WO2019180806A1 - 排気用中空ポペットバルブ - Google Patents
排気用中空ポペットバルブ Download PDFInfo
- Publication number
- WO2019180806A1 WO2019180806A1 PCT/JP2018/010980 JP2018010980W WO2019180806A1 WO 2019180806 A1 WO2019180806 A1 WO 2019180806A1 JP 2018010980 W JP2018010980 W JP 2018010980W WO 2019180806 A1 WO2019180806 A1 WO 2019180806A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow
- shaft
- valve
- umbrella
- exhaust
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
- F01L3/14—Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/01—Absolute values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/02—Formulas
Definitions
- a shaft hollow valve for an engine has a hollow portion formed so as to have a constant inner diameter from the shaft portion to the inside of the umbrella portion as shown in Patent Document 1, or as shown in Patent Document 2.
- an umbrella hollow valve having a hollow part formed so as to follow the outer shape of the umbrella part inside the umbrella part.
- a shaft hollow valve such as Patent Document 1 has a constant inner diameter, so that the refrigerant is easy to move in the axial direction of the valve based on the axial movement of the valve, but the refrigerant is insufficiently loaded and the heat transfer allowable amount of the refrigerant is low. Depending on the limit, heat transfer from the valve to the refrigerant may be insufficient, and a sufficient cooling effect may not be obtained.
- the umbrella hollow valve like patent document 2 formed the hollow part of the shape so that the outer shape of the umbrella part might be imitated at the front-end
- the engine may be used only for a generator that supplies power to a traveling motor without being used as a driving source for traveling, and such an engine can only be rotated at a low and medium speed without rotating at a high speed.
- a generator that supplies power to a traveling motor without being used as a driving source for traveling
- an engine can only be rotated at a low and medium speed without rotating at a high speed.
- an exhaust hollow poppet valve that improves knock resistance and exhibits improved fuel efficiency by exhibiting an excellent cooling effect at low and medium speeds than at high speeds.
- the present invention provides a hollow poppet valve for exhaust that exhibits a cooling effect equivalent to or better than that of an umbrella hollow valve when the engine is rotated at low and medium speeds with a simple structure.
- An exhaust hollow poppet valve having a shaft portion and an umbrella portion that are integrated via a neck portion that increases in diameter toward the tip, and in which a refrigerant is loaded in a hollow portion formed from the umbrella portion to the shaft portion, the shaft The portion includes a first shaft portion on the base end side, and a second shaft portion that is integrated with the first shaft portion via the stepped portion and integrated with the neck portion, and the hollow portion includes the first shaft portion.
- the volume of the part increases and the amount of refrigerant loaded in the area exposed to the high temperature of the exhaust increases, increasing the allowable amount of heat transfer, allowing smooth heat transfer from the combustion chamber to the refrigerant, and high-speed vibration of the valve
- the refrigerant is less likely to remain on the inner wall of the second hollow portion by being swung in the axial direction of the valve in the second hollow portion having a constant inner diameter, and the smooth passage between the first hollow portion via the tapered portion or the curved portion is prevented. Movement is promoted.
- the second shaft portion is formed thicker than the first shaft portion.
- the second hollow portion has a shape in which a plurality of hollow portions having different inner diameters are sequentially connected from the base end portion to the distal end portion in descending order of the inner diameter.
- a hollow portion having a larger inner diameter is formed so as to follow the outer shape of the neck portion that increases in diameter toward the tip portion, and the refrigerant charging amount in the second hollow portion further increases.
- the plurality of hollow portions having different inner diameters are preferably formed so as to be continuous through a tapered portion or a curved portion, respectively.
- the exhaust hollow poppet valve has a face portion in which the umbrella portion comes into contact with the seat portion of the cylinder head when the valve is closed, and an axial length from a base end portion of the stepped portion to a distal end portion of the face portion is It is desirable that the length is shorter than the length in the axial direction from the tip of the valve guide opening of the cylinder head to the tip of the seat.
- the step part and the second shaft part do not interfere with the valve guide opening of the cylinder head when the hollow poppet valve is opened and closed during exhaust.
- the exhaust hollow poppet valve of the present application there is no decrease in strength of the portion exposed to high temperature, the amount of refrigerant loaded inside the portion exposed to high temperature is increased, the allowable amount of heat transfer of the refrigerant is increased, and the umbrella
- the efficiency of moving the refrigerant between the head portion and the shaft portion is improved, and the inner diameter of the first hollow portion is made smaller than that of the second hollow portion to reduce the sticking of the refrigerant near the shaft end portion.
- the second hollow portion can be easily formed because the shape of the second hollow portion is a straight hole having a constant inner diameter while exhibiting a cooling effect equivalent to or better than that of a conventional umbrella hollow valve during high-speed rotation.
- the exhaust hollow poppet valve of the present application by increasing the thickness of the part exposed to high temperature, the allowable amount of heat transfer of the second shaft portion itself is increased and heat transfer from the combustion chamber to the refrigerant is improved. This further improves the cooling effect of the valve.
- the second hollow portion can be easily formed, and the refrigerant inside the second hollow portion exposed to high temperature.
- the further increase in the loading amount further increases the allowable amount of refrigerant heat transfer.
- the second hollow portion can be easily formed, and the refrigerant inside the second hollow portion exposed to high temperature. Further increase in the loading amount further increases the allowable amount of heat transfer of the refrigerant and improves the cooling effect of the valve.
- the movement of the refrigerant in the second hollow portion is promoted, whereby the moving efficiency of the refrigerant between the umbrella portion and the shaft portion is further improved, and the cooling effect of the valve is improved.
- the volume of the second hollow portion and the thickness of the second shaft portion without causing the step portion and the second shaft portion to interfere with the valve guide opening of the cylinder head during the opening / closing operation of the valve. Therefore, heat transfer from the combustion chamber to the refrigerant is further improved.
- FIG. 3 is an axial sectional view of the exhaust hollow poppet valve according to the first embodiment.
- the axial direction sectional view showing the modification of the 2nd hollow part in a 1st embodiment.
- a first embodiment of the exhaust hollow poppet valve will be described with reference to FIG. 1, description will be made with the umbrella side of the exhaust hollow poppet valve as the distal end side and the shaft side as the proximal end side.
- the hollow poppet valve 1 for exhaust in the first embodiment shown in FIG. 1 has a shaft portion 2, a neck portion 3 and an umbrella portion 4 formed of a heat-resistant alloy having high heat resistance.
- the shaft portion 2 is formed by the first shaft portion 5, the step portion 6 and the second shaft portion 7.
- the second shaft portion 7 is integrated with the first shaft portion 5 via a stepped portion 6 that is tapered from the distal end side to the proximal end side and is formed in a convex curved shape.
- the diameter D2 is formed larger than the outer diameter D1 of the first shaft portion 5 as a whole by the step portion 6.
- the neck 3 is formed in a concave curved shape whose outer diameter gradually increases toward the tip, and is smoothly connected to the tip 7 a of the second shaft portion 7.
- the umbrella portion 4 has a tapered face portion 8 that extends from the proximal end side to the distal end side on the outer periphery, and the face portion 8 is connected to the distal end portion 3 a of the neck portion 3.
- the stepped portion 6 may be formed as a tapered portion that is tapered from the distal end side to the proximal end side.
- a hollow portion 9 that is coaxial with the central axis O of the exhaust hollow poppet valve 1 is formed at the center inside the shaft portion 2, the neck portion 3, and the umbrella portion 4.
- the hollow portion 9 is formed by the first hollow portion 10, the curved portion 11, and the second hollow portion 12.
- the first hollow portion 10 is formed inside the first shaft portion 5 of the shaft portion 2 so as to have a constant inner diameter
- the second hollow portion 12 is larger than the inner diameter d1 of the first hollow portion 10 and has a constant inner diameter.
- the second shaft portion 7, the neck portion 3, and the umbrella portion 4 are formed so as to have d2.
- the curved portion 11 has a concave curved shape that is tapered from the distal end side where the distal end inner diameter is d2 and the proximal end inner diameter is d1 to the proximal end portion, and the second hollow portion 12 is the curved portion 11. Is smoothly connected to the first hollow portion 10.
- the first hollow portion 10, the curved portion 11, and the second hollow portion 12 are formed around the central axis O of the exhaust hollow poppet valve 1 by excavation or the like from the bottom surface 4a side of the exhaust hollow poppet valve 1.
- the hollow portion 9 is closed by attaching a cap 13 formed of a heat-resistant alloy or the like by resistance bonding or the like in a state where a coolant such as metallic sodium is loaded.
- the curved portion 11 may be formed as a tapered portion that is tapered from the distal end side to the proximal end side.
- 1st axial part 5 is formed by cutting the outer periphery of the bar material made from a heat-resistant metal until it becomes the outer diameter D1.
- the thickness t ⁇ b> 1 of the first shaft portion 5 is formed to coincide with the thickness t ⁇ b> 2 of the second shaft portion 7. Even if the second shaft portion 7 is formed inside the second hollow portion 12 having a larger inner diameter than the first hollow portion 10 of the first shaft portion 5, the second shaft portion 7 has the same thickness as the first shaft portion 5. The effect of improving heat transferability by increasing the amount of the refrigerant 14 is exhibited.
- the second shaft portion 7, the neck portion 3, and the umbrella portion 4 that are provided inside the combustion chamber and the exhaust passage and exposed to high-temperature exhaust gas in the exhaust passage are provided.
- the inner diameter d2 of the hollow portion 12 is made larger than the inner diameter d1 of the first hollow portion 10, the volume of the second hollow portion 12 exposed to a high temperature is increased, the amount of refrigerant 14 loaded is increased, and the allowable amount of heat transfer is increased. By increasing the temperature, heat transfer from the combustion chamber to the refrigerant 14 is performed smoothly.
- the refrigerant 14 is swung back and forth along the central axis O of the valve inside the second hollow portion 12 having a constant inner diameter d2 when the exhaust hollow poppet valve 1 is vibrated at high speed.
- the efficiency of movement of the refrigerant 14 between the umbrella portion 4 and the shaft portion 2 is improved, so that it is equivalent to the conventional umbrella hollow valve at low and medium speed rotation of the engine.
- the second hollow portion 12 can be easily formed because the shape of the second hollow portion 12 is a straight hole having a constant inner diameter d2.
- FIG. 2 shows a modification of the second hollow portion 12 shown in the first embodiment.
- the second hollow portion 12 'shown in FIG. 2 includes a hollow portion A having an inner diameter d2, a hollow portion B having an inner diameter d21, and a hollow portion C having an inner diameter d22.
- the inner diameter d2 of the hollow portion A is the same as the inner diameter of the second hollow portion 12 in FIG.
- the hollow part B is formed inside the neck part 3, and the hollow part 3 is formed inside the umbrella part 4.
- the hollow portions A to C are formed so as to have a shape in which a plurality of hollow portions having different inner diameters from the base end portion to the distal end portion continue in order from the smallest inner diameter, and of the engine valve 1 ′. It is formed so as to be coaxial around the central axis O ′.
- the inner diameters of the hollow portions A to C are d2 ⁇ d21 ⁇ d22.
- the hollow portions A to C are preferably formed so as to be smoothly connected via convex curved portions a1 and a2 and a tapered portion (not shown) as shown in FIG.
- the connecting portions from the hollow portions A to C may be straight holes, but the movement of the refrigerant between the hollow portions A to C is promoted by being connected via a curved portion or a tapered portion.
- the second hollow portion 12 ′ forms a hollow portion 9 ′ together with the first hollow portion 10 and the curved portion 11, and the hollow portion 9 ′ is formed of a heat resistant alloy or the like in a state where a refrigerant such as metallic sodium is loaded.
- the cap 13 ' is closed by being attached by resistance bonding or the like.
- the second hollow portion 12 ′ is formed because the hollow portions A to C formed of straight holes each having different inner diameters d 2, d 21, and d 22 are formed in ascending order of the inner diameter.
- 2nd hollow part 12 'of this modification is divided into three from the hollow parts A to C as an example, 2nd hollow part 12' may reduce cost by dividing into two.
- the inner volume of the second hollow portion may be increased by dividing the shape into four or more and further following the shape of the neck or umbrella.
- the thickness t2 of the second shaft portion 7 is formed to be thicker than the thickness t1 of the first shaft portion 5 (that is, t2> t1).
- the allowable amount of heat transfer of the second shaft portion 7 itself increases, so that the heat transfer performance from the exhaust gas in the combustion chamber and the exhaust passage to the refrigerant 14 is further improved, thereby improving the cooling effect by the valve. .
- the exhaust hollow poppet valve 21 in the second embodiment shown in FIGS. 3 and 4 has the same outer shape as the exhaust hollow poppet valve 1 in the first embodiment, and is formed of a heat-resistant alloy or the like having high heat resistance.
- the shaft portion 22, the neck portion 23, and the umbrella portion 24 are provided.
- the shaft portion 22 is formed by the first shaft portion 25, the step portion 26, and the second shaft portion 27.
- the first shaft portion 25 is a solid body that has an inner diameter D3 that is the same as the main body portion 25a having a first hollow portion 30 that will be described later and the main body portion 25a to form the exhaust hollow poppet valve 21. It is formed by the shaft end portion 25b.
- the second shaft portion 27 is integrated with the main body portion 25a of the first shaft portion 25 through a tapered step portion 26 that is tapered from the distal end side to the proximal end side.
- D4 is formed larger than the outer diameter D3 of the first shaft portion 25 as a whole by the step portion 26.
- the stepped portion 26 may be formed as a convex curved portion that is tapered from the distal end side to the proximal end side.
- the neck portion 23 is formed in a concave curved shape in which the outer diameter gradually increases toward the tip, and is smoothly connected to the tip portion 27 a of the second shaft portion 27.
- the umbrella portion 24 has a tapered face portion 28 that spreads from the proximal end side to the distal end side on the outer periphery, and the face portion 28 is connected to the distal end portion 23 a of the neck portion 23.
- a hollow portion 29 that is coaxial with the central axis O1 of the exhaust hollow poppet valve 21 is formed at the center inside the shaft portion 22, the neck portion 23, and the umbrella portion 24.
- the hollow portion 29 is formed by the first hollow portion 30, the tapered portion 31, and the second hollow portion 32.
- the first hollow portion 30 is formed inside the body portion 25a of the first shaft portion 25 of the shaft portion 22 so as to have a constant inner diameter, and the second hollow portion 32 is larger than the inner diameter d3 of the first hollow portion 30. It is formed on the inner side of the second shaft portion 27, the neck portion 23 and the umbrella portion 24 so as to have a large and constant inner diameter d4.
- the tapered portion 31 may be formed as a concave curved curved portion that is tapered from the distal end side to the proximal end side.
- the tapered portion 31 has a shape that is tapered from the distal end side where the distal end inner diameter is d4 and the proximal end inner diameter is d3 to the proximal end portion, and the second hollow portion 32 is interposed via the tapered portion 31.
- the first hollow portion 30 is smoothly connected.
- the 2nd hollow part 32 is formed in the bottomed cylindrical shape which does not penetrate to the bottom face 24a side by the bottom part 32a integral with the umbrella part 24.
- the first hollow portion 30, the tapered portion 31, and the second hollow portion 32 have a neck portion and an umbrella portion that are the same shape as the neck portion 23 and the umbrella portion 24, and the main body portion 25a and the second hollow portion.
- a solid poppet valve having a total axial length of the shaft portion 27 is formed, and a circular hole having an inner diameter d4 is formed so as to have a bottom around the central axis O1 from the base end side of the solid poppet valve.
- the outer periphery on the base end side of the formed hollow poppet valve is drawn to form a circular hole with an inner diameter d3 connected to the base end side of the circular hole with an inner diameter d4 via a tapered portion 31.
- the main body 25a The second shaft portion 27, the first hollow portion 30 and the second hollow portion 32 are formed, the refrigerant 34 is loaded into the hollow portion 29, and finally the shaft end portion 25b is resistance-bonded to the base end portion 25c of the main body portion 25a. It is formed by, for example, axial joining.
- the thickness t4 of the second shaft portion 27 is thicker than the thickness t3 of the first shaft portion 25 (that is, t4> t3). Further, the heat transfer capability from the combustion chamber to the refrigerant 14 is further improved by increasing the allowable amount of heat transfer of the second shaft portion 27 itself, thereby improving the cooling effect by the valve.
- the second shaft portion 27 is formed with a second hollow portion 32 having an inner diameter larger than that of the first hollow portion 30 of the first shaft portion 25 on the inner side, and further formed thicker than the first shaft portion 5. Further, while maintaining the strength, the heat transfer tolerance and the effect of improving the heat transfer property due to the increase of the refrigerant 14 are exhibited.
- the second shaft portion 27 may be formed so that the thickness t4 of the second shaft portion 27 is the same as the thickness t3 of the first shaft portion 25, but the allowable amount of heat transfer of the second shaft portion 27 itself. In order to increase the thickness, it is desirable to form a thicker wall than the first shaft portion.
- the base end portion 32b of the second hollow portion 32 is connected to the second shaft portion. It is desirable that the base end portion 27b of the valve 27 is flush with the central axis O1 of the bulb.
- the second hollow portion 32 is exposed to the high temperature of the exhaust gas without reducing the strength of the stepped portion 26 by biting into the inside of the stepped portion 26 and reducing the thickness thereof. Since the maximum volume is formed inside the portion 27, the cooling effect by the valve is further improved.
- the second shaft portion 27, the neck portion 23, and the umbrella portion 24 that are exposed to high-temperature exhaust gas in the combustion chamber and the exhaust passage of the engine are provided inside the second portion.
- the inner diameter d4 of the hollow portion 32 is made larger than the inner diameter d3 of the first hollow portion 30, and the volume of the second hollow portion 32 is increased while increasing the allowable amount of heat transfer of the second shaft portion 27 exposed to high temperature.
- the refrigerant 34 is swung back and forth along the central axis O1 of the valve inside the second hollow portion 32 having a constant inner diameter d4 when the exhaust hollow poppet valve 1 is vibrated at high speed. Since it is difficult to remain on the inner wall, the taper is formed so as to taper toward the first shaft portion 25 on the base end side and the inner diameter of the connection point coincides with the first and second hollow portions (30, 32). Smooth movement between the first hollow portion 30 and the portion 31 is promoted.
- the moving efficiency of the refrigerant 34 between the umbrella portion 24 and the shaft portion 22 is improved, so that it is equivalent to the conventional umbrella hollow valve at low and medium speed rotation of the engine.
- the second hollow portion 32 can be easily formed because the shape of the second hollow portion 32 is a straight hole having a constant inner diameter d4.
- FIG. 4 shows the exhaust hollow poppet valve 21 of the second embodiment that is installed in the cylinder head 40 and moves forward and backward between the combustion chamber 41 and the exhaust passage 42 when opening and closing based on exhaust.
- the cylinder head 40 is provided with an exhaust passage 42 that opens toward the valve guide 40 a and the combustion chamber 41.
- the valve guide 40 a is provided with a valve insertion hole 40 b in which the shaft portion 22 of the exhaust hollow poppet valve 21 is slidably contacted, and the tip of the valve insertion hole 40 b opens into the exhaust passage 42.
- the shaft portion 22 of the exhaust hollow poppet valve 21 urged by the valve spring 43 in the valve closing direction is held in the valve insertion hole 40b, and advances and retreats.
- the exhaust hollow poppet valve 21 slides in the distal direction along the central axis O1 when the valve is opened, and the face portion 28 of the umbrella 24 is closed by the urging force of the valve spring 43 when the valve is closed.
- the cylinder head 40 is formed so as to come into contact with the seat surface 44a of the seat portion 44 of the cylinder head 40.
- the length L1 in the direction along the central axis O1 from the proximal end portion 26a of the step portion 26 to the distal end portion 28a of the face portion 28 is used. Is preferably shorter than the axial length L2 from the most distal end portion 40d of the valve guide opening 40c of the cylinder head 40 to the tip end portion 44b of the seat portion 44, as shown in FIGS.
- the length L3 in the direction along the central axis O from the base end portion 6a of the step portion 6 to the distal end portion 8a of the face portion 8 is the exhaust hollow poppet valve 1. 3 is formed to be shorter than the axial length L2 from the most distal end portion 40d of the valve guide opening 40c to the front end portion of the seat portion. It is desirable
- the base end portion (6a, 26a) of the stepped portion (6, 26) is the forefront of the valve guide opening of the cylinder head when the valve is closed. Since the hollow poppet valve (1, 21) is opened and closed during exhaust, the stepped portions (6, 26) and the second shaft portions (7, 27) are opened in the valve guide opening of the cylinder head 40 because it is located below the portion 40d. It does not interfere with the portion 40c. As a result, in the hollow poppet valve (1, 21), the volume of the second hollow portion (12, 32) and the wall thickness (t2, t4) of the second shaft portion (7, 27) can be further increased. Heat transfer from the chamber to the refrigerant is further improved.
- FIG. 5A is a graph relating to the center of the bottom surface 24a of the valve
- FIG. 5B is a graph relating to the neck portion 23 of the valve.
- the horizontal axis indicates the number of revolutions (rpm) of the valve
- the vertical axis indicates the temperature (° C.)
- the triangular line indicates the temperature of a conventional umbrella hollow valve with refrigerant as in Patent Document 2
- the square line indicates The temperature of the hollow valve
- the bottom surface temperature of the umbrella portion of the refrigerant-containing hollow valve in the present embodiment is the same as that of the conventional refrigerant-containing umbrella hollow valve when the engine speed is about 3500 rpm.
- the bottom temperature of the hollow valve in this embodiment is slightly higher than that of a conventional umbrella hollow valve when the engine rotates at a high speed exceeding about 3500 rpm, but when the engine rotates at a low and medium speed at a rotational speed of 3500 rpm or less. , Lower than the conventional umbrella hollow valve.
- the neck temperature of the engine valve in the present embodiment is equal to that of the conventional umbrella hollow valve when the engine speed is 3000rpm. Further, the neck temperature of the engine valve in this embodiment is slightly higher than that of the conventional umbrella hollow valve when the engine speed exceeds about 3000 rpm, but the engine is at a low speed of 3000 rpm or less. When rotated, the bottom surface temperature of the hollow bulb in the present embodiment is suppressed lower than that of the conventional umbrella hollow bulb.
- the conventional refrigerant hollow umbrella valve exhibits an excellent cooling effect during high-speed rotation of the engine
- the exhaust hollow poppet valve of the present embodiment is It can be said that knocking resistance is improved by contributing to an improvement in fuel consumption by exhibiting an excellent cooling effect equivalent to or higher than that of an umbrella hollow valve during low and medium speed rotation of the engine.
- Metal sodium generally used as a refrigerant for hollow valves has a melting point of 98 ° C. Since the hollow valve containing refrigerant that receives heat from the combustion chamber when the engine rotates at low and medium speeds does not reach a higher temperature than during high-speed rotation, metallic sodium loaded as a refrigerant in the hollow portion of the conventional hollow valve is placed in the combustion chamber. Because it is not exposed to the combustion chamber from the exposed high temperature umbrella or neck inside region, it is cooled to below the melting point when it moves to the region near the shaft end where the temperature is low, and is fixed to the region near the shaft end.
- the inner diameter of the first hollow portion 10 near the shaft end portion is smaller than the inner diameter of the second hollow portion 12, and even if it is fixed to the region near the shaft end portion. It is considered that the temperature of the valve is reduced even when the engine is operating in the low / medium speed rotation amount region because the amount of the refrigerant to be reduced is reduced and the deterioration of the thermal attractiveness is reduced.
- the exhaust hollow poppet valve of the present embodiment is the most excellent cooling effect when used for an engine that operates only in a low and medium speed rotation region such as a power generation dedicated engine used for a drive motor of an electric vehicle. It can be said that it demonstrates.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lift Valve (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
2 軸部
3 首部
4 傘部
5 第1軸部
6 段差部
7 第2軸部
8 フェース部
9 中空部
10 第1中空部
11 湾曲部
12 第2中空部
14 冷媒
21 排気用中空ポペットバルブ
22 軸部
23 首部
24 傘部
25 第1軸部
26 段差部
27 第2軸部
28 フェース部
29 中空部
30 第1中空部
31 テーパー部
32 第2中空部
34 冷媒
40 シリンダヘッド
40c バルブガイド開口部
40d 最先端部
44 シート部
L1、L3 段差部の基端部からフェース部の先端部までの軸方向長さ
L2 バルブガイド開口部の最先端部からフェース部の先端部までの軸方向長さ
Claims (5)
- 先端に向かって増径する首部を介して一体化される軸部と傘部を有し、傘部から軸部にかけて形成された中空部に冷媒を装填された排気用中空ポペットバルブにおいて、
前記軸部は、
基端側の第1軸部と、段差部を介して第1軸部に一体化されると共に首部に一体化される第2軸部を有し、
前記中空部は、
第1軸部の内側に形成される第1中空部と、
第1中空部よりも大きく一定の内径を有するように第2軸部、首部及び傘部の内側に形成され、テーパー部または湾曲部を介して第1中空部に連続するように形成された第2中空部と、を備えたことを特徴とする排気用中空ポペットバルブ。 - 前記第2軸部は、第1軸部よりも厚肉に形成されたことを特徴とする請求項1に記載の排気用中空ポペットバルブ。
- 前記第2中空部は、基端部から先端部にかけて内径の異なる複数の中空部を内径の小さいものから順に連続させた形状を有することを特徴とする、請求項1または2に記載の排気用中空ポペットバルブ。
- 内径の異なる前記複数の中空部は、それぞれテーパー部または湾曲部を介して連続することを特徴とする、請求項3に記載の排気用中空ポペットバルブ。
- 前記傘部は、弁閉時にシリンダヘッドのシート部に当接するフェース部を有し、
前記段差部の基端部からフェース部の先端部までの軸方向長さが、シリンダヘッドのバルブガイド開口部の最先端部からシート部の先端部までの軸方向長さよりも短く形成されたことを特徴とする、請求項1から4のうちいずれかに記載の排気用中空ポペットバルブ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18910259.3A EP3667036B1 (en) | 2018-03-20 | 2018-03-20 | Hollow exhaust poppet valve |
CN201880047096.3A CN110914520B (zh) | 2018-03-20 | 2018-03-20 | 排气用中空提升阀 |
JP2019560411A JP6653050B1 (ja) | 2018-03-20 | 2018-03-20 | 排気用中空ポペットバルブ |
KR1020197035912A KR102285017B1 (ko) | 2018-03-20 | 2018-03-20 | 배기용 중공 포핏 밸브 |
PCT/JP2018/010980 WO2019180806A1 (ja) | 2018-03-20 | 2018-03-20 | 排気用中空ポペットバルブ |
US17/026,175 US11300018B2 (en) | 2018-03-20 | 2020-09-19 | Hollow exhaust poppet valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2018/010980 WO2019180806A1 (ja) | 2018-03-20 | 2018-03-20 | 排気用中空ポペットバルブ |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/026,175 Continuation-In-Part US11300018B2 (en) | 2018-03-20 | 2020-09-19 | Hollow exhaust poppet valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019180806A1 true WO2019180806A1 (ja) | 2019-09-26 |
Family
ID=67986808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/010980 WO2019180806A1 (ja) | 2018-03-20 | 2018-03-20 | 排気用中空ポペットバルブ |
Country Status (6)
Country | Link |
---|---|
US (1) | US11300018B2 (ja) |
EP (1) | EP3667036B1 (ja) |
JP (1) | JP6653050B1 (ja) |
KR (1) | KR102285017B1 (ja) |
CN (1) | CN110914520B (ja) |
WO (1) | WO2019180806A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2021199190A1 (ja) * | 2020-03-30 | 2021-10-07 | ||
US11536167B2 (en) | 2018-11-12 | 2022-12-27 | Nittan Valve Co., Ltd. | Method for manufacturing engine poppet valve |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11530629B2 (en) * | 2020-06-26 | 2022-12-20 | GM Global Technology Operations LLC | Method to attach copper alloy valve inserts to aluminum cylinder head |
US11982212B2 (en) * | 2021-03-16 | 2024-05-14 | Fuji Oozx Inc. | Hollow engine valve and production method thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01173305U (ja) * | 1988-05-18 | 1989-12-08 | ||
JPH03242408A (ja) * | 1990-02-16 | 1991-10-29 | Aisan Ind Co Ltd | 中空エンジンバルブの製造方法 |
JPH03258903A (ja) * | 1990-03-07 | 1991-11-19 | Hino Motors Ltd | 中空バルブおよびそれの製造方法 |
JPH0476907U (ja) * | 1990-11-19 | 1992-07-06 | ||
JPH04314906A (ja) * | 1991-04-11 | 1992-11-06 | Fuji Oozx Kk | 内燃機関用中空弁 |
JPH05141214A (ja) | 1991-11-21 | 1993-06-08 | Mitsubishi Heavy Ind Ltd | エンジン用ナトリウム封入バルブ |
JP2013155676A (ja) | 2012-01-30 | 2013-08-15 | Mitsubishi Heavy Ind Ltd | 中空エンジンバルブの製造方法 |
Family Cites Families (213)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734008A (en) | 1956-02-07 | Method of making heat treating and hardening valves | ||
FR490855A (fr) | 1917-07-17 | 1919-05-13 | Domestic Engineering Company | Perfectionnements apportés aux soupapes de moteurs |
US1356311A (en) | 1919-05-22 | 1920-10-19 | John J Reilly | Machine for making nut-blanks |
US1402720A (en) | 1919-10-11 | 1922-01-03 | Charles E Thompson | Centering device |
US1414997A (en) | 1920-09-09 | 1922-05-02 | Zinn Henry John | Cutlery |
US1670965A (en) | 1923-06-09 | 1928-05-22 | Sam D Heron | Cooling of exhaust valves of internal-combustion engines |
US1714690A (en) | 1926-07-01 | 1929-05-28 | Doherty Res Co | Valve |
US1727621A (en) | 1928-02-18 | 1929-09-10 | Gen Motors Corp | Exhaust valve |
US1809201A (en) | 1929-03-23 | 1931-06-09 | Higgins John Howard | Exhaust valve |
US1914340A (en) | 1929-08-22 | 1933-06-13 | Holzwarth Gas Turbine Co | Hydraulically controlled transfer valve |
US1984728A (en) | 1931-02-19 | 1934-12-18 | Thompson Prod Inc | Method of making hollow head valves |
US2009996A (en) | 1931-10-20 | 1935-08-06 | Jr Louis W Gering | Method of making valves |
US1984751A (en) | 1932-11-28 | 1934-12-18 | Thompson Prod Inc | Method of making hollow valves |
US2086420A (en) | 1935-08-28 | 1937-07-06 | Eaton Mfg Co | Engine valve |
US2183254A (en) | 1937-06-28 | 1939-12-12 | Eaton Mfg Co | Valve structure and method of forming |
US2119042A (en) | 1937-12-20 | 1938-05-31 | Eaton Mfg Co | Valve |
US2238628A (en) | 1939-05-10 | 1941-04-15 | Eaton Mfg Co | Valve construction |
DE718717C (de) | 1939-12-09 | 1942-03-19 | Josef Ruhrmann Dr Ing | Verfahren zur Herstellung von Tellerventilen fuer Brennkraftmaschinen |
US2276552A (en) | 1939-12-18 | 1942-03-17 | Jr John Weber | Self-shank button chuck |
US2274667A (en) | 1940-03-01 | 1942-03-03 | Thompson Prod Inc | Hollow cast metal valve |
US2411764A (en) | 1940-08-30 | 1946-11-26 | Thompson Prod Inc | Method of manufacturing ribbed dome hollow head valves |
US2280758A (en) | 1941-03-07 | 1942-04-21 | Eaton Mfg Co | Hollow valve structure |
US2450803A (en) | 1942-01-24 | 1948-10-05 | Thompson Prod Inc | Method of making sheathed valves |
US2403926A (en) | 1942-01-24 | 1946-07-16 | Thompson Prod Inc | Sheathed valve |
US2392175A (en) | 1942-03-11 | 1946-01-01 | Thompson Prod Inc | Process of making hollow valves |
US2627259A (en) | 1942-06-24 | 1953-02-03 | Gen Motors Corp | Valve |
US2365285A (en) | 1942-07-13 | 1944-12-19 | Thompson Prod Inc | Method of making evacuated valves |
US2369063A (en) | 1942-07-13 | 1945-02-06 | Thompson Prod Inc | Evacuated coolant containing valve |
US2407561A (en) | 1943-05-06 | 1946-09-10 | Allegheny Ludlum Steel | Hollow valve for internalcombustion engines |
US2371548A (en) | 1943-12-06 | 1945-03-13 | Thomas F Saffady | Valve |
US2471937A (en) | 1944-01-24 | 1949-05-31 | Thompson Prod Inc | Method of making hollow poppet valves |
US2410190A (en) | 1944-02-04 | 1946-10-29 | Thompson Prod Inc | Method of making plug type hollow poppet valves |
US2452628A (en) | 1944-08-25 | 1948-11-02 | Thompson Prod Inc | Method of making hollow poppet valves |
US2435948A (en) | 1944-09-08 | 1948-02-10 | Thompson Prod Inc | Method of preparing composite poppet valves |
US2439240A (en) | 1945-01-18 | 1948-04-06 | Thompson Prod Inc | Braced head dome valve |
US2453642A (en) | 1947-08-18 | 1948-11-09 | Roy Emil | Automatic chuck |
US2544605A (en) | 1947-11-13 | 1951-03-06 | Mallory Marion | Internal-combustion engine |
US2636255A (en) | 1950-01-28 | 1953-04-28 | Jeudy Gabriel Jeudi Dit | Process for the production of hollow valves |
US2668719A (en) | 1950-10-06 | 1954-02-09 | Charles F Harmon | Milling attachment for lathe |
US2736560A (en) | 1951-01-30 | 1956-02-28 | Thompson Prod Inc | Spindle and collet assembly |
US2682261A (en) * | 1951-05-08 | 1954-06-29 | Thompson Prod Inc | Hollow stem poppet valve |
US2798831A (en) | 1952-07-30 | 1957-07-09 | Du Pont | Coating protected alkali metal product and process |
US2731708A (en) | 1952-10-31 | 1956-01-24 | Teves Kg Alfred | Process for manufacture of hollow poppet valves especially for internal-combustion engines |
US2698754A (en) | 1953-10-30 | 1955-01-04 | Bernstein Michael | Collet closer |
USRE24903E (en) | 1955-05-11 | 1960-12-06 | Collet pads | |
US2948052A (en) | 1956-06-30 | 1960-08-09 | Teves Kg Alfred | Method of manufacturing hollow poppet valves for internal combustion engines |
US2949907A (en) * | 1957-12-19 | 1960-08-23 | Thompson Ramo Wooldridge Inc | Coolant-filled poppet valve and method of making same |
US2966363A (en) | 1958-11-14 | 1960-12-27 | Hendrickson Machine Company | Chuck assembly |
US3132871A (en) | 1961-10-09 | 1964-05-12 | Rubbermaid Inc | Chuck |
US3395927A (en) | 1965-04-19 | 1968-08-06 | Houdaille Industries Inc | Tool holder and tool assembly |
US3313277A (en) | 1965-06-08 | 1967-04-11 | Adolfsson Rune Gerren | Liquid cooled valve for internal combustion engines |
US3426741A (en) | 1968-04-03 | 1969-02-11 | Thomas E Haagen | Diesel engine poppet valve |
US3659863A (en) | 1969-10-07 | 1972-05-02 | Buttner Horace Judson | Automatic drill chuck and split collet |
DE1960331A1 (de) | 1969-12-02 | 1971-06-03 | Porsche Kg | Kegelventil,insbesondere fuer Brennkraftmaschinen |
BE790453A (fr) | 1971-10-26 | 1973-02-15 | Brooks Reginald G | Fabrication d'articles en metal |
DE2240572A1 (de) | 1972-08-18 | 1974-02-28 | Maschf Augsburg Nuernberg Ag | Mit waermeleitfluessigkeit gefuelltes ventil |
FR2329848A1 (fr) | 1975-10-30 | 1977-05-27 | Semt | Soupape du type en champignon refroidie par circulation d'un fluide refrigerant |
JPS5273306U (ja) | 1975-11-29 | 1977-06-01 | ||
JPS52111813U (ja) | 1976-02-21 | 1977-08-25 | ||
DE2727006A1 (de) | 1977-06-15 | 1978-12-21 | Kloeckner Humboldt Deutz Ag | Tellerventil mit innenkuehlung, insbesondere auslassventil fuer hubkolbenbrennkraftmaschinen |
US4300492A (en) | 1978-05-22 | 1981-11-17 | Eaton Corporation | Thermal barrier valve |
US4362134A (en) | 1978-05-22 | 1982-12-07 | Eaton Corporation | Shielded valve |
JPS5525679U (ja) | 1978-08-09 | 1980-02-19 | ||
US4191558A (en) | 1978-12-26 | 1980-03-04 | Rockwell International Corporation | Sodium purification apparatus and method |
US4351292A (en) | 1980-10-03 | 1982-09-28 | Eaton Corporation | Poppet valve shield |
US4346870A (en) | 1980-11-26 | 1982-08-31 | Eaton Corporation | Thermal barrier for poppet valve |
JPS5923856A (ja) | 1982-07-28 | 1984-02-07 | Nippon Piston Ring Co Ltd | 複合焼結バルブシ−ト |
JPS6049207U (ja) | 1983-09-14 | 1985-04-06 | 日産自動車株式会社 | バルブ装置 |
JPS6087314U (ja) | 1983-11-18 | 1985-06-15 | 川崎重工業株式会社 | 内燃機関の排気弁装置 |
JPH0233848B2 (ja) | 1984-01-11 | 1990-07-31 | Toyota Jidosha Kk | Koontaimamoseibarubushiito |
JPS6184347A (ja) | 1984-09-25 | 1986-04-28 | Honda Motor Co Ltd | 内燃機関用中空弁 |
JPH0223767Y2 (ja) | 1984-12-18 | 1990-06-28 | ||
FR2585964B1 (fr) | 1985-08-12 | 1987-10-30 | Commissariat Energie Atomique | Piege froid pour eliminer les impuretes d'un metal liquide pollue |
JP2522241B2 (ja) | 1985-09-06 | 1996-08-07 | 石川島播磨重工業株式会社 | ポペット形弁の温度制御装置 |
JPS62102806U (ja) | 1985-12-18 | 1987-06-30 | ||
DE3600967C1 (de) | 1986-01-15 | 1987-05-21 | Tiefbohrtechnik Gmbh Tbt | Tiefbohrmaschine |
JPS6333167A (ja) | 1986-07-28 | 1988-02-12 | Nippon Kokan Kk <Nkk> | 滴下式鋳造方法 |
US4762447A (en) | 1986-09-23 | 1988-08-09 | Optima Industries, Inc. | Dual-plane high-speed collet |
JPS63109207A (ja) | 1986-10-28 | 1988-05-13 | Fuji Valve Co Ltd | 中空エンジンバルブの製造方法 |
US4741080A (en) | 1987-02-20 | 1988-05-03 | Eaton Corporation | Process for providing valve members having varied microstructure |
JPS63264237A (ja) | 1987-04-22 | 1988-11-01 | Aisan Ind Co Ltd | 中空バルブ素材の製造方法 |
JPS643007U (ja) * | 1987-06-25 | 1989-01-10 | ||
JPS6483676A (en) | 1987-09-28 | 1989-03-29 | Toyota Motor Corp | Wear resistant al alloy member |
JPH01173417U (ja) | 1988-05-24 | 1989-12-08 | ||
JPH025704A (ja) * | 1988-06-24 | 1990-01-10 | Hino Motors Ltd | エンジン用吸排気バルブ及びその製造方法 |
JPH02124204A (ja) | 1988-11-02 | 1990-05-11 | N T Tool Kk | 工具取付構造 |
JP2670529B2 (ja) | 1989-06-14 | 1997-10-29 | フジオーゼックス株式会社 | 中空エンジンバルブヘの金属ナトリウム注入方法及びその装置 |
JPH0323607U (ja) | 1989-07-17 | 1991-03-12 | ||
JPH0755281Y2 (ja) | 1989-09-29 | 1995-12-20 | 富士バルブ株式会社 | 熱伝達の良好な内燃機関用冷却弁 |
JP2715293B2 (ja) | 1989-11-30 | 1998-02-18 | 愛三工業株式会社 | 傘表切削用保持装置 |
US5077876A (en) | 1990-01-05 | 1992-01-07 | Coldstream | Spindle assembly for a single or a multiple spindle machine |
JPH0465907U (ja) | 1990-10-08 | 1992-06-09 | ||
JP2832757B2 (ja) | 1990-12-28 | 1998-12-09 | フジオーゼックス株式会社 | 中空弁への金属ナトリウムの挿入装置 |
JPH04272413A (ja) | 1991-02-27 | 1992-09-29 | Mitsubishi Heavy Ind Ltd | 金属ナトリウムの充填方法 |
JP2789390B2 (ja) | 1991-03-25 | 1998-08-20 | フジオーゼックス株式会社 | 内燃機関用中空弁 |
JPH04311611A (ja) | 1991-04-09 | 1992-11-04 | Aisan Ind Co Ltd | セラミックコーティングエンジンバルブ |
JPH0571316A (ja) | 1991-05-21 | 1993-03-23 | Mitsubishi Materials Corp | 伝熱部材 |
JP3018260B2 (ja) | 1991-08-02 | 2000-03-13 | フジオーゼックス株式会社 | 内燃機関用中空弁 |
US5168843A (en) | 1991-12-17 | 1992-12-08 | Franks James W | Poppet valve for an internal combustion engine |
US5297746A (en) | 1992-02-06 | 1994-03-29 | Nelmor Company, Inc. | Granulator knife |
US5458314A (en) | 1993-04-01 | 1995-10-17 | Eaton Corporation | Temperature control in an ultra light engine valve |
US5413073A (en) | 1993-04-01 | 1995-05-09 | Eaton Corporation | Ultra light engine valve |
US5346184A (en) | 1993-05-18 | 1994-09-13 | The Regents Of The University Of Michigan | Method and apparatus for rapidly solidified ingot production |
US5381847A (en) | 1993-06-10 | 1995-01-17 | Olin Corporation | Vertical casting process |
US5649358A (en) | 1993-07-20 | 1997-07-22 | Yamaha Hatsudoki Kabushiki Kaisha | Method of making a valve seat |
US5358212A (en) | 1993-10-08 | 1994-10-25 | Copes-Vulcan, Inc. | Poppet valve having external adjustment for a flow restrictor |
JPH07204909A (ja) | 1994-01-17 | 1995-08-08 | Mic Eng:Kk | 両面チャック |
JPH07279627A (ja) | 1994-04-07 | 1995-10-27 | Yamaha Motor Co Ltd | 圧入型バルブシート |
KR960023080U (ko) * | 1994-12-19 | 1996-07-20 | 엔진용 내부 냉각밸브 | |
JPH08176752A (ja) | 1994-12-26 | 1996-07-09 | Aichi Steel Works Ltd | 冷鍛性に優れたマルテンサイト系耐熱鋼 |
JP3380081B2 (ja) | 1995-03-13 | 2003-02-24 | ヤマハ発動機株式会社 | バルブシート |
JP3394363B2 (ja) | 1995-06-28 | 2003-04-07 | ヤマハ発動機株式会社 | エンジン用シリンダヘッド |
US5611306A (en) | 1995-08-08 | 1997-03-18 | Fuji Oozx Inc. | Internal combustion engine valve |
JPH09184404A (ja) * | 1995-12-28 | 1997-07-15 | Fuji Oozx Inc | 内燃機関用中空弁 |
DE29612743U1 (de) | 1996-07-23 | 1997-11-27 | Eugen Fahrion GmbH & Co., 73667 Kaisersbach | Spannfutter |
US5823158A (en) | 1997-03-04 | 1998-10-20 | Trw Inc. | Engine valve and method for making the same |
US5771852A (en) | 1997-03-04 | 1998-06-30 | Trw Inc. | Poppet valve with embossed neck structure |
JPH1132525A (ja) | 1997-07-17 | 1999-02-09 | Iseki & Co Ltd | 農作業機の旋回操作装置 |
JPH1162525A (ja) | 1997-08-07 | 1999-03-05 | Fuji Oozx Inc | 内燃機関用バルブ及びその製造方法 |
EP0911493A3 (en) | 1997-10-21 | 2000-04-12 | Eaton Corporation | Improved tip structures for an ultra light engine valve |
DE19804053A1 (de) * | 1998-02-03 | 1999-08-05 | Mwp Mahle J Wizemann Pleuco Gm | Leichtbauventil |
US6105261A (en) | 1998-05-26 | 2000-08-22 | Globix Technologies, Inc. | Self sharpening blades and method for making same |
DE19826885A1 (de) | 1998-06-17 | 1999-12-23 | Bosch Gmbh Robert | Werkstückträger, insbesondere zur Aufnahme runder oder symmetrischer Formteile |
JP3457888B2 (ja) | 1998-07-31 | 2003-10-20 | 伊佐雄 白柳 | ポペット弁の弁体 |
US6086652A (en) | 1998-12-29 | 2000-07-11 | Uop Llc | Method and apparatus for initial purification of liquid metal heat exchange fluid |
US6378543B1 (en) | 1999-02-12 | 2002-04-30 | Nittan Valve Co., Ltd. | Hollow poppet valve and the method for manufacturing the same |
US6263849B1 (en) | 1999-07-20 | 2001-07-24 | Eaton Corporation | Ultra light engine valve and method of welding cap thereto |
JP4842420B2 (ja) | 1999-09-28 | 2011-12-21 | トヨタ自動車株式会社 | 冷却液、冷却液の封入方法および冷却システム |
JP2001323323A (ja) | 2000-05-12 | 2001-11-22 | Aichi Steel Works Ltd | 自動車用エンジンバルブの製造方法 |
US6679478B2 (en) | 2000-07-17 | 2004-01-20 | Nittan Valve Co., Ltd. | Hollow poppet valve and method for manufacturing the same |
US6688207B2 (en) | 2001-01-12 | 2004-02-10 | Delaware Diamond Knives, Inc. | Dual blade cleaver |
JP3731153B2 (ja) | 2001-03-29 | 2006-01-05 | 兼房株式会社 | 耐摩耗部品の接合層保護構造 |
DE10117513A1 (de) | 2001-04-07 | 2002-10-17 | Volkswagen Ag | Brennkraftmaschine mit Direkteinspritzung |
JP2003103355A (ja) | 2001-09-26 | 2003-04-08 | Hitachi Metals Ltd | 鍛造用鋼塊の製造方法 |
JP3928782B2 (ja) | 2002-03-15 | 2007-06-13 | 帝国ピストンリング株式会社 | バルブシート用焼結合金の製造方法 |
JP2003305524A (ja) | 2002-04-09 | 2003-10-28 | Fuji Oozx Inc | エンジンバルブの製造方法 |
JP2003307105A (ja) | 2002-04-12 | 2003-10-31 | Fuji Oozx Inc | エンジンバルブ |
JP2004106109A (ja) | 2002-09-18 | 2004-04-08 | Olympus Corp | 旋削加工方法、旋削加工装置およびワーク把持機構 |
DE10255447A1 (de) | 2002-11-28 | 2004-06-24 | Daimlerchrysler Ag | Ventilsitz und Verfahren zur Herstellung eines Ventilsitzes |
JP4018581B2 (ja) | 2003-03-28 | 2007-12-05 | カルソニックカンセイ株式会社 | 燃料電池冷却システムおよびその冷却液劣化防止方法 |
US6912984B2 (en) | 2003-03-28 | 2005-07-05 | Eaton Corporation | Composite lightweight engine poppet valve |
JP2004306204A (ja) | 2003-04-08 | 2004-11-04 | Mitsubishi Rayon Co Ltd | 光ファイバ切断工具 |
JP4227551B2 (ja) | 2004-03-30 | 2009-02-18 | 株式会社スギノマシン | ワーク回転装置 |
JP4368245B2 (ja) | 2004-05-17 | 2009-11-18 | 株式会社リケン | 硬質粒子分散型鉄基焼結合金 |
JP4373287B2 (ja) | 2004-06-15 | 2009-11-25 | 株式会社リケン | 二層構造鉄基焼結合金製バルブシート |
JP2006097499A (ja) | 2004-09-28 | 2006-04-13 | Toyota Motor Corp | 内燃機関用中空弁 |
JP2006097498A (ja) | 2004-09-28 | 2006-04-13 | Toyota Motor Corp | 内燃機関用中空弁 |
JP2006183528A (ja) | 2004-12-27 | 2006-07-13 | Mitsubishi Materials Corp | バルブシート並びに粉末成形装置および圧粉体の製造方法 |
DE102005005041A1 (de) | 2005-02-03 | 2006-08-10 | Märkisches Werk GmbH | Ventil zur Steuerung des Gasaustauschs, insbesondere bei Verbrennungsmotoren |
JP2006274917A (ja) | 2005-03-29 | 2006-10-12 | Sgg Kenkyusho:Kk | 中空ポペット弁の製造方法 |
US7296454B2 (en) | 2005-08-03 | 2007-11-20 | Showa Denko K K | Upsetting method and upsetting apparatus |
WO2007057946A1 (ja) | 2005-11-15 | 2007-05-24 | Nittan Valve Co., Ltd. | 冷媒入り中空ポペットバルブおよびその製造方法 |
JP2007285186A (ja) | 2006-04-14 | 2007-11-01 | Suncall Corp | バルブアッセンブリ |
US7311068B2 (en) | 2006-04-17 | 2007-12-25 | Jason Stewart Jackson | Poppet valve and engine using same |
JP2008014237A (ja) | 2006-07-06 | 2008-01-24 | Toyota Motor Corp | 内燃機関用中空バルブ及びバルブ機構 |
JP2008088815A (ja) | 2006-09-29 | 2008-04-17 | Sgg Kenkyusho:Kk | 中空ポペット弁とその製造方法 |
JP4719139B2 (ja) | 2006-12-05 | 2011-07-06 | トヨタ自動車株式会社 | 中空バルブ |
CH704568B1 (de) | 2007-06-15 | 2012-09-14 | Ferag Ag | Schneideinrichtung und Schneidverfahren für Druckprodukte. |
JP2009013935A (ja) | 2007-07-06 | 2009-01-22 | Toyota Motor Corp | 内燃機関用中空バルブ |
US20090206559A1 (en) | 2008-02-14 | 2009-08-20 | Bill Nguyen | Eccentric collet chuck for CNC lathe adjustment the concentricity and misalignment |
JP5108630B2 (ja) | 2008-05-27 | 2012-12-26 | 兼房株式会社 | 平板状刃物 |
JP4390291B1 (ja) * | 2008-09-18 | 2009-12-24 | 株式会社 吉村カンパニー | 中空エンジンバルブの弁傘部の製造方法及び中空エンジンバルブ |
KR101123658B1 (ko) | 2008-10-10 | 2012-03-22 | 니탄 밸브 가부시키가이샤 | 중공 포핏밸브 및 그 제조방법 |
JP5696351B2 (ja) | 2009-04-15 | 2015-04-08 | トヨタ自動車株式会社 | エンジン燃焼室構造 |
US20100269778A1 (en) | 2009-04-22 | 2010-10-28 | Gm Global Technology Operations, Inc. | Cylinder head assembly for an internal combustion engine and method of making the same |
JP2011157845A (ja) | 2010-01-29 | 2011-08-18 | Nippon Piston Ring Co Ltd | 冷却能に優れた内燃機関用バルブシート |
JP5574752B2 (ja) | 2010-02-26 | 2014-08-20 | 三菱重工業株式会社 | 中空エンジンバルブの製造方法 |
JP5404472B2 (ja) | 2010-02-26 | 2014-01-29 | 三菱重工業株式会社 | 中空エンジンバルブの製造方法 |
JP2011179327A (ja) | 2010-02-26 | 2011-09-15 | Mitsubishi Heavy Ind Ltd | 金属ナトリウム封入エンジンバルブの製造方法 |
JP5297402B2 (ja) | 2010-02-26 | 2013-09-25 | 三菱重工業株式会社 | 金属ナトリウム封入エンジンバルブの製造方法 |
JP2011184260A (ja) | 2010-03-10 | 2011-09-22 | M Hikari Energy Kaihatsu Kenkyusho:Kk | 水素化金属の析出及び水素の製造方法 |
JP5469490B2 (ja) | 2010-03-12 | 2014-04-16 | 株式会社スギノマシン | 加工装置 |
WO2012026011A1 (ja) | 2010-08-25 | 2012-03-01 | 日鍛バルブ株式会社 | 中空ポペットバルブおよびその製造方法 |
JP5625690B2 (ja) | 2010-09-30 | 2014-11-19 | マツダ株式会社 | エンジン用バルブ |
DE102010052363A1 (de) | 2010-11-24 | 2012-05-24 | Zwilling J. A. Henckels Ag | Kochmesser |
JP2012112358A (ja) | 2010-11-26 | 2012-06-14 | Mitsubishi Heavy Ind Ltd | 封入剤注入装置及び中空エンジンバルブの製造方法 |
JP2012136979A (ja) | 2010-12-24 | 2012-07-19 | Mitsubishi Heavy Ind Ltd | 金属ナトリウム含有エンジンバルブの製造方法、金属ナトリウム供給装置 |
JP2012136978A (ja) | 2010-12-24 | 2012-07-19 | Mitsubishi Heavy Ind Ltd | 金属ナトリウム供給装置 |
JP4929408B1 (ja) | 2011-03-22 | 2012-05-09 | 三菱重工業株式会社 | 中空エンジンバルブの製造方法 |
JP2013112550A (ja) | 2011-11-28 | 2013-06-10 | Ihi Corp | ナトリウム供給装置及びナトリウム供給方法 |
WO2013080389A1 (ja) | 2011-12-02 | 2013-06-06 | 日本碍子株式会社 | エンジン燃焼室構造 |
JP5838105B2 (ja) | 2012-03-05 | 2015-12-24 | 住化カラー株式会社 | ストランド切断方法ならびにペレット製造方法および製造装置 |
JP5914639B2 (ja) | 2012-03-30 | 2016-05-11 | 日鍛バルブ株式会社 | 冷媒入り中空ポペットバルブの製造方法,冷媒入り中空ポペットバルブおよびバルブ収容治具 |
US8960148B2 (en) | 2012-07-11 | 2015-02-24 | George McGinnis | Heat transferring engine valve for fuel conservation |
JP6251177B2 (ja) | 2012-10-02 | 2017-12-20 | 日鍛バルブ株式会社 | 中空ポペットバルブ |
US9175788B2 (en) | 2012-10-02 | 2015-11-03 | Nittan Valve Co., Ltd. | Hollow poppet valve |
JP2014152636A (ja) | 2013-02-05 | 2014-08-25 | Mitsubishi Heavy Ind Ltd | バルブの製造方法、及びNa供給装置 |
DE102013203441A1 (de) * | 2013-02-28 | 2014-08-28 | Bayerische Motoren Werke Aktiengesellschaft | Betriebsverfahren für ein einachsiges Wankstabilisierungssystem eines zweiachsigen, zweispurigen Fahrzeugs |
CA2903383C (en) | 2013-03-14 | 2018-06-05 | Nittan Valve Co., Ltd. | Hollow poppet valve |
JP6029742B2 (ja) | 2013-03-19 | 2016-11-24 | 日鍛バルブ株式会社 | 中空ポペットバルブ |
JP6063558B2 (ja) | 2013-03-29 | 2017-01-18 | 日鍛バルブ株式会社 | 中空ポペットバルブ |
JP6131318B2 (ja) | 2013-03-29 | 2017-05-17 | 日鍛バルブ株式会社 | 中空ポペットバルブ |
US9920663B2 (en) | 2013-04-11 | 2018-03-20 | Nittan Valve Co., Ltd. | Hollow poppet valve |
JP6196497B2 (ja) | 2013-08-13 | 2017-09-13 | 株式会社スギノマシン | 工作機械 |
US9751164B2 (en) * | 2013-11-21 | 2017-09-05 | Nittan Valve Co., Ltd. | Method of manufacturing a hollow poppet valve |
JP6316588B2 (ja) * | 2013-12-27 | 2018-04-25 | 日本ピストンリング株式会社 | 内燃機関用バルブとバルブシートの組合せ体 |
RU2641870C1 (ru) | 2014-02-10 | 2018-01-22 | Ниттан Вэлв Ко., Лтд. | Полый тарельчатый клапан |
CN105339610A (zh) | 2014-02-12 | 2016-02-17 | 日锻汽门株式会社 | 提升阀 |
CN203700465U (zh) | 2014-02-20 | 2014-07-09 | 贵州省产品质量监督检验院 | 一种提纯金属钠的装置 |
CN103757435B (zh) | 2014-02-20 | 2016-05-18 | 贵州省产品质量监督检验院 | 一种提纯金属钠的方法 |
WO2015170384A1 (ja) * | 2014-05-08 | 2015-11-12 | 日鍛バルブ株式会社 | 中空ポペットバルブ |
JP6215156B2 (ja) * | 2014-08-27 | 2017-10-18 | フジホローバルブ株式会社 | 中空エンジンバルブ及びその製造方法 |
JP5735721B1 (ja) | 2014-09-02 | 2015-06-17 | フジオーゼックス株式会社 | 中空弁への金属ナトリウムの供給方法および装置 |
US20160186620A1 (en) | 2014-12-30 | 2016-06-30 | General Electric Company | Multi-material valve guide system and method |
JP6609124B2 (ja) | 2015-06-23 | 2019-11-20 | イビデン株式会社 | エンジンバルブ及びその製造方法 |
DE102015220891A1 (de) | 2015-10-26 | 2017-04-27 | Federal-Mogul Valvetrain Gmbh | Innengekühltes Ventil für Verbrennungsmotoren sowie Verfahren und Vorrichtung zu dessen Herstellung |
KR101703288B1 (ko) | 2015-10-28 | 2017-02-06 | 니탄 밸브 가부시키가이샤 | 포핏 밸브 중간체 내로의 불활성 가스 공급 방법 및 포핏 밸브 중간체 내로의 불활성 가스 공급 장치 |
WO2017130375A1 (ja) | 2016-01-29 | 2017-08-03 | 日鍛バルブ株式会社 | 金属ナトリウムの精製方法 |
CN108138610B (zh) | 2016-01-29 | 2021-03-12 | 日锻汽门株式会社 | 金属钠的填充方法 |
US10569318B2 (en) | 2016-02-15 | 2020-02-25 | Nittan Valve Co., Ltd. | Cutting apparatus and cutting blade |
JP2017190759A (ja) | 2016-04-15 | 2017-10-19 | 愛三工業株式会社 | 中空エンジンバルブ及びステムキャップ |
DE202016004635U1 (de) | 2016-07-21 | 2016-08-11 | TIBO Tiefbohrtechnik GmbH | Schwingungsdämpfungseinrichtung für einen Bohrer sowie Tiefbohranordnung mit einer solchen Schwingungsdämpfungseinrichtung |
CN109922911B (zh) | 2016-12-05 | 2021-03-09 | 日锻汽门株式会社 | 加工装置、加工装置的使用方法及夹盘装置 |
-
2018
- 2018-03-20 EP EP18910259.3A patent/EP3667036B1/en active Active
- 2018-03-20 KR KR1020197035912A patent/KR102285017B1/ko active IP Right Grant
- 2018-03-20 JP JP2019560411A patent/JP6653050B1/ja active Active
- 2018-03-20 WO PCT/JP2018/010980 patent/WO2019180806A1/ja unknown
- 2018-03-20 CN CN201880047096.3A patent/CN110914520B/zh active Active
-
2020
- 2020-09-19 US US17/026,175 patent/US11300018B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01173305U (ja) * | 1988-05-18 | 1989-12-08 | ||
JPH03242408A (ja) * | 1990-02-16 | 1991-10-29 | Aisan Ind Co Ltd | 中空エンジンバルブの製造方法 |
JPH03258903A (ja) * | 1990-03-07 | 1991-11-19 | Hino Motors Ltd | 中空バルブおよびそれの製造方法 |
JPH0476907U (ja) * | 1990-11-19 | 1992-07-06 | ||
JPH04314906A (ja) * | 1991-04-11 | 1992-11-06 | Fuji Oozx Kk | 内燃機関用中空弁 |
JPH05141214A (ja) | 1991-11-21 | 1993-06-08 | Mitsubishi Heavy Ind Ltd | エンジン用ナトリウム封入バルブ |
JP2013155676A (ja) | 2012-01-30 | 2013-08-15 | Mitsubishi Heavy Ind Ltd | 中空エンジンバルブの製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3667036A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11536167B2 (en) | 2018-11-12 | 2022-12-27 | Nittan Valve Co., Ltd. | Method for manufacturing engine poppet valve |
JPWO2021199190A1 (ja) * | 2020-03-30 | 2021-10-07 | ||
WO2021199190A1 (ja) * | 2020-03-30 | 2021-10-07 | 日鍛バルブ株式会社 | エンジンのポペットバルブの製造方法 |
JP7329201B2 (ja) | 2020-03-30 | 2023-08-18 | 株式会社Nittan | エンジンのポペットバルブの製造方法 |
US11850690B2 (en) | 2020-03-30 | 2023-12-26 | Nittan Corporation | Method for manufacturing engine poppet valve |
Also Published As
Publication number | Publication date |
---|---|
JPWO2019180806A1 (ja) | 2020-04-23 |
EP3667036A4 (en) | 2020-09-02 |
JP6653050B1 (ja) | 2020-02-26 |
EP3667036B1 (en) | 2022-08-31 |
US20210003044A1 (en) | 2021-01-07 |
US11300018B2 (en) | 2022-04-12 |
KR102285017B1 (ko) | 2021-08-04 |
CN110914520A (zh) | 2020-03-24 |
EP3667036A1 (en) | 2020-06-17 |
CN110914520B (zh) | 2021-11-16 |
KR20190138894A (ko) | 2019-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019180806A1 (ja) | 排気用中空ポペットバルブ | |
EP2401481B1 (en) | Sleeve valve assembly with cooling path | |
US9689506B2 (en) | Hollow poppet valve | |
KR101807022B1 (ko) | 실링구조를 갖는 냉각수 제어밸브유닛 | |
JP6029742B2 (ja) | 中空ポペットバルブ | |
JP6880004B2 (ja) | 冷却剤のためのガイドベーンを備える内燃機関用バルブ | |
JP2006097499A (ja) | 内燃機関用中空弁 | |
JP5843757B2 (ja) | ターボチャージャ | |
JP4719139B2 (ja) | 中空バルブ | |
JP6063558B2 (ja) | 中空ポペットバルブ | |
WO2014155665A1 (ja) | 中空ポペットバルブ | |
JP2002180811A (ja) | 内燃機関用バルブ | |
JP2006097498A (ja) | 内燃機関用中空弁 | |
JP2017172497A (ja) | エンジンバルブ及びその製造方法 | |
CN209621482U (zh) | 一种气缸缸筒 | |
JP6449666B2 (ja) | エンジンバルブ | |
JPH04269312A (ja) | 内燃機関用中空弁 | |
JP2021060024A (ja) | 内燃機関の吸気通路構造 | |
JP6486130B2 (ja) | エンジンバルブ | |
JP2007100596A (ja) | 内燃機関用吸気弁 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2019560411 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18910259 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20197035912 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2018910259 Country of ref document: EP Effective date: 20200312 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |