CN111852706A - Cooling channel for fuel injector - Google Patents
Cooling channel for fuel injector Download PDFInfo
- Publication number
- CN111852706A CN111852706A CN202010335125.5A CN202010335125A CN111852706A CN 111852706 A CN111852706 A CN 111852706A CN 202010335125 A CN202010335125 A CN 202010335125A CN 111852706 A CN111852706 A CN 111852706A
- Authority
- CN
- China
- Prior art keywords
- cooling channel
- air
- injector
- ejector
- section
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 39
- 239000000446 fuel Substances 0.000 title abstract description 17
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/08—Injectors with heating, cooling, or thermally-insulating means with air cooling
Abstract
The invention relates to a cooling passage for a fuel injector. The invention relates to a cooling channel (101) for an injector (102). The cooling channel (101) comprises a flow path (101 a) adapted to receive air from a source (200) and at least one section (101 b) of the flow path (101 a), said section (101 b) being adapted to deliver air onto the injector (102). The control unit (300) controls the flow of air into the cooling channel (101) and the flow of air from the section (101 b) to the ejector (102).
Description
Technical Field
The invention relates to a cooling channel for a fuel injector.
Background
The fuel injector is the component of the fuel injection system responsible for the final stages of fuel delivery. High pressure fuel is delivered to the injectors, which are activated by an engine control unit or fuel injector control module. When activated, the injector immediately opens a valve that allows a precise amount of fuel to be sprayed. Although fuel injection systems may have a single injector, i.e. a centre-point injection, or several injectors, i.e. a multi-port injection, and the injectors vary somewhat in design between applications, they all perform this same basic function.
The prior art patent application US 6192677B 1 discloses an apparatus and a method for the after-treatment of exhaust gases from an internal combustion engine operating with excess air. The injection valve of the reducing agent metering device is enclosed in a double-walled valve holding element which is directly connected to the exhaust gas line. It is thereby possible to blow charge air into the air gap between the outer wall and the inner wall of the valve holding element and thus to cool at least those parts of the injection valve which are in close proximity to the exhaust gas.
Drawings
Various modes of the invention are disclosed in detail in the specification and illustrated in the accompanying drawings, wherein:
FIG. 1 illustrates a cooling passage and a fuel injector according to an embodiment of the invention; and
FIG. 2 illustrates a top view of a cooling channel according to an embodiment of the present invention.
Detailed Description
FIG. 1 illustrates a cooling passage 101 for a fuel injector 102 according to an embodiment of the present disclosure. The cooling channel 101 for the ejector 102 comprises a flow path 101a adapted to receive air from the source 200 and at least one section 101b in the flow path 101a, said section 101b being adapted to deliver air onto the ejector 102. Here, the flow path 101a is sealed at one end, and the other end is connected to the source 200.
In the cooling passage 101, the control unit 300 controls the flow of air. The control unit 300 also controls the duration of the air in the cooling channel 101. The control unit 300 determines the amount of air to be sent to the cooling passage 101. In addition, the control unit 300 maintains the pressure, flow and duration of the air according to the heating temperature of the fuel injector 102. The control unit 300 controls the flow of air onto the ejector 102. The amount of air directed onto the ejector 102 is based on the heating temperature of the ejector 102.
In the cooling channel 101, the source 200 is an air chamber. The source contains air at a temperature. For example, the air can have a lower temperature sufficient to cool the injector 102. The air chamber has air to be flowed into the cooling passage 101. The source 200 is not limited to an air chamber, but to a device that holds air and is known to those skilled in the art. For example, the source 200 can be an intake manifold of an engine or the like. According to an embodiment of the present disclosure, the source is mounted on the injector 102 by a clamp.
FIG. 2 illustrates a top view of a cooling channel 101 according to an embodiment of the present disclosure. In the disclosure disclosed above, the at least one section 101b is at least one of a perforation, a hole, a gap, and an opening. The section 101b is here not limited to any of the terms disclosed above, but to a device that allows air to flow onto the ejector 102 and is known to the person skilled in the art. The sections 101b are not limited to any particular number and are made as desired. Air from section 101b flows onto ejector 102 in a direction adjusted based on the demand, and the air flow is controlled by control unit 300.
According to an embodiment of the present disclosure, the cooling channel 101 is attached to the fuel injector 102 by a clamping device 101 c. The clamping device 101c is a fastening means to hold or secure objects tightly together by application to prevent movement or separation. The clamping device 101c is also used to position the component during construction. The cooling passage 101 can accommodate multiple fuel injectors 102 simultaneously to cool all of the injectors 102 simultaneously.
According to an embodiment of the present disclosure, in the cooling passage 101, a valve is located between the source 200 and the flow path 101 a. The control unit 300 controls opening and closing of valves for transferring cool air from the source 200 into the flow path 101 a. The purpose of the valve is to ensure the timing and duration of air from the source 200 to the flow path 101 a.
The cooling passage 101 is mounted to the injector 102. The cooling passage 101 is an external passage to externally cool the ejector 102 by flowing air over the ejector 102. The air flowing into the cooling passage 101 is forced onto the injector 102 so that it cools the components of the injector 102. The cooling passage 101 externally surrounds the fuel injector 102 such that air from the section 200 is directed to a sub-component of the injector 102.
In the disclosure disclosed above, the concept of the cooling passage 101 is to reduce or limit the temperature on a sub-component (e.g., solenoid) of the injector 102. In other words, this is one way to protect temperature sensitive sub-components and thus injector 102 from overheating. Here, forced air cooling is used to speed the cooling rate or limit the temperature rise in the ejector 102.
In the context of the present disclosure, "adapted to" or "arranged to" refers to a technical capability or technical capacity of a component used in relation to the term "adapted to" or "arranged to" to implement or perform a particular action or actions when required. Furthermore, the use of the terms 'adapted to' or 'arranged' herein refers to the normal technical capability or technical capacity of a component as conferred by the design or structure or composition of the component, and does not refer to any particular or unrelated capability or capacity beyond the normal technical capability or technical capacity. Therefore, a solution to this problem is required.
It should be understood that the embodiments explained in the above description are only illustrative and do not limit the scope of the present invention. Many other modifications and variations of such embodiments, as well as those explained in the description, are contemplated. The scope of the invention is limited only by the scope of the claims.
Claims (8)
1. A cooling channel (101) for an injector (102), the cooling channel (101) comprising:
a flow path (101 a) adapted to receive air from a source (200); and
at least one section (101 b) in the flow path (101 a), the section (101 b) being adapted to deliver the air onto the ejector (102).
2. The cooling channel (101) according to claim 1, wherein the flow of air into the cooling channel (101) is controlled by a control unit (300).
3. The cooling channel (101) according to claim 2, wherein the control unit (300) controls the flow of air onto the ejector (102).
4. The cooling channel (101) according to claim 1, wherein the source (200) is an air chamber.
5. The cooling channel (101) of claim 1, wherein the at least one section (101 b) is at least one of a perforation, a hole, a gap, and an opening.
6. The cooling channel (101) according to claim 1, wherein the cooling channel (101) is attached to the injector (102) by a clamping means (101 c).
7. The cooling channel (101) according to claim 1, wherein the cooling channel (101) is mounted on the ejector (102).
8. The cooling channel (101) according to claim 1, wherein a valve is located between the source (200) and the flow path (101 a).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201941016398 | 2019-04-25 | ||
| IN201941016398 | 2019-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852706A true CN111852706A (en) | 2020-10-30 |
Family
ID=72985115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010335125.5A Pending CN111852706A (en) | 2019-04-25 | 2020-04-24 | Cooling channel for fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852706A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2381804A (en) * | 1941-01-30 | 1945-08-07 | Bendix Aviat Corp | Cooling system for fuel injection nozzles |
| JPS5853671A (en) * | 1981-09-10 | 1983-03-30 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Cooling device for fuel injection valve arranged to internal combustion engine with suction pipe |
| DE3905254A1 (en) * | 1988-03-02 | 1989-09-14 | Volkswagen Ag | Cooling device for fuel injection valves of an internal combustion engine |
| US5927254A (en) * | 1996-01-25 | 1999-07-27 | Denso Corporation | Intake duct and intake system for internal combustion engine |
-
2020
- 2020-04-24 CN CN202010335125.5A patent/CN111852706A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2381804A (en) * | 1941-01-30 | 1945-08-07 | Bendix Aviat Corp | Cooling system for fuel injection nozzles |
| JPS5853671A (en) * | 1981-09-10 | 1983-03-30 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Cooling device for fuel injection valve arranged to internal combustion engine with suction pipe |
| DE3905254A1 (en) * | 1988-03-02 | 1989-09-14 | Volkswagen Ag | Cooling device for fuel injection valves of an internal combustion engine |
| US5927254A (en) * | 1996-01-25 | 1999-07-27 | Denso Corporation | Intake duct and intake system for internal combustion engine |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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