KR101918355B1 - 하이브리드 차량의 기어 체결방법 - Google Patents

하이브리드 차량의 기어 체결방법 Download PDF

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KR101918355B1
KR101918355B1 KR1020160137803A KR20160137803A KR101918355B1 KR 101918355 B1 KR101918355 B1 KR 101918355B1 KR 1020160137803 A KR1020160137803 A KR 1020160137803A KR 20160137803 A KR20160137803 A KR 20160137803A KR 101918355 B1 KR101918355 B1 KR 101918355B1
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South Korea
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gear
controller
vehicle
target
term
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KR1020160137803A
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KR20180044117A (ko
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이종호
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현대자동차주식회사
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Priority to KR1020160137803A priority Critical patent/KR101918355B1/ko
Priority to US15/374,861 priority patent/US9816608B1/en
Publication of KR20180044117A publication Critical patent/KR20180044117A/ko
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    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
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    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
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    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
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    • 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
    • B60W10/11—Stepped gearings
    • B60W10/113—Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
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    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18054—Propelling the vehicle related to particular drive situations at stand still, e.g. engine in idling state
    • 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
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    • F16H59/68—Inputs being a function of gearing status
    • 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
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F16H2061/1224—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0052—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising six forward speeds
    • 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
    • F16H2306/00—Shifting
    • F16H2306/40—Shifting activities
    • F16H2306/50—Coupling of new gear
    • 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
    • F16H2312/00—Driving activities
    • F16H2312/02—Driving off
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
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    • Y10S903/914—Actuated, e.g. engaged or disengaged by electrical, hydraulic or mechanical means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/915—Specific drive or transmission adapted for hev
    • Y10S903/917—Specific drive or transmission adapted for hev with transmission for changing gear ratio
    • Y10S903/919—Stepped shift
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/945—Characterized by control of gearing, e.g. control of transmission ratio

Abstract

본 발명에 따른 하이브리드 차량의 기어 체결방법은 컨트롤러가 동기장치를 통해 목표단기어의 체결을 시도할 시 보킹(Baulking) 현상이 발생하는지 감지하는 단계; 상기 감지단계 수행결과, 보킹현상을 감지한 경우, 상기 컨트롤러가 차량의 정차상태를 확인하는 단계; 상기 확인단계 수행결과, 차량이 정차 중인 경우, 상기 컨트롤러가 동기장치를 통해 목표단기어와 동일한 입력축을 공유하는 타단기어를 체결하는 단계; 및 상기 체결단계 이후, 상기 컨트롤러가 동기장치를 통해 타단기어를 해제한 다음 상기 목표단기어의 체결을 재시도하는 단계;를 포함할 수 있다.

Description

하이브리드 차량의 기어 체결방법 {METHOD FOR CONNECTNG GEAR OF HYBRID VEHICLE}
본 발명은 하이브리드 차량이 정차중인 상태에서 엔진 또는 모터를 구동하지 않으면서도 기어보킹 현상을 해소하는 방법에 관한 것이다.
일반적으로 변속기는 클러치와 추진축 사이에 설치되어 자동차의 주행상태 변화에 따른 엔진의 회전력을 증대시키거나 감소시키는 역할을 수행하게 된다.
수동 변속기(MT, Manual Transmission)는 각 단의 변속 시 변속 타이밍과 관련하여 기어 열 간의 보킹(Baulking) 현상이 발생한다. 이러한 보킹 현상은 운전자의 클러치조작과 변속조작시 서로 간의 타이밍이 맞지 않을 경우에 기어 열간의 튕김에 의하여 주로 발생된다.
종래에 엔진이 장착된 가솔린 차량의 경우, 차량이 주행중이거나 정차중이거나 상관없이 엔진의 아이들 회전속도에 의해서 클러치 액추에이터의 스트로크를 제어함으로서 상술한 기어보킹 현상을 해소할 수 있었다.
하지만, 최근 환경에 대한 관심이 급증하면서 엔진 및 모터의 동력으로 주행되는 하이브리드 차량의 개발이 활발해지고 있다.
그러나 자동화수동변속기 이를테면 DCT(Dual Clutch Transmission)가 적용된 하이브리드 차량의 경우, 정차상태에서 기어 보킹 현상이 발생하면, 엔진이 정지하고 있기 때문에 변속기 입력축 속도가 0이 된다. 따라서, 클러치 액추에이터의 스트로크를 제어하더라도 기어 정렬이 틀어지지 않는바 보킹현상이 해제되지 않는 문제점이 있었다.
상기의 배경기술로서 설명된 사항들은 본 발명의 배경에 대한 이해 증진을 위한 것일 뿐, 이 기술분야에서 통상의 지식을 가진자에게 이미 알려진 종래기술에 해당함을 인정하는 것으로 받아들여져서는 안 될 것이다.
KR 10-2016-0047178 A
본 발명은 이러한 문제점을 해결하기 위하여 제안된 것으로, 정차중인 하이브리드 차량에 기어보킹이 발생하더라도 엔진 또는 모터를 구동하지 않으면서 기어보킹현상을 해소하는 하이브리드 차량의 기어 체결방법을 제공하는데 그 목적이 있다.
상기의 목적을 달성하기 위한 본 발명에 따른 하이브리드 차량의 기어 체결방법은 컨트롤러가 동기장치를 통해 목표단기어의 체결을 시도할 시 보킹(Baulking) 현상이 발생하는지 감지하는 단계; 상기 감지단계 수행결과, 보킹현상을 감지한 경우, 상기 컨트롤러가 차량의 정차상태를 확인하는 단계; 상기 확인단계 수행결과, 차량이 정차 중인 경우, 상기 컨트롤러가 동기장치를 통해 목표단기어와 동일한 입력축을 공유하는 타단기어를 체결하는 단계; 및 상기 체결단계 이후, 상기 컨트롤러가 동기장치를 통해 타단기어를 해제한 다음 상기 목표단기어의 체결을 재시도하는 단계;를 포함할 수 있다.
상기 목표단기어는 변속레버의 레인지 위치에 따라 1단기어 또는 R단기어로 설정되는 것을 특징으로 할 수 있다.
상기 차량의 변속기가 DCT이고, 상기 목표단기어가 1단기어라면 상기 컨트롤러는 상기 타단기어를 1단기어를 제외한 홀수단기어로 설정하여 상기 체결단계를 실시하는 것을 특징으로 할 수 있다.
상기 차량의 변속기가 DCT이고, 상기 목표단기어가 R단기어라면 상기 컨트롤러는 상기 타단기어를 R단기어를 제외한 짝수단기어로 설정하여 상기 체결단계를 실시하는 것을 특징으로 할 수 있다.
상기 확인단계 수행결과, 차량이 주행 중인 경우, 상기 컨트롤러는 상기 재시도단계를 바로 수행하는 것을 특징으로 할 수 있다.
상술한 바와 같은 구조로 이루어진 하이브리드 차량의 기어 체결방법에 따르면 하이브리드 차량이 정차한 상태에서 기어보킹현상이 발생하더라도 엔진 또는 모터를 구동시키지 않으면서 기어보킹을 해소하는바, 엔진 또는 모터 구동에 의한 소음을 저감하여 NVH성능이 향상된다.
도 1은 본 발명의 일 실시예에 따른 하이브리드 차량의 파워트레인 구조를 도시한 도면,
도 2는 본 발명의 일 실시예에 따른 하이브리드 차량의 기어 체결방법을 도시한 순서도이다.
이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예에 따른 하이브리드 차량의 기어 체결방법에 대하여 살펴본다.
먼저, 하이브리드 차량의 파워트레인 구조를 살펴본다. 도 1은 본 발명의 일 실시예에 따른 하이브리드 차량의 파워트레인 구조를 도시한 도면이다. 도 1에 도시된 바와 같이 하이브리드 차량의 파워트레인은 TMED(Transmission Mounted Electric Device)방식으로서 엔진(E), 엔진클러치, 모터(M), 변속기, 차동장치 순으로 연결되도록 마련된다. 또한, 변속기는 복수의 클러치가 적용되어 변속 단절감이 발생하는 것을 방지하는 DCT(Dual Clutch Transmission)로 마련되어 컨트롤러에 의해 내부의 동기장치(S1,S2,S3,S4) 및 제1,2클러치(C1,C2)가 제어된다. 구체적인 각 구성들의 동작에 대하여는 후술하도록 하겠다.
도 2는 본 발명의 일 실시예에 따른 하이브리드 차량의 기어 체결방법을 도시한 순서도이다. 도 2를 참조하면, 하이브리드 차량의 기어 체결방법은 컨트롤러(CLR)가 동기장치를 통해 목표단기어의 체결을 시도할 시 보킹(Baulking) 현상이 발생하는지 감지하는 단계(S200); 상기 감지단계(S200) 수행결과, 보킹현상을 감지한 경우, 상기 컨트롤러(CLR)가 차량의 정차상태를 확인하는 단계(S210); 상기 확인단계(S210) 수행결과, 차량이 정차 중인 경우, 상기 컨트롤러(CLR)가 동기장치를 통해 목표단기어와 동일한 입력축을 공유하는 타단기어를 체결하는 단계(S220); 및 상기 체결단계(S220) 이후, 상기 컨트롤러(CLR)가 동기장치를 통해 타단기어를 해제한 다음 상기 목표단기어의 체결을 재시도하는 단계(S230);를 포함할 수 있다.
여기서, 보킹(Baulking) 현상은 기어 체결시도 시, 동기장치의 슬리브 치와 변속단기어의 클러치기어 치의 끝부분이 만나 원활한 체결이 이루어지지 않는 현상을 말한다.
즉, 컨트롤러(CLR)는 기어 액추에이터를 구동하여 차량의 변속을 시도하는데, 액추에이터 스트로크가 설정값 이상으로 상승하지 않으면, 기어 보킹 현상이 발생한 것으로 감지한다(S200).
만약, 기어 보킹 현상이 감지된 경우라면 하이브리드 차량이기 때문에 정차상태라면 엔진이 정지하고 있는바, 입력축이 회전하지 않아 지속적으로 목표단기어를 체결 시도하더라도 기어 보킹 현상이 발생할 것이다.
이에 본 기술은 차량의 정차상태를 확인하면(S210), 목표단기어와 동일한 입력축을 공유하는 타단기어를 체결하여 입력축을 미세하게 회전시킨 다음(S220), 목표기어단을 다시 체결 시도함으로써 기어 보킹 현상을 해소한다(S230).
구체적으로, 상기 목표단기어는 변속레버의 레인지 위치에 따라 1단기어 또는 R단기어로 설정될 수 있다.
즉, 차량이 정차상태일 경우에는 변속레버의 레인지 위치가 D레인지이면 전진주행을 위해 1단기어의 체결을 시도하고, 변속레버 위치가 R레인지이면 후진주행을 위해 R단기어의 체결을 시도하는 것이 바람직하다.
이때, 상기 차량의 변속기가 DCT이고, 상기 목표단기어가 1단기어라면 상기 컨트롤러(CLR)는 상기 타단기어를 1단기어를 제외한 홀수단기어로 설정하여 상기 체결단계를 실시할 수 있다.
즉, 도 1에 도시된 바와 같이 1단기어는 3단기어 및 5단기어와 동일한 입력축인 홀수단입력축(IS1)을 공유하도록 마련된다. 따라서, 컨트롤러(CLR)는 목표단기어가 1단기어로 설정된 경우에 동기장치(S1 또는 S3)를 이용하여 3단기어 또는 5단기어를 체결시킨다.
이와 같이 3단기어 또는 5단기어를 체결할 때, 동기장치의 슬리브 치와 3단기어 또는 5단기어의 클러치기어 치가 맞물리면서 미세하게 홀수단입력축(IS1)이 회전하게 되어, 다시 1단기어를 체결하면 보킹현상이 해소될 수 있는 것이다.
반대로, 상기 차량의 변속기가 DCT이고, 상기 목표단기어가 R단기어라면 상기 컨트롤러(CLR)는 상기 타단기어를 R단기어를 제외한 짝수단기어로 설정하여 상기 체결단계를 실시할 수 있다.
즉, R단기어는 2,4,6단기어와 함께 짝수단입력축(IS2)을 공유하도록 마련된다. 따라서, 컨트롤러(CLR)는 목표단기어가 R단기어로 설정될 경우, 동기장치(S2 또는 S4)를 이용하여 2단기어, 4단기어 또는 6단기어 중 하나를 체결하는 제어를 실시함으로 짝수단입력축(IS2)을 미세하게 회전시킨다. 이에 따라 R단기어 체결을 재시도할 경우 기어 보킹 현상이 발생하는 것을 해소할 수 있다.
하지만, 만약 차량의 변속기가 변속기어가 모두 단일의 입력축을 공유하도록 구성된 구조라면, 컨트롤러(CLR)는 목표단기어를 제외한 변속단기어들 중 하나를 체결한 후 목표단기어를 체결함으로써 기어 보킹 현상을 해소할 수 있다.
한편, 상기 확인단계(S210) 수행결과, 차량이 주행 중인 경우, 상기 컨트롤러(CLR)는 상기 재시도단계(S230)를 바로 수행할 수 있다.
이는 차량이 정차상태가 아니라면 엔진(E) 또는 모터(M)가 구동중이기 때문에 입력축이 회전할 것인바, 바로 목표단기어의 체결을 시도함으로써 기어 보킹 현상이 해소되는지 확인할 수 있다. 이에 따라 차량 출발 시 기어 보킹 해소에 따른 지연시간을 저감할 수 있다.
상술한 바와 같은 구조로 이루어진 하이브리드 차량의 기어 체결방법에 따르면 하이브리드 차량이 정차한 상태에서 기어보킹현상이 발생하더라도 엔진 또는 모터를 구동시키지 않으면서 기어보킹을 해소하는바, 엔진 또는 모터 구동에 의한 소음을 저감하여 NVH성능이 향상된다.
본 발명은 특정한 실시예에 관련하여 도시하고 설명하였지만, 이하의 특허청구범위에 의해 제공되는 본 발명의 기술적 사상을 벗어나지 않는 한도 내에서, 본 발명이 다양하게 개량 및 변화될 수 있다는 것은 당 업계에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.
E: 엔진 M: 모터
C1: 제1클러치 C2: 제2클러치
IS1: 홀수단입력축 IS2: 짝수단입력축
CLR: 컨트롤러
S1,S2,S3,S4: 동기장치
S200: 감지단계
S210: 확인단계
S220: 체결단계
S230: 재시도단계

Claims (5)

  1. 컨트롤러가 동기장치를 통해 목표단기어의 체결을 시도할 시 보킹(Baulking) 현상이 발생하는지 감지하는 단계;
    상기 감지단계 수행결과, 보킹현상을 감지한 경우, 상기 컨트롤러가 차량의 정차상태 및 엔진의 구동여부를 확인하는 단계;
    상기 확인단계 수행결과, 차량이 정차 중이고 엔진이 정지한 상태인 경우, 상기 컨트롤러가 동기장치를 통해 목표단기어와 동일한 입력축을 공유하는 타단기어를 체결하여 상기 입력축을 미세하게 회전시키는 단계; 및
    상기 체결단계 이후, 상기 컨트롤러가 동기장치를 통해 타단기어를 해제한 다음 상기 목표단기어의 체결을 재시도하여 상기 보킹현상을 해소하도록 제어하는 단계;를 포함하는 하이브리드 차량의 기어 체결방법.
  2. 청구항 1에 있어서,
    상기 목표단기어는 변속레버의 레인지 위치에 따라 1단기어 또는 R단기어로 설정되는 것을 특징으로 하는 하이브리드 차량의 기어 체결방법.
  3. 청구항 2에 있어서,
    상기 차량의 변속기가 DCT이고, 상기 목표단기어가 1단기어라면 상기 컨트롤러는 상기 타단기어를 1단기어를 제외한 홀수단기어로 설정하여 상기 체결단계를 실시하는 것을 특징으로 하는 하이브리드 차량의 기어 체결방법.
  4. 청구항 2에 있어서,
    상기 차량의 변속기가 DCT이고, 상기 목표단기어가 R단기어라면 상기 컨트롤러는 상기 타단기어를 R단기어를 제외한 짝수단기어로 설정하여 상기 체결단계를 실시하는 것을 특징으로 하는 하이브리드 차량의 기어 체결방법.
  5. 청구항 1에 있어서,
    상기 확인단계 수행결과, 차량이 주행 중인 경우, 상기 컨트롤러는 상기 재시도단계를 바로 수행하는 것을 특징으로 하는 하이브리드 차량의 기어 체결방법.

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