≤ D2 gear ratio, determining whether Timer> T1; When the power is on, the APS operates and maintains a constant time, thereby stably controlling shock and oscillation delays by giving a shift command according to the APS operating range.

 If the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio), go to the step of determining whether the gear hold (Gear Hold) state in the limp home mode (Limp Home Mode).

 If not, the method further comprises the step of determining whether the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio).

 The controlling of the shock and the oscillation delay stably includes: a shift command (single downshifting) when APS <Th1; APS < Th1 or shift command (two-stage SKIP downshift).

In the present invention made as described above, the shift is not made at the target shift stage, and thus the oscillation impulse and the shift delay may be solved due to synchronization mismatch due to abnormal operation.

In addition, the present invention determines the target number of gears and the specific gear ratio at the beginning of the vehicle oscillation, when the current gear ratio is lower than the specific gear ratio, the APS operates, and maintains a constant time to give a shift command according to the APS operating range to stably control the impact and the start delay can do.

1 is a flowchart illustrating determining a synchronization mismatch other than a shift point point on a shift pattern according to the related art.
2 is a graph showing a control format applied after the synchronization mismatch determination according to the present invention.
3 is a flowchart showing a control method according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

1 is a graph showing a synchronization mismatch other than shift point points on different shift patterns according to an up / down shift according to the related art.

2 is a diagram illustrating a control format applied after the synchronization mismatch determination according to the present invention.

The target gear stage and the specific gear ratio are judged at the initial stage of the vehicle starting, and when the current gear ratio is lower than the specific gear ratio for a certain time, the shift command is issued according to the APS operating range to stably control the shock and the start-up delay.

The determination of the target gear stage and the specific gear ratio at the initial stage of the vehicle start is performed when it is not in the gear hold state (Gear Hold), the gear position (Gear Position)> D2 stage, and the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio) Determine by judging.

When the gear ratio is kept lower than a specific gear ratio for a certain time, the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio), and refers to the case where Timer> T1.

When the power is on, the shift command is given to shift down according to the APS operating range, thereby stably controlling shock and oscillation delays.

Therefore, the present invention can quickly cope with a single shift shock and delay caused by the automatic transmission H / W characteristics in the logic controlled according to the shift pattern inside the TCU to avoid the shift shock and shift delay.

2 and 3 will be described in detail with respect to the vehicle start control method according to the synchronization mismatch determination for the implementation of the present invention.

First, (a) the limp home mode (Limp Home Mode) begins with the step of determining whether the gear (Gear Hold) state (S101).

(B) If it is not the gear hold (Gear Hold) state, it is determined whether the gear position (Gear Position)> D2 stage (S102).

(c) determining whether a gear ratio ≤ D2 gear ratio; If gear ratio ≤ D2 gear ratio, it is determined whether Timer> T1 (S103, S104).

(c-1) Gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio) If not in the limp home mode (Limp Home Mode) to go to the step of determining whether the gear hold (Gear Hold) state.

(d) When the power is on, different shift commands are issued according to the APS operating range to stably control shock and oscillation delays (S105 and S106).

(d-1) If it is not the power on, it returns without controlling the shock and the oscillation delay.

At this time, the step of stably controlling the shock and the oscillation delay, (d-2) if APS <Th1 shift command (single shift down step), (d-3) APS <Th1 or shift command (eg : Two-stage SKIP downshifting) (S107, S108). In detail, as shown in FIG. 2, if APS <Th1, the current gear is shifted down one step from the fourth gear to the third gear, and if APS <Th1, the gear is shifted down two steps from the current gear to the second gear.

Claims (15)

When the vehicle starts, if the gear position is larger than the specific gear stage, the gear ratio is not greater than the specific gear ratio, and the power is on, the shift command is transmitted to shift down according to the operation range of the accelerator pedal sensor. And control the oscillation delay,
When the gear ratio is lower than the specific gear ratio and the accelerator pedal sensor operates and maintains a constant time, the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio), Timer> constant time (T1), characterized in that Vehicle oscillation control method according to synchronization mismatch determination. The method of claim 1,
The specific gear stage is a vehicle oscillation control method according to the synchronization mismatch determination, characterized in that the D2. The method of claim 2,
The specific gear ratio is a vehicle start control method according to the synchronization mismatch determination, characterized in that the gear ratio (Gear Ratio) D2. delete The method of claim 1,
The controlling of the shock and the oscillation delay may include:
If APS (acceleration pedal sensor value) <Th1 (first value), the vehicle oscillation control method according to the synchronization mismatch determination, characterized in that the step of downshifting. The method of claim 1,
The controlling of the shock and the oscillation delay may include:
When the APS (acceleration pedal sensor value) <Th1 (the first value) is a step of downshifting the two-stage SKIP vehicle starting control method according to the synchronization mismatch determination, characterized in that. The method of claim 1,
When the vehicle is started, if it is determined that the lymph home mode (Limp Home Mode), the gear hold,
Vehicle oscillation control method according to the synchronization mismatch determination, characterized in that returned without controlling the shock and the oscillation delay. Determining whether it is a lymph home mode;
Determining whether the gear position (Gear Position)> D2 stage is not in the lymph home mode;
Determining whether a gear ratio ≤ D2 gear ratio;
If gear ratio ≤ D2 gear ratio, determining whether Timer> constant time T1;
When the power on (power on), the shift command so as to downshift according to the operating range of the accelerator pedal sensor to control the shock and the oscillation delay; vehicle starting control method according to the synchronization mismatch determination, characterized in that consisting of. The method of claim 8,
If the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio), the vehicle oscillation control method according to the synchronization mismatch determination, characterized in that to move to the step of determining whether the Lymph Home Mode (Limp Home Mode). The method of claim 8,
If not the step of determining whether the Timer> a predetermined time (T1), the vehicle oscillation control method according to the synchronization mismatch determination, characterized in that the shift to the gear ratio (Gear Ratio) ≤ D2 gear ratio (Gear Ratio). The method of claim 8,
If not the power on (power on), the vehicle oscillation control method according to the synchronization mismatch determination, characterized in that returned without controlling the shock and the oscillation delay. The method of claim 8,
The controlling of the shock and the oscillation delay may include:
If APS (acceleration pedal sensor value) <Th1 (first value), the vehicle oscillation control method according to the synchronization mismatch determination, characterized in that the step of downshifting. The method of claim 8,
The controlling of the shock and the oscillation delay may include:
When the APS (acceleration pedal sensor value) <Th1 (the first value) is a step of downshifting the two-stage SKIP vehicle starting control method according to the synchronization mismatch determination, characterized in that. The method of claim 8,
If it's judged as the Lymp Home Mode, you can do a gear hold,
Vehicle oscillation control method according to the synchronization mismatch determination, characterized in that returned without controlling the shock and the oscillation delay. A vehicle oscillation control transmission control unit (TCU) in which a vehicle oscillation control method according to any one of claims 1 to 3 and 5 to 14 is implemented.

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