KR100836387B1 - Control method for mild hybrid electric vehicle with Motor and Generator and Auto Stop and Go fails - Google Patents

Control method for mild hybrid electric vehicle with Motor and Generator and Auto Stop and Go fails Download PDF

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KR100836387B1
KR100836387B1 KR1020060119159A KR20060119159A KR100836387B1 KR 100836387 B1 KR100836387 B1 KR 100836387B1 KR 1020060119159 A KR1020060119159 A KR 1020060119159A KR 20060119159 A KR20060119159 A KR 20060119159A KR 100836387 B1 KR100836387 B1 KR 100836387B1
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asg
pulley
engine
failure
control method
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KR20080048772A (en
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송봉수
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현대자동차주식회사
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    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • 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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18018—Start-stop drive, e.g. in a traffic jam
    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/032—Fixing failures by repairing failed parts, e.g. loosening a sticking valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/0874—Two or more finally actuated members

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

본 발명은 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 관한 것으로서, 더욱 상세하게는 ASG 구동 핵심 부품인 MG 자체 및 벨트 파손으로 인하여 MG가 엔진을 구동하지 못하게 되는 경우를 개선하기 위해 ASG 없이 차량을 구동할 수 있도록 한 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 관한 것이다.The present invention relates to a control method of MG and ASG failure of a hybrid electric vehicle, and more particularly, in order to improve the case that the MG cannot drive the engine due to the damage of the MG itself and the belt, which are ASG driving core parts, the vehicle without the ASG. It relates to a control method in case of failure of the MG and ASG of a hybrid electric vehicle to drive the.

이를 위해, 본 발명은 MG 및 ASG의 고장을 인식하는 단계와; 상기 ASG를 삭제하고 비상모드로 전환하는 단계와; 상기 비상모드로 전환한 후 마그네틱 클러치를 연결하여 쿨링모터를 작동하는 단계와; 상기 쿨링모터와 엔진풀리를 연결하여 엔진을 시동하는 단계와; 상기 엔진 시동후 상기 마그네틱 클러치의 연결을 차단하여 ASG를 삭제한 채로 주행하는 단계;를 포함하여 이루어지는 것을 특징 으로 하는 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법을 제공한다.To this end, the present invention comprises the steps of recognizing the failure of the MG and ASG; Deleting the ASG and entering an emergency mode; Operating a cooling motor by connecting a magnetic clutch after switching to the emergency mode; Connecting the cooling motor and an engine pulley to start an engine; It provides a control method when the MG and ASG failure of a hybrid electric vehicle, characterized in that it comprises a; after the engine start the drive of the magnetic clutch is cut off to disconnect the ASG.

마일드 하이브리드 차량, MG, ASG, 쿨링모터, 마그네틱클러치 Mild hybrid vehicle, MG, ASG, cooling motor, magnetic clutch

Description

마일드 하이브리드 전기차량의 ＭＧ 및 ＡＳＧ 고장시 제어방법{Control method for mild hybrid electric vehicle with Motor and Generator and Auto Stop and Go fails}Control method for mild hybrid electric vehicle with Motor and Generator and Auto Stop and Go fails}

도 1은 본 발명에 따른 마일드 하이브리드의 기본 구성을 나타내는 장치구성도이고,1 is a device configuration diagram showing a basic configuration of a mild hybrid according to the present invention,

도 2는 본 발명에 따른 쿨링모터와 엔진풀리의 벨트 연결상태를 나타내는 사시도이고,2 is a perspective view illustrating a belt connection state between a cooling motor and an engine pulley according to the present invention;

도 3은 도 2의 평면도이고,3 is a plan view of FIG.

도 4는 본 발명에 따른 마그네틱 클러치의 구성을 나타내는 측단면도이고,Figure 4 is a side cross-sectional view showing the configuration of the magnetic clutch according to the present invention,

도 5는 본 발명에 따른 마일드 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법을 나타내는 순서도이다.5 is a flowchart illustrating a control method for failure of MG and ASG of a mild hybrid electric vehicle according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 쿨링모터 11 : 마그네틱 클러치10: cooling motor 11: magnetic clutch

12 : MG 13 : 벨트12: MG 13: Belt

14 : 엔진풀리 15 : 제1풀리14: engine pulley 15: first pulley

16 : 제2풀리 17 : 전자석16: second pulley 17: electromagnet

18 : 플레이트 스프링 19 : 워터펌프18: plate spring 19: water pump

20 : 텐셔너20: tensioner

본 발명은 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 관한 것으로서, 더욱 상세하게는 ASG 구동 핵심 부품인 MG 자체 및 벨트 파손으로 인하여 MG가 엔진을 구동하지 못하게 되는 경우를 개선하기 위해 ASG 없이 차량을 구동할 수 있도록 한 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 관한 것이다.The present invention relates to a control method of MG and ASG failure of a hybrid electric vehicle, and more particularly, in order to improve the case that the MG cannot drive the engine due to the damage of the MG itself and the belt, which are ASG driving core parts, the vehicle without the ASG. It relates to a control method in case of failure of the MG and ASG of a hybrid electric vehicle to drive the.

자동 스탑 앤 고(Automatic Stop & Go;이하ASG, Idle Stop & Go;ISG라고도 함) 장치는 연료저감장치의 일종으로서, 차량이 정차(IDLE)시 엔진을 끄고(STOP), 다시 출발할 경우(GO) 자동으로 엔진을 구동시키는 장치이다.Automatic Stop & Go (ASG, Idle Stop &Go; ISG) is a type of fuel saving device that stops the engine when the vehicle is idle and starts again ( GO) It is a device that automatically runs the engine.

예를들면 신호등 앞에 서게 될 때 자동으로 엔진이 꺼지게 되며 신호가 바뀌어 출발할 경우 가속페달을 밟으면 자동으로 시동이 걸리게 하는 장치이다.For example, when you stand in front of a traffic light, the engine will turn off automatically, and if the signal changes, the engine will start automatically when you press the accelerator pedal.

즉, 엔진이 꺼져 있는 동안 연료가 저감되고, 승용차보다는 상용차가, 고속도로보다는 시내주행에서 이점이 있다.That is, fuel is reduced while the engine is turned off, commercial vehicles rather than passenger cars, and city driving rather than highways are advantageous.

마일드 하이브리드의 기본 구성은 알터네이터와 스타트 모터의 기능을 하는 MG(MOTOR AND GENERATOR)를 기존의 알터네이터 자리에 장착하여, MG로 하여금 ASG(AUTO STOP AND GO) 기능 구현시 스타팅, 제너레이팅(GENERATING), 및 가혹 조 건시 어시스팅(ASSISTING) 등의 기능을 구현하는 구조로 되어 있어, 순수한 하드 타입의 하이브리드와는 차별되는 구조를 가지고 있다.The basic configuration of the Mild Hybrid is to mount the MG (MOTOR AND GENERATOR), which functions as an alternator and a starter motor, in place of the existing alternator, allowing the MG to start, generate, and operate the ASG (AUTO STOP AND GO) And a structure that implements functions such as assisting in harsh conditions, and has a structure that is different from a pure hard type hybrid.

또한, 쿨링모터는 자체내의 마그네틱 클러치를 이용하여 엔진의 가혹 조건시 클러치를 접합하여 구동 시스템의 냉각을 보조하는 역할 및 구동보조역할을 하며, 평상시 클러치의 단락과 함께 아이들 구동 만을 한다.In addition, the cooling motor uses a magnetic clutch in its own to join the clutch in the severe condition of the engine to assist cooling of the drive system and to act as a driving assistant, and to only idle drive with a short circuit of the clutch.

그러나, 종래의 마일드 하이브리드 전기차량에서 ASG 구동 핵심 부품인 MG 자체 및 벨트 파손으로 인해 MG가 엔진을 구동하지 못하여 주행성을 확보할 수 없고, 승객의 안전을 위협하는 요소가 된다.However, in the conventional mild hybrid electric vehicle, MG itself, which is a key component of the ASG drive, and the belt are damaged, which prevents the MG from driving the engine, thereby securing driving ability and threatening passenger safety.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, MG 및 ASG 고장을 인지하여 마그네틱 클러치를 상시 직결하는 방법을 통해 ASG를 삭제하고, 쿨링모터를 이용하여 주행성을 확보하고 나아가 승객의 안전성을 확보할 수 있도록 한 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법을 제공하는데 그 목적이 있다.The present invention has been made in view of the above, by recognizing the failure of the MG and ASG through the method of permanently connecting the magnetic clutch ASG is deleted, by using the cooling motor to secure the driving performance and further secure the passenger safety The purpose is to provide a control method in case of failure of MG and ASG of a hybrid electric vehicle.

상기한 목적을 달성하기 위한 본 발명은 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 있어서,In order to achieve the above object, the present invention provides a control method for MG and ASG failure of a hybrid electric vehicle,

MG 및 ASG의 고장을 인식하는 단계와; 상기 ASG를 삭제하고 비상모드로 전환하는 단계와; 상기 비상모드로 전환한 후 마그네틱 클러치를 연결하여 쿨링모터를 작동하는 단계와; 상기 쿨링모터와 엔진풀리를 연결하여 엔진을 시동하는 단계와; 상기 엔진 시동후 상기 마그네틱 클러치의 연결을 차단하여 ASG를 삭제한 채로 주행하는 단계;를 포함하여 이루어지는 것을 특징으로 한다.Recognizing a failure of the MG and the ASG; Deleting the ASG and entering an emergency mode; Operating a cooling motor by connecting a magnetic clutch after switching to the emergency mode; Connecting the cooling motor and an engine pulley to start an engine; And driving the engine while the ASG is deleted by cutting off the connection of the magnetic clutch after starting the engine.

바람직한 구현예로서, 상기 마그네틱 클러치는 일정한 갭을 두고 설치된 제1풀리 및 제2풀리와, 상기 제1풀리 및 제2풀리 사이에 설치되어 일정한 갭을 유지하는 플레이트 스프링과, 전류를 공급받아 발생된 전자력에 의해 상기 제1풀리과 제2풀리를 접합시켜주는 전자석을 포함하는 것을 특징으로 한다.In a preferred embodiment, the magnetic clutch has a first pulley and a second pulley provided with a constant gap, a plate spring installed between the first pulley and the second pulley to maintain a constant gap, and generated by receiving a current It characterized in that it comprises an electromagnet for bonding the first pulley and the second pulley by an electromagnetic force.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

전술한 바와 같이, 마일드 하이브리드의 기본 구성은 알터네이터와 스타트 모터의 기능을 하는 MG(12)를 기존 알터네이터 자리에 장착하여, MG(12)로 하여금 ASG 기능 구현시 스타팅, 제너레이팅 및 가혹 조건시 어시스팅 등의 기능을 구현한다.As described above, the basic configuration of the mild hybrid is to mount the MG 12, which functions as an alternator and a starter motor, in the existing alternator seat, which allows the MG 12 to assist in starting, generating and harsh conditions when implementing the ASG function. Implements functions such as sting.

또한, 쿨링모터(10)는 자체내의 마그네틱 클러치(11)를 이용하여 엔진의 가혹 조건시 클러치를 접합하여 구동전체 시스템의 냉각의 보조역할 및 구동 보조역할을 하며, 평상시 클러치의 단락과 함께 아이들 구동만을 한다.In addition, the cooling motor 10 uses the magnetic clutch 11 in its own to join the clutch in the severe conditions of the engine to serve as an auxiliary and a driving assist in the cooling of the entire system. Do it.

여기서, 본 발명은 MG(12) 자체 및 벨트(13)의 파손으로 인하여 MG(12)가 엔진을 구동하지 못하는 경우에 쿨링모터(10)를 이용하여 ASG 없이 차량을 구동할 수 있도록 한 점에 주안점이 있다.Here, in the present invention, when the MG 12 cannot drive the engine due to breakage of the MG 12 itself and the belt 13, the cooling motor 10 can be used to drive the vehicle without the ASG. There is a point.

도 1에 도시한 바와 같이 상기 MG(12)는 벨트(13)에 의해 엔진풀리(14)와 연 결되어 있고, 이때 ASG가 고장나면 MG(12) 자체 및 벨트(13)의 고장을 의심할 수 있다.As shown in FIG. 1, the MG 12 is connected to the engine pulley 14 by the belt 13. At this time, if the ASG fails, the MG 12 itself and the belt 13 may be suspected of failure. Can be.

상기 MG(12) 자체 및 벨트(13)의 고장을 인식하는 방법은 MG(12) 자체 센서에 의해 불능을 인식하거나 기타 상황에 의해 MG(12) 및 ASG가 불가할 경우에 운전자는 비상모드로 수동전환할 경우에 MCU(Motor Control Unit)가 고장상태를 인식한다.The method for recognizing the failure of the MG 12 itself and the belt 13 is to recognize the failure by the sensor MG 12 itself or when the MG 12 and the ASG is impossible due to other circumstances, the driver enters the emergency mode. In case of manual switching, MCU (Motor Control Unit) recognizes the fault condition.

이후 MCU는 ASG를 삭제하고(즉, ASG 모드를 배제하고) MG(12)는 아이들 상태가 되고, 마그네틱 클러치(11)를 연결하여 쿨링모터(10)를 구동한다.After that, the MCU deletes the ASG (ie, excluding the ASG mode), and the MG 12 enters an idle state and connects the magnetic clutch 11 to drive the cooling motor 10.

상기 마그네틱 클러치(11)는 일정한 갭을 두고 설치된 제1풀리(15) 및 제2풀리와, 상기 제1풀리(15)와 제2풀리(16) 사이에 설치된 플레이트 스프링과, 제1풀리(15) 및 제2풀리(16)를 전자력에 의해 접합시켜주는 전자석으로 구성되었다.The magnetic clutch 11 includes a first pulley 15 and a second pulley provided with a predetermined gap, a plate spring installed between the first pulley 15 and the second pulley 16, and a first pulley 15. ) And the second pulley 16 are composed of electromagnets which are bonded by an electromagnetic force.

상기 제1풀리(15) 및 제2풀리(16)는 플레이트 스프링(18)의 반발력에 의해 일정한 갭을 유지할 수 있고, 제1풀리(15)는 엔진풀리(14)와 항시 연결되어 있으며, 제2풀리(16)는 쿨링모터(10)에 의해 구동된다.The first pulley 15 and the second pulley 16 may maintain a constant gap by the repulsive force of the plate spring 18, the first pulley 15 is always connected to the engine pulley 14, The two pulleys 16 are driven by the cooling motor 10.

상기 쿨링모터(10)는 제1풀리(15) 및 제2풀리(16)가 접합함과 동시에 구동하게 되고, 결국 쿨링모터(10)의 구동에 의해 엔진풀리(14)가 구동되어 시동이 걸리게 된다.The cooling motor 10 is driven at the same time as the first pulley 15 and the second pulley 16 are bonded to each other, so that the engine pulley 14 is driven by the cooling motor 10 to be started. do.

즉, MCU가 MG(12) 및 ASG의 고장을 인식한 후 전자석(17)에 전류인가신호를 보내고, 제1풀리(15) 및 제2풀리(16)가 접합됨으로써, 쿨링모터(10)가 구동되어 엔진시동이 걸린다.That is, after the MCU recognizes the failure of the MG 12 and the ASG, it sends a current application signal to the electromagnet 17, and the first pulley 15 and the second pulley 16 are joined, whereby the cooling motor 10 Driven and engine starts.

마지막으로 엔진시동 후 쿨링모터(10)의 구동은 정지 가능하며, 전체적인 운전방식은 일반 A/T 차량과 동일하게 운전하며, 필요시 쿨링모터(10)는 엔진의 출력을 보조하는 역할 및 회생에너지 재생 역할을 수행한다.Finally, after the engine is started, the driving of the cooling motor 10 can be stopped, and the overall driving method is driven in the same manner as a general A / T vehicle. When necessary, the cooling motor 10 assists the output of the engine and regenerative energy. Play the role of regeneration.

이와 같은 제어방법에 의해, MG(12) 및 벨트(13)의 고장으로 인한 ASG 고장시 전동식 쿨링모터(10)를 구동하여 마그네틱 클러치(11)를 상시 직결하는 방법을 통해 ASG를 삭제하고 엔진을 구동할 수 있다.By such a control method, when the ASG failure due to the failure of the MG 12 and the belt 13, the ASG is removed and the engine is driven by driving the electric cooling motor 10 to directly connect the magnetic clutch 11 at all times. I can drive it.

이상에서는 본 발명을 특정의 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 이러한 실시예에 한정되지 않으며, 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 특허청구범위에서 청구하는 본 발명의 기술적 사상을 벗어나지 않는 범위내에서 실시할 수 있는 다양한 형태의 실시예들을 모두 포함한다.While the invention has been shown and described with respect to certain preferred embodiments thereof, the invention is not limited to these embodiments, and has been claimed by those of ordinary skill in the art to which the invention pertains. It includes all the various forms of embodiments that can be carried out without departing from the spirit.

이상에서 본 바와 같이, 본 발명에 따른 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 의하면, MG 및 벨트의 고장으로 인한 ASG 고장시 전동식 쿨링모터를 구동하여 마그네틱 클러치를 상시 직결하는 방법을 통해 ASG를 삭제하고 엔진을 구동함으로써, 주행성 확보 및 승객의 안전을 확보할 수 있다.As described above, according to the control method of the MG and ASG failure of the hybrid electric vehicle according to the present invention, ASG through the method of driving the electric cooling motor at all times by directly connecting the magnetic clutch when the ASG failure due to the failure of the MG and the belt By deleting the engine and driving the engine, it is possible to secure the driving performance and the safety of the passengers.

Claims (2)

하이브리드 전기차량의 MG 및 ASG 고장시 제어방법에 있어서,In the control method of MG and ASG failure of the hybrid electric vehicle, MG(12) 및 ASG의 고장을 인식하는 단계와;Recognizing a failure of the MG 12 and the ASG; 상기 ASG를 삭제하고 비상모드로 전환하는 단계와;Deleting the ASG and entering an emergency mode; 상기 비상모드로 전환한 후 마그네틱 클러치(11)를 연결하여 쿨링모터(10)를 작동하는 단계와;Operating the cooling motor 10 by connecting the magnetic clutch 11 after switching to the emergency mode; 상기 쿨링모터(10)와 엔진풀리(14)를 연결하여 엔진을 시동하는 단계와;Connecting the cooling motor 10 and the engine pulley 14 to start an engine; 상기 엔진 시동후 상기 마그네틱 클러치(11)의 연결을 차단하여 ASG를 삭제한 채로 주행하는 단계;Driving the engine while the ASG is deleted by cutting off the connection of the magnetic clutch 11 after starting the engine; 를 포함하여 이루어지는 것을 특징으로 하는 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법.Control method when the MG and ASG failure of the hybrid electric vehicle comprising a. 청구항 1에 있어서,The method according to claim 1, 상기 마그네틱 클러치(11)는 일정한 갭을 두고 설치된 제1풀리(15) 및 제2풀리(16)와, 상기 제1풀리(15) 및 제2풀리(16) 사이에 설치되어 일정한 갭을 유지하는 플레이트 스프링(18)과, 전류를 공급받아 발생된 전자력에 의해 상기 제1풀리(15)과 제2풀리(16)를 접합시켜주는 전자석(17)을 포함하는 것을 특징으로 하는 하이브리드 전기차량의 MG 및 ASG 고장시 제어방법.The magnetic clutch 11 is installed between the first pulley 15 and the second pulley 16 having a predetermined gap and the first pulley 15 and the second pulley 16 to maintain a constant gap. MG of a hybrid electric vehicle, comprising a plate spring 18 and an electromagnet 17 for joining the first pulley 15 and the second pulley 16 by an electromagnetic force generated by receiving electric current. And control method in case of ASG failure.
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