WO2016063640A1 - 燃料レール - Google Patents
燃料レール Download PDFInfo
- Publication number
- WO2016063640A1 WO2016063640A1 PCT/JP2015/075149 JP2015075149W WO2016063640A1 WO 2016063640 A1 WO2016063640 A1 WO 2016063640A1 JP 2015075149 W JP2015075149 W JP 2015075149W WO 2016063640 A1 WO2016063640 A1 WO 2016063640A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injector
- rail
- receiving member
- rail body
- side communication
- Prior art date
Links
Images
Classifications
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
Definitions
- the present invention relates to a fuel rail of a direct injection type internal combustion engine.
- An in-cylinder in-cylinder injection system using an internal combustion engine, particularly gasoline, is injected from an injection valve (injector) by increasing the pressure of the fuel in order to satisfy regulations and requirements on exhaust gas and fuel consumption that are becoming stricter year by year. There is a tendency to further improve atomization of spray and improve combustion.
- the fuel pressure is now 15MPa and 20MPa, but higher pressure is expected.
- a conventional fuel rail is formed by brazing a rail body, a cup for attaching an injector, a sensor boss for attaching a pressure sensor, and a bolt boss for attaching and fixing the rail to the engine head by brazing.
- the entire rail is formed.
- the strength of each component and joint is expected to be insufficient.
- Patent Document 1 describes a pressure accumulation type fuel injection device used for a diesel engine.
- a joint (cup) incorporating a seal member is installed on the flat surface of the rail body, and a load is applied to the step formed on the joint to create a high pressure surface on the seal surface.
- the joint is directly welded to the rail body (see summary).
- Patent Document 2 describes a common rail fuel injection device used for a diesel engine.
- a ring member (cup) is externally fitted at a position corresponding to the branch hole on the outer periphery of the cylindrical member (rail body), and the relative reduction in diameter from the ring member to the cylindrical member is performed.
- compressive residual stress is applied to the periphery of the opening of the branch hole in the inner wall of the rail hole formed in the tubular member, and the tensile stress caused by the internal pressure of the pressurized fuel is suppressed (see summary).
- the rail body is made thicker and integrated with other parts by forging as in the conventional common rail for diesel engines, or the parts are screwed to the injector.
- a method is adopted in which the entire circumference of a supply pipe (joint) for supplying fuel is fixed to the rail body by welding or the like and sealed.
- Patent Document 1 the thickness of the rail body is increased in order to reduce the deformation due to the fuel pressure of the rail body. Further, by welding the entire circumference with a diameter larger than that of the seal portion, it is possible to increase the joining strength of the supply pipe that supplies fuel to the injector. However, in the configuration of Patent Document 1, the overall weight is heavy, the welding area is large, and the cost is high.
- the thickness of the rail body is increased in order to reduce the deformation due to the fuel pressure of the rail body, and further, the fixing and sealing of the ring member is considered only by shrink fitting.
- the shrink fit amount is large, and the stress generated after shrink fit on the supply pipe becomes high. For this reason, a large wall thickness that does not break even when subjected to this stress is required, the overall weight is heavy, and the parts cost is increased.
- An object of the present invention is to provide a fuel rail that can shorten the welding distance or reduce the amount of brazing material and can reliably seal the rail body and the cup.
- a fuel rail according to the present invention includes a rail body and an injector receiving member, and the rail body has a center hole extending in the axial direction at a center portion, and the center hole and the rail.
- a rail main body side communication hole communicating with the outside of the main body, the injector receiving member has an injector insertion hole into which the injector is inserted, and the rail main body side communication hole and the injector insertion hole communicate with each other;
- the injector receiving member has an injector receiving member side communication hole that connects the rail main body side communication hole and the injector insertion hole, and the rail main body and the rail body
- a melted portion of metal is formed from the inside of the injector receiving member with respect to the joint with the injector receiving member, and the contact is formed. Parts is obtained by sealing the.
- the welding distance can be shortened or the amount of brazing material can be reduced,
- the injector receiving member and the rail body can be reliably sealed.
- Sectional drawing which shows the whole fuel rail which concerns on 1st Example of this invention.
- IB-IB sectional view of FIG. The expanded sectional view of the part shown to IIA of FIG. 1A.
- the expanded sectional view of the base part of an injector cup attaching part (enlarged sectional view of the part shown to IIB of FIG. 2A).
- the expanded sectional view which shows the state of the base part of the injector cup attaching part before laser welding (enlarged sectional view of the part shown to IIIB of FIG. 3A).
- the expanded sectional view which shows the example of a change of laser welding.
- the expanded sectional view which shows the welding state after the laser welding in the modification of FIG. 4A (enlarged sectional view of the part shown by IVB of FIG.
- FIG. 6B is a sectional view taken along the line VIB-VIB in FIG. 6A. Sectional drawing which shows the whole fuel rail based on 3rd Example of this invention (VIC-VIC sectional drawing of FIG. 6B).
- FIGS. 1A to 4B A first embodiment according to the present invention will be described with reference to FIGS. 1A to 4B.
- FIG. 1A is a cross-sectional view showing an entire fuel rail according to a first embodiment of the present invention.
- FIG. 1B is a cross-sectional view showing the IB-IB cross section of FIG. 1A. 1A corresponds to the IA-IA cross section of FIG. 1B.
- 1 indicates a high-pressure fuel rail.
- the high-pressure fuel rail 1 according to the present embodiment can be used for a fuel injection device that is used at a fuel pressure exceeding 20 MPa.
- the high-pressure fuel rail 1 can also be used for a fuel injection device that is used at a fuel pressure of 20 MPa or less.
- the high-pressure fuel rail 1 is sometimes simply referred to as the fuel rail 1.
- the high-pressure fuel rail 1 includes a rail body 2, an inlet 3, a sensor boss 4, and an injector cup 5.
- a through hole 2b penetrating in the longitudinal direction (the direction of the central axis 2a) is formed at the center of the rail body.
- the through hole 2b constitutes a pressure accumulating chamber (common rail), and the rail body 2 or the fuel rail 1 may be called a common rail.
- An inlet 3 is provided at one end of the rail body 2.
- the inlet 3 serves as an inlet for supplying high-pressure fuel from the high-pressure pump (not shown) through the high-pressure pipe (not shown) into the rail body 2 (through hole 2a).
- a sensor boss 4 is provided at the other end of the rail body 2.
- a pressure sensor (not shown) for measuring the fuel pressure in the rail body 2 is attached to the sensor boss 4.
- the inlet 3 and the sensor boss 4 are sealed and fixed to the rail body 2 by screwing, brazing, welding, or the like.
- the injector body 5 corresponding to the cylinder of the engine is disposed on the rail body 2.
- the injector cup 5 is an injector receiving member that receives an injector (not shown).
- the injector cup 5 is positioned in accordance with the position and interval of the injector mounting hole of the engine head by holding the rail 2 by the holding portion 6.
- the holding portion 6 is provided with a through hole 6a penetrating in the direction of the central axis 2a, and the injector cup 5 is attached to the rail main body 2 so that the rail main body 2 passes through the through hole 6a.
- a rail body side communication hole 10 that connects the inside (through hole 2 a) and the outside of the rail body 2 is formed in a portion of the rail body 2 where the injector cup 5 is disposed.
- the injector cup 5 further includes an injector insertion hole 7 into which an injector (not shown) is inserted, an injector seal surface 8 that seals fuel via the injector and an O-ring, and a fuel from the rail 2 on the inner upper portion thereof. And a cup side communication hole 9 through which the water passes.
- the injector seal surface 8 is constituted by the inner peripheral surface of the injector insertion hole 7.
- the high-pressure fuel rail 1 is fixed to the engine 22 with bolts 21 (see FIG. 6A) or the like via a rail 20 or a bracket 20 fixed to the injector cup 5 by welding or the like, and the injector cup 5 and the injector of the engine head. Hold the injector between the mounting holes.
- the fuel supplied from the high-pressure pump and the high-pressure pipe is supplied into the rail 2 (through hole 2b) through the inlet 3, and is supplied into the injector cup 5 through the rail body side communication hole 10 and the cup side communication hole 9. Is done.
- the fuel (high pressure fuel) supplied into the injector cup 5 is supplied into the injector in accordance with the opening of the injector.
- the pressure in the fuel chamber from the rail body 2 through the communication holes 9 and 10 into the injector cup 5 is maintained at the fuel pressure controlled by the high pressure pump.
- the fuel pressure of recent direct injection systems has been changed from 15 MPa to 20 MPa, and the rail 2, injector cup 5 and other parts are set to have a thickness and material sufficient to withstand this fuel pressure.
- FIG. 2A is an enlarged cross-sectional view of a portion indicated by IIA in FIG. 1A.
- FIG. 2B is an enlarged cross-sectional view (an enlarged cross-sectional view of a portion indicated by IIB in FIG. 2A) of the base portion of the injector cup mounting portion.
- FIG. 3A is an enlarged cross-sectional view showing a state of laser welding.
- FIG. 3B is an enlarged cross-sectional view (an enlarged cross-sectional view of a portion indicated by IIIB in FIG. 3A) showing a state of a base portion of the injector cup mounting portion before laser welding.
- FIG. 2B shows the state after welding has been performed on FIG. 3B.
- the rail body 2 is inserted into the through hole 6 a of the injector cup 5, so that the injector cup 5 is attached to the rail body 2 so as to hold the rail body 2.
- the rail body 2 and the injector insertion hole 7 of the injector cup 5 communicate with each other through a rail body side communication hole 10 and a cup side communication hole 9, and pressurized fuel (high pressure fuel) is supplied from the rail body 2 to the injector side. Supplied to.
- the two communication holes 9 and 10 have a rail body 2 side (rail body side communication hole 10) smaller than the cup side (cup side communication hole 9).
- the outer peripheral surface of the rail body 2 can be seen through the cup side communication hole 9. That is, the outer peripheral surface of the rail body 2 protrudes from the peripheral edge of the cup side communication hole 9 toward the center side.
- An annular flange (reduced diameter portion) 11 that is reduced in diameter from the diameter of the injector seal surface 8 to the cup side communication hole 9 is provided at the base portion of the attachment portion of the injector cup 5. That is, the annular flange 11 is formed between the cup side communication hole 9 and the injector seal surface 8.
- the periphery of the cup side communication hole 9 is melted around the circumference of the annular flange 11 and the periphery of the rail body side communication hole 10 and sealed.
- the molten portion forms a molten layer 12 of metal between the rail body 2 and the injector cup 5 to seal the inside of the injector cup 5 from the atmosphere.
- the molten layer 12 spreads in part in the thickness direction from the outer peripheral surface of the rail body 2 toward the inner peripheral surface side (center side). That is, the molten layer 12 does not penetrate from the outer peripheral surface of the rail body 2 to the inner peripheral surface.
- the molten layer 12 functions as a seal, and the high-pressure fuel does not penetrate into the gap formed at the joint between the end surface 5a of the injector cup 5 and the outer peripheral surface of the rail body 2. For this reason, it can prevent that the pressure by a high pressure fuel acts on the junction part of the end surface 5a of the injector cup 5 and the outer peripheral surface of the rail main body 2.
- the seal by the molten layer 12 may be provided only in a small range of the inner peripheral portion of the cup side communication hole 9 inside the injector cup.
- the holding portion 6 is responsible for all or most of the fixing force or supporting force of the injector cup 5 to the rail body 2, and the molten layer 12 is responsible for the sealing function. For this reason, the quantity of the rail main body 2 and the injector cup 5 which are melted by laser welding can be reduced.
- the connection between the holding portion 6 of the injector cup 5 and the rail body 2 may be performed by press-fitting. In a state where fuel pressure is applied, the rail body 2 receives a force that increases the outer diameter due to the fuel pressure. For this reason, it is not necessary to make the press-fitting amount so large. In a state where the fuel pressure is not acting, the press-fit amount may be set so as not to cause a positional deviation between the holding portion 6 of the injector cup 5 and the rail body 2.
- FIG. 4A is an enlarged cross-sectional view showing a modified example of laser welding.
- 4B is an enlarged cross-sectional view (enlarged cross-sectional view of a portion indicated by IVB in FIG. 4A) showing a welding state after laser welding in the modified example of FIG. 4A.
- the molten metal layer 13 is formed across the two parts of the injector cup 5 and the rail body 2.
- the melting portion 13 is formed radially outward from the inner peripheral surface of the cup side communication hole 9, and the cup side communication hole 9 is formed on the inner periphery of the cup side communication hole 9. The machined surface remains.
- the fuel penetrates in the direction of leaking from the junction between the outer peripheral surface of the rail 2 and the end surface 5a of the injector cup 5 to the outside air side.
- the fuel that has permeated the joint surface is prevented from penetrating into the outside air by the molten layer 13.
- the seal by the molten layer 13 should just be provided only in the small range around the cup side communication hole 9 inside the injector cup. The fuel is not leaked by the seal formed by the molten layer 13.
- the pressure that presses the end surface 5a against the outer peripheral surface of the rail body 2 is applied to the annular flange 11 from the tapered surface 11a side by the high-pressure fuel. Further, the rail body 2 is subjected to pressure to press the outer peripheral surface against the end surface 5 a of the injector cup 5 from the inner peripheral surface side. Therefore, the pressure acting on the taper surface 11a and the pressure acting on the inner peripheral surface of the rail body 2 work as pressures for bringing the joint surface between the injector cup 5 and the rail body 2 into close contact.
- the pressure of the high-pressure fuel that has entered the gap formed in the range from the inner peripheral edge of the cup-side communication hole 9 to the melting tank 13 pushes the joint surface between the injector cup 5 and the rail body 2.
- this gap is only formed in a minute range in the vicinity of the inner peripheral edge of the cup-side communication hole 9, a range (area) in which a pressure that pushes the joint surface between the injector cup 5 and the rail body 2 acts is applied. Is very small compared to the range (area) in which the pressure for bringing the bonding surface into close contact acts.
- the melt layers 12 and 13 can ensure sealing performance with a small melt width and depth.
- the outer side of the injector cup 5 needs to be welded over the entire circumference, and since it is not inner welding, it has a structure in which a force in the direction of expanding the joint between the rail body 2 and the injector cup 5 works. .
- the diameter of the cup side communication hole 9 is smaller than the diameter of the injector insertion hole 7 (injector seal surface 8), and the cup side communication hole 9 and the injector insertion hole 7 (injector seal surface 8) are stepped.
- An annular flange 11 is formed in the part.
- the irradiation surface of the laser beam is formed inward in the radial direction from the inner peripheral surface (injector seal surface 8) of the injector insertion hole 7.
- the metal melting portions 12 and 13 are formed inward in the radial direction from the inner peripheral surface (injector seal surface 8) of the injector insertion hole 7. Thereby, the amount of melting of the metal at the time of laser welding can be reduced, and sealing at the joint can be performed.
- FIG. 5A is an enlarged cross-sectional view showing a part of a fuel rail according to a second embodiment of the present invention.
- FIG. 5B is an enlarged cross-sectional view (enlarged cross-sectional view showing a joined state after brazing) of a portion indicated by VB in FIG. 5A.
- FIG. 5C is an enlarged cross-sectional view of the injector cup mounting portion before brazing.
- FIG. 5D is an enlarged cross-sectional view showing a state of brazing.
- the structure of the metal molten layer 16 that forms a seal between the injector cup 5 and the rail body 2 is different from the molten layers 12 and 13 in the first embodiment. Further, by changing the configuration of the molten metal layer 16, the configuration of a part of the injector cup 5 is changed. Other configurations are the same as those of the first embodiment. Hereinafter, differences from the first embodiment will be described in detail.
- the diameter of the communication hole 9 ′ on the injector cup 5 side is larger than the diameter of the rail body side communication hole 10 and has an annular stepped portion 14.
- the difference between the diameter of the cup side communication hole 9 ′ and the diameter of the rail body side communication hole 10 in the present embodiment is the difference between the diameter of the cup side communication hole 9 and the diameter of the rail body side communication hole 10 in the first embodiment. Bigger than.
- the difference between the diameter of the cup side communication hole 9 ′ and the diameter of the rail body side communication hole 10 is larger than the diameter of the rail body side communication hole 10.
- the difference between the diameter of the cup side communication hole 9 and the diameter of the rail body side communication hole 10 is smaller than the diameter of the rail body side communication hole 10. Accordingly, the annular stepped portion 14 having a width (width dimension) of 1 ⁇ 2 of the difference between the diameter of the cup side communication hole 9 ′ and the diameter of the rail body side communication hole 10 around the rail body side communication hole 10.
- the bottom surface portion 14a is formed.
- a brazing material 15 such as copper brazing is disposed on the inner periphery of the annular stepped portion 14, and the vicinity is overheated to melt the brazing.
- a heating method there are methods such as putting the entire rail into a furnace, heating the vicinity of the rail with high frequency, or locally irradiating a laser from the injector cup 5 side.
- the melted wax is formed into a fillet-like molten layer (melting portion) 16 on the annular stepped portion 14, the vicinity of the rail body side communication hole 10, and the opposing surface of the rail body 2 and the injector cup 5.
- the diameter of the cup side communication hole 9 ′ is smaller than the diameter of the injector insertion hole 7 (injector seal surface 8), and the cup side communication hole 9 ′ and the injector insertion hole 7 (injector seal surface 8)
- An annular flange 11 is formed on the stepped portion.
- the brazing material arrangement surface (brazing surface) is formed inward in the radial direction from the inner peripheral surface (injector seal surface 8) of the injector insertion hole 7. Accordingly, the molten portion 16 of metal is formed inward in the radial direction from the inner peripheral surface (injector seal surface 8) of the injector insertion hole 7. Thereby, the quantity of the brazing material at the time of brazing can be reduced, and the seal
- the melt layer 16 formed in a fillet shape functions as a seal, and high-pressure fuel penetrates into a gap formed at the joint between the end surface 5a of the injector cup 5 and the outer peripheral surface of the rail body 2. There is no. For this reason, fuel leakage can be prevented. Moreover, it can prevent that the pressure by a high pressure fuel acts as a pressure which spreads the junction part of the end surface 5a of the injector cup 5, and the outer peripheral surface of the rail main body 2.
- the sealing by the molten layer 16 may be provided only in a small range of the inner peripheral portion of the cup side communication hole 9 ′ inside the injector cup. For this reason, sealing performance can be ensured in a small melting region.
- FIG. 6A is an external view showing an entire fuel rail according to a third embodiment of the present invention.
- 6B is a cross-sectional view taken along the line VIB-VIB in FIG. 6A.
- FIG. 6C is a cross-sectional view (VIC-VIC cross-sectional view of FIG. 6B) showing the entire fuel rail according to the third embodiment of the present invention.
- the configuration of the holding portion 6 'of the injector cup 5 is different from the holding portion 6 in the first embodiment.
- Other configurations are the same as those of the first embodiment.
- differences from the first embodiment will be described in detail.
- the holding portion 6 'for holding the rail 2 of the injector cup 5 is not configured to surround the entire circumference of the rail body 2 as described above.
- This holding portion 6 ′ only needs to surround the outer periphery of the rail body 2 in the circumferential direction in a range larger than 1 ⁇ 2, and if it surrounds a range larger than 1 ⁇ 2, the same effect as the entire circumference can be obtained. can get.
- weight reduction of the fuel rail 1 can be achieved by making the weight of the injector cup 5 light.
- the configuration of the holding portion 6 ′ of the injector cup 5 of this embodiment can be applied to the second embodiment. Further, the holding portion 6 ′ of the present embodiment may be applied to the injector cup 5 described in the first embodiment (including the modified example).
- the periphery of the communication holes 9, 9 ′, 10 that communicate the injector cup 5 and the rail body 2 is sealed, so that the welding distance can be shortened or the amount of brazing material
- the injector cup 5 and the rail body 2 can be reliably sealed.
- SYMBOLS 1 High pressure fuel rail, 2 ... Rail main body, 3 ... Inlet, 4 ... Sensor boss, 5 ... Injector cup, 6 ... Embrace part, 6 '... Embrace part, 7 ... Injector insertion hole, 8 ... Injector seal surface, 9 ... Cup side communication hole, 9 '... Cup side communication hole, 10 ... Rail body side communication hole, 11 ... Annular flange, 12 ... Molten layer, 13 ... Molten layer, 14 ... Annular stepped part, 14a ... Annular stepped part 15 ... brazing material, 16 ... molten layer.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims (8)
- レール本体とインジェクタ受部材とを備え、前記レール本体は中心部に軸方向に延設された中心孔を有すると共に前記中心孔と前記レール本体の外部とを連通するレール本体側連通孔を有し、前記インジェクタ受部材はインジェクタが挿入されるインジェクタ挿入孔を有し、前記レール本体側連通孔と前記インジェクタ挿入孔とが連通するように前記レール本体に前記インジェクタ受部材を取り付けた燃料レールにおいて、
前記インジェクタ受部材は前記レール本体側連通孔と前記インジェクタ挿入孔とを連通するインジェクタ受部材側連通孔を有し、
前記レール本体と前記インジェクタ受部材との接合部に対して、前記インジェクタ受部材の内側から金属の溶融部を形成して、前記接合部をシールしたことを特徴とする燃料レール。 - 請求項1に記載の燃料レールにおいて、
前記インジェクタ受部材にはレールの外周を周方向に1周、あるいは1/2周よりも広い範囲を抱き込む固定部を有することを特徴とする燃料レール。 - 請求項2に記載の燃料レールにおいて、
前記溶融部は、前記レール本体と前記インジェクタ受部材との接合面がレーザー溶接で接合されることにより形成されていることを特徴とする燃料レール。 - 請求項3に記載の燃料レールにおいて、
前記インジェクタ受部材は、前記インジェクタ受部材側連通孔の周囲に環状フランジ部を有し、
前記溶融部は、前記環状フランジ部と前記レール本体との重なり部をレーザー溶接することにより形成されたことを特徴とする燃料レール。 - 請求項4に記載の燃料レールにおいて、
前記レール本体側連通孔は前記インジェクタ受部材側連通孔よりも小径に形成され、
前記レール本体は前記インジェクタ受部材側連通孔の内周縁から内方に突き出した突出し部を有し、
前記溶融部は、前記インジェクタ受部材側連通孔の内周面及び前記レール本体の前記突出し部に跨って形成されていることを特徴とする燃料レール。 - 請求項4に記載の燃料レールにおいて、
前記溶融部は、前記インジェクタ受部材側連通孔の内周面よりも半径方向の外方に形成されており、
前記インジェクタ受部材側連通孔の内周に前記インジェクタ受部材側連通孔の加工面が残存していることを特徴とする燃料レール。 - 請求項2に記載の燃料レールにおいて、
前記溶融部は、前記レール本体と前記インジェクタ受部材との接合面がろう付けされることにより形成されていることを特徴とする燃料レール。 - 請求項7に記載の燃料レールにおいて、
前記インジェクタ受部材は、前記インジェクタ受部材側連通孔の周囲に環状段部を有し、
前記溶融部は、前記環状段部の内周から前記インジェクタ受部材と前記レール本体との接合部に広がるろう材の層によって形成されていることを特徴とする燃料レール。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016555129A JP6253798B2 (ja) | 2014-10-23 | 2015-09-04 | 燃料レール |
EP15853061.8A EP3211207A4 (en) | 2014-10-23 | 2015-09-04 | Fuel rail |
CN201580056952.8A CN107076080A (zh) | 2014-10-23 | 2015-09-04 | 燃料轨道 |
US15/519,231 US20170226978A1 (en) | 2014-10-23 | 2015-09-04 | Fuel Rail |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014215932 | 2014-10-23 | ||
JP2014-215932 | 2014-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016063640A1 true WO2016063640A1 (ja) | 2016-04-28 |
Family
ID=55760685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/075149 WO2016063640A1 (ja) | 2014-10-23 | 2015-09-04 | 燃料レール |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170226978A1 (ja) |
EP (1) | EP3211207A4 (ja) |
JP (1) | JP6253798B2 (ja) |
CN (1) | CN107076080A (ja) |
WO (1) | WO2016063640A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3301294A1 (en) * | 2016-09-30 | 2018-04-04 | Continental Automotive GmbH | Fuel rail assembly |
JP2019052616A (ja) * | 2017-09-19 | 2019-04-04 | 臼井国際産業株式会社 | 高圧直噴用のレール |
JP2020530618A (ja) * | 2017-08-07 | 2020-10-22 | ニッサン ノース アメリカ,インク | 自律車両の通知のシステムと方法 |
KR102258649B1 (ko) * | 2019-12-24 | 2021-06-01 | 주식회사 현대케피코 | 연료 레일 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10471554B2 (en) * | 2017-08-22 | 2019-11-12 | Caterpillar Inc. | Fuel injector bore repair |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0244627B2 (ja) * | 1986-06-16 | 1990-10-04 | Seiwa Kogyosho Kk | Denkionsuikitonokantainoseizohoho |
JPH0578966U (ja) * | 1992-03-31 | 1993-10-26 | 臼井国際産業株式会社 | フユーエルデリバリパイプ |
JPH10213044A (ja) * | 1996-11-30 | 1998-08-11 | Usui Internatl Ind Co Ltd | コモンレールにおける分岐接続体の接続構造 |
JPH10246378A (ja) * | 1997-03-04 | 1998-09-14 | Usui Internatl Ind Co Ltd | コモンレール |
JP2001221126A (ja) * | 2000-02-07 | 2001-08-17 | Otics Corp | コモンレール及びその製造方法 |
JP2003154453A (ja) * | 2002-12-02 | 2003-05-27 | Corona Corp | 缶体の製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000234688A (ja) * | 1999-02-17 | 2000-08-29 | Usui Internatl Ind Co Ltd | コモンレールの製造方法 |
US6959695B2 (en) * | 2001-10-17 | 2005-11-01 | Robert Bosch Corporation | Multi-point fuel injection module |
JP4032383B2 (ja) * | 2002-09-25 | 2008-01-16 | 臼井国際産業株式会社 | 燃料レール及び燃料レール用主管並びにこれらの製造方法 |
JP2004169554A (ja) * | 2002-11-15 | 2004-06-17 | Denso Corp | 蓄圧式燃料噴射装置 |
JP4438450B2 (ja) * | 2003-04-07 | 2010-03-24 | 株式会社デンソー | 配管継手装置およびその組付方法 |
US7125051B2 (en) * | 2003-07-10 | 2006-10-24 | Usui Kokusai Sangyo Kaisha Limited | Common-rail injection system for diesel engine |
JP2007016668A (ja) * | 2005-07-06 | 2007-01-25 | Usui Kokusai Sangyo Kaisha Ltd | 直噴ガソリンエンジン用燃料レール |
US20080169364A1 (en) * | 2007-01-11 | 2008-07-17 | Zdroik Michael J | Welded fuel injector attachment |
CN201351558Y (zh) * | 2008-12-25 | 2009-11-25 | 联合汽车电子有限公司 | 高压燃油分配管中相互连通的零件的连接结构 |
DE102009051065B3 (de) * | 2009-10-28 | 2011-01-20 | Benteler Automobiltechnik Gmbh | Kraftstoffverteiler |
-
2015
- 2015-09-04 JP JP2016555129A patent/JP6253798B2/ja not_active Expired - Fee Related
- 2015-09-04 EP EP15853061.8A patent/EP3211207A4/en not_active Withdrawn
- 2015-09-04 CN CN201580056952.8A patent/CN107076080A/zh active Pending
- 2015-09-04 WO PCT/JP2015/075149 patent/WO2016063640A1/ja active Application Filing
- 2015-09-04 US US15/519,231 patent/US20170226978A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0244627B2 (ja) * | 1986-06-16 | 1990-10-04 | Seiwa Kogyosho Kk | Denkionsuikitonokantainoseizohoho |
JPH0578966U (ja) * | 1992-03-31 | 1993-10-26 | 臼井国際産業株式会社 | フユーエルデリバリパイプ |
JPH10213044A (ja) * | 1996-11-30 | 1998-08-11 | Usui Internatl Ind Co Ltd | コモンレールにおける分岐接続体の接続構造 |
JPH10246378A (ja) * | 1997-03-04 | 1998-09-14 | Usui Internatl Ind Co Ltd | コモンレール |
JP2001221126A (ja) * | 2000-02-07 | 2001-08-17 | Otics Corp | コモンレール及びその製造方法 |
JP2003154453A (ja) * | 2002-12-02 | 2003-05-27 | Corona Corp | 缶体の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3211207A4 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3301294A1 (en) * | 2016-09-30 | 2018-04-04 | Continental Automotive GmbH | Fuel rail assembly |
WO2018060353A1 (en) * | 2016-09-30 | 2018-04-05 | Continental Automotive Gmbh | Fuel rail assembly |
KR20190053961A (ko) * | 2016-09-30 | 2019-05-20 | 씨피티 그룹 게엠베하 | 연료 레일 조립체 |
CN109923299A (zh) * | 2016-09-30 | 2019-06-21 | 世倍特集团有限责任公司 | 燃料轨道组件 |
KR102196552B1 (ko) * | 2016-09-30 | 2020-12-30 | 씨피티 그룹 게엠베하 | 연료 레일 조립체 |
US11008989B2 (en) | 2016-09-30 | 2021-05-18 | Vitesco Technologies GmbH | Fuel rail assembly |
CN109923299B (zh) * | 2016-09-30 | 2021-11-23 | 世倍特集团有限责任公司 | 燃料轨道组件 |
JP2020530618A (ja) * | 2017-08-07 | 2020-10-22 | ニッサン ノース アメリカ,インク | 自律車両の通知のシステムと方法 |
JP2019052616A (ja) * | 2017-09-19 | 2019-04-04 | 臼井国際産業株式会社 | 高圧直噴用のレール |
KR102258649B1 (ko) * | 2019-12-24 | 2021-06-01 | 주식회사 현대케피코 | 연료 레일 |
Also Published As
Publication number | Publication date |
---|---|
EP3211207A4 (en) | 2018-05-16 |
JPWO2016063640A1 (ja) | 2017-06-01 |
US20170226978A1 (en) | 2017-08-10 |
CN107076080A (zh) | 2017-08-18 |
EP3211207A1 (en) | 2017-08-30 |
JP6253798B2 (ja) | 2017-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6253798B2 (ja) | 燃料レール | |
US8402946B2 (en) | Fuel distributor | |
US5957507A (en) | Joint structure for branch connectors in common rails | |
US20010009148A1 (en) | Common rail | |
JP2001020830A (ja) | ディーゼル機関用高圧燃料噴射管 | |
CN108779749B (zh) | 内压承载构件(油轨)及其制造方法 | |
JP2010242712A (ja) | フューエルデリバリパイプ | |
US20170260946A1 (en) | Fuel rail for gasoline direct-injection engine | |
JP2006233866A (ja) | コモンレール | |
JP2003504561A (ja) | 内燃機関の燃料噴射機構のための接続片及び、予め締め付けて溶接された接続片を備えるケーシング、特に燃料高圧蓄圧器 | |
WO2016010079A1 (ja) | ガソリン直噴エンジン用燃料レールの端末シール構造 | |
JP6430012B2 (ja) | 高圧接続装置、燃料高圧ポンプおよび燃料高圧ポンプ用の高圧接続装置を製造する方法 | |
KR101960201B1 (ko) | 가솔린 직분사 엔진용 연료 레일의 단말 시일 구조 | |
JP5720938B2 (ja) | 組み付け方法 | |
US20190063390A1 (en) | Fuel injector | |
JP5190340B2 (ja) | コモンレール | |
JP4071898B2 (ja) | コモンレール | |
CN106460753A (zh) | 燃料喷射器的燃料供给装置和燃料喷射器 | |
JP2012036961A (ja) | 管継手構造 | |
JP5759788B2 (ja) | フューエルデリバリパイプの製造方法 | |
KR20160069534A (ko) | 고강도 조립 구조를 갖는 연료레일 | |
JP2017106383A (ja) | インジェクタ及び燃料レールアッセンブリ | |
JP2007309320A (ja) | 組み込まれた絞りを備えた高圧接続部 | |
JP2006200454A (ja) | コモンレール | |
JP2022012701A (ja) | ガソリン直噴燃料レール |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15853061 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016555129 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2015853061 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015853061 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |