KR20170073788A - Bimetal Orifice for Engine - Google Patents

Bimetal Orifice for Engine Download PDF

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Publication number
KR20170073788A
KR20170073788A KR1020150181834A KR20150181834A KR20170073788A KR 20170073788 A KR20170073788 A KR 20170073788A KR 1020150181834 A KR1020150181834 A KR 1020150181834A KR 20150181834 A KR20150181834 A KR 20150181834A KR 20170073788 A KR20170073788 A KR 20170073788A
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KR
South Korea
Prior art keywords
metal
engine
lubricating oil
temperature
orifice
Prior art date
Application number
KR1020150181834A
Other languages
Korean (ko)
Inventor
김태수
Original Assignee
현대중공업 주식회사
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Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150181834A priority Critical patent/KR20170073788A/en
Publication of KR20170073788A publication Critical patent/KR20170073788A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/14—Lubrication of pumps; Safety measures therefor
    • 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
    • F01M1/18—Indicating or safety devices
    • F01M1/20—Indicating or safety devices concerning lubricant 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • 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
    • F16N—LUBRICATING
    • F16N27/00—Proportioning devices
    • 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
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • 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
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/20—Amount of lubricant
    • 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
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/20—Amount of lubricant
    • F16N2270/22—Amount of lubricant with restrictions
    • F16N2270/26—Amount of lubricant with restrictions variable

Abstract

The present invention relates to a turbocharger for increasing the output of an engine, comprising a first metal having a first thermal expansion coefficient, and a second metal having one end connected to an inner surface of a transfer portion for providing a flow path for lubricant moving in a first direction, And a second metal having a second coefficient of thermal expansion smaller than the first coefficient of thermal expansion, wherein the first metal and the second metal are disposed on the inner surface of the transfer section when the temperature of the lubricant exceeds a predetermined reference temperature And the other side opposite to the engaged one is located at a second position facing the first direction from the first position.

Description

Bimetal Orifice for Engine < RTI ID = 0.0 >

The present invention relates to a bimetallic orifice for an engine for regulating a diameter of a flow path for feeding lubricating oil supplied to a turbocharger of an engine.

Generally, an engine is a device for supplying propulsion to a vehicle such as a ship, a vehicle, and an aircraft. Such an engine is manufactured by assembling various components such as a turbocharger composed of a compressor and a turbine, a combustion chamber in which a gas and a fuel are mixed and exploded, a piston for converting the explosion into a power, and a bearing for reducing friction.

The turbo charger compresses the intake air with the exhaust gas discharged from the engine to improve the output efficiency of the engine and supplies the compressed air to the inside of the combustion chamber. The turbine is rotated by the exhaust gas discharged from the engine, and the compressor is powered by the rotation of the turbine to compress the intake air. Accordingly, the turbocharger further includes a rotating shaft for connecting the turbine and the compressor and rotating as the turbine is rotated to transmit the power of the turbine to the compressor, and a bearing for supporting the rotating shaft. The bearing supporting the rotary shaft is continuously supplied with lubricant within a predetermined pressure range so that friction generated as the rotary shaft rotates is reduced. In this case, the bearing is supplied with lubricating oil conveyed through a passage such as a pipe or a pipe.

On the other hand, in the case of a relatively low lubricating oil temperature condition such as an engine startup, the viscosity of the lubricating oil is high and the supply pressure for supplying the lubricating oil to the turbocharger is made high. For example, the supply pressure of the lubricating oil at the initial start of the engine may be 8 bars. In this case, the turbocharger may be damaged or broken. In order to prevent this, an orifice is provided in the flow path for transferring the lubricant to the turbocharger. The lubricating oil is supplied to the front end of the orifice and discharged to the rear end through the orifice.

However, since the orifice according to the related art reduces the diameter of the oil passage and reduces the amount of lubricating oil discharged to the rear end of the orifice, the supply pressure of the lubricating oil supplied to the turbocharger during the engine operation, There is a problem that is below the range. For example, the normal pressure range may be between 2 and 4.5 bars. Accordingly, the orifice according to the prior art has a problem that the turbocharger is damaged or broken at the time of engine operation in which the temperature of the lubricating oil becomes high.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bimetallic orifice for an engine capable of increasing a supply pressure of lubricating oil supplied to a turbocharger during an engine operation in which the temperature of the lubricating oil is increased.

In order to solve the above-described problems, the present invention can include the following configuration.

The bimetallic orifice for an engine according to the present invention is a bimetallic orifice for an engine, which is coupled to an inner surface of a transfer part for providing a flow path for lubricating oil moving in a first direction toward a turbocharger for increasing the output of the engine, ; And a second metal coupled to the first metal and having a second thermal expansion coefficient less than the first thermal expansion coefficient. Wherein the first metal and the second metal are arranged such that when the temperature of the lubricating oil exceeds a predetermined reference temperature, the other side opposite to the one side coupled to the inner surface of the transfer portion is moved from the first position to the second position Respectively.

In the bimetallic orifice for an engine according to the present invention, the first metal and the second metal are respectively shrunk so that the other one of the first metal and the second metal is located at the second position when the temperature of the lubricant is a predetermined reference temperature .

In the bimetallic orifice for an engine according to the present invention, the first metal may be one of iron (Fe) and iron-nickel (Fe-Ni) alloys.

In the bimetallic orifice for an engine according to the present invention, the second metal may be one of copper (Cu), copper-zinc (Cu-Zn) alloy and nickel-chromium-iron (Ni-Cr-Fe) alloy.

According to the present invention, the following effects can be achieved.

The present invention is embodied to increase the supply amount of the lubricating oil supplied to the turbocharger during engine operation in which the temperature of the lubricating oil is increased, thereby increasing the supply pressure of the lubricating oil supplied to the turbocharger. Accordingly, the present invention prevents the turbocharger from being damaged or broken, thereby reducing the operating cost of operating the engine.

1 is a schematic perspective view of a bimetal orifice for an engine according to the present invention;
2 is a schematic cross-sectional view for explaining a bimetallic orifice for an engine according to the present invention installed in a flow path
3 is a schematic cross-sectional view for explaining one side and the other side of a first metal and a second metal in a bimetal orifice for an engine according to the present invention
FIG. 4 is a schematic operating state diagram showing a state in which the bimetal orifice for an engine is operated according to the present invention. FIG.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

Hereinafter, embodiments of a bimetal orifice for an engine according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of a bimetallic orifice for an engine according to the present invention, FIG. 2 is a schematic sectional view for explaining a bimetallic orifice for an engine according to the present invention installed in a passage, FIG. 3 is a cross- FIG. 4 is a schematic operational state view illustrating a state in which the bimetal orifice for an engine according to the present invention operates. FIG. 4 is a schematic sectional view illustrating one side and the other side of the first metal and the second metal in FIG.

1 and 2, the bimetal orifice 1 for an engine according to the present invention is for minimizing supply pressure fluctuation due to temperature change of lubricating oil supplied to a turbocharger (not shown) during engine operation. In particular, the bimetallic orifice 1 for an engine according to the present invention can expand and contract according to the temperature of the lubricating oil, thereby changing the diameter of the passage for lubricating the lubricating oil to the turbocharger.

To this end, the bimetallic orifice 1 for an engine according to the present invention comprises a bimetal orifice 1 for an engine, which is coupled to the inner surface of a transfer part 10 for providing a flow path for lubricant moving in a first direction toward the turbocharger, And a second metal (3) coupled to the first metal (2) and having a second thermal expansion coefficient less than the first thermal expansion coefficient.

The turbocharger is installed to increase the output of the engine. The engine may be any one of a diesel engine, a gas engine, and a dual-fuel engine. The engine is installed on the ship and can generate power for propelling the ship. The turbocharger compresses the air supplied to the engine by using the exhaust gas discharged from the engine. Accordingly, the engine can generate compressed air and generate more power. Therefore, the turbocharger can increase the output of the engine. The transfer unit 10 provides a flow path for supplying lubricant to the turbocharger. For example, the transfer section 10 may be a pipe such as a pipe or a pipe. The lubricating oil can be supplied to the turbocharger along the transfer part 10. [ In this case, the lubricant can move in a first direction toward the turbocharger. The temperature of the lubricating oil becomes high when the load of the engine is increased. The lubricating oil is lowered in temperature when the engine to be operated is stopped. The supply pressure of the lubricating oil supplied to the turbocharger may vary depending on the temperature of the lubricating oil. The first metal (2) and the second metal (3) are installed in the transferring part (10), so that the diameter of the transferring part (10) can be adjusted. For example, the first metal 2 and the second metal 3 may be expanded or contracted according to the temperature of the lubricant oil to adjust the diameter of the transfer portion 10. When the diameter of the transfer part 10 is increased, the amount of lubricating oil supplied to the turbocharger is increased, so that the supply pressure is increased. On the other hand, when the diameter of the transfer portion 10 is reduced, the amount of the lubricating oil supplied to the turbocharger is reduced, so that the supply pressure is lowered.

Accordingly, the bimetal orifice 1 for an engine according to the present invention can achieve the following operational effects.

First, the bimetallic orifice 1 for an engine according to the present invention is configured to increase the supply amount of the lubricating oil supplied to the turbocharger during engine operation in which the temperature of the lubricating oil increases, thereby increasing the supply pressure of the lubricating oil supplied to the turbocharger . Accordingly, the present invention prevents the turbocharger from being damaged or broken, thereby reducing the operating cost of operating the engine.

Secondly, the bimetallic orifice 1 for an engine according to the present invention reduces the diameter of the transfer part 10 when the engine starts at a low temperature of the lubricating oil. When the lubricating oil temperature is high, the diameter of the transfer part 10 Can be increased. Accordingly, the bimetallic orifice 1 for an engine according to the present invention does not need to separately adjust the diameter of the transfer part 10 according to the operation state of the engine. Therefore, it is possible to shorten preparation time required for operation of the engine, It is possible to reduce the amount of force applied to adjust the diameter of the transfer unit 10.

Hereinafter, the first metal 2 and the second metal 3 will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 and 2, the first metal 2 is provided with a transfer part (not shown) for providing a flow path for lubricant moving in a first direction (direction of arrow D1, shown in FIG. 3) toward a turbocharger (10a) of the housing (10). The turbocharger is installed to increase the output of the engine. The first metal 2 is bonded to the transferring part 10 by any one of welding, adhesion and forced fit to the transferring part 10 so that one side 2a of the first metal 2 is bonded to the inner surface 10a of the transferring part 10 Can be combined. In this case, the first metal 2 may be positioned in a direction toward the center of the diameter of the transfer portion 10 on the other side 2b. In this case, the position of the other side 2b of the first metal 2 may be the first position of the other side 2b of the first metal 2. The first metal (2) may be located at a second position where the other side (2b) is spaced from the first position. The second position may be a position away from the first position toward the first direction (D1 arrow direction, shown in Fig. 3). The higher the temperature of the lubricant, the greater the distance between the first position and the second position. The lubricating oil may be supplied to the turbocharger through an inner diameter formed by the other side 2b of the first metal 2. In this case, the length of the inner diameter formed by the other side 2b of the first metal 2 may be A (shown in FIG. 4).

The first metal (2) has a first thermal expansion coefficient. The coefficient of thermal expansion means a ratio to the temperature of thermal expansion of an object under a constant pressure. The first metal (2) is installed in the transfer part (10), so that it can be contacted with the lubricant supplied to the turbocharger. The first metal (2) may expand to a first thermal expansion coefficient as the temperature of the lubricant increases. For example, when the temperature of the lubricating oil is high, the operating load of the engine may increase. The first metal (2) may shrink as the temperature of the lubricating oil becomes lower. For example, when the temperature of the lubricating oil is lowered, the operation of the engine may be stopped. The first metal 2 may expand or contract depending on the temperature of the lubricating oil so that the length between the one side 2a and the other side 2b may be changed. When the temperature of the lubricant is constant, the first metal (2) may maintain a constant length without expanding or contracting. The first thermal expansion coefficient may be larger as the first metal (2) sensitively reacts with the temperature of the lubricant. The first metal 2 may be a single metal such as iron (Fe), but is not limited thereto and may be an alloy such as iron-nickel (Fe-Ni). The first metal (2) may be another metal or another alloy if it can expand or contract. The first metal 2 may be formed in the same size as the second metal 3.

Referring to FIGS. 1 and 2, the second metal 3 is bonded to the first metal 2. For example, the second metal 3 may be formed in the same size as the first metal 2 and may be bonded to the first metal 2 by welding or adhesion. The second metal 3 is bonded to one side 3a of the inner surface 10a of the transfer unit 10 like the first metal 2. The second metal 3 is joined to the transferring part 10 by welding, adhesion, or interference fit to the transferring part 10 together with the first metal 2, Can be coupled to the inner surface (10a) of the transfer unit. In this case, the second metal 3 may be positioned in a direction toward the center of the diameter of the transfer portion 10 on the other side 3b. In this case, a position where the other side 3b of the second metal 3 is located may be a first position of the other side 3b of the second metal. The first position of the other side 3b of the second metal and the first position of the other side 2b of the first metal may be seen to be different from each other. However, in the entire bimetal orifice 1, The first position of the other side 3b of the metal and the first position of the other side 2b of the first metal may be the same position before the inside of the bimetal orifice 1 expands. The second metal (3) may be located at a second position where the other side (3b) is spaced from the first position. The second position may be a position away from the first position toward the first direction (D1 arrow direction, shown in Fig. 3). The higher the temperature of the lubricating oil, the greater the distance between the first position and the second position of the other side (3b) of the second metal (3). The lubricating oil may be supplied to the turbocharger through an inner diameter formed by the other side 3b of the second metal 3. In this case, the length of the inner diameter formed by the other side 3b of the second metal 3 is equal to the length of the inner diameter formed by the other side 2b of the first metal 3 (shown in FIG. 4) Lt; / RTI >

The second metal (3) has a second thermal expansion coefficient. The second thermal expansion coefficient may be smaller than the first thermal expansion coefficient. That is, the second metal (3) may expand less or shrink less than the first metal (2) under the same temperature condition. The second metal (3) is installed in the transfer part (10) like the first metal (2), so that it can be contacted with the lubricant supplied to the turbocharger. The second metal (3) may expand to a second thermal expansion coefficient as the temperature of the lubricating oil increases. For example, when the temperature of the lubricating oil is high, the operating load of the engine may increase. The second metal (3) may shrink as the temperature of the lubricating oil becomes lower. For example, when the temperature of the lubricating oil is lowered, the operation of the engine may be stopped. The second metal 3 may expand or contract depending on the temperature of the lubricating oil so that the length between the one side 3a and the other side 3b may be changed. When the temperature of the lubricating oil is constant, the second metal (3) may maintain a constant length without expanding or contracting. The second metal (3) may have a larger second thermal expansion coefficient as it sensitively responds to the temperature of the lubricating oil. The second metal 3 may be a single metal such as copper but is not limited thereto and may be an alloy such as copper-zinc (Cu-Zn), nickel-chrome-iron have. The second metal 3 may be another metal or another alloy if it can expand or contract.

3 and 4, the first metal 2 and the second metal 3 may have one side 2a connected to the inner surface 10a of the transfer portion when the temperature of the lubricating oil exceeds a predetermined reference temperature, 3a and the other side 2b, 3b opposite to the first side 3a are located at the second position in the first position. The reference temperature is the temperature of the lubricating oil at which the inner diameter of the bimetal orifice (1) begins to increase. That is, it means the temperature of the lubricating oil at which the first metal 2 and the second metal 3 start to expand, and can be preset by the operator. When the temperature of the lubricating oil exceeds a predetermined reference temperature, the first metal (2) expands to a first thermal expansion coefficient, and the second metal (3) can expand to a second thermal expansion coefficient. In this case, since the second thermal expansion coefficient is smaller than the first thermal expansion coefficient, the length of the first metal 2 expanded compared to the second metal 3 may be longer. Therefore, the other side 2b of the first metal 2 and the other side 3b of the second metal 3 may be oriented toward the first direction (direction of arrow D1, as shown in FIG. 3). That is, the other side 2b of the first metal 2 and the other side 3b of the second metal 3 may be located at the second position in the first position.

The inner diameter of the bimetallic orifice 1 can be increased if the other side 2b of the first metal 2 and the other side 3b of the second metal 3 are located at the second position. For example, when the other side 2b of the first metal 2 and the other side 3b of the second metal 3 are positioned in the second position from the first position, If a difference occurs, the inner diameter of the bimetallic orifice 1 can be increased by multiplying B (shown in FIG. 4) by A (shown in FIG. 4) by two times. Although not shown, the bimetallic orifice 1 may be formed on the other side of the bimetallic orifice 1 due to the difference between the first thermal expansion coefficient of the first metal 2 and the second thermal expansion coefficient of the second metal 3, 2b, and 3b are further moved toward the first direction (direction of arrow D1, as shown in FIG. 3), thereby further increasing the inner diameter. As the inner diameter increases, the supply amount of the lubricating oil supplied to the turbocharger can be increased. Accordingly, the bimetallic orifice 1 according to the present invention can increase the supply amount of the lubricating oil supplied to the turbocharger as the temperature of the lubricating oil increases during the operation in which the operation load of the engine is increased. Therefore, . Accordingly, the bimetal orifice 1 according to the present invention can prevent the turbocharger from being damaged or broken due to a low supply pressure of the lubricant during engine operation, thereby reducing the maintenance cost and replacement cost of the turbocharger.

Although not shown, the first metal 2 and the second metal 3 are arranged such that the other side (2b, 3b) located at the second position is in the first position when the temperature of the lubricating oil is a predetermined reference temperature Respectively. When the first metal (2) and the other side (2b, 3b) of the second metal (3) return from the second position to the first position, in a state where the temperature of the lubricating oil exceeds a predetermined reference temperature And may be lowered to the reference temperature. For example, the engine may be stopped when the engine is operated at a high load. The temperature of the lubricating oil is lowered by stopping the engine, and the expanded metal (2) and the second metal (3) can be contracted as the temperature of the lubricating oil is lowered. Accordingly, the length of the inner diameter of the bimetal orifice 1 can be reduced to A (shown in FIG. 4). When the inner diameter is reduced, the supply amount of the lubricating oil supplied to the turbocharger can be reduced. However, in this case, since the engine is in a stopped state, the problem of damage or breakage of the turbocharger may not occur.

Although not shown, the bimetallic orifice 1 according to the present invention is installed in a flow path for supplying lubricating oil to the apparatus, as well as the turbocharger, if it is a device for receiving lubricating oil, thereby controlling the flow rate of the lubricating oil supplied to the apparatus, Can be adjusted. In addition, the bimetal orifice 1 according to the present invention may be provided not only with lubricant but also with a fluid whose viscosity varies depending on the temperature, so that the supply amount of the fluid may be adjusted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

1: Bimetallic orifice for engine
2: first metal 2a: one side of the first metal
2b: the other side of the first metal 3: the second metal
3a: one side of the second metal 3b: the other side of the second metal

Claims (4)

A first metal having a first thermal expansion coefficient, one side of which is coupled to an inner surface of a transfer portion for providing a flow path for lubricating oil moving in a first direction toward a turbocharger for increasing an output of the engine; And
A second metal coupled to the first metal and having a second thermal expansion coefficient less than the first thermal expansion coefficient,
Wherein the first metal and the second metal are arranged such that when the temperature of the lubricating oil exceeds a predetermined reference temperature, the other side opposite to the one side coupled to the inner surface of the transferring portion is moved from the first position to the second position facing the first direction And the bimetal orifice for the engine is expanded. The method according to claim 1,
Wherein the first metal and the second metal each contract so that the other side of the first metal located at the second position is located at the first position when the temperature of the lubricant is a predetermined reference temperature. The method according to claim 1,
Wherein the first metal is one of iron (Fe) and iron-nickel (Fe-Ni) alloys. The method according to claim 1,
Wherein the second metal is one of copper (Cu), a copper-zinc (Cu-Zn) alloy, and a nickel-chromium-iron (Ni-Cr-Fe) alloy.
KR1020150181834A 2015-12-18 2015-12-18 Bimetal Orifice for Engine KR20170073788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150181834A KR20170073788A (en) 2015-12-18 2015-12-18 Bimetal Orifice for Engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150181834A KR20170073788A (en) 2015-12-18 2015-12-18 Bimetal Orifice for Engine

Publications (1)

Publication Number Publication Date
KR20170073788A true KR20170073788A (en) 2017-06-29

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Application Number Title Priority Date Filing Date
KR1020150181834A KR20170073788A (en) 2015-12-18 2015-12-18 Bimetal Orifice for Engine

Country Status (1)

Country Link
KR (1) KR20170073788A (en)

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