KR20130066837A - Oil pump control system for vehicle - Google Patents

Oil pump control system for vehicle Download PDF

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Publication number
KR20130066837A
KR20130066837A KR1020110133541A KR20110133541A KR20130066837A KR 20130066837 A KR20130066837 A KR 20130066837A KR 1020110133541 A KR1020110133541 A KR 1020110133541A KR 20110133541 A KR20110133541 A KR 20110133541A KR 20130066837 A KR20130066837 A KR 20130066837A
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KR
South Korea
Prior art keywords
hydraulic pressure
oil pump
pressure value
vehicle
oil
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KR1020110133541A
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Korean (ko)
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정영록
Original Assignee
현대자동차주식회사
기아자동차주식회사
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Priority to KR1020110133541A priority Critical patent/KR20130066837A/en
Priority to US13/456,960 priority patent/US20130151113A1/en
Publication of KR20130066837A publication Critical patent/KR20130066837A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/18—Indicating or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/18—Indicating or safety devices
    • F01M1/20—Indicating or safety devices concerning lubricant pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0262—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 characterised by the signals used the signals being hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M2250/00—Measuring
    • F01M2250/62—Load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M2250/00—Measuring
    • F01M2250/64—Number of revolutions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: A system for controlling an oil pump for a vehicle is provided to actively control oil pressure at the outlet of the pump according to driving conditions and environmental changes for the vehicle. CONSTITUTION: A system for controlling an oil pump for a vehicle includes an oil pump (110), an oil pressure control valve (112), an oil pressure sensor (113), and a controller (130). The oil pump feeds oil to an engine. The oil pressure control valve controls oil pressure at the outlet of the pump. The oil pressure sensor detects and outputs the oil pressure at the outlet of the pump. The controller calculates the target oil pressure value of the outlet of the pump and then compares an oil pressure value measured from the oil pressure sensor with the calculated target oil pressure value in order to implement a feedback control for actuating the oil pressure control valve. [Reference numerals] (137) PI control module; (139) Engine fault warning module; (AA) RPM; (BB) Fuel quantity; (CC) Oil temperature; (DD) Cooling temperature

Description

차량용 오일펌프 제어시스템{Oil pump control system for vehicle}Oil pump control system for vehicle

본 발명은 차량용 오일펌프 제어시스템에 관한 것으로, 구체적으로는 오일펌프 토출부 유압을 제어하는 차량용 오일펌프 제어시스템에 관한 것이다.The present invention relates to a vehicle oil pump control system, and more particularly to a vehicle oil pump control system for controlling the oil pump discharge portion hydraulic pressure.

도 1의 종래 차량용 오일펌프 제어시스템의 블록도로서, 도 1에 도시된 바와 같이, 종래 차량용 오일펌프 제어시스템(1)은 크랭크축에 의해 구동되는 오일펌프(10)와 과도한 오일압력 상승시에 펌프 흡입구로 오일을 리턴하기 위한 릴리프밸브(20)를 구비하고 있다.As a block diagram of the conventional vehicle oil pump control system of FIG. 1, as shown in FIG. 1, the conventional vehicle oil pump control system 1 pumps an oil pump 10 driven by a crankshaft and an excessive oil pressure rise. A relief valve 20 for returning oil to the suction port is provided.

여기서 릴리프밸브(20)는 플런져(22) 상면에 가해지는 오일펌프 토출압이 플런져(22)를 지지하는 스프링(24)의 지지력보다 큰 경우 오일펌프(10)의 토출부의 오일을 오일펌프(24)의 흡입부로 재순환하도록 동작한다.Here, the relief valve 20 pumps the oil at the discharge portion of the oil pump 10 when the oil pump discharge pressure applied to the upper surface of the plunger 22 is greater than the supporting force of the spring 24 supporting the plunger 22. It is operated to recycle to the suction part of (24).

이와 같이 릴리프밸브(20)는 위와 같이 기계적 동작에 의해 개폐를 수행하기 때문에 엔진 운전 조건, 유온, 수온 등에 대응하여 오일펌프(10) 토출부의 유압을 능동적으로 제어하는 데는 한계를 가진다.Since the relief valve 20 is opened and closed by the mechanical operation as described above, there is a limit in actively controlling the oil pressure of the discharge portion of the oil pump 10 in response to the engine operating condition, oil temperature, water temperature, and the like.

이 때문에 종래 차량용 오일펌프 제어시스템(1)은 냉간 또는 고속 또는 저부하시 오일펌프(10)의 토출부에 불필요한 유압이 형성되는 경우에도 이를 적절히 관리하는 것이 어려운 문제를 가진다. 또한 이러한 문제는 오일펌프(10)의 부하를 증가시킴으로써 연비 상승의 원인이 되고 있다.For this reason, the conventional vehicle oil pump control system 1 has a problem that it is difficult to properly manage even when unnecessary hydraulic pressure is formed in the discharge portion of the oil pump 10 during cold, high speed or low load. In addition, this problem is causing the fuel consumption increase by increasing the load of the oil pump (10).

본 발명의 목적은 종래 기계식의 릴리프밸브를 전기적 제어가 가능한 형태로 변경함과 더불어 차량의 운전조건 및 환경변화에 대응하여 오일펌프 토출부 유압을 능동적으로 제어할 수 있는 차량용 오일펌프 제어시스템을 제공하는 것이다.An object of the present invention is to provide a vehicle oil pump control system that can actively control the oil pump discharge part hydraulic pressure in response to changes in the operating conditions and environmental conditions of the vehicle, as well as changing the conventional mechanical relief valve in a form capable of electrical control. It is.

상기 목적을 달성하기 위한 본 발명은 엔진에 오일을 공급하기 위한 차량용 오일펌프 제어시스템에 관한 것으로, 본 차량용 오일펌프 제어시스템은 엔진에 오일을 공급하기 위한 오일펌프; 상기 오일펌프의 토출부 유압을 제어하기 위한 유압제어밸브; 상기 오일펌프의 토출부 유압을 감지하여 출력하는 유압센서; 및 외부로부터 입력된 차량정보 중 엔진의 유압 및 운전상태와 관련된 정보에 대응하여 상기 오일펌프의 토출부의 목표유압값을 산출하고, 상기 산출된 목표유압값을 기준으로 상기 유압센서로부터 입력된 측정유압값을 비교하여 상기 유압제어밸브를 구동하기 위한 피드백제어를 수행하는 제어기;를 포함하는 것을 특징으로 한다.The present invention for achieving the above object relates to a vehicle oil pump control system for supplying oil to the engine, the oil pump control system for a vehicle includes an oil pump for supplying oil to the engine; A hydraulic control valve for controlling the hydraulic pressure of the discharge part of the oil pump; A hydraulic pressure sensor for sensing and outputting the hydraulic pressure of the discharge part of the oil pump; And calculating a target hydraulic pressure value of the discharge part of the oil pump in response to information related to the hydraulic pressure and the driving state of the engine among vehicle information input from the outside, and measuring hydraulic pressure input from the hydraulic sensor based on the calculated target hydraulic pressure value. And a controller configured to perform a feedback control for driving the hydraulic control valve by comparing the values.

상기 제어기는, 상기 차량정보 중 엔진회전수 및 연료량에 대응하여 사전에 정한 범위 내에서 설정된 제1 목표유압맵에 의해 상기 목표유압값을 산출하는 제1 제어모듈을 구비할 수 있다.The controller may include a first control module configured to calculate the target hydraulic pressure value based on a first target hydraulic pressure map set within a predetermined range corresponding to the engine speed and the fuel amount in the vehicle information.

상기 제1 목표유압맵에 의해 산출된 목표유압값은 상기 차량정보 중 오일온도 및 냉각수온에 의해 보정될 수 있다.The target hydraulic pressure value calculated by the first target hydraulic pressure map may be corrected by the oil temperature and the coolant temperature in the vehicle information.

상기 제어기는, 상기 오일펌프로부터 공급된 오일을 엔진의 피스톤에 공급하기 위한 피스톤실린더 쿨링 젯의 개방을 고려하여 상기 차량정보 중 엔진회전수 및 연료량에 대응하여 설정된 제2 목표유압맵에 의하여 상기 목표유압값을 산출하는 제2 제어모듈과, 상기 엔진회전수 및 연료량에 대응하여 상기 피스톤실린더 쿨링 젯을 제어하는 제3 제어모듈을 더 구비하고, 상기 피스톤실린더 쿨링 젯의 개방신호가 입력된 경우 상기 제1 제어모듈(132)을 비활성화하고 상기 제2 제어모듈 및 제3 제어모듈을 활성화할 수 있다.The controller may include the target by a second target hydraulic pressure map corresponding to the engine speed and the fuel amount in the vehicle information in consideration of opening of a piston cylinder cooling jet for supplying oil supplied from the oil pump to the piston of the engine. And a second control module for calculating a hydraulic pressure value, and a third control module for controlling the piston cylinder cooling jet in response to the engine speed and the fuel amount, and when the opening signal of the piston cylinder cooling jet is input, The first control module 132 may be deactivated and the second control module and the third control module may be activated.

상기 제어기는, 상기 목표유압값과 상기 측정유압값의 비교결과, 양자의 차이가 사전에 정해진 고장임계치에 도달된 경우 엔진고장으로 인식하고 이에 대응하는 경고신호를 외부로 출력하는 엔진고장 경고모듈을 더 구비할 수 있다.The controller may be configured to recognize an engine failure warning module that recognizes an engine failure and outputs a corresponding warning signal to the outside when a difference between the target hydraulic pressure value and the measured hydraulic pressure value reaches a predetermined failure threshold. It may be further provided.

상기 피드백제어는 비례적분(PI)제어 또는 비례적분미분(PID)제어에 의해 구현될 수 있다.The feedback control may be implemented by proportional integral (PI) control or proportional integral differential (PID) control.

이와 같이, 본 발명의 차량용 오일펌프 제어시스템은 차량정보 중 엔진의 유압과 운전상태와 관련된 정보에 대응하여 오일펌프의 토출부의 목표유압값을 산출하고 유압센서로부터 입력된 측정유압값을 이용하여 이 목표유압값에 추종되도록 피드백제어을 수행함으로써 냉간 또는 고속 또는 저부하시 오일펌프의 토출부에 불필요한 유압이 형성되는 것을 조절하여 오일펌프의 부하를 관리할 수 있으며, 이로 인해 오일펌프로 인한 연비 상승의 원인을 줄일 수 있다.As described above, the vehicle oil pump control system of the present invention calculates the target hydraulic pressure value of the discharge part of the oil pump in response to the information related to the hydraulic pressure and the driving state of the engine in the vehicle information and uses the measured hydraulic pressure value inputted from the hydraulic sensor. By performing feedback control to follow the target hydraulic pressure value, unnecessary oil pressure is formed in the discharge part of the oil pump during cold, high speed or low load, thereby controlling the load of the oil pump. The cause can be reduced.

또한 본 발명에 따른 차량용 오일펌프 제어시스템은 피스톤실린더 쿨링 젯의 영향을 고려하여 산출된 목표유압값에 의해 피드백제어를 수행할 수 있어 연비의 저감 효과를 더욱 극대화할 수 있다.In addition, the vehicle oil pump control system according to the present invention can perform the feedback control by the target hydraulic pressure value calculated in consideration of the influence of the piston cylinder cooling jet can further maximize the effect of reducing the fuel economy.

또한 본 발명에 따른 차량용 오일펌프 제어시스템은 엔진의 유압 편차를 감지함으로써 엔진 윤활계통의 치명적인 오류에 의한 고장을 신속하게 진단함으로써 엔진 고장을 사전에 방지할 수 있다.In addition, the oil pump control system for a vehicle according to the present invention can prevent the engine failure in advance by quickly diagnosing a failure due to a fatal error of the engine lubrication system by detecting the hydraulic deviation of the engine.

도 1은 종래 차량용 오일펌프 제어시스템의 블록도이다.
도 2는 본 발명의 일 실시예에 따른 차량용 오일펌프 제어시스템의 블록도이다.
도 3은 본 발명의 또 다른 일 실시예에 따른 차량용 오일펌프 제어시스템의 블록도이다.1 is a block diagram of a conventional vehicle oil pump control system.
2 is a block diagram of a vehicle oil pump control system according to an embodiment of the present invention.
3 is a block diagram of a vehicle oil pump control system according to another embodiment of the present invention.

이하 첨부된 도면들을 참조하여 본 발명의 일 실시예에 따른 차량용 오일펌프 제어시스템에 대하여 설명한다.Hereinafter, a vehicle oil pump control system according to an embodiment of the present invention will be described with reference to the accompanying drawings.

도 2를 참조하여 본 발명의 일 실시예에 따른 차량용 오일펌프 제어시스템(100)에 대하여 설명한다. 도 2은 본 발명의 일 실시예에 따른 차량용 오일펌프 제어시스템의 블록도이다.Referring to Figure 2 will be described for the vehicle oil pump control system 100 according to an embodiment of the present invention. 2 is a block diagram of a vehicle oil pump control system according to an embodiment of the present invention.

본 실시예에 따른 차량용 오일펌프 제어시스템(100)은, 오일펌프(110), 유압제어밸브(112), 유압센서(113), 제어기(130)로 이루어질 수 있다.The vehicle oil pump control system 100 according to the present embodiment may include an oil pump 110, a hydraulic control valve 112, a hydraulic sensor 113, and a controller 130.

오일펌프(110)는 흡입부(114)를 통해 오일팬(116)의 오일을 펌핑하여 토출부(118)로 토출한다. 오일펌프(110)는 엔진의 속도에 비례하여 구동된다. 토출부(118)를 통해 토출된 오일은 엔진의 내부로 공급된다.The oil pump 110 pumps oil from the oil pan 116 through the suction unit 114 and discharges the oil to the discharge unit 118. The oil pump 110 is driven in proportion to the speed of the engine. The oil discharged through the discharge part 118 is supplied into the engine.

유압제어밸브(112)는 토출부(118)의 유압을 제어하기 위한 밸브로서, 흡입부(114)와 토출부(118) 사이의 유로에 배치되며, 제어기(130)에 제어에 의해 구동되는 솔레노이드 밸브로 마련될 수 있다.The hydraulic control valve 112 is a valve for controlling the hydraulic pressure of the discharge unit 118, is disposed in the flow path between the suction unit 114 and the discharge unit 118, the solenoid driven by the control to the controller 130 It can be provided with a valve.

유압센서(113)는 오일펌프(130)의 토출부(118) 유압을 감지하여 제어기(130)로 출력한다. 이에 의해 유압센서(113)는 제어기(130)의 제어에 의한 실제 유압값을 제어기(130)로 공급할 수 있다.The hydraulic sensor 113 detects the hydraulic pressure of the discharge part 118 of the oil pump 130 and outputs it to the controller 130. As a result, the oil pressure sensor 113 may supply the actual oil pressure value by the control of the controller 130 to the controller 130.

제어기(130)는 차량에 배치된 각종 센서들로부터 입력된 차량정보 중 엔진의 유압과 운전상태와 관련된 정보에 대응하여 토출부(118)가 유지할 목표유압값을 산출하고 이 산출된 목표유압값을 기준으로 유압센서(113)로부터 입력된 측정유압값을 비교하여 이 기준 목표유압값을 추종하도록 유압제어밸브(112)를 구동하기 위한 피드백제어를 수행한다. 여기서 피드백제어는 비례적분(PI)제어 또는 비례적분미분(PID)제어 등에 의해 구현될 수 있다.The controller 130 calculates a target hydraulic pressure value to be maintained by the discharge unit 118 in response to information related to the hydraulic pressure and the driving state of the engine among the vehicle information input from various sensors arranged in the vehicle, and calculates the calculated target hydraulic pressure value. By comparing the measured hydraulic pressure value input from the hydraulic sensor 113 as a reference, feedback control for driving the hydraulic control valve 112 is performed to follow the reference target hydraulic value. The feedback control may be implemented by a proportional integral (PI) control or a proportional integral differential (PID) control.

도 2에 도시된 바와 같이, 제어기(130)는 목표유압값을 산출하기 위한 제1 제어모듈(132), 목표유압값을 추종하도록 비례적분(PI) 제어하는 PI제어모듈(137), 엔진고장 경고모듈(139)로 구분될 수 있다.As shown in FIG. 2, the controller 130 includes a first control module 132 for calculating a target hydraulic pressure value, a PI control module 137 for controlling a proportional integral (PI) to follow the target hydraulic pressure value, and an engine failure. Warning module 139 may be divided.

제1 제어모듈(132)은 차량정보 중 엔진회전수 및 연료량에 대응하여 설정된 제1 목표유압맵(1322)에 의해 목표유압값을 산출할 수 있다. 여기서 제1 목표유압맵(1322)에 의해 산출된 목표유압값은 차량정보 중 오일온도 및 냉각수온에 의해 보정될 수 있다. 제1 목표유압맵(1322)은 엔진회전수 및 연료량에 대응한 목표유압값은 오일펌프(130)의 토출부(118) 유압이 과도하게 형성되지 않는 사전에 정해진 범위 내에서 설정된다.The first control module 132 may calculate the target hydraulic pressure value by the first target hydraulic pressure map 1322 set corresponding to the engine speed and the fuel amount in the vehicle information. The target hydraulic pressure value calculated by the first target hydraulic pressure map 1322 may be corrected by the oil temperature and the coolant temperature in the vehicle information. In the first target hydraulic pressure map 1322, the target hydraulic pressure value corresponding to the engine speed and the fuel amount is set within a predetermined range in which the hydraulic pressure of the discharge part 118 of the oil pump 130 is not excessively formed.

PI제어모듈(137)은 제1 제어모듈(132)에 의해 산출되고 보정된 목표유압값을 기준으로 유압센서(113)로부터 입력된 측정유압값을 비교하여 유압제어밸브를 구동하기 위한 비례적분(PI) 피드백제어를 수행함으로써 토출부(118)의 실제 유압을 제1 제어모듈(132)에 의한 목표유압값으로 추종할 수 있다. The PI control module 137 compares the measured hydraulic pressure value input from the hydraulic sensor 113 on the basis of the target hydraulic value calculated and corrected by the first control module 132 and performs a proportional integral for driving the hydraulic control valve ( By performing PI) feedback control, the actual hydraulic pressure of the discharge part 118 can be followed by the target hydraulic pressure value by the first control module 132.

이와 같이, 본 발명의 일 실시예에 따른 차량용 오일펌프 제어시스템(100)은 차량정보 중 엔진의 유압과 운전상태와 관련된 정보에 대응하여 오일펌프(130)의 토출부(118) 목표유압값을 산출하고 유압센서(113)로부터 입력된 측정유압값을 이용하여 이 목표유압값에 추종되도록 PI제어모듈(137)을 수행함으로써 냉간 또는 고속 또는 저부하시 오일펌프(130)의 토출부(118)에 불필요한 유압이 형성되는 것을 조절하여 오일펌프(130)의 부하를 관리할 수 있으며, 이로 인해 오일펌프(130)로 인한 연비 상승의 원인을 줄일 수 있다.As such, the vehicle oil pump control system 100 according to an exemplary embodiment of the present invention may set the target hydraulic pressure value of the discharge unit 118 of the oil pump 130 in response to information related to the hydraulic pressure and the driving state of the engine in the vehicle information. The discharge part 118 of the oil pump 130 during cold or high speed or low load by performing the PI control module 137 to calculate and follow the target hydraulic pressure value using the measured hydraulic pressure value input from the hydraulic sensor 113. It is possible to manage the load of the oil pump 130 by adjusting that the unnecessary hydraulic pressure is formed, thereby reducing the cause of fuel consumption increase due to the oil pump 130.

또한 엔진고장 경고모듈(139)은 제1 제어모듈(132)에 의한 목표유압값과 유압센서(113)로부터 입력된 측정유압값의 비교결과, 양자의 차이가 사전에 정해진 고장임계치에 도달된 경우 엔진고장으로 인식하고 이에 대응하는 경고신호를 외부로 출력할 수 있다.In addition, when the engine failure warning module 139 compares the target hydraulic pressure value by the first control module 132 with the measured hydraulic pressure value input from the hydraulic sensor 113, the difference between both reaches a predetermined failure threshold. The engine may be recognized as a failure and a warning signal corresponding thereto may be output to the outside.

이와 같이 본 실시예에 따른 차량용 오일펌프 제어시스템(100)은 엔진의 유압 편차를 감지함으로써 엔진 윤활계통의 치명적인 오류에 의한 고장을 신속하게 진단함으로써 엔진 고장을 사전에 방지할 수 있다.As such, the vehicle oil pump control system 100 according to the present exemplary embodiment may prevent the engine failure in advance by quickly diagnosing a failure due to a fatal error of the engine lubrication system by detecting the hydraulic deviation of the engine.

이하에서는 도 3을 참조하여, 본 발명의 또 다른 일 실시예에 따른 차량용 오일펌프 제어시스템(200)에 대하여 설명한다. 도 3에 도시된 바와 같이 본 실시예에 따른 차량용 오일펌프 제어시스템(200)은 제어기(230)가 전술한 실시예와 달리 제1 제어모듈(232), PI제어모듈(237) 및 엔진고장 경고모듈(239) 외에도 제2 제어모듈(234), 제3 제어모듈(236)을 구비할 수 있다. 여기서 제1 제어모듈(232)과 제2 제어모듈(234)은 제어기(230)의 제어에 의해 선택적으로 동작된다.Hereinafter, a vehicle oil pump control system 200 according to another embodiment of the present invention will be described with reference to FIG. 3. As shown in FIG. 3, the vehicle oil pump control system 200 according to the present embodiment has a first control module 232, a PI control module 237, and an engine failure warning. In addition to the module 239, a second control module 234 and a third control module 236 may be provided. Here, the first control module 232 and the second control module 234 are selectively operated by the control of the controller 230.

즉 제어기(230)는 피스톤실린더 쿨링 젯(미도시)의 개방신호가 입력된 경우 상기 제1 제어모듈(232)을 비활성화하고 상기 제2 제어모듈(234) 및 제3 제어모듈(236)을 활성화하고 피스톤실린더 쿨링 젯 의 영향을 고려한 제2 밸브듀티맵(2342)에 의해 유압을 제어할 수 있다.That is, the controller 230 deactivates the first control module 232 and activates the second control module 234 and the third control module 236 when an open signal of a piston cylinder cooling jet (not shown) is input. And the hydraulic pressure can be controlled by the second valve duty map (2342) in consideration of the influence of the piston cylinder cooling jet.

제1 제어모듈(232)은, 피스톤실린더의 쿨링 젯의 개방신호가 입력되지 않은 경우 즉 피스톤실린더의 쿨링 젯이 폐쇄된 경우 피스톤실린더 쿨링 젯 의 영향을 고려한 제1 목표유압맵(2322)에 의해 토출부(218)의 목표유압값을 산출할 수 있다.When the opening signal of the cooling jet of the piston cylinder is not input, that is, when the cooling jet of the piston cylinder is closed, the first control module 232 is driven by the first target hydraulic pressure map 2322 considering the influence of the piston cylinder cooling jet. The target hydraulic pressure value of the discharge part 218 can be calculated.

여기서 제2 제어모듈(234)은 제2 목표유압맵(2342)에 의하여 목표유압값을 산출하여 PI제어모듈(237)로 출력할 수 있다. 제2 목표유압맵(2342)은 피스톤실린더 쿨링 젯의 개방을 고려하여 토출부(218) 목표유압값이 사전에 정해진 범위 내에서 산출되도록 차량정보 중 엔진회전수 및 연료량에 대응하여 설정된다. 여기서 피스톤실린더 쿨링 젯은 오일펌프(210)로부터 공급된 오일을 엔진의 피스톤에 공급한다.Here, the second control module 234 may calculate the target hydraulic value by the second target hydraulic map 2342 and output the calculated target hydraulic pressure to the PI control module 237. The second target hydraulic pressure map 2342 is set corresponding to the engine speed and the fuel amount in the vehicle information such that the target hydraulic pressure value of the discharge unit 218 is calculated within a predetermined range in consideration of the opening of the piston cylinder cooling jet. Here, the piston cylinder cooling jet supplies the oil supplied from the oil pump 210 to the piston of the engine.

또한 제2 제어모듈(234)는 차량정보 중 오일온도 및 냉각수온에 의해 제2 목표유압맵(2342)에 의해 생성된 제어신호를 보정할 수 있다.In addition, the second control module 234 may correct the control signal generated by the second target hydraulic pressure map 2342 by the oil temperature and the coolant temperature of the vehicle information.

PI제어모듈(237)은 제2 제어모듈(234)에 의해 산출되고 보정된 목표유압값을 기준으로 유압센서(213)로부터 입력된 측정유압값을 비교하여 유압제어밸브를 구동하기 위한 비례적분(PI) 피드백제어를 수행함으로써 토출부(218)의 실제 유압을 제1 제어모듈(232)에 의한 목표유압값으로 추종할 수 있다.The PI control module 237 compares the measured hydraulic pressure value input from the hydraulic sensor 213 based on the target hydraulic pressure value calculated and corrected by the second control module 234 to drive the hydraulic control valve ( By performing PI) feedback control, the actual hydraulic pressure of the discharge unit 218 can be followed by the target hydraulic pressure value by the first control module 232.

제3 제어모듈(236)은 차량정보 중 엔진회전수 및 연료량에 대응하여 피스톤실린더 쿨링 젯을 제어할 수 있다. 제3 제어모듈(236)은 차량정보 중 엔진회전수 및 연료량에 의해 피스톤실린더 쿨링 젯의 제어를 위한 제어신호값이 설정된 쿨링젯제어맵(2362)을 구비할 수 있다. 제3 제어모듈(236)은 쿨링젯제어맵(2362)에 의해 피스톤실린더 쿨링 젯을 제어할 수 있다.The third control module 236 may control the piston cylinder cooling jet in response to the engine speed and the fuel amount of the vehicle information. The third control module 236 may include a cooling jet control map 2362 in which control signal values for controlling the piston cylinder cooling jet are set according to the engine speed and the fuel amount in the vehicle information. The third control module 236 may control the piston cylinder cooling jet by the cooling jet control map 2362.

제어기(230)는 피스톤실린더 쿨링 젯의 개방신호가 입력된 경우 제1 제어모듈(232)을 비활성화하고, 제2 제어모듈(234) 및 제3 제어모듈(236)을 활성화할 수 있다.When the opening signal of the piston cylinder cooling jet is input, the controller 230 may deactivate the first control module 232 and activate the second control module 234 and the third control module 236.

이와 같이 본 실시예에 따른 차량용 오일펌프 제어시스템(200)은 피스톤실린터 쿨링 젯이 개방된 경우 이에 의한 오일펌프(210) 토출부(218)의 유압변화가 반영된 제2 제어모듈(234)을 통해 도 2에 도시된 실시예에 비해 보다 정확한 목표유압값을 산출할 수 있다.As such, the vehicle oil pump control system 200 according to the present exemplary embodiment may include the second control module 234 reflecting the hydraulic change of the discharge part 218 of the oil pump 210 when the piston cylinder cooling jet is opened. Through this, it is possible to calculate a more accurate target hydraulic value than the embodiment shown in FIG.

따라서 본 실시예에 따른 제어시스템(200)은 위와 같이 피스톤실린더 쿨링 젯의 영향을 고려하여 산출된 목표유압값에 의해 피드백제어를 수행할 수 있어 도 2의 실시예에 비해 연비의 저감 효과를 더욱 극대화할 수 있다.Therefore, the control system 200 according to the present embodiment can perform the feedback control by the target hydraulic value calculated in consideration of the influence of the piston cylinder cooling jet as described above, further reducing the fuel economy compared to the embodiment of FIG. It can be maximized.

100, 200: 차량용 오일펌프 제어시스템
110, 210: 전동식 워터펌프
112, 212: 유압제어밸브
114, 214: 흡입부
116, 216: 오일팬
118, 218: 토출부
130, 230: 제어기
132, 232: 제1 제어모듈
1322, 2322: 제1 밸브듀티맵
137, 237: PI제어모듈
139, 239: 엔진고장 경고모듈
234: 제2 제어모듈
2342: 제2 밸브듀티맵
236: 제3 제어모듈
2362: 쿨링젯제어맵100, 200: vehicle oil pump control system
110, 210: electric water pump
112, 212: Hydraulic control valve
114, 214: suction
116, 216: oil pan
118, 218: discharge part
130, 230: controller
132, 232: first control module
1322, 2322: first valve duty map
137, 237: PI control module
139, 239: engine failure warning module
234: second control module
2342: second valve duty map
236: third control module
2362: cooling jet control map

Claims (6)

차량용 오일펌프 제어시스템에 있어서,
엔진에 오일을 공급하기 위한 오일펌프;
상기 오일펌프의 토출부 유압을 제어하기 위한 유압제어밸브;
상기 오일펌프의 토출부 유압을 감지하여 출력하는 유압센서; 및
외부로부터 입력된 차량정보 중 엔진의 유압 및 운전상태와 관련된 정보에 대응하여 상기 오일펌프의 토출부의 목표유압값을 산출하고, 상기 산출된 목표유압값을 기준으로 상기 유압센서로부터 입력된 측정유압값을 비교하여 상기 유압제어밸브를 구동하기 위한 피드백제어를 수행하는 제어기;를
포함하는 것을 특징으로 하는 차량용 오일펌프 제어시스템.In the vehicle oil pump control system,
An oil pump for supplying oil to the engine;
A hydraulic control valve for controlling the hydraulic pressure of the discharge part of the oil pump;
A hydraulic pressure sensor for sensing and outputting hydraulic pressure of the discharge part of the oil pump; And
The target hydraulic pressure value of the discharge part of the oil pump is calculated in response to information related to the hydraulic pressure and the driving state of the engine among the vehicle information input from the outside, and the measured hydraulic pressure value input from the hydraulic sensor based on the calculated target hydraulic pressure value A controller for performing feedback control to drive the hydraulic control valve by comparing
Vehicle oil pump control system comprising a. 제1항에 있어서,
상기 제어기는, 상기 차량정보 중 엔진회전수 및 연료량에 대응하여 사전에 정한 범위 내에서 설정된 제1 목표유압맵에 의해 상기 목표유압값을 산출하는 제1 제어모듈을 구비하는 것을 특징으로 하는 차량용 오일펌프 제어시스템.The method of claim 1,
The controller may include a first control module configured to calculate the target hydraulic pressure value based on a first target hydraulic pressure map set within a predetermined range corresponding to the engine speed and the fuel amount in the vehicle information. Pump control system. 제2항에 있어서,
상기 제1 목표유압맵에 의해 산출된 목표유압값은 상기 차량정보 중 오일온도 및 냉각수온에 의해 보정되는 것을 특징으로 하는 차량용 오일펌프 제어시스템.The method of claim 2,
And a target hydraulic pressure value calculated by the first target hydraulic pressure map is corrected by an oil temperature and a cooling water temperature of the vehicle information. 제2항에 있어서,
상기 제어기는, 상기 오일펌프로부터 공급된 오일을 엔진의 피스톤에 공급하기 위한 피스톤실린더 쿨링 젯의 개방을 고려하여 상기 차량정보 중 엔진회전수 및 연료량에 대응하여 설정된 제2 목표유압맵에 의하여 상기 목표유압값을 산출하는 제2 제어모듈과, 상기 엔진회전수 및 연료량에 대응하여 상기 피스톤실린더 쿨링 젯을 제어하는 제3 제어모듈을 더 구비하고, 상기 피스톤실린더 쿨링 젯의 개방신호가 입력된 경우 상기 제1 제어모듈(132)을 비활성화하고 상기 제2 제어모듈 및 제3 제어모듈을 활성화하는 것을 특징으로 하는 차량용 오일펌프 제어시스템.The method of claim 2,
The controller may include the target by a second target hydraulic pressure map corresponding to the engine speed and the fuel amount in the vehicle information in consideration of opening of a piston cylinder cooling jet for supplying oil supplied from the oil pump to the piston of the engine. And a second control module for calculating a hydraulic pressure value, and a third control module for controlling the piston cylinder cooling jet in response to the engine speed and the fuel amount, and when the opening signal of the piston cylinder cooling jet is input, Vehicle oil pump control system, characterized in that to deactivate the first control module (132) and to activate the second control module and the third control module. 제1항에 있어서,
상기 제어기는, 상기 목표유압값과 상기 측정유압값의 비교결과, 양자의 차이가 사전에 정해진 고장임계치에 도달된 경우 엔진고장으로 인식하고 이에 대응하는 경고신호를 외부로 출력하는 엔진고장 경고모듈을 더 구비하는 것을 특징으로 하는 차량용 오일펌프 제어시스템.The method of claim 1,
The controller may be configured to recognize an engine failure warning module that recognizes an engine failure and outputs a corresponding warning signal to the outside when a difference between the target hydraulic pressure value and the measured hydraulic pressure value reaches a predetermined failure threshold. Vehicle oil pump control system characterized in that it further comprises. 제1항에 있어서,
상기 피드백제어는 비례적분(PI)제어 또는 비례적분미분(PID)제어에 의해 구현되는 것을 특징으로 하는 차량용 오일펌프 제어시스템.The method of claim 1,
The feedback control is a vehicle oil pump control system, characterized in that implemented by proportional integral (PI) control or proportional integral differential (PID) control.
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