KR101163878B1 - Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle - Google Patents

Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle Download PDF

Info

Publication number
KR101163878B1
KR101163878B1 KR1020100039520A KR20100039520A KR101163878B1 KR 101163878 B1 KR101163878 B1 KR 101163878B1 KR 1020100039520 A KR1020100039520 A KR 1020100039520A KR 20100039520 A KR20100039520 A KR 20100039520A KR 101163878 B1 KR101163878 B1 KR 101163878B1
Authority
KR
South Korea
Prior art keywords
oil pump
line pressure
oil
pump
control
Prior art date
Application number
KR1020100039520A
Other languages
Korean (ko)
Other versions
KR20110120031A (en
Inventor
김종현
정상현
김연호
이재신
공승기
Original Assignee
기아자동차주식회사
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 기아자동차주식회사, 현대자동차주식회사 filed Critical 기아자동차주식회사
Priority to KR1020100039520A priority Critical patent/KR101163878B1/en
Publication of KR20110120031A publication Critical patent/KR20110120031A/en
Application granted granted Critical
Publication of KR101163878B1 publication Critical patent/KR101163878B1/en

Links

Images

Classifications

    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F16H2057/02047—Automatic transmissions

Abstract

본 발명은 하이브리드 차량에서 자동변속기오일인 ATF(Auto Transmission Fluid)유온이 ≥90℃이상이고, P(주차)나 N(중립)임과 더불어 엔진 쿨링팬 오프(Off)인 조건만족에 따른 치타음(Rattle Noise)의 발생이 예견될 때, TCU(10,Transmission Control Unit)가 레귤레이터밸브(5)를 제어해 오일펌프(7)로 이어진 밸브바디(2)내 펌프라인(3)쪽에 만들어진 라인압력≥10bar정도의 고압을 오일펌프(7)의 오일토출부(8)쪽에 형성함으로써, 내접기어타입의 외장형 전동식 A/T 오일펌프(7)에서 기어 떨림인 치타음(Rattle Noise)이 발생되는 특정 조건에서도 치타음을 크게 감소시키거나 또는 발생 가능성을 제거하는 특징을 구현한다.In the present invention, the ATF (Auto Transmission Fluid) oil temperature of the automatic transmission oil in a hybrid vehicle is greater than ≥90 ℃, P (parking) or N (neutral) and the cheetah sound according to the condition satisfying the engine cooling fan (Off) When the generation of (Rattle Noise) is foreseen, the line pressure created on the pump line (3) in the valve body (2) connected to the oil pump (7) by the TCU (Transmission Control Unit) controls the regulator valve (5). By forming a high pressure of ≥10 bar on the oil discharge part 8 side of the oil pump 7, the gear noise of the internal gear type external electric A / T oil pump 7 is generated. Under conditions, features that significantly reduce or eliminate the possibility of cheetahs are implemented.

Description

하이브리드 차량의 오일펌프 치타음 저감방법{Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle} Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle

본 발명은 하이브리드 차량에 관한 것으로, 특히 자동변속기의 밸브바디의 라인압제어로 오일펌프 치타음(Rattle Noise)을 저감하는 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid vehicle, and more particularly, to a method of reducing oil pump tooth noise by line pressure control of a valve body of an automatic transmission.

일반적으로 엔진클러치를 장착해 모터와 엔진을 분리하고 자동변속기를 이용한 하이브리드 시스템을 갖춘 차량에서는 EV(전기차)모드 출발이 가능하고, 엔진과 모터구동을 동시에 사용하는 HEV모드도 구현한다.In general, a vehicle equipped with an engine clutch to separate a motor from an engine and a hybrid system using an automatic transmission can start EV (electric vehicle) mode and implement a HEV mode using both an engine and a motor drive at the same time.

자동변속기 차량은 출발하기 위해 선행되어야 하는 유압공급을 위해 오일펌프를 갖추며, 오일펌프는 엔진에 연결한 일반적인 타입과, 자동변속기의 입력축과 모터로터에 연결되어 오일토출을 위해선 모터로터를 회전시켜야 하는 타입이 있다.The automatic transmission vehicle is equipped with an oil pump for supplying hydraulic pressure that must be preceded to start. The oil pump is connected to the engine of the general type, the input shaft of the automatic transmission, and the motor rotor to rotate the motor rotor for oil discharge. There is a type.

상기와 같이 자동변속기의 입력축에 연결한 오일펌프는 전동식 A/T오일펌프이며, 하이브리드 시스템에선 외장형 전동식 A/T오일펌프를 적용한다.As described above, the oil pump connected to the input shaft of the automatic transmission is an electric A / T oil pump. In a hybrid system, an external electric A / T oil pump is applied.

상기 외장형 전동식 A/T 오일펌프는 차량 정지시나 낮은 차속으로 펌프의 토출량 부족할 때나 또는 엔진이 구동상태이지만 엔진클러치 단락 되어 있을 때, 항시 작동되어 자동변속기의 유압공급장치인 밸브바디에 유량을 공급하도록 작동된다.The external electric A / T oil pump is operated at all times when the discharge amount of the pump is insufficient when the vehicle is stopped or at a low vehicle speed, or when the engine is driven but the engine clutch is short-circuited to supply the flow rate to the valve body, the hydraulic supply device of the automatic transmission. It works.

외장형 전동식 A/T 오일펌프는 내접기어타입의 외장형 전동식 A/T 오일펌프로 더 세분될 수 있으며, 이러한 내접기어타입은 자동변속기의 외부에 장착된 상태에서, N단 이나 P단 정차시 엔진이 정지(엔진 쿨링팬 오프)된 경우엔 매우 조용한 조건에서 작동하는 장점을 갖는다.The external electric A / T oil pump can be further subdivided into an external electric A / T oil pump of internal gear type. The internal gear type is mounted on the outside of the automatic transmission, and the engine is stopped when the N- or P-stage stops. When stopped (engine cooling fan off) it has the advantage of operating in very quiet conditions.

하지만, 상기와 같은 내접기어타입의 외장형 전동식 A/T 오일펌프는 기어 떨림인 치타음(Rattle Noise)이 자동변속기오일인 ATF(Auto Transmission Fluid)의 오일점도의 영향을 크게 받는다.However, the external electric A / T oil pump of the internal gear type as described above is greatly affected by the oil viscosity of the ATF (Auto Transmission Fluid), which is a gear shake, a tooth noise (Rattle Noise).

일례로, 상기 ATF의 유온이 90℃이상으로 올라가면 오일점도가 낮아져 기어 떨림인 치타음(Rattle Noise)이 발생되고, 이러한 치타음(Rattle Noise)은 공기를 타고 운전자에게 전달됨으로써 NVH 성능을 저하시키게 된다.For example, when the oil temperature of the ATF rises above 90 ° C., the oil viscosity is lowered, and thus, the rattling noise, which is a gear shake, is generated, and the rattling noise is transmitted to the driver in the air, thereby degrading NVH performance. do.

상기와 같은 치타음(Rattle Noise)의 생성을 억제하는 방법으론 A/T 오일펌프쪽 전장부하를 최소화하는 방식이 있다.As a method of suppressing the generation of the rattling noise, there is a method of minimizing the electric load on the A / T oil pump side.

이는, N단이나 P단 정지일 때, TCU(Transmission Control Unit)가 자동변속기 밸브바디의 오일펌프쪽 라인압력을 약 5bar 정도로 최저압 제어함으로써, 이러한 제어압을 생성하기 위한 외장형 A/T 오일펌프의 요구 토출유량 역시 작게하여 펌프구동 회전수(RPM)을 저속으로 구동하므로 펌프 내접기어의 치 접속횟수를 줄여 치타음(Rattle Noise) 및 A/T 오일펌프쪽 전장부하 역시 최소화시키는 방식이다.This is because when the N stage or P stage stops, the TCU (Transmission Control Unit) controls the oil pressure on the oil pump side of the automatic transmission valve body to a minimum pressure of about 5 bar, thereby creating an external A / T oil pump. Since the required discharge flow rate is also small, the pump driving speed (RPM) is driven at a low speed, thereby reducing the number of tooth connection of the pump internal gear, thereby minimizing the electric noise load on the side of the Rattle Noise and A / T oil pump.

하지만, 상기와 같이 A/T 오일펌프쪽 전장부하 최소화를 통해 치타음(Rattle Noise)의 생성을 억제하는 방식을 적용하면, 상기와 같은 특정 조건에서 특히 내접기어타입의 외장형 전동식 A/T 오일펌프에선 치타음(Rattle Noise)의 저감 효과가 크지 않다는 한계를 갖는다.
However, if the method of suppressing the generation of cheetah sound (Rattle Noise) by minimizing the electric load on the A / T oil pump side as described above, the external electric A / T oil pump of the internal gear type in particular under such specific conditions In this case, there is a limit that the effect of reducing the noise is not great.

이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 자동변속기오일인 ATF(Auto Transmission Fluid)의 유온이 90도 이상이고 특정한 변속단일 때 전동식 A/T 오일펌프쪽 토출압을 상승시켜줌으로써, 특히 내접기어타입의 외장형 전동식 A/T 오일펌프가 구동할 때 내접기어의 떨림을 작게하여 치타음(Rattle Noise)을 크게 저감할 수 있는 하이브리드 차량의 오일펌프 치타음 저감방법을 제공함에 그 목적이 있다.
Accordingly, the present invention has been invented in view of the above, by increasing the discharge pressure of the electric A / T oil pump side when the oil temperature of the automatic transmission oil ATF (Auto Transmission Fluid) is 90 degrees or more and at a specific shift stage, In particular, when the external electric A / T oil pump of internal gear type is driven, the purpose of the present invention is to provide a method for reducing the oil pump cheetah sound of a hybrid vehicle, which can greatly reduce the rattling noise by reducing the vibration of the internal gear. have.

상기와 같은 목적을 달성하기 위한 본 발명은, 외장형 전동식 A/T 오일펌프를 적용한 하이브리드 차량에 있어서, The present invention for achieving the above object, in the hybrid vehicle to which the external electric A / T oil pump is applied,

자동변속기의 밸브바디에 형성되어 상기 오일펌프의 오일토출구쪽으로 이어진 펌프라인내 라인압력을 상승시킴으로써, 상기 오일펌프쪽에서 발생되는 치타음(Rattle Noise)의 생성을 억제하는 제어를 구현하는 것을 특징으로 한다.
Formed on the valve body of the automatic transmission to increase the line pressure in the pump line leading to the oil discharge port of the oil pump, it characterized in that to implement the control to suppress the generation of the rattling (Rattle Noise) generated from the oil pump side .

상기 라인압력상승제어는 자동변속기오일인 ATF(Auto Transmission Fluid)의 상승된 유온과 특정위치를 갖는 변속단과 엔진정지에 따른 엔진 쿨링팬 작동여부를 함께 고려한 조건에서 판단하고, 판단된 조건들이 모두 제어조건을 만족할 때 수행한다.
The line pressure increase control is judged under the conditions considering the elevated oil temperature of the ATF (Auto Transmission Fluid), which is an automatic transmission oil, and a shift stage having a specific position and whether the engine cooling fan is operated according to the engine stop, and all the determined conditions are controlled. Execute when the condition is satisfied.

상기 라인압력상승제어는 상기 오일펌프의 토출부쪽에 이어진 상기 자동변속기의 밸브바디내 펌프라인에 걸리는 라인압을 TCU(Transmission Control Unit)가 라인압제어밸브를 제어해 구현한다.
The line pressure increase control implements the line pressure applied to the pump line in the valve body of the automatic transmission connected to the discharge part of the oil pump by controlling the line pressure control valve (TCU).

상기 TCU는 변속단 위치가 라인압력상승제어 조건을 만족하는지를 판단하고, 조건을 만족하면 이어서 ATF의 상승된 유온이 라인압력상승제어 조건을 만족하는지를 판단한 다음, 조건을 만족하면 엔진정지에 따른 엔진 쿨링팬이 작동정지인지를 판단한 후, 상기 조건들이 모두 만족할 때 라인압제어밸브를 제어해 라인압력상승제어를 수행한다.
The TCU determines whether the shift stage position satisfies the line pressure increase control condition. If the condition is satisfied, the TCU determines whether the elevated oil temperature of the ATF satisfies the line pressure increase control condition, and if the condition is satisfied, the engine cooling according to the engine stop. After determining whether the fan is stopped, the line pressure control valve is controlled when all of the above conditions are satisfied.

상기 변속단 위치는 P(주차)나 N(중립)이고, 상기 ATF의 상승유온이 대체로 90℃이상이며, 상기 라인압력의 상승압력은 대체로 10bar인 조건이다.
The shift stage position is P (parking) or N (neutral), the rising oil temperature of the ATF is approximately 90 ℃ or more, the rising pressure of the line pressure is generally 10bar.

상기 조건들 모두가 함께 만족되지 않으면, 상기 TCU는 상기 라인압력의 압력이 상승되지 않도록 제어하며, 상기 라인압력의 제어압력은 대체로 5bar로 제어한다.
If all of the above conditions are not satisfied together, the TCU controls the pressure of the line pressure not to rise, and the control pressure of the line pressure is controlled to approximately 5 bar.

이러한 본 발명에 의하면, 하이브리드 차량에 적용된 외장형 전동식 A/T 오일펌프가 치타음(Rattle Noise)을 형성하는 조건에 도달될 때 오펌프쪽 토출압을 높여 특히, 내접기어타입의 외장형 전동식 A/T 오일펌프에서 발생하는 치타음(Rattle Noise)을 크게 저감시키는 효과를 갖는다.According to the present invention, when the external electric A / T oil pump applied to the hybrid vehicle reaches the condition to form a ratchet noise, the discharge pressure on the pump side is increased, particularly, the external electric A / T of the internal gear type. It has an effect of greatly reducing the rattling noise (Rattle Noise) generated in the oil pump.

오일펌프의 치타음(Rattle Noise) 발생조건시 TCU(Transmission Control Unit)가 오일펌프의 토출구쪽 라인압력을 상승하도록 제어하므로, 자동변속기나 오일펌프쪽 하드웨어(Hardware)의 변경 없이도 구현되는 효과도 갖는다.Since the transmission control unit (TCU) controls the discharge port side of the oil pump to increase the line pressure under the condition of occurrence of the rattling noise of the oil pump, it has the effect of being realized without changing the automatic transmission or the hardware of the oil pump side. .

치타음(Rattle Noise)의 생성방지나 저감이 TCU(Transmission Control Unit)의 제어로 구현되므로, 필요시에 따라 간헐적으로 수행될 수 있는 효과도 갖는다.
Since the prevention or reduction of the generation of the rattling noise is implemented under the control of the transmission control unit (TCU), it also has an effect that can be performed intermittently as necessary.

도 1은 전동식 오일펌프를 적용한 일반적인 하이브리드 차량의 구성도이고, 도 2는 본 발명에 따른 전동식 오일펌프 치타음 저감방법의 흐름도이며, 도 3은 본 발명의 전동식 오일펌프 치타음 저감방법을 적용할 때, 자동변속기 밸브바디내 펌프라인의 라인압력 형성도이다.1 is a block diagram of a general hybrid vehicle to which the electric oil pump is applied, and FIG. 2 is a flowchart of the electric oil pump cheetah reduction method according to the present invention, and FIG. 3 is the electric oil pump cheetah reduction method of the present invention. This is the line pressure buildup of the pump line in the automatic transmission valve body.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명하며, 이러한 실시예는 일례로서 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 여러 가지 상이한 형태로 구현될 수 있으므로, 여기에서 설명하는 실시예에 한정되지 않는다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

도 1은 전동식 오일펌프를 적용한 일반적인 하이브리드 차량의 구성도를 나타낸다.1 shows a configuration diagram of a general hybrid vehicle to which an electric oil pump is applied.

도시된 바와 같이, 본 발명의 하이브리드 차량은 엔진과 자동변속기(1)사이로 엔진클러치와 구동모터를 설치하고, 자동변속기(1)의 입력축에 오일펌프(7)를 연결한 구성을 갖는다.As shown, the hybrid vehicle of the present invention has a configuration in which an engine clutch and a driving motor are installed between the engine and the automatic transmission 1, and an oil pump 7 is connected to the input shaft of the automatic transmission 1.

또한, 상기 하이브리드 차량은 엔진 초기시동을 위한 ISG와 고전압 배터리 및 고전압을 저전압으로 낮추는 컨버터(Low DC Converter)를 더 갖추며, 이러한 장치들과 더불어 하이브리드 차량을 구성하기 위한 모든 설비들을 갖춘다.In addition, the hybrid vehicle further has an ISG for engine start-up, a high voltage battery and a low DC converter for lowering the high voltage, and together with these devices, all the facilities for constructing the hybrid vehicle.

본 실시예에서 상기 구동모터는 자동변속기(1)의 입력축을 회전시키는 모터로터를 갖춘 타입이고, 상기 엔진클러치는 엔진동력과 구동모터의 동력을 선택적으로 자동변속기(1)쪽에 전달하는 작용을 구현한다.In this embodiment, the drive motor is a type having a motor rotor for rotating the input shaft of the automatic transmission (1), the engine clutch implements the action of selectively transmitting the engine power and the power of the drive motor to the automatic transmission (1) side. do.

그리고, 상기 오일펌프(7)는 구동모터의 모터로터를 회전시켜 오일을 토출하는 외장형 전동식 A/T오일펌프이면서 특히, 내접기어타입의 외장형 전동식 A/T 오일펌프를 적용한다.The oil pump 7 is an external electric A / T oil pump for discharging oil by rotating the motor rotor of the driving motor, and in particular, an external electric A / T oil pump of an internal gear type is applied.

또한, 상기 오일펌프(7)가 자동변속기(1)의 밸브바디(2)쪽으로 연결된 유압회로는 오일펌프(7)쪽에 형성된 오일토출부(8)로 연결된 펌프라인(3)으로 이루어지고, 상기 펌프라인(3)에는 오일흐름을 제어하는 스풀밸브(4)를 갖춘 레귤레이터밸브(5)와 더불어 라인압을 제어하도록 TCU(10,Transmission Control Unit)로 제어되는 라인압제어밸브(6)를 설치함으로써, 오일펌프(7)로부터 토출되는 유량을 제어한다.In addition, the hydraulic circuit connected to the valve body 2 side of the automatic transmission 1 of the oil pump 7 is composed of a pump line 3 connected to an oil discharge part 8 formed on the oil pump 7 side, The pump line (3) is provided with a regulator valve (5) having a spool valve (4) for controlling oil flow, and a line pressure control valve (6) controlled by a transmission control unit (TCU) to control the line pressure. As a result, the flow rate discharged from the oil pump 7 is controlled.

통상, 하이브리드 차량에 적용된 오일펌프(7)는 자동변속기오일인 ATF(Auto Transmission Fluid)의 오일점도의 영향을 크게 받고, 특히 전술한 바와 같이 외장형 전동식이면서 내접기어타입 오일펌프인 경우, ATF의 특정한 유온과 변속단 및 엔진 조건에서 기어 떨림인 치타음(Rattle Noise)의 발생이 크게 증가될 수밖에 없다.Typically, the oil pump 7 applied to the hybrid vehicle is greatly influenced by the oil viscosity of the ATF (Auto Transmission Fluid), which is an automatic transmission oil, and in particular, in the case of the external electric and internal gear type oil pump as described above, In the oil temperature, gear stage and engine conditions, the generation of the rattling noise (Rattle Noise) is greatly increased.

본 실시예에선 상기와 같은 오일펌프(7)의 치타음(Rattle Noise)생성을 오일펌프(7)의 토출구쪽으로 형성된 유압회로를 이용해 억제하며, 도 2는 이에 따른 치타음 저감방법의 흐름도를 나타낸다.In this embodiment, the generation of the rattling noise of the oil pump 7 as described above is suppressed using the hydraulic circuit formed toward the discharge port of the oil pump 7, and FIG. 2 shows a flowchart of the method for reducing the cheetah sound accordingly. .

도시된 바와 같이, 본 실시예는 TCU(10)가 치타음(Rattle Noise)의 발생조건이 형성되는지 여부를 S10에서 S30과 같이 단계적으로 확인함으로써, 확인된 치타음(Rattle Noise)의 생성 조건에 맞추어 최적화된 제어를 수행한다. As shown in the drawing, the TCU 10 checks whether or not the condition for generating the ratchet noise is formed step by step S10 as in step S30, so as to determine the condition for generating the checked ratchet noise. Perform optimized control accordingly.

단계S10은 TCU(10)에서 확인하는 첫 항목으로서, 현 차량의 변속단 위치가 P(주차)인지 또는 N(중립)인지 여부를 감지하는 과정이다.Step S10 is a first item checked by the TCU 10 and is a process of detecting whether the shift position of the current vehicle is P (parking) or N (neutral).

이 단계에서 TCU(10)가 P(주차)나 또는 N(중립)을 확인하면 단계S20으로 넘어가는데, 단계S20은 ATF의 유온을 확인해 유온이 90도 이상인지 여부를 판단하는 과정이다.In this step, if the TCU 10 confirms P (parking) or N (neutral), the process proceeds to step S20, where step S20 is a process of determining whether the oil temperature is 90 degrees or more by checking the oil temperature of the ATF.

이 단계에서 TCU(10)가 ATF 유온이 90도 이상(ATF유온≥90℃)임을 확인하면 단계S30으로 넘어가며, 단계S30은 엔진정지시 엔진 쿨링팬이 오프(Off)되었는지 여부를 판단하는 과정이다.In this step, if the TCU 10 confirms that the ATF oil temperature is 90 degrees or more (ATF oil temperature ≥ 90 ° C), the process proceeds to step S30, and step S30 determines whether the engine cooling fan is off when the engine is stopped. to be.

이 단계에서 TCU(10)가 엔진 쿨링팬의 오프(Off)를 확인하면, 단계S40과 같이 TCU(10)는 오일펌프(7)와 자동변속기(1)의 밸브바디(2)가 형성하는 유압회로를 제어함으로써, 오일펌프(7)의 치타음(Rattle Noise)생성을 억제하거나 크게 저감하게 된다.In this step, if the TCU 10 confirms the off of the engine cooling fan (Off), the TCU 10 as shown in step S40 is the hydraulic pressure formed by the valve body 2 of the oil pump (7) and the automatic transmission (1) By controlling the circuit, the generation of Rattle Noise of the oil pump 7 is suppressed or greatly reduced.

이때, TCU(10)는 오일펌프(7)쪽으로 연결된 유압회로의 라인압을 약 10bar에 달할 때까지 상승시키는 제어를 수행한다.At this time, the TCU 10 performs the control of raising the line pressure of the hydraulic circuit connected to the oil pump 7 until it reaches about 10 bar.

도 3은 TCU(10)가 상기와 같은 단계S40를 수행할 때, 오일펌프(7)와 자동변속기(1)의 밸브바디(2)가 형성하는 유압회로의 압력형성을 나타낸다.3 shows the pressure formation of the hydraulic circuit formed by the valve body 2 of the oil pump 7 and the automatic transmission 1 when the TCU 10 performs the above step S40.

도시된 바와 같이, TCU(10)는 유압회로에 설치된 라인압제어밸브(6)를 제어하고, 이를 통해 오일펌프의 흡입부쪽 회로로 설치된 레귤레이터밸브(5)의 스풀밸브(4)를 제어해줌으로써, 오일펌프(7)의 오일토출부(8)로 연결된 펌프라인(3)에 압력을 형성하게 된다.As shown in the drawing, the TCU 10 controls the line pressure control valve 6 installed in the hydraulic circuit, thereby controlling the spool valve 4 of the regulator valve 5 installed in the circuit on the suction side of the oil pump. The pressure is generated in the pump line 3 connected to the oil discharge part 8 of the oil pump 7.

이때, TCU(10)는 상기 펌프라인(3)에 걸리는 라인압력이 ≥10bar에 도달될 때까지 라인압제어밸브(6)를 제어한다.At this time, the TCU 10 controls the line pressure control valve 6 until the line pressure applied to the pump line 3 reaches ≧ 10 bar.

상기와 같이 상기 펌프라인(3)에 걸리는 라인압력이 ≥10bar에 도달되어 오일펌프(7)의 오일토출부(8)쪽에 고압이 형성됨으로써, 외장형 전동식이면서 내접기어타입인 오일펌프(7)에서 기어 떨림인 치타음(Rattle Noise)의 발생이 크게 감소되거나 없어질 수 있게 된다.As described above, the line pressure applied to the pump line 3 reaches ≥ 10 bar, so that a high pressure is formed on the oil discharge part 8 side of the oil pump 7, so that the oil pump 7 is an external electric type and an internal gear type. It is possible to greatly reduce or eliminate the generation of the rattling noise (Rattle Noise).

반면, 본 실시예에선 상기와 같은 단계S10과 단계S20 및 단계S30를 수행하면서 각 단계마다 확인된 항목들이 모두 치타음(Rattle Noise)의 생성 조건에 맞지 않음을 확인하면, TCU(10)는 단계S50으로 이동해 펌프라인(3)에 5bar ≥라인압력이 걸리도록 제어한다.On the other hand, in the present embodiment, when performing the steps S10, S20, and S30 as described above, and confirming that the items identified in each step do not meet the conditions for generating the noise, the TCU 10 performs the step. Go to S50 and control 5 bar ≥ line pressure to the pump line (3).

이러한 5bar ≥라인압력 제어도 TCU(10)가 라인압제어밸브(6)를 제어해 구현한다.This 5bar ≥ line pressure control is also implemented by the TCU 10 controls the line pressure control valve (6).

이와 같이 본 실시예에선 하이브리드 차량에서 자동변속기오일인 ATF(Auto Transmission Fluid)유온이 ≥90℃이상이고, P(주차)나 N(중립)임과 더불어 엔진 쿨링팬 오프(Off)인 조건만족에 따른 치타음(Rattle Noise)의 발생이 예견될 때, 오일펌프(7)로 이어진 밸브바디(2)내 펌프라인(3)쪽에 만들어진 라인압력≥10bar정도의 고압을 이용해 치타음(Rattle Noise)의 발생을 막아줌으로써, 특히 내접기어타입의 외장형 전동식 A/T 오일펌프(7)에서 치타음 저감효과를 높일 수 있게 된다.
Thus, in this embodiment, the ATF (Auto Transmission Fluid) oil temperature of the automatic transmission oil in the hybrid vehicle exceeds ≥90 ℃, P (parking) or N (neutral), and satisfies the condition that the engine cooling fan is off (Off) When the occurrence of the ratchet noise is foreseen, the high pressure of the line pressure ≥ 10 bar created on the side of the pump line 3 in the valve body 2 leading to the oil pump 7 is used. By preventing the occurrence, in particular, in the external gear type A / T oil pump 7 of the internal gear type, it is possible to enhance the cheetah sound reduction effect.


1 : 자동변속기 2 : 밸브바디
3 : 펌프라인 4 : 스풀밸브
5 : 레귤레이터밸브 6 : 라인압제어밸브
7 : 오일펌프 8 : 오일토출부
10 : TCU(Transmission Control Unit)
1: automatic transmission 2: valve body
3: pump line 4: spool valve
5: regulator valve 6: line pressure control valve
7: oil pump 8: oil discharge part
10: Transmission Control Unit (TCU)

Claims (7)

외장형 전동식 A/T 오일펌프를 적용한 하이브리드 차량에 있어서,
자동변속기의 밸브바디에 형성되어 상기 오일펌프의 오일토출구쪽으로 이어진 펌프라인내 라인압력이 자동변속기오일인 ATF(Auto Transmission Fluid)의 상승된 유온과 특정위치를 갖는 변속단과 엔진정지에 따른 엔진 쿨링팬 작동여부를 함께 고려한 조건으로부터 판단되어 상승됨으로써, 상기 오일펌프쪽에서 발생되는 치타음(Rattle Noise)의 생성을 억제하는 제어를 구현하는 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.
In a hybrid vehicle to which an external electric A / T oil pump is applied,
The engine cooling fan according to the gear stage and the engine stop which are formed on the valve body of the automatic transmission and have the increased oil temperature and specific position of the ATF (Auto Transmission Fluid) in the pump line which is connected to the oil discharge port of the oil pump. The method of reducing the oil pump cheetah sound of the hybrid vehicle, characterized in that by implementing the control to suppress the generation of the Rattle Noise generated in the oil pump side by being judged from the conditions that considered the operation together.
청구항 1에 있어서, 상기 판단된 조건들이 모두 제어조건을 만족할 때 수행되는 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.
The method of claim 1, wherein the determined conditions are all performed when the control conditions are satisfied.
청구항 2에 있어서, 상기 라인압력상승제어는 상기 오일펌프의 토출부쪽에 이어진 상기 자동변속기의 밸브바디내 펌프라인에 걸리는 라인압을 TCU(Transmission Control Unit)가 라인압제어밸브를 제어해 구현하는 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.The line pressure increase control of the line pressure applied to the pump line in the valve body of the automatic transmission connected to the discharge side of the oil pump by TCU (Transmission Control Unit) to control the line pressure control valve to implement. A method for reducing oil pump cheetah sounds of a hybrid vehicle, characterized by the above-mentioned. 청구항 3에 있어서, 상기 TCU는 변속단 위치가 라인압력상승제어 조건을 만족하는지를 판단하고, 조건을 만족하면 이어서 ATF의 상승된 유온이 라인압력상승제어 조건을 만족하는지를 판단한 다음, 조건을 만족하면 엔진정지에 따른 엔진 쿨링팬이 작동정지인지를 판단한 후, 상기 조건들이 모두 만족할 때 라인압제어밸브를 제어해 라인압력상승제어를 수행하는 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.
The engine of claim 3, wherein the TCU determines whether the shift stage position satisfies the line pressure increase control condition. If the condition is satisfied, the TCU determines whether the elevated oil temperature of the ATF satisfies the line pressure increase control condition. And determining whether the engine cooling fan is stopped according to the stop, and when the conditions are all satisfied, controlling the line pressure control valve to perform a line pressure increase control.
청구항 4에 있어서, 상기 변속단 위치는 P(주차)나 N(중립)이고, 상기 ATF의 상승유온이 대체로 90℃이상이며, 상기 라인압력의 상승압력이 대체로 10bar인 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.
5. The hybrid vehicle according to claim 4, wherein the shift stage position is P (parking) or N (neutral), the rising oil temperature of the ATF is generally 90 ° C. or more, and the rising pressure of the line pressure is approximately 10 bar. How to reduce oil pump cheetah sound.
청구항 4에 있어서, 상기 조건들 모두가 함께 만족되지 않으면, 상기 TCU는 상기 라인압력의 압력이 상승되지 않도록 제어하는 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.
The method of claim 4, wherein if all of the conditions are not satisfied together, the TCU controls the pressure of the line pressure not to increase.
청구항 6에 있어서, 상기 라인압력의 제어압력이 대체로 5bar인 것을 특징으로 하는 하이브리드 차량의 오일펌프 치타음 저감방법.

The method of claim 6, wherein the control pressure of the line pressure is approximately 5 bar.

KR1020100039520A 2010-04-28 2010-04-28 Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle KR101163878B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100039520A KR101163878B1 (en) 2010-04-28 2010-04-28 Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100039520A KR101163878B1 (en) 2010-04-28 2010-04-28 Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle

Publications (2)

Publication Number Publication Date
KR20110120031A KR20110120031A (en) 2011-11-03
KR101163878B1 true KR101163878B1 (en) 2012-07-09

Family

ID=45391313

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100039520A KR101163878B1 (en) 2010-04-28 2010-04-28 Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle

Country Status (1)

Country Link
KR (1) KR101163878B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7409289B2 (en) * 2020-11-09 2024-01-09 トヨタ自動車株式会社 Noise estimation device and vehicle control device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000234668A (en) 1999-02-16 2000-08-29 Mitsubishi Motors Corp Lubricating oil control device
KR100387807B1 (en) 2000-12-22 2003-06-18 현대자동차주식회사 system for varying line pressure of auto transmission
JP2006046515A (en) 2004-08-05 2006-02-16 Toyota Motor Corp Hydraulic controller of automatic transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000234668A (en) 1999-02-16 2000-08-29 Mitsubishi Motors Corp Lubricating oil control device
KR100387807B1 (en) 2000-12-22 2003-06-18 현대자동차주식회사 system for varying line pressure of auto transmission
JP2006046515A (en) 2004-08-05 2006-02-16 Toyota Motor Corp Hydraulic controller of automatic transmission

Also Published As

Publication number Publication date
KR20110120031A (en) 2011-11-03

Similar Documents

Publication Publication Date Title
EP2322399B1 (en) Drive source stop control device for vehicle
KR101566752B1 (en) Control method and system for hybrid vehicle
JP6432224B2 (en) Control device for electric drive vehicle
JP2013068267A (en) Control apparatus for electric oil pump
KR102008605B1 (en) Control method of electric oil pump
KR20140059614A (en) Method and system for controlling warm-up of clutch fluid for hybrid electrical vehicle
WO2015136749A1 (en) Electric oil pump control device and control method
KR101163878B1 (en) Rattle Noise Decreasing Method of An Oil Pump in Hybrid Vehicle
US8574124B2 (en) Control unit and method to operate a vehicle
CN103380318B (en) The control gear of lock-up clutch
KR20160150161A (en) Method for noise mitigation of electronic oil pump
JPWO2016133083A1 (en) Hydraulic control device for driving force distribution device
JP3769650B2 (en) Hydraulic power source device for transmission
JP2011214691A (en) Method and device for controlling electric oil pump
KR101490914B1 (en) Oil pump system for hybrid vehicle and control method thereof
KR20180107796A (en) Vehicle control method in case of oil pump failure
JP2014027770A (en) Controller for motor pump
US20220379875A1 (en) Method of controlling limp home driving of hybrid vehicle
KR20200127716A (en) System and method for cooling electrical oil pump integrated controller
JP6107704B2 (en) Hydraulic control device for continuously variable transmission
US11130486B2 (en) Limp-home control method for hybrid vehicle
CN111692329B (en) Method for controlling electric oil pump
KR102532659B1 (en) Oil pump motor cotrol apparatus and method
KR101119328B1 (en) Controlling method of a subsidiary oil pump for an automatic transmission
US20230051429A1 (en) Method of Controlling Electric Oil Pump for Vehicle

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20150630

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20160630

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20180628

Year of fee payment: 7