KR20110138863A - Control method and system for reducing gear-shift-shock of manual transmission - Google Patents

Control method and system for reducing gear-shift-shock of manual transmission Download PDF

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Publication number
KR20110138863A
KR20110138863A KR1020100059002A KR20100059002A KR20110138863A KR 20110138863 A KR20110138863 A KR 20110138863A KR 1020100059002 A KR1020100059002 A KR 1020100059002A KR 20100059002 A KR20100059002 A KR 20100059002A KR 20110138863 A KR20110138863 A KR 20110138863A
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South Korea
Prior art keywords
speed
engine
shift
gear
gear stage
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KR1020100059002A
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Korean (ko)
Inventor
김성재
이정기
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주식회사 케피코
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Priority to KR1020100059002A priority Critical patent/KR20110138863A/en
Publication of KR20110138863A publication Critical patent/KR20110138863A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/303—Speed sensors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The present invention relates to a control system and a control method for mitigating the shock of the manual transmission, and a control system and a control method for mitigating the shock of the manual transmission according to the present invention, the control method for detecting whether the shift by the clutch operation Clutch operation detection unit; If the clutch operation is detected, the gear stage detection unit for detecting the current gear stage; A vehicle speed detector configured to detect a current vehicle speed when a detection signal is outputted from the gear stage detector; An engine speed calculating unit configured to calculate a shift speed of an engine corresponding to a gear higher than a current gear by using a gear detection unit and a detection signal of a vehicle speed detection unit; And a shift speed controller configured to control the shift speed of the engine by using the engine speed of the upper gear stage calculated by the engine speed calculator.
According to the present invention, when gear shifting, the rotation speed corresponding to the first gear stage higher than the current gear stage is calculated in advance, and based on this, it is possible to quickly control the engine speed corresponding to the gear stage to shift, thereby reducing shift shock and It is effective to prevent torque reduction during shifting.

Description

CONTROL METHOD AND SYSTEM FOR REDUCING GEAR-SHIFT-SHOCK OF MANUAL TRANSMISSION}

The present invention relates to a control system and a control method for mitigating the shock of the manual transmission, and more particularly to a control system and a control method for mitigating the shock of the manual transmission to mitigate the shift shock during the shift of the manual transmission. It is about.

In general, a transmission is a device for changing the rotational speed or rotational force in a prime mover including a vehicle, and the like is divided into a manual transmission shifted manually and an automatic transmission shifted automatically.

In particular, the manual transmission is shifted to the vehicle by the driver lifts his / her foot off the accelerator pedal and raises or lowers the number of gears while the clutch pedal is pressed.

In this case, the engine idle state is maintained when the clutch pedal is pressed, so that the engine speed is controlled at 600 to 800 rpm when the engine is idle, or the fuel speed is adjusted to lower the engine speed.

However, after shifting through the manual transmission, the clutch pedal is released at the same time the engine pedal speed is relatively lowered while the shock is generated by the difference between the vehicle speed and gradually increases.

As a result, there are differences in driving tips and driving experiences such as properly adjusting the shift timing, but shift shock occurs at the shift stage of the manual transmission, and ultimately, the vehicle is shocked in the shifting process, Also, it is significantly lowered, so a solution is required.

The present invention has been made to solve the above problems, the object of which is to calculate in advance the number of revolutions corresponding to the gear stage of the first stage higher than the current gear stage when the gear shift, and based on this The present invention provides a control system and a control method for shift shock mitigation of a manual transmission that can be controlled quickly by the engine speed to prevent shift shock and reduce torque during shift.

In order to achieve the above object, the present invention, a clutch operation detecting unit for detecting whether the shift by the operation of the clutch pedal; If the operation of the clutch pedal is detected, the gear stage detection unit for detecting the current gear stage; A vehicle speed detector configured to detect a current vehicle speed when a detection signal is outputted from the gear stage detector; An engine speed calculating unit configured to calculate a shift speed of an engine corresponding to a gear higher than a current gear by using a gear detection unit and a detection signal of a vehicle speed detection unit; And a shift speed controller configured to control a shift speed of the engine by using the engine speed of the upper gear stage calculated by the engine speed calculation unit.

In addition, the engine speed calculation unit in the present invention is characterized by calculating the number of revolutions corresponding to the number of gear stages higher than the current gear stage.

In addition, the engine speed calculation unit according to the present invention is characterized in that the calculation further including the information on the longitudinal reduction ratio and the tire radius when calculating the engine speed.

The speed change control unit in the present invention is characterized in that the speed change speed of the engine is adjusted by at least one of the ignition timing, the air amount, and the fuel amount.

In addition, the first step of detecting whether the shift by the operation of the clutch pedal in the present invention; A second step of detecting a gear stage of the current engine when an operation of the clutch pedal is detected; A third step of detecting a current vehicle speed according to a detection signal for a gear stage of a current engine; A fourth step of calculating a speed of rotation of the engine corresponding to a gear higher than the current gear by the gear signal and the detection signal through the vehicle speed; And a fifth step of controlling a shift speed of the engine by using the calculated rotation speed of the engine.

In addition, the fourth step of the present invention is characterized in that the calculation of the number of revolutions corresponding to the number of gear stages higher than the current gear stage.

In addition, the fourth step of the present invention is characterized in that the calculation after the transmission speed of the engine further includes the information on the ratio of the deceleration ratio and tire radius is calculated and performed.

In addition, the fifth step of the present invention is characterized in that the speed of rotation of the engine is performed by adjusting at least one of the ignition timing, the air amount, and the fuel amount.

Such a control system for shift shock mitigation of the manual transmission of the present invention and the control method thereof, in advance in calculating the number of revolutions corresponding to the gear stage 1 step higher than the current gear stage when the gear shifting, based on the gear stage to shift It can be quickly controlled by the engine speed corresponding to the effect of reducing the shift shock and torque reduction during the shift.

1 is a block diagram schematically illustrating a control system for shift shock alleviation of a manual transmission according to an exemplary embodiment of the present invention.
2 is a flowchart illustrating a control method for shift shock relief of a manual transmission according to the present invention.
3 is a graph for explaining the result of the shift shock generated in the conventional control system.
4 is a graph for exemplarily illustrating a shift shock mitigation process by the control system of the present invention.

Hereinafter, with reference to the accompanying drawings, a control system and a control method for mitigating the shock of the manual transmission of the present invention will be described with reference to an embodiment as follows.

As shown in FIG. 1, the control system 100 for shift shock relief of a manual transmission according to an exemplary embodiment of the present invention includes a clutch operation detection unit 110, a gear stage detection unit 120, and a vehicle speed detection unit ( 130, an engine speed calculator 140, and a speed controller 150.

The clutch operation detection unit 110 is a clutch switch that detects whether a clutch (not shown) is operated to determine whether a shift is performed by an engine control unit (ECU) 200 through an output signal. When pressing down, the signal is transmitted to the gear stage detection unit 120.

After detecting the clutch operation signal by the clutch operation detection unit 110, the gear stage detection unit 120 detects the current gear stage of the engine 210 and transmits it to the engine speed calculation unit 140.

The vehicle speed detection unit 130 detects the current vehicle speed when the detection signal of the gear stage detection unit 120 is output, and measures the vehicle speed by using a vehicle speed sensor built in a speedometer (speed meter). At this time, the vehicle speed sensor is a sensor for measuring the driven shaft rotational speed of the transmission provided to transmit the driving force generated in the engine 210 to the axle in accordance with the driving state of the vehicle.

The engine speed calculating unit 140 corresponds to the gear stage one step higher than the current gear stage by using the detection signal of the current gear stage by the gear stage detecting unit 120 and the vehicle speed detected by the vehicle speed detecting unit 130. The speed of rotation of the engine 210 is calculated.

On the other hand, the engine speed calculation unit 140, in addition to the gear ratio and gear speed for each gear stage when calculating the speed of the engine 210, the engine speed to match the gear speed to be shifted by additionally using variables such as the gear ratio and tire radius. It is desirable to calculate the speed of rotation so as to control with.

At this time, the vehicle speed is proportional to the radius of the tire, and inversely proportional to the gear ratio and the longitudinal reduction ratio. You can see that.

Figure pat00001

The speed change control unit 150 controls the engine speed suitable for the gear speed to be shifted by using the engine speed of the first stage upper gear stage calculated by the engine speed calculation unit 140. Control of engine speed in accordance with the stage is carried out within a short time by adjusting the ignition timing, air volume and fuel volume.

Control method for shift shock relief of the manual transmission of the present invention, as shown in Figure 2 clutch operation step (S400), the engine gear stage detection step (S410), vehicle speed detection step (S420), the engine speed of rotation It includes a calculation step (S430) and the shift speed control step (S440) of the engine, the steps are repeatedly applied when the clutch pedal is operated.

Furthermore, in the present embodiment, the shift from the first stage to the second stage is illustrated, but not limited thereto, and the present invention may be applied to all the shifts from the second stage to the third stage or the third stage to the fourth stage or the fourth stage to the fifth stage. Do.

The clutch operation step S400 is a step of detecting whether the clutch is operated through the clutch operation detection unit 110 so as to determine the shift situation in the engine control apparatus 200 through the output signal. In this case, the operation detection unit 110 is applied to the clutch switch, etc., when the driver presses the clutch pedal for shifting, a signal corresponding thereto is transmitted to the gear stage detection unit 120.

The gear stage detection step S410 of the engine is a step of detecting the gear stage of the engine through the gear stage detection unit 120 when the clutch pedal operation is detected in the clutch manipulation step S400.

Vehicle speed detection step (S420) is a step of detecting the current vehicle speed by the vehicle speed detection unit 130 according to the detection signal for the gear stage of the current engine obtained when performing the gear stage detection step (S410) of the engine, In this case, the gear stage according to the vehicle speed may be preset.

Here, the vehicle speed detector 130 performing the current vehicle speed detection step S420 detects the current vehicle speed when the detection signal of the gear stage detector 120 is output, but the vehicle speed sensor built in the speedometer (speed meter). Measure the vehicle speed by using.

The shift speed calculation step S430 of the engine is one step higher than the current gear speed by a detection signal through the current gear speed in the gear stage detection step S410 of the engine and the current vehicle speed in the vehicle speed detection step S420. The shift speed of the engine 210 corresponding to the gear stage is calculated through the engine speed calculator 140.

In this case, in the shift speed calculation step S430 of the engine, in addition to the gear ratio and the gear speed for each gear stage when calculating the shift speed of the engine 210, the engine suits the gear speed to be shifted by additionally using information such as the ratio of the gear ratio and the tire radius. It is preferable to calculate the shift speed so as to control the speed.

In the shift speed control step (S440) of the engine, the shift speed control unit may be configured to convert the shift speed of the engine 210 using the rotation speed of the engine 210 calculated when the shift speed calculation step (S430) of the engine is performed. 150).

And the shift speed control step (S440) of the engine is controlled to the appropriate engine speed suitable for the number of gears to be shifted by using the engine speed of the first step gear stage calculated by the shift speed calculation step (S430) of the engine It's a step. At this time, the control of the engine speed corresponding to the gear stage to be shifted is carried out within a short time by adjusting the ignition timing, the air amount and the fuel amount.

As shown in FIG. 3, in the conventional graph, the clutch pedal is operated when the gear is shifted (for example, when the gear is shifted from the first gear to the second gear), and rpm1 is the engine when the gear gear is the first gear. The rotation speed is shown, rpm2 represents the engine speed when the gear stage is two gears at the sage vehicle speed, and rpm3 represents the engine speed when the engine speed is zero idle (gear stage gears). Here, referring to rpm1, rpm2 and rpm3, the engine speed in the order of the engine speed (rpm1) in the first gear, the engine speed in the second gear (rpm2), and the engine speed in rpm (rpm3) Lowers.

At this time, when the engine pedal speed (rpm1) in the first gear is the highest and the clutch pedal is operated for gear shifting (pressed), the engine speed (rpm3) until the idle state (zero gear state) is approximately 600 to 800 rpm. While rapidly decreasing to 600 ~ 800rpm is maintained for a predetermined time. At the same time as the foot is released from the clutch pedal, the engine speed, which is relatively lowered, gradually increases as the impact occurs due to the difference in the vehicle speed.

In order to solve this problem, in the graph of the present invention illustrated in FIG. 4, the clutch pedal is operated when the gear is shifted (for example, when the gear is shifted from the first gear to the second gear), and rpm4 is the current vehicle speed. The engine speed when the gear stage is one stage is shown, rpm5 represents the engine rotation speed when the gear stage is two stages in the sage vehicle speed, and rpm6 represents the engine rotation speed when idling (the gear stage is zero stage). Here, rpm4, rpm5, rpm6 also lower engine speed in order of the engine speed rpm4 in 1st gear, the engine speed rpm5 in 2nd gear, and the engine speed rpm6 in an idling state.

As a result, when the clutch operation detection unit 110 detects this by operating the clutch pedal, the current vehicle speed, the gear ratio for each gear, the longitudinal reduction ratio, and the tire radius are set by the vehicle speed detection unit 130 and the gear stage detection unit 120. The engine speed calculation unit 140 calculates the engine speed (rpm5) corresponding to the second stage and adjusts the ignition timing, the amount of air, and the amount of fuel in the fastest possible time, and the engine speed corresponds to the second stage. The number rpm 5 is controlled by the speed change controller 150.

In this way, since the engine speed when the clutch pedal is released is a two-speed engine speed (rpm5) with respect to the current vehicle speed, the shifting shock is eliminated, and there is no torque reduction phenomenon at the time of completion of shifting, which is also advantageous for a quick torque increase after the shifting. .

In the detailed description of the present invention described above with reference to the preferred embodiment of the present invention, the scope of protection of the present invention is not limited to the above embodiment, and those skilled in the art of the present invention It will be understood that various modifications and changes can be made in the present invention without departing from the spirit and scope of the invention.

110: clutch operation detection unit
120: gear stage detection unit
130: vehicle speed detection unit
140: engine speed calculation unit
150: shift speed control unit

Claims (8)

A clutch operation detecting unit detecting whether a shift is performed by an operation of the clutch pedal;
If the operation of the clutch pedal is detected, the gear stage detection unit for detecting the current gear stage;
A vehicle speed detector configured to detect a current vehicle speed when a detection signal is outputted from the gear stage detector;
An engine speed calculating unit configured to calculate a shift speed of an engine corresponding to a gear higher than a current gear by using a gear detection unit and a detection signal of a vehicle speed detection unit; And
And a shift speed controller configured to control the shift speed of the engine by using the engine speed of the upper gear stage calculated by the engine speed calculation unit. 2.
The method of claim 1,
The engine speed calculation unit controls the shift shock of the manual transmission, characterized in that for calculating the number of revolutions corresponding to the gear stage one step higher than the current gear.
The method of claim 1,
The engine speed calculating unit may further include information on the ratio of the reduction ratio and the tire radius when calculating the speed of the engine to calculate the speed of the engine.
The method of claim 1,
The shift speed control unit controls the shift speed of the engine by at least one of an ignition timing, an air amount, and a fuel amount.
A first step of detecting whether the shift by the operation of the clutch pedal;
A second step of detecting a gear stage of the current engine when an operation of the clutch pedal is detected;
A third step of detecting a current vehicle speed according to a detection signal for a gear stage of a current engine;
A fourth step of calculating a speed of rotation of the engine corresponding to a gear higher than the current gear by the gear signal and the detection signal through the vehicle speed; And
And a fifth step of controlling the shift speed of the engine by using the calculated rotation speed of the engine.
6. The method of claim 5,
The fourth step is a control method for shift shock alleviation of a manual transmission, characterized in that the calculation of the number of revolutions corresponding to the first gear stage higher than the current gear stage.
6. The method of claim 5,
The fourth step is performed after calculating the shift speed of the engine by further including information on the ratio of the reduction ratio and the tire radius, and controlling the shift shock of the manual transmission.
6. The method of claim 5,
In a fifth step, the shift speed of the engine is controlled by adjusting at least one of an ignition timing, an air amount, and a fuel amount.
KR1020100059002A 2010-06-22 2010-06-22 Control method and system for reducing gear-shift-shock of manual transmission KR20110138863A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140004963A (en) * 2012-07-03 2014-01-14 콘티넨탈 오토모티브 시스템 주식회사 Method for preventing drop of engine rotation at clutch engagement
CN109152102A (en) * 2018-10-25 2019-01-04 深圳众宝城贸易有限公司 Fish culture environment intelligent management system
KR20200069947A (en) * 2018-12-07 2020-06-17 현대오트론 주식회사 Clutch diagnostic system and method using vehicle speed
KR20220097769A (en) * 2020-12-31 2022-07-08 현대자동차주식회사 Vehicle shift shock reduction control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140004963A (en) * 2012-07-03 2014-01-14 콘티넨탈 오토모티브 시스템 주식회사 Method for preventing drop of engine rotation at clutch engagement
CN109152102A (en) * 2018-10-25 2019-01-04 深圳众宝城贸易有限公司 Fish culture environment intelligent management system
KR20200069947A (en) * 2018-12-07 2020-06-17 현대오트론 주식회사 Clutch diagnostic system and method using vehicle speed
KR20220097769A (en) * 2020-12-31 2022-07-08 현대자동차주식회사 Vehicle shift shock reduction control method

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