KR20170120388A - Exhaust gas recirculation actuator apparatus - Google Patents

Exhaust gas recirculation actuator apparatus Download PDF

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Publication number
KR20170120388A
KR20170120388A KR1020160048817A KR20160048817A KR20170120388A KR 20170120388 A KR20170120388 A KR 20170120388A KR 1020160048817 A KR1020160048817 A KR 1020160048817A KR 20160048817 A KR20160048817 A KR 20160048817A KR 20170120388 A KR20170120388 A KR 20170120388A
Authority
KR
South Korea
Prior art keywords
motor
egr
housing
cooling
gear
Prior art date
Application number
KR1020160048817A
Other languages
Korean (ko)
Inventor
임재필
Original Assignee
현대자동차주식회사
기아자동차주식회사
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 현대자동차주식회사, 기아자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020160048817A priority Critical patent/KR20170120388A/en
Priority to CN201610854721.8A priority patent/CN107304735A/en
Priority to DE102016221079.3A priority patent/DE102016221079A1/en
Publication of KR20170120388A publication Critical patent/KR20170120388A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings
    • F02M26/73—Housings with means for heating or cooling the EGR valve

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Power Engineering (AREA)

Abstract

The EGR actuator device according to the present invention includes a motor for operating a connecting member connected to an EGR valve for regulating exhaust gas recirculation amount, a motor housing having a mounting portion for mounting the motor, To control the EGR valve, and the motor housing includes a cooling unit that is provided to cool the motor and the controller.

Description

[0001] EXHAUST GAS RECIRCULATION ACTUATOR APPARATUS [0002]

The present invention relates to an EGR actuator device of an exhaust gas recirculation device.

In general, the exhaust gas discharged from a vehicle engine contains a large amount of harmful substances such as carbon monoxide and nitrogen oxides. However, since the nitrogen oxide is a particularly harmful factor causing acid rain, global warming or human respiratory diseases, .

The amount of nitrogen oxide increases as the combustion temperature of the fuel increases in the engine.

Various methods have been attempted to reduce the emission of nitrogen oxides. Exhaust gas recirculation (EGR) systems have been commonly applied to vehicles.

The EGR system recirculates a part of the exhaust gas discharged after the combustion of the engine to the intake apparatus of the engine and then flows back to the combustion chamber of the engine so that the air-fuel ratio of the mixture, which is a mixture of fuel and air, The density is lowered and the combustion temperature is lowered.

That is, when it is necessary to reduce the amount of exhaust of nitrogen oxides according to the operating state of the engine, the EGR system supplies a part of the exhaust gas to the intake manifold of the engine and flows into the combustion chamber. When the exhaust gas, which is an inert gas whose volume does not change, The flame propagation speed is lowered when the fuel is burned, so that the burning rate of the fuel is lowered and the rise of the combustion temperature is suppressed, so that the generation of nitrogen oxides is suppressed.

The conventional EGR system as described above includes an EGR valve device installed between the exhaust path of the engine and the EGR cooler and supplying exhaust gas discharged from the engine to the exhaust path to the EGR cooler as required.

The EGR valve apparatus includes an actuator whose operation is controlled through an electronic control unit, a connecting member for transmitting an operating force of the actuator, and an EGR valve for opening and closing a port connected to the EGR cooler while being rotated by the connecting member.

Recently, the EGR valve apparatus has the electronic control unit and the actuator integrally formed, but the motor is cooled through the cooling water passage to the lower housing under the motor. Therefore, the electronic control unit including the PCB integrated circuit is not cooled, and thus it has been difficult to mount a separate heat-radiating pad.

The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.

The present invention proposes an EGR actuator device in which a motor and a controller are integrally formed.

The EGR actuator device of the present invention includes a motor for operating a connecting member connected to an EGR valve for regulating an exhaust gas recirculation amount, a motor housing having a mounting portion for mounting the motor, a motor housing mounted on the motor housing, And controlling the EGR valve, wherein the motor housing includes a cooling unit provided to cool the motor and the controller.

The cooling unit includes a cooling water inlet formed at one side of the motor housing and through which the cooling water flows, a cooling passage through which the cooling water passes, and a cooling water outlet formed at the other side of the motor housing, .

The cooling channel may be formed to surround the protruding portion of the mounting portion.

The cooling channel may be formed so as to have a curvature in a vertical direction or in a lateral direction.

The controller may be formed at a lower portion of the motor.

The cooling channel may be formed on the controller.

A gear housing coupled to the motor housing, and a gear disposed in the gear housing and transmitting the power of the motor to the connecting member.

The motor housing may further include a motor fixing portion that connects the motor and the gear, and fixes the motor to the motor housing.

The motor fixing part may include an anti-vibration part formed on the motor fixing part to prevent vertical vibration of the motor.

The gear may include a gear support portion that fixes the gear to the gear housing and supports the gear to the motor fixing portion.

According to the present invention, by arranging the cooling unit between the motor and the controller in the EGR actuator device in which the motor and the controller are integrally formed, it is possible to improve the cooling efficiency of the motor and to provide an environment for preventing the deterioration of the controller due to the heat generation of the motor do.

Further, the present invention provides an environment in which the structure of the EGR actuator device is optimized to reduce the weight and size of the actuator.

1 is a view showing a part of an exhaust gas recirculation apparatus including an EGR actuator device according to an embodiment of the present invention.
2 is a view of the exhaust gas recirculation apparatus according to Fig. 1 viewed from A; Fig.
3 is a perspective view of an EGR actuator device according to an embodiment of the present invention.
FIG. 4 is a view of the EGR actuator device according to FIG. 3 viewed from a.
5 is a cross-sectional view of the motor housing taken along the line X-X 'in FIG.
Fig. 6 is a view showing a structure of a cooling passage according to Fig. 5. Fig.
7 is an exploded perspective view of the EGR actuator device according to FIG.
8 is a view showing a motor fixing portion and a gear supporting portion according to FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Like numbers refer to like elements throughout the specification.

As used herein, the terms "vehicle", "car", "vehicle", "automobile", or other similar terms are intended to encompass various types of vehicles, including sports utility vehicles (SUVs), buses, Including automobiles, including ships, aircraft, and the like, including boats and ships, and may be used in hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen fuel vehicles and other alternative fuels Fuel) vehicles.

Additionally, some methods may be executed by at least one controller. The term controller refers to a hardware device comprising a memory and a processor adapted to execute one or more steps that are interpreted as an algorithmic structure. The memory is adapted to store algorithm steps and the processor is adapted to perform the algorithm steps specifically to perform one or more processes described below.

Further, the control logic of the present invention may be embodied in a non-volatile, readable medium on a computer readable medium, including executable program instructions, executed by a processor, controller, or the like. Examples of computer-readable means include, but are not limited to, ROM, RAM, CD-ROM, magnetic tape, floppy disk, flash drive, smart card and optical data storage. The computer readable medium can be distributed to networked computer systems and stored and executed in a distributed manner, for example, by a telematics server or a CAN (Controller Area Network).

Now, an EGR actuator device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8. FIG.

FIG. 1 is a view showing a part of an exhaust gas recirculation device including an EGR actuator device according to an embodiment of the present invention, and FIG. 2 is a view showing an exhaust gas recirculation device according to FIG. At this time, the exhaust gas recirculation apparatus is only shown in the schematic configuration necessary for the explanation according to the embodiment of the present invention, and is not limited to this configuration.

1 and 2, an exhaust gas recycling apparatus according to an embodiment of the present invention includes an exhaust gas recirculation (EGR) valve 10, a connecting member 20, and an EGR actuator device 100 .

The EGR valve 10 is disposed in the middle of an EGR pipe (not shown) that connects an exhaust manifold (not shown) and an intake manifold (not shown). The EGR valve 10 regulates the flow of EGR gas recirculated from the exhaust manifold to the intake manifold.

The EGR actuator device 100 is connected to the EGR valve 10 through the connecting member 20. The EGR actuator device 100 operates the connecting member 20 to adjust the opening and closing operation of the EGR valve 10. [

FIG. 3 is a perspective view of an EGR actuator device according to an embodiment of the present invention, FIG. 4 is a view of an EGR actuator device according to FIG. 3, and FIG. 5 is a cross- Fig. At this time, the exhaust gas recirculation apparatus is only shown in the schematic configuration necessary for the explanation according to the embodiment of the present invention, and is not limited to this configuration.

3 to 5, an EGR actuator device 100 according to an embodiment of the present invention includes a motor housing 110 in which a mounting portion is formed to mount a motor, And a housing (120).

The motor housing 110 is disposed with the cooling unit 130 according to one embodiment of the present invention.

The cooling unit 130 includes a cooling water inlet 132, a cooling water outlet 134, and a cooling channel 136 in accordance with an embodiment of the present invention.

The cooling water inlet 132 is formed at one side of the motor housing 110, and the cooling water is introduced. The cooling water outlet 134 is formed on the other side of the motor housing 110 and allows the cooling water passing through the cooling passage 136 to flow out.

The motor housing 110 is equipped with a motor 140 and a controller 150 according to one embodiment of the present invention.

The motor 140 operates the connecting member 20 to operate the EGR valve 10. [ The motor 140 is disposed at a mounting portion of the motor housing 110. The cooling passage 136 of the cooling unit 130 is formed so as to surround the protruding portion of the mounting portion on which the motor 140 is mounted. Here, the motor 140 may be a BLDC motor (Brushless Less Direct Current Electric Motor) according to an embodiment of the present invention.

Fig. 6 is a view showing a structure of a cooling passage according to Fig. 5. Fig.

Referring to FIG. 6, the cooling passage 136 is formed in the shape of a wave having a curvature in the up-down or left-right direction. For example, the cooling channel 136 may be formed in a wavy shape according to an embodiment of the present invention. Therefore, the cooling flow path 136 formed in a wavy shape surrounds the motor 140, thereby improving the heat transfer efficiency of the cooling water and cooling the motor more effectively.

The controller 150 selectively operates the motor 140 to control the EGR valve 10. [ Then, the controller 150 controls the valve trajectory of the EGR valve 10, performs a failure diagnosis of the EGR actuator, and transmits it to the ECU (not shown). The controller 150 is formed below the motor 140 and may be a PCB substrate. The cooling channel 136 of the cooling unit 130 is disposed above the controller 150.

Therefore, the EGR actuator device 100 according to the embodiment of the present invention can be configured such that the cooling unit 130 is disposed between the motor 140 and the controller 150, It is possible to prevent the deterioration.

FIG. 7 is an exploded perspective view of the EGR actuator device shown in FIG. 3, and FIG. 8 is a view showing a motor fixing portion and a gear supporting portion according to FIG.

Referring to FIGS. 7 and 8, in the EGR actuator device 100 according to the embodiment of the present invention, the gear housing 120 is fastened to the lower portion of the motor housing 110.

A motor 140 and a controller 150 are mounted on the motor housing 110. A gear 170 for transmitting the power of the motor 140 to the connecting member 20 is disposed in the gear housing 120.

The motor 140 is fixed to the motor housing 110 through the motor fixing portion 160. The motor 140 transmits power to the gear 170 via the motor pinion gear 142. The motor fixing part 160 connects the motor 140 and the gear 170 and prevents vibration of the motor 140 by using the vibration preventing part 162. Here, the vibration preventing portion 162 may be a flat washer and a wave washer.

The gear support portion 172 fixes the gear 170 to the gear housing 120. The gear support portion 172 is fastened to the motor fixing portion 160 to support the gear 170 to the motor fixing portion 160.

As described above, in the EGR actuator device according to the embodiment of the present invention, the cooling unit is arranged between the motor and the controller in the EGR actuator device in which the motor and the controller are integrally formed, thereby improving the cooling efficiency of the motor, Thereby preventing the deterioration of the apparatus.

In addition, the EGR actuator device according to an embodiment of the present invention provides an environment in which the weight and size of the actuator can be reduced by optimizing the structure of the EGR actuator device.

The embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (10)

A motor for operating a connecting member connected to the EGR valve for regulating the exhaust gas recirculation amount, and
A motor housing in which a mounting portion is formed to mount the motor,
And a controller mounted on the motor housing for selectively operating the motor to control the EGR valve,
The motor housing including a cooling unit adapted to cool the motor and the controller. The method of claim 1,
The cooling unit includes:
A cooling water inlet formed at one side of the motor housing for receiving cooling water,
A cooling flow passage through which the cooling water passes, and
A cooling water outlet port formed on the other side of the motor housing for discharging cooling water of the cooling passage,
And an EGR actuator. 3. The method of claim 2,
The cooling channel
And the EGR actuator device is formed to surround the protruded portion of the mounting portion. 4. The method of claim 3,
The cooling channel
Wherein the EGR actuator is formed so as to have a curvature in a vertical direction or in a lateral direction. The method of claim 1,
The controller comprising:
And an EGR actuator device formed at a lower portion of the motor. The method of claim 5,
The cooling channel
And an EGR actuator device formed on the controller. The method of claim 1,
A gear housing coupled to the motor housing,
A gear housing disposed in the gear housing for transmitting the power of the motor to the connecting member,
Further comprising an EGR actuator. 8. The method of claim 7,
The motor housing includes:
And a motor fixing part for fixing the motor to the motor housing,
Further comprising an EGR actuator. 9. The method of claim 8,
The motor-
And a vibration preventing portion formed on an upper portion of the motor fixing portion to prevent vertical vibration of the motor,
And an EGR actuator. The method of claim 9,
The gear
A gear support portion for supporting the gear to the motor fixing portion,
And an EGR actuator.
KR1020160048817A 2016-04-21 2016-04-21 Exhaust gas recirculation actuator apparatus KR20170120388A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020160048817A KR20170120388A (en) 2016-04-21 2016-04-21 Exhaust gas recirculation actuator apparatus
CN201610854721.8A CN107304735A (en) 2016-04-21 2016-09-27 EGR valve actuation device device
DE102016221079.3A DE102016221079A1 (en) 2016-04-21 2016-10-26 EGR actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160048817A KR20170120388A (en) 2016-04-21 2016-04-21 Exhaust gas recirculation actuator apparatus

Publications (1)

Publication Number Publication Date
KR20170120388A true KR20170120388A (en) 2017-10-31

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ID=60020899

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160048817A KR20170120388A (en) 2016-04-21 2016-04-21 Exhaust gas recirculation actuator apparatus

Country Status (3)

Country Link
KR (1) KR20170120388A (en)
CN (1) CN107304735A (en)
DE (1) DE102016221079A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101976953B1 (en) * 2017-11-08 2019-05-09 현대자동차주식회사 Egr valve assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002349360A (en) * 2001-05-28 2002-12-04 Mitsubishi Electric Corp Exhaust gas recirculation valve
JP4206920B2 (en) * 2003-12-19 2009-01-14 株式会社デンソー Actuator holding device
CN102449296A (en) * 2009-04-20 2012-05-09 万国引擎知识产权有限责任公司 Exhaust gas recirculation valve and method of cooling
JP2014040792A (en) * 2012-08-22 2014-03-06 Denso Corp Exhaust gas control valve
TWI629327B (en) 2013-09-03 2018-07-11 東亞合成股份有限公司 Adhesive composition (1)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101976953B1 (en) * 2017-11-08 2019-05-09 현대자동차주식회사 Egr valve assembly

Also Published As

Publication number Publication date
CN107304735A (en) 2017-10-31
DE102016221079A1 (en) 2017-10-26

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