KR100828766B1 - Method for preventing damage of dual mass flywheel in impact torque for vehicle - Google Patents

Method for preventing damage of dual mass flywheel in impact torque for vehicle Download PDF

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KR100828766B1
KR100828766B1 KR1020060118160A KR20060118160A KR100828766B1 KR 100828766 B1 KR100828766 B1 KR 100828766B1 KR 1020060118160 A KR1020060118160 A KR 1020060118160A KR 20060118160 A KR20060118160 A KR 20060118160A KR 100828766 B1 KR100828766 B1 KR 100828766B1
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vehicle
rpm
dmf
amount
torque
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권우열
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기아자동차주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

A method for preventing breakage of a DMF(Dual Mass Flywheel) in impact torque for a vehicle is provided to restrain the decrease of startability or the increase of particulate matter by the existing injection timing recognition method, by controlling the amount of idle fuel or torque. A method for preventing breakage of a DMF in impact torque for a vehicle comprises the steps of: detecting whether the change rate of input RPM(Revolution Per Minute) is over the reference change level or not, if difference between the input RPM and idle RPM is below 100 RPM, and then judging whether impact torque of the DMF is generated or not(S1,S2); judging whether acceleration opening degree is over reference opening degree or not, if the change rate of input RPM is over the reference change level(S3); controlling torque by operating the vehicle in a creeping mode while the vehicle is kept in an idle status, if acceleration opening degree is over reference opening degree(S4); judging whether a brake switch is turned on or not, if the acceleration opening degree is below reference opening degree(S6); and operating the vehicle in an idle fuel control mode if the brake switch is turned on(S7).

Description

자동차의 임팩트 토크시 듀얼 매스 플라이휠의 파손 방지 방법{METHOD FOR PREVENTING DAMAGE OF DUAL MASS FLYWHEEL IN IMPACT TORQUE FOR VEHICLE}How to prevent damage of dual mass flywheel during impact torque of car {METHOD FOR PREVENTING DAMAGE OF DUAL MASS FLYWHEEL IN IMPACT TORQUE FOR VEHICLE}

도 1은 본 발명에 따른 자동차의 임팩트 토크시 듀얼 매스 플라이휠(DMF)의 파손 방지 방법을 나타낸 도면이다. 1 is a view showing a method of preventing breakage of a dual mass flywheel (DMF) during impact torque of a vehicle according to the present invention.

본 발명은, 자동차의 임팩트 토크시 듀얼 매스 플라이휠(Dual Mass Flywheel, DMF)의 파손 방지 방법에 관한 것으로서, 보다 상세하게는, 임팩트 토크 전달시 연료량 및 토크량 제어를 이용하여 듀얼 매스 플라이휠의 파손을 방지할 수 있는 방법에 관한 것이다.The present invention relates to a method of preventing damage of a dual mass flywheel (DMF) during impact torque of an automobile, and more particularly, to prevent damage of a dual mass flywheel by using fuel amount and torque amount control during impact torque transmission. It is about the method which can prevent.

일반적으로 자동차에 대한 안락감, 정숙성 등에 대한 소비자들의 요구가 증대되고, 진동 소음에 대한 인식이 높아짐에 따라 고객 만족 측면에서 진동 소음 저감에 대한 연구가 활발히 진행되고 있다. 그러나, 자동차의 동력 성능 향상 및 연비 향상을 위한 경량화 추진, 엔진 고출력화 등의 연구 개발은 차량의 진동 소음 저감 측면에서 매우 불리하며, 이에 대한 대책이 강구되고 있다. 자동차 구동계의 진동 소음은 엔진에서 발생하는 불규칙한 토크 변동량이 구동계로 전달되어 자동차 전체를 진동시킴으로써 악영향을 주게 된다. 현재, 구동계의 진동 소음을 저감하는 방법으로서, 엔진에서 발생되는 토크 변동량이 구동계에 전달될 때 이를 최소화하기 위해 듀얼 매스 플라이휠(Dual Mass Flywheel, 이하 DMF 라고 칭함) 시스템을 적용하고 있다. In general, as consumers' demands for comfort and quietness for automobiles increase and awareness of vibration noise increases, studies on vibration noise reduction have been actively conducted in terms of customer satisfaction. However, research and development such as weight reduction promotion and high engine output for improving the power performance and fuel efficiency of automobiles are very disadvantageous in terms of reducing vibration noise of the vehicle, and measures for this have been taken. Vibration noise of the vehicle drive system is adversely affected by the irregular torque fluctuation generated in the engine is transmitted to the drive system to vibrate the entire vehicle. Currently, as a method of reducing vibration noise of a drive system, a dual mass flywheel (DMF) system is applied to minimize a torque variation generated in an engine when it is transmitted to the drive system.

일반적으로, DMF 임팩트 토크가 발생하는 조건은 클러치가 급미트시 피크 가속도가 발생함으로써 피크 임팩트 토크가 발생하는데, 자동차에서는 고단(3/4/5단)에서 브레이킹하여 시동을 끄는 경우나, 고단(3/4/5단)에서 브레이킹하여 알피엠(rpm)이 아이들 알피엠(rpm)이하로 떨어졌을 때 엑셀을 밟을 경우에 피크 임팩트 토크가 발생하여 DMF를 파손시킨다. In general, a condition in which DMF impact torque occurs is that a peak impact torque occurs due to a peak acceleration when the clutch is suddenly stopped.In a car, when the brake is turned off by breaking at a high stage (3/4/5 stage) or a high stage ( 3/4/5 stages), when the stepped on the accelerator when the ALMP (rpm) falls below the idle ALPM (rpm) by breaking the peak impact torque occurs to break the DMF.

이에, 임팩트 토크의 개선책으로서 종래에는 아이들 연료량(저 rpm 연료량) 제한 및 분사 타이밍 지각 방법을 이용하고 있으나, 이와 같은 분사 타이밍 지각방법은 시동성이 좋지 않고 입자성 물질이 증가하는 문제점이 있다. Accordingly, as an improvement of impact torque, conventionally, an idle fuel amount (low rpm fuel amount) limitation and injection timing perception method are used. However, such injection timing perception method has a problem of poor startability and an increase in particulate matter.

따라서, 본 발명의 목적은, 시동성이 좋으며 입자성 물질의 증가를 초래하지 않는 자동차의 임팩트 토크시 듀얼 매스 플라이휠의 파손을 방지할 수 있는 방법을 제공하는 것이다. Accordingly, it is an object of the present invention to provide a method capable of preventing breakage of a dual mass flywheel during impact torque of a motor vehicle which has good startability and does not cause an increase in particulate matter.

상기 목적은, 본 발명에 따라, 자동차의 임팩트 토크시 듀얼 매스 플라이휠의 파손 방지 방법에 있어서, (a) 입력 알피엠(rpm)과 아이들 알피엠(idle rpm)의 차이가 100 알피엠(rpm) 이하이면, Δt 동안 입력된 알피엠 변동량(Δrpm)이 기준 변동량 이상인지를 감지하여 듀얼 매스 플라이휠(Dual Mass Flywheel, DMF) 임팩트 토크 발생여부를 판단하는 단계와; (b) 상기 (a) 단계에서 Δt 동안 입력된 알피엠 변동량(Δrpm)이 기준 변동량 이상이면, 엑셀 개도량이 기준 개도량 이상인지 판단하는 단계와; (c) 상기 (b) 단계에서 엑셀 개도량이 기준 개도량 이상이면, 자동차가 아이들(idle) 상태를 유지하면서 크리핑(creeping) 주행모드로 운행함으로써 토크량을 제어하는 단계와; (d) 상기 (b) 단계에서 엑셀 개도량이 기준 개도량 미만이면, 브레이크 스위치가 온(on)인지 판단하는 단계와; (e) 상기 (d) 단계에서 상기 브레이크 스위치가 온(on)이면 아이들 연료량 제어모드로 운행하는 단계를 포함하는 단계에 의해 달성된다.The above object is, according to the present invention, in the method of preventing damage of the dual mass flywheel during impact torque of the vehicle, (a) if the difference between the input rpm (rpm) and the idle rpm (idm rpm) is less than 100 alpha (rpm), Determining whether the dual mass flywheel (DMF) impact torque is generated by detecting whether or not the input ALPM variation Δrpm during Δt is greater than or equal to the reference variation amount; (b) determining whether the Excel opening amount is greater than or equal to the reference opening amount, when the amount of ALPM (Δrpm) input during Δt in step (a) is greater than or equal to the reference variation amount; (c) controlling the torque amount by driving the vehicle in a creeping driving mode while maintaining the idle state if the Excel opening amount is greater than or equal to the reference opening amount in step (b); (d) determining whether the brake switch is on if the Excel opening amount is less than the reference opening amount in step (b); (e) if the brake switch is turned on in step (d), the step of driving to an idle fuel amount control mode.

여기서, 상기 (c) 단계에서 차량이 크리핑 주행모드로 운행된 다음, 일정 시간 후 또는 기어 변경시에 정상 주행모드로 운행되는 것이 바람직하다.Here, in the step (c), it is preferable that the vehicle is driven in the creeping driving mode, and then operated in the normal driving mode after a predetermined time or when the gear is changed.

상기 기준 변동량은 300 알피엠(rpm)인 것이 바람직하다. The reference fluctuation amount is preferably 300 alpha rpm.

이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 자동차의 임팩트 토크시 듀얼 매스 플라이휠(DMF)의 파손 방지 방법을 나타낸 도면이다. 1 is a view showing a method of preventing breakage of a dual mass flywheel (DMF) during impact torque of a vehicle according to the present invention.

본 발명에 따른 방법은 알피엠(rpm)의 거동을 이용하여 DMF(Dual Mass Flywheel)의 파손을 방지하기 위한 것으로서, 먼저 입력 알피엠(rpm)과 아이들 알피엠(idle rpm)의 차이가 100 rpm 이하이면(S1), Δt 동안 입력된 알피엠 변동량(Δrpm)이 기준 변동량 이상인지를 감지하여 듀얼 매스 플라이휠(Dual Mass Flywheel, DMF) 임팩트 토크 발생여부를 판단한다(S2). 즉, 클러치가 급미트시에는 피크 가속도에 의해 피크 임팩트 토크가 발생하는데, 이와 같이 피크 임팩트 토크가 발생하면 rpm의 거동이 비정상적으로 넓은 범위를 걸치게 된다. 여기서, 기준 변동량은 300 rpm으로 설정되어 있으나, 이에 한정되지 않고 시스템의 상황에 따라 달라질 수 있을 것이다. The method according to the present invention is to prevent the breakage of the dual mass flywheel (DMF) by using the behavior of arpm (rpm), first if the difference between the input rpm (idm) and the idle rpm (idle rpm) is less than 100 rpm ( S1), it is detected whether the amount of variation Δrpm input during Δt is greater than or equal to the reference variation and determines whether the dual mass flywheel (DMF) impact torque is generated (S2). That is, when the clutch suddenly drops, the peak impact torque is generated by the peak acceleration. When the peak impact torque is generated in this way, the behavior of the rpm is over a wide range. Here, the reference variation amount is set to 300 rpm, but is not limited thereto and may vary depending on the situation of the system.

상기 (S1) 단계에서 Δt 동안 입력된 알피엠 변동량(Δrpm)이 300 rpm 이상이면, 엑셀 개도량이 기준 개도량 이상인지 판단한다(S3). 즉, 엑셀 개도량에 따라 구동 토크가 결정되기 때문에 DMF의 충격량에 따른 값을 판단하기 위함이다. When the amount of variation Δrpm input during Δt in step S1 is 300 rpm or more, it is determined whether the opening amount of Excel is greater than or equal to the reference opening amount (S3). That is, since the driving torque is determined according to the Excel opening amount, it is to determine the value according to the impact amount of the DMF.

상기 (S3) 결과, 액셀 개도량이 기준 개도량 이상이면, 자동차가 아이들 상태를 유지하면서 크리핑(creeping) 주행 모드로 운행하게 된다(S4). 이와 같이, 시동을 끄지 않고 크리핑 상태로 주행하는 경우는 원행 로터리에서 5단 중행 중 전방 자동차가 속도를 줄일 경우 사용자는 브레이크를 밟아 rpm을 아이들 rpm 이하로 떨어뜨리게 되는데, 이와 같이 운행하는 이유는 도심에서 시동이 꺼지면 사고를 초래할 수 있기 때문에 시동을 끄지 않고 크리핑 주행을 가능하게 하는 것이다. 이 후, 일정 시간이 지나거나 또는 기어 변경시 정상 주행 모드로 운행하게 된다(S5). As a result of the above (S3), when the accelerator opening amount is equal to or greater than the reference opening amount, the vehicle is driven in the creeping driving mode while maintaining the idle state (S4). As such, when driving in a creeping state without turning off the engine, when the vehicle in front of the five-speed intermediate speed decreases in the roundabout, the user applies the brake to drop the rpm below the idle rpm. If the ignition is turned off, the creeping drive can be performed without turning off the ignition because it can cause an accident. Thereafter, when a predetermined time passes or the gear is changed, the vehicle is driven in the normal driving mode (S5).

한편, 상기 (S3) 결과 액셀 개도량이 기준 개도량 미만이면, 브레이크 스위치가 온(on)인지 판단한다(S6). 여기서, 액셀 개도량이 기준 개도량 미만이면서 브리에크 스위치가 온(on)일 때 시동이 꺼지게 되는데, 이 때 발생하는 임팩트 토크량은 상기 (S4) 단계와 같이 엑셀을 밟는 경우에 비해 작다. 따라서, 아이들 연료량을 서서히 줄여 시동을 끊음으로써 DMF 파손을 방지하고(S7), 사용자의 조작 실수로 잠깐동안 브레이크를 밟았다 떼는 경우 정상 주행 모드 조건으로 운행하여 로 직을 종료한다(S8).  On the other hand, if the result of the accelerator opening amount (S3) is less than the reference opening amount, it is determined whether the brake switch is on (S6). Here, the start is turned off when the accelerator opening amount is less than the reference opening amount and the breach switch is on, and the impact torque amount generated at this time is smaller than when the user presses the accelerator as in the step (S4). Therefore, by gradually reducing the idle fuel amount to stop the start to prevent damage to the DMF (S7), if the user presses the brake for a short time by mistake of operation of the user to operate in the normal driving mode conditions to end the logic (S8).

이러한 구성에 의하여, DMF 파손에 영향을 미치는 비정상적인 주행시(즉, 고단(3/4/5단)에서 브레이크를 밟는 경우 또는 고단(3/4/5)에서 브레이크를 밟은 후 다시 엑셀을 밟아 출발하고자 하는 경우) 아이들 연료량 또는 토크량을 조절함으로써 DMF 파손을 방지할 수 있다. 또한, 종래의 분사 타이밍 지각방법을 사용하지 않음으로써, 시동성이 저하되거나 입자성 물질이 증가하는 등의 문제가 해결될 수 있다. With this configuration, if you are driving abnormally (i.e., if you brake on the high stage (3/4/5 stage) or when you brake on the high stage (3/4/5), you can press the excel again to start) Can be prevented from damaging the DMF. In addition, by not using the conventional injection timing perception method, problems such as deterioration in startability or increase in particulate matter can be solved.

이상 설명한 바와 같이, 본 발명에 따르면, 아이들 연료량 또는 토크량을 조절함으로써 DMF 파손을 방지함으로써, 종래의 분사 타이밍 지각방법에 의해 시동성이 저하되거나 입자성 물질이 증가하는 것을 해결할 수 있는 자동차의 임팩트 토크시 DMF의 파손 방지 방법이 제공된다. As described above, according to the present invention, the impact torque of a vehicle which can solve the problem of deterioration of startability or increase of particulate matter by the conventional injection timing perception method by preventing DMF damage by adjusting the amount of idle fuel or torque. A method of preventing breakage of a DMF is provided.

Claims (3)

(a) 입력 알피엠(rpm)과 아이들 알피엠(idle rpm)의 차이가 100 알피엠(rpm) 이하이면, 입력된 알피엠 변동량(Δrpm)이 기준 변동량 이상인지를 감지하여 듀얼 매스 플라이휠(Dual Mass Flywheel, DMF) 임팩트 토크 발생여부를 판단하는 단계와;(a) If the difference between the input rpm and idle rpm is less than 100 rpm, the dual mass flywheel (DMF) is detected by detecting whether the input variation of the PM is greater than or equal to the reference variation. Determining whether impact torque is generated; (b) 상기 (a) 단계에서 상기 입력된 알피엠 변동량(Δrpm)이 기준 변동량 이상이면, 엑셀 개도량이 기준 개도량 이상인지 판단하는 단계와;(b) determining whether the Excel opening amount is greater than or equal to the reference opening amount when the input ALPM Δrpm is greater than or equal to the reference variation amount in step (a); (c) 상기 (b) 단계에서 엑셀 개도량이 기준 개도량 이상이면, 자동차가 아이들(idle) 상태를 유지하면서 크리핑(creeping) 주행모드로 운행함으로써 토크량을 제어하는 단계와;(c) controlling the torque amount by driving the vehicle in a creeping driving mode while maintaining the idle state if the Excel opening amount is greater than or equal to the reference opening amount in step (b); (d) 상기 (b) 단계에서 엑셀 개도량이 기준 개도량 미만이면, 브레이크 스위치가 온(on)인지 판단하는 단계와;(d) determining whether the brake switch is on if the Excel opening amount is less than the reference opening amount in step (b); (e) 상기 (d) 단계에서 상기 브레이크 스위치가 온(on)이면 아이들 연료량 제어모드로 운행하는 단계를 포함하는 단계를 포함하는 것을 특징으로 하는 자동차의 임팩트 토크시 DMF의 파손 방지 방법.and (e) operating in an idle fuel amount control mode if the brake switch is turned on in the step (d). 제1항에 있어서, The method of claim 1, 상기 (c) 단계에서 차량이 크리핑 주행모드로 운행된 다음, 일정 시간 후 또는 기어 변경시에 정상 주행모드로 운행되는 것을 특징으로 하는 자동차의 임팩트 토크시 DMF의 파손 방지 방법.In (c), the vehicle is driven in the creeping driving mode, and then after a predetermined time or when the gear changes, the damage prevention method of the DMF during the impact torque of the vehicle, characterized in that the operation. 제1항에 있어서, The method of claim 1, 상기 기준 변동량은 300 알피엠(rpm)인 것을 특징으로 하는 자동차의 임팩트 토크시 DMF의 파손 방지 방법.The reference fluctuation amount is 300 Alp (rpm) characterized in that the damage prevention method of the DMF when the impact torque of the vehicle.
KR1020060118160A 2006-11-28 2006-11-28 Method for preventing damage of dual mass flywheel in impact torque for vehicle KR100828766B1 (en)

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KR101786127B1 (en) 2012-12-12 2017-10-17 현대자동차주식회사 Method for preventing damage of dual mass fly wheel in vehicle

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US20040267432A1 (en) 2003-06-26 2004-12-30 Ford Global Technologies, Llc Diesel engine fuel control system
JP2005069206A (en) 2003-08-28 2005-03-17 Honda Motor Co Ltd Control device of internal combustion engine
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KR20060072553A (en) * 2004-12-23 2006-06-28 현대자동차주식회사 Controlling method for the idle governing

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US20040267432A1 (en) 2003-06-26 2004-12-30 Ford Global Technologies, Llc Diesel engine fuel control system
JP2005069206A (en) 2003-08-28 2005-03-17 Honda Motor Co Ltd Control device of internal combustion engine
JP2005117718A (en) 2003-10-03 2005-04-28 Nissan Motor Co Ltd Method and device for controlling torque of vehicle driven by motor
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101786127B1 (en) 2012-12-12 2017-10-17 현대자동차주식회사 Method for preventing damage of dual mass fly wheel in vehicle

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