WO2022078965A1 - An isolation kit for a fuel charge assembly - Google Patents

An isolation kit for a fuel charge assembly Download PDF

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Publication number
WO2022078965A1
WO2022078965A1 PCT/EP2021/078064 EP2021078064W WO2022078965A1 WO 2022078965 A1 WO2022078965 A1 WO 2022078965A1 EP 2021078064 W EP2021078064 W EP 2021078064W WO 2022078965 A1 WO2022078965 A1 WO 2022078965A1
Authority
WO
WIPO (PCT)
Prior art keywords
isolation
limiter
support
extension
arms
Prior art date
Application number
PCT/EP2021/078064
Other languages
French (fr)
Inventor
Cemil YAGLIOGLU
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2022078965A1 publication Critical patent/WO2022078965A1/en

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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/852—Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/857—Mounting of fuel injection apparatus characterised by mounting fuel or common rail to engine

Definitions

  • the present invention relates to an isolation kit having vibration isolation apparatuses preventing vibration on a cylinder head of a motor block and between a fuel charge assembly.
  • a fuel charge assembly comprises a fuel rail, a fuel injector and holding and mounting means there between.
  • the fuel injector is mounted on a cylinder head.
  • cylinder head vibrates and everything assembled onto the cylinder head are effected of this vibration, and causes certain amount of noise.
  • a connection to the cylinder head is interrupted with an isolation rubber and reduces an amount of the noise of suspended fuel rail assembly but, not in an enough amount.
  • an isolation kit is a preassembled on the suspended fuel rail assembly with a special bolt.
  • a hollow first isolation limiter and a hollow second isolation limiter are used to connect a fuel rail assembly member.
  • hollow cylindrical rubber members are used to prevent vibrations.
  • a vibration isolation fuel rail mounting arrangement is configured for in-plane shear type damping by spacing the mid-width point of the elastomer compression areas of two stacked- layer isolators away from the central fastener axis by a distance between about 1.5 times the bolt diameter and about 3.0 times the bolt diameter.
  • the object of the present invention is to align and fix of members of the isolation kit to reduce vibrations on the mounting members on the cylinder head.
  • the present invention proposes an isolation kit having a first isolation limiter and a second isolation limiter having respectively; a first body with a first support and, a second body with a second support which are formed hollow to dispose a bolt inside the first isolation limiter and the second isolation limiter providing fixing to a cylinder head.
  • the first isolation limiter comprises at least two corresponding first arms to each other, extending from the first support and having a clip on a distal end of the first arm and;
  • the second isolation limiter comprises at least two corresponding second arms to each other, extending from the second support and having a second slot on a distal end of the second arm to connect via snap-fit manner of the clip. Therefore, the isolation kit is preassembled on a suspended fuel rail assembly member in a snap-fitted manner.
  • the clip is in a V-shaped in a cross-section.
  • the clip is attached in a snap-fit manner.
  • the first arm and the V-shaped clip gives flexibility to fix the first isolation limiter.
  • the clip is formed extending outwardly from the first arm.
  • the connection is realized from inside to outside of the second slot.
  • isolation kit having a first isolation limiter and a second isolation limiter having respectively; a first body with a first support and, a second body with a second support which are formed hollow to dispose a bolt inside the first isolation limiter and the second isolation limiter providing fixing to a cylinder head.
  • the first isolation limiter comprises at least two corresponding first arms to each other, extending from the first support and having a first extension on a distal end of the first arm and;
  • the second isolation limiter comprises at least two corresponding second arms to each other, extending from the second support and having a second extension on a distal end of the second arm to attach the first extension with an attaching means. Therefore, the isolation kit is preassembled on a suspended fuel rail assembly member in a fixed manner.
  • the first extension and the second extension are in Il-bended forms which are bended outwardly.
  • an attaching means holds and fixes in a tight manner the first extension to the second extension.
  • the attaching is realized from an outside of the first arm and the second arm.
  • the first extension and the second extension are in Il-bended forms which are bended inwardly.
  • the attaching is realized from an inside of the first arm and the second arm.
  • the attaching means is a rubber band providing to attach the first extension and the second extension to each other.
  • the rubber band easily attached to the first extension and the second extension.
  • isolation kit having a first isolation limiter and a second isolation limiter having respectively; a first body with a first support and, a second body with a second support which are formed hollow to dispose a bolt inside the first isolation limiter and the second isolation limiter providing fixing to a cylinder head.
  • the first isolation limiter comprises at least two corresponding first arms to each other, extending from the first support and having a first slot on a distal end of the first arm and; the second isolation limiter comprises at least two corresponding second arms to each other, extending from the second support and having a second slot on a distal end of the second arm; to provide attachment of the first isolation limiter to the second isolation limiter the isolation kit further comprises a holding clip providing attachment via passing protruded head parts of the holding clip from the first slot and from the second slot. Therefore, the isolation kit is preassembled on a suspended fuel rail assembly member in a fixed manner.
  • the holding clip comprises a body, at least two pins extending from the body and the head parts formed on the pin.
  • Figure 1 shows a first embodiment of the present invention with a snap-fit connection, in a demounted manner.
  • Figure 2 shows the first embodiment of the present invention with a snap-fit connection, in a mounted manner.
  • Figure 3 shows the first embodiment in a cross-sectional view taken from the figure 2.
  • Figure 4 shows a second embodiment of the present invention with a rubber band connection, in a demounted manner.
  • Figure 5 shows the second embodiment of the present invention with a rubber band connection, in a mounted manner.
  • Figure 6 shows a third embodiment of the present invention with a holding clip connection, in a demounted manner.
  • Figure 7 shows the third embodiment of the present invention with a holding clip connection, in a mounted manner.
  • Figure 8 shows the first embodiment of the present invention fixed on the cylinder head in a lateral view.
  • Figure 9 shows the second embodiment of the present invention fixed on the cylinder head in a lateral view.
  • Figure 10 shows the third embodiment of the present invention fixed on the cylinder head in a lateral view.
  • V1 first vertical axis
  • V2 second vertical axis
  • the present invention proposes an isolation kit having vibration isolation apparatuses preventing vibration on a cylinder head (30) of a motor block and between a fuel charge assembly (1).
  • the fuel charge assembly (1) comprises a fuel rail (11) for conveying fuel from a fuel source to a fuel injector and therefore, to an internal combustion engine.
  • a plurality of fuel injectors are mounted to the fuel rail (11) via fuel injector cups (10) to inject a metered quantity of fuel into the engine for combustion.
  • a pressure sensor (13) is used to arrange pressure of the fuel and a fuel inlet (12) provides to intake the fuel.
  • the fuel charge assembly (1) comprises the fuel injector, some mounting arrangements such as a fuel injector cup (10), mounting brackets and the fuel rail (11).
  • the fuel rail (11) comprises a fuel rail assembly member (20) such as a mounting bracket which is providing to assemble the fuel rail (11 ) and therefore the fuel injector cup (10) to the cylinder head (30).
  • the cylinder head (30) has an aperture (31) to mount a bolt (80).
  • An extension (21) of the fuel rail assembly member (20) is mounted to the cylinder head (30) by the bolt (70).
  • An isolation kit is set on the bolt (80) and the extension (21).
  • the isolation kit comprises a first isolation limiter (40) and a second isolation limiter (50) which are connected and fixed to each other.
  • an isolation kit comprises the first isolation limiter (40) having a first body (41) with a first support (42) and the second isolation limiter (50) having a second body (51) with a second support (52).
  • the first support (42) is formed on the first body (41) as extending from the first body (41) with a 90 degrees angel. Also, the same form applies to the second body (51) and the second support (52).
  • the first support (42) and the second support (52) are in a planar and annular shape.
  • a first embodiment is shown in the figures 1 , 2 and 3.
  • the first body (41) is in a hollow-cylindrical shape and the first support (42) extends from the first body (41). At least two corresponding first arms (43) extend from the first support (42) through the second isolation limiter (50).
  • the first arms (43) have clips (44) at ends extending outwardly.
  • the clip (44) is bended like V-shape, in a cross-section.
  • the second body (51) is in a hollow-cylindrical shape and the second support (52) extends from the second body (51). At least two corresponding second arms (53) extend from the second support (52) through the first isolation limiter (40).
  • the second arms (53) have second slots (54) at ends.
  • first isolation limiter (40) To mount the first isolation limiter (40) to the second isolation limiter (50), firstly, a first vertical axis (v1) (center axis) of the first isolation limiter (40) and a second vertical axis (v2) (center axis) of the second isolation limiter (50) are aligned to each other.
  • Each of the clips (44) are attached to each of the second slots (54) in a snap-fit manner. Therefore, the isolation kit is preassembled on the suspended fuel rail assembly member (20) in a snap-fitted manner by means of fixing the clips (44) in the second slots (54).
  • a mounted state of the first embodiment isolation kit to the cylinder head (30) is given in the figure 8.
  • a second embodiment is shown in the figures 4 and 5.
  • the first body (41) is in a hollow-cylindrical shape and the first support (42) extends from the first body (41). At least two corresponding first arms (43) extend from the first support (42) through the second isolation limiter (50).
  • the second body (51) is in a hollow-cylindrical shape and the second support (52) extends from the second body (51). At least two corresponding second arms (53) extend from the second support (52) through the first isolation limiter (40).
  • the first arms (43) have first extensions (46) and the second arms (53) have second extensions (55), preferably in a Il-bended forms in a cross-sectional view and bended outwardly.
  • a first vertical axis (v1) (center axis) of the first isolation limiter (40) and a second vertical axis (v2) (center axis) of the second isolation limiter (50) are aligned to each other.
  • the isolation kit is preassembled on the suspended fuel rail assembly member (20) with rubber bands (70) using the Il-bended attachment means as the first extensions (46) and the second extensions (55).
  • a mounted state of the second embodiment isolation kit to the cylinder head (30) is given in the figure 9.
  • a third embodiment is shown in the figures 6 and 7.
  • the first body (41) is in a hollow-cylindrical shape and the first support (42) extends from the first body (41). At least two corresponding first arms (43) extend from the first support (42) through the second isolation limiter (50).
  • the second body (51) is in a hollow- cylindrical shape and the second support (52) extends from the second body (51). At least two corresponding second arms (53) extend from the second support (52) through the first isolation limiter (40).
  • the first arms (43) have first slots (45) and the second arms (53) have second slots (54).
  • the third embodiment of the isolation kit has a holding clip (60) to attach corresponding first arms (43) to the second arms (53).
  • the holding clip (60) comprises a body (61) and two pins (62) at distal ends. Also, the pins (62) have protruded head parts (63).
  • a first vertical axis (v1) (center axis) of the first isolation limiter (40) and a second vertical axis (v2) (center axis) of the second isolation limiter (50) are aligned to each other.
  • Each of the first arm (43) are attached and fixed to the each of the second arm (53) via the holding clip (60).
  • the protruded head parts (63) of the pins (62) enters into the first slot (45) and the second slot (54) by pressing the holding clip (60) and fixes the holding clip (60) via click-fitted.
  • the isolation kit is preassembled on the suspended fuel rail assembly member (20) with the first slots (45) and the second slots (54) by using the holding clips (60).
  • a mounted state of the third embodiment isolation kit to the cylinder head (30) is given in the figure 10.
  • an isolation kit according to the described above embodiments of the present invention, are used to prevent vibrations on the fuel charge assembly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The present invention proposes an isolation kit having a first isolation limiter (40) and a second isolation limiter (50) having respectively; a first body (41) with a first support (42) and, a second body (51) with a second support (52) which are formed hollow to dispose a bolt (80) inside the first isolation limiter (40) and the second isolation limiter (50) providing fixing to a cylinder head (30). The first isolation limiter (40) comprises at least two corresponding first arms (43) to each other, extending from the first support (42) and having a clip (44) on a distal end of the first arm (43) and; the second isolation limiter (50) comprises at least two corresponding second arms (53) to each other, extending from the second support (52) and having a second slot (54) on a distal end of the second arm (53) to connect via snap-fit manner of the clip (44).

Description

SPECIFICATION
AN ISOLATION KIT FOR A FUEL CHARGE ASSEMBLY
Technical Field of the Invention
The present invention relates to an isolation kit having vibration isolation apparatuses preventing vibration on a cylinder head of a motor block and between a fuel charge assembly.
Prior Arts
A fuel charge assembly comprises a fuel rail, a fuel injector and holding and mounting means there between. The fuel injector is mounted on a cylinder head. In a suspended fuel injection system of an internal combustion engine, during engine run; cylinder head vibrates and everything assembled onto the cylinder head are effected of this vibration, and causes certain amount of noise.
In the prior art, with an isolation set, a connection to the cylinder head is interrupted with an isolation rubber and reduces an amount of the noise of suspended fuel rail assembly but, not in an enough amount.
In another prior art, an isolation kit is a preassembled on the suspended fuel rail assembly with a special bolt. A hollow first isolation limiter and a hollow second isolation limiter are used to connect a fuel rail assembly member. And hollow cylindrical rubber members are used to prevent vibrations. These, all embodiments are fixed with a bolt on the cylinder head. However, here it is needed an additional assembling step and importantly vibrations and shakes could not prevented on the cylinder head and also on the isolation limiters.
A prior art reference relevant to the technical field of the present invention is the US8800534B2 numbered patent application. According to this invention, a vibration isolation fuel rail mounting arrangement is configured for in-plane shear type damping by spacing the mid-width point of the elastomer compression areas of two stacked- layer isolators away from the central fastener axis by a distance between about 1.5 times the bolt diameter and about 3.0 times the bolt diameter. Brief Description of the Invention
The object of the present invention is to align and fix of members of the isolation kit to reduce vibrations on the mounting members on the cylinder head.
The present invention proposes an isolation kit having a first isolation limiter and a second isolation limiter having respectively; a first body with a first support and, a second body with a second support which are formed hollow to dispose a bolt inside the first isolation limiter and the second isolation limiter providing fixing to a cylinder head. The first isolation limiter comprises at least two corresponding first arms to each other, extending from the first support and having a clip on a distal end of the first arm and; the second isolation limiter comprises at least two corresponding second arms to each other, extending from the second support and having a second slot on a distal end of the second arm to connect via snap-fit manner of the clip. Therefore, the isolation kit is preassembled on a suspended fuel rail assembly member in a snap-fitted manner.
In a possible embodiment of the present invention, the clip is in a V-shaped in a cross-section. Thus, the clip is attached in a snap-fit manner. The first arm and the V-shaped clip gives flexibility to fix the first isolation limiter.
In a possible embodiment of the present invention, the clip is formed extending outwardly from the first arm. Thus, the connection is realized from inside to outside of the second slot.
In another embodiment of the present invention, isolation kit having a first isolation limiter and a second isolation limiter having respectively; a first body with a first support and, a second body with a second support which are formed hollow to dispose a bolt inside the first isolation limiter and the second isolation limiter providing fixing to a cylinder head. The first isolation limiter comprises at least two corresponding first arms to each other, extending from the first support and having a first extension on a distal end of the first arm and; the second isolation limiter comprises at least two corresponding second arms to each other, extending from the second support and having a second extension on a distal end of the second arm to attach the first extension with an attaching means. Therefore, the isolation kit is preassembled on a suspended fuel rail assembly member in a fixed manner.
In a possible embodiment of the present invention, the first extension and the second extension are in Il-bended forms which are bended outwardly. Thus, an attaching means holds and fixes in a tight manner the first extension to the second extension. Also, the attaching is realized from an outside of the first arm and the second arm. In a possible embodiment of the present invention, the first extension and the second extension are in Il-bended forms which are bended inwardly. Thus, the attaching is realized from an inside of the first arm and the second arm.
In a possible embodiment of the present invention, the attaching means is a rubber band providing to attach the first extension and the second extension to each other. Thus, the rubber band easily attached to the first extension and the second extension.
In another embodiment of the invention, isolation kit having a first isolation limiter and a second isolation limiter having respectively; a first body with a first support and, a second body with a second support which are formed hollow to dispose a bolt inside the first isolation limiter and the second isolation limiter providing fixing to a cylinder head. The first isolation limiter comprises at least two corresponding first arms to each other, extending from the first support and having a first slot on a distal end of the first arm and; the second isolation limiter comprises at least two corresponding second arms to each other, extending from the second support and having a second slot on a distal end of the second arm; to provide attachment of the first isolation limiter to the second isolation limiter the isolation kit further comprises a holding clip providing attachment via passing protruded head parts of the holding clip from the first slot and from the second slot. Therefore, the isolation kit is preassembled on a suspended fuel rail assembly member in a fixed manner.
In a possible embodiment of the present invention, the holding clip comprises a body, at least two pins extending from the body and the head parts formed on the pin. Thus, a reliable mounting of the first arms to the second arms are realized.
Brief Description of the Figures
Figure 1 shows a first embodiment of the present invention with a snap-fit connection, in a demounted manner.
Figure 2 shows the first embodiment of the present invention with a snap-fit connection, in a mounted manner.
Figure 3 shows the first embodiment in a cross-sectional view taken from the figure 2.
Figure 4 shows a second embodiment of the present invention with a rubber band connection, in a demounted manner.
Figure 5 shows the second embodiment of the present invention with a rubber band connection, in a mounted manner. Figure 6 shows a third embodiment of the present invention with a holding clip connection, in a demounted manner.
Figure 7 shows the third embodiment of the present invention with a holding clip connection, in a mounted manner. Figure 8 shows the first embodiment of the present invention fixed on the cylinder head in a lateral view.
Figure 9 shows the second embodiment of the present invention fixed on the cylinder head in a lateral view.
Figure 10 shows the third embodiment of the present invention fixed on the cylinder head in a lateral view.
Reference Numbers and Signs
I Fuel charge assembly
10 Fuel injector cup
I I Fuel rail
12 Fuel inlet
13 Pressure sensor
20 Fuel rail assembly member
21 Extension
30 Cylinder head
31 Aperture
40 First isolation limiter
41 First body
42 First support
43 First arm
44 Clip
45 First slot
46 First extension
50 Second isolation limiter
51 Second body
52 Second support
53 Second arm
54 Second slot
55 Second extension 60 Holding clip
61 Body
62 Pin
63 Head part 70 Rubber band
80 Bolt
V1 : first vertical axis
V2: second vertical axis
Detailed Description of the Figures
The present invention proposes an isolation kit having vibration isolation apparatuses preventing vibration on a cylinder head (30) of a motor block and between a fuel charge assembly (1).
The fuel charge assembly (1) comprises a fuel rail (11) for conveying fuel from a fuel source to a fuel injector and therefore, to an internal combustion engine. A plurality of fuel injectors are mounted to the fuel rail (11) via fuel injector cups (10) to inject a metered quantity of fuel into the engine for combustion. A pressure sensor (13) is used to arrange pressure of the fuel and a fuel inlet (12) provides to intake the fuel. The fuel charge assembly (1) comprises the fuel injector, some mounting arrangements such as a fuel injector cup (10), mounting brackets and the fuel rail (11). The fuel rail (11) comprises a fuel rail assembly member (20) such as a mounting bracket which is providing to assemble the fuel rail (11 ) and therefore the fuel injector cup (10) to the cylinder head (30). As it can be seen from the mounted states of the isolation kit to the cylinder head (30) from the figures 8, 9 and 10; the cylinder head (30) has an aperture (31) to mount a bolt (80). An extension (21) of the fuel rail assembly member (20) is mounted to the cylinder head (30) by the bolt (70). An isolation kit is set on the bolt (80) and the extension (21). The isolation kit comprises a first isolation limiter (40) and a second isolation limiter (50) which are connected and fixed to each other.
According to the present invention, an isolation kit comprises the first isolation limiter (40) having a first body (41) with a first support (42) and the second isolation limiter (50) having a second body (51) with a second support (52). The first support (42) is formed on the first body (41) as extending from the first body (41) with a 90 degrees angel. Also, the same form applies to the second body (51) and the second support (52). The first support (42) and the second support (52) are in a planar and annular shape.
A first embodiment is shown in the figures 1 , 2 and 3. According to the first embodiment of the present invention, the first body (41) is in a hollow-cylindrical shape and the first support (42) extends from the first body (41). At least two corresponding first arms (43) extend from the first support (42) through the second isolation limiter (50). The first arms (43) have clips (44) at ends extending outwardly. The clip (44) is bended like V-shape, in a cross-section. The second body (51) is in a hollow-cylindrical shape and the second support (52) extends from the second body (51). At least two corresponding second arms (53) extend from the second support (52) through the first isolation limiter (40). The second arms (53) have second slots (54) at ends. To mount the first isolation limiter (40) to the second isolation limiter (50), firstly, a first vertical axis (v1) (center axis) of the first isolation limiter (40) and a second vertical axis (v2) (center axis) of the second isolation limiter (50) are aligned to each other. Each of the clips (44) are attached to each of the second slots (54) in a snap-fit manner. Therefore, the isolation kit is preassembled on the suspended fuel rail assembly member (20) in a snap-fitted manner by means of fixing the clips (44) in the second slots (54). A mounted state of the first embodiment isolation kit to the cylinder head (30) is given in the figure 8.
A second embodiment is shown in the figures 4 and 5. According to the second embodiment of the present invention, the first body (41) is in a hollow-cylindrical shape and the first support (42) extends from the first body (41). At least two corresponding first arms (43) extend from the first support (42) through the second isolation limiter (50). The second body (51) is in a hollow-cylindrical shape and the second support (52) extends from the second body (51). At least two corresponding second arms (53) extend from the second support (52) through the first isolation limiter (40). The first arms (43) have first extensions (46) and the second arms (53) have second extensions (55), preferably in a Il-bended forms in a cross-sectional view and bended outwardly.
To mount the first isolation limiter (40) to the second isolation limiter (50), a first vertical axis (v1) (center axis) of the first isolation limiter (40) and a second vertical axis (v2) (center axis) of the second isolation limiter (50) are aligned to each other. By using a rubber band (70) and the elasticity of the rubber band (70), the corresponding first arms (43) are fixed to the corresponding second arms (53). Therefore, the isolation kit is preassembled on the suspended fuel rail assembly member (20) with rubber bands (70) using the Il-bended attachment means as the first extensions (46) and the second extensions (55). A mounted state of the second embodiment isolation kit to the cylinder head (30) is given in the figure 9.
A third embodiment is shown in the figures 6 and 7. According to the third embodiment of the present invention, the first body (41) is in a hollow-cylindrical shape and the first support (42) extends from the first body (41). At least two corresponding first arms (43) extend from the first support (42) through the second isolation limiter (50). The second body (51) is in a hollow- cylindrical shape and the second support (52) extends from the second body (51). At least two corresponding second arms (53) extend from the second support (52) through the first isolation limiter (40). The first arms (43) have first slots (45) and the second arms (53) have second slots (54). The third embodiment of the isolation kit has a holding clip (60) to attach corresponding first arms (43) to the second arms (53). The holding clip (60) comprises a body (61) and two pins (62) at distal ends. Also, the pins (62) have protruded head parts (63).
To mount the first isolation limiter (40) to the second isolation limiter (50), a first vertical axis (v1) (center axis) of the first isolation limiter (40) and a second vertical axis (v2) (center axis) of the second isolation limiter (50) are aligned to each other. Each of the first arm (43) are attached and fixed to the each of the second arm (53) via the holding clip (60). The protruded head parts (63) of the pins (62) enters into the first slot (45) and the second slot (54) by pressing the holding clip (60) and fixes the holding clip (60) via click-fitted. Thus, the holding clip (60) can not be taken out easily. Therefore, the isolation kit is preassembled on the suspended fuel rail assembly member (20) with the first slots (45) and the second slots (54) by using the holding clips (60). A mounted state of the third embodiment isolation kit to the cylinder head (30) is given in the figure 10.
In a detailed description of the invention, during an operation of the engine, particularly a direct injection engine where fuel injection pressure are very high, dynamic forces exist that will generate unacceptable noise levels due to vibrations on the cylinder head (30). To prevent these vibrations and noises, an isolation kit according to the described above embodiments of the present invention, are used to prevent vibrations on the fuel charge assembly.

Claims

1. An isolation kit having a first isolation limiter (40) and a second isolation limiter (50) having respectively; a first body (41) with a first support (42) and, a second body (51) with a second support (52) which are formed hollow to dispose a bolt (80) inside the first isolation limiter (40) and the second isolation limiter (50) providing fixing to a cylinder head (30) characterized in that the first isolation limiter (40) comprises at least two corresponding first arms (43) to each other, extending from the first support (42) and having a clip (44) on a distal end of the first arm (43) and; the second isolation limiter (50) comprises at least two corresponding second arms (53) to each other, extending from the second support (52) and having a second slot (54) on a distal end of the second arm (53) to connect via snap-fit manner of the clip (44).
2. The isolation kit according to claim 1 , wherein the clip (44) is in a V-shaped in a cross-section.
3. The isolation kit according to claim 1 or 2, wherein the clip (44) is formed extending outwardly from the first arm (43).
4. An isolation kit having a first isolation limiter (40) and a second isolation limiter (50) having respectively; a first body (41) with a first support (42) and, a second body (51) with a second support (52) which are formed hollow to dispose a bolt (80) inside the first isolation limiter (40) and the second isolation limiter (50) providing fixing to a cylinder head (30) characterized in that the first isolation limiter (40) comprises at least two corresponding first arms (43) to each other, extending from the first support (42) and having a first extension (46) on a distal end of the first arm (43) and; the second isolation limiter (50) comprises at least two corresponding second arms (53) to each other, extending from the second support (52) and having a second extension (55) on a distal end of the second arm (53) to attach the first extension (46) with an attaching means.
5. The isolation kit according to claim 4, wherein the first extension (46) and the second extension (55) are in U-bended forms which are bended outwardly.
6. The isolation kit according to claim 4, wherein the first extension (46) and the second extension (55) are in U-bended forms which are bended inwardly.
7. The isolation kit according to claim 4 to 6, wherein the attaching means is a rubber band (70) providing to attach the first extension (46) and the second extension (55) to each other.
8. An isolation kit having a first isolation limiter (40) and a second isolation limiter (50) having respectively; a first body (41) with a first support (42) and, a second body (51) with a second support (52) which are formed hollow to dispose a bolt (80) inside the first isolation limiter (40) and the second isolation limiter (50) providing fixing to a cylinder head (30) characterized in that the first isolation limiter (40) comprises at least two corresponding first arms (43) to each other, extending from the first support (42) and having a first slot (45) on a distal end of the first arm (43) and; the second isolation limiter (50) comprises at least two corresponding second arms (53) to each other, extending from the second support (52) and having a second slot (54) on a distal end of the second arm (53); to provide attachment of the first isolation limiter (40) to the second isolation limiter (50), the isolation kit further comprises a holding clip (60) providing attachment via passing protruded head parts (63) of the holding clip (60) from the first slot (45) and from the second slot (54).
9. The isolation kit according to claim 7, wherein the holding clip (60) comprises a body (61), at least two pins (62) extending from the body (61) and the head parts (63) formed on the pin (62).
PCT/EP2021/078064 2020-10-13 2021-10-11 An isolation kit for a fuel charge assembly WO2022078965A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2020/16260A TR202016260A2 (en) 2020-10-13 2020-10-13 An isolation kit for a fuel charge assembly
TR2020/16260 2020-10-13

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WO2022078965A1 true WO2022078965A1 (en) 2022-04-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916098A1 (en) * 1999-04-09 2000-10-12 Bosch Gmbh Robert Fixture to secure a plate supporting a motor or gear to a housing has a two-part elastic de-coupling element which passes through an aperture in one component
US20090206218A1 (en) * 2008-02-18 2009-08-20 Stemco Lp Apparatus for Isolating a Sensor from Vibration
EP2495427A1 (en) * 2011-03-04 2012-09-05 Continental Automotive GmbH Coupling device
US8800534B2 (en) 2011-11-18 2014-08-12 Robert Bosch Gmbh Fuel rail mounting arrangement
US20160223133A1 (en) * 2015-02-03 2016-08-04 United Technologies Corporation Belleville washer nut plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916098A1 (en) * 1999-04-09 2000-10-12 Bosch Gmbh Robert Fixture to secure a plate supporting a motor or gear to a housing has a two-part elastic de-coupling element which passes through an aperture in one component
US20090206218A1 (en) * 2008-02-18 2009-08-20 Stemco Lp Apparatus for Isolating a Sensor from Vibration
EP2495427A1 (en) * 2011-03-04 2012-09-05 Continental Automotive GmbH Coupling device
US8800534B2 (en) 2011-11-18 2014-08-12 Robert Bosch Gmbh Fuel rail mounting arrangement
US20160223133A1 (en) * 2015-02-03 2016-08-04 United Technologies Corporation Belleville washer nut plate

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