CN205172786U - A fuel pressure prevents transferring device for high pressure fuel pump - Google Patents
A fuel pressure prevents transferring device for high pressure fuel pump Download PDFInfo
- Publication number
- CN205172786U CN205172786U CN201520949960.2U CN201520949960U CN205172786U CN 205172786 U CN205172786 U CN 205172786U CN 201520949960 U CN201520949960 U CN 201520949960U CN 205172786 U CN205172786 U CN 205172786U
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- fuel pressure
- fuel
- pressure
- adjustment nail
- accumulation valve
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Abstract
The utility model provides a fuel pressure prevents transferring device for high pressure fuel pump, including pressure accumulation valve case and plunger casing, and the plunger casing is located the below of pressure accumulation valve case, wherein, the inside of pressure accumulation valve case is provided with fuel pressure adjustment nail and pressure accumulation valve, and this fuel pressure adjustment nail is located the top of pressure accumulation valve case, and the pressure accumulation valve is then be located the below of fuel pressure adjustment nail. Owing to adopted above -mentioned technique, the utility model discloses a follow closely the adjustment of " one " word screw formula fuel pressure through in the wrong income pressure accumulation valve case of screw, or adopt forced adjustment nail directly to impress, utilize the purpose that reaches regulating controlling fuel pressure of touching of the inside ball -type check valve of its and pressure accumulation valve simultaneously.
Description
Technical field
The utility model relates to vehicle body fittings field, particularly relates to the anti-tune device of a kind of fuel pressure for high pressure fuel pump.
Background technique
Along with the raising of people's living standard and the fast development of automobile industry, the utilization rate of automobile has reached unprecedented height.But the fuel pressure control mechanism of existing high pressure fuel pump does not have anti-tune device, and so just there are the following problems:
1, fuel pressure is higher than setting value: fuel blow situation appears in each fay surface sealant place that may occur in oil circuit; Meanwhile, Amount of actual oil supply causes vehicle to occur overrich phenomenon higher than setting value, affects exhaust emissions and even causes flame-out.
2, fuel pressure is lower than setting value: Amount of actual oil supply causes vehicle to occur rare phenomenon lower than setting value, causes power performance deficiency even to cause the potential safety hazards such as flame-out.
Model utility content
In order to solve the problem, the utility model provides a kind of fuel pressure for high pressure fuel pump anti-tune device, by " one " word screw-type fuel pressure adjustment nail by being threaded in accumulator valve housing, and reach by touching of the ball type check valve with accumulator valve the object that adjustment controls fuel pressure.
The above-mentioned anti-tune device of a kind of fuel pressure for high pressure fuel pump, comprise accumulator valve housing and plunger housing, described plunger housing is positioned at the below of accumulator valve housing; Wherein, the inside of described accumulator valve housing is provided with fuel pressure adjustment nail and accumulator valve, and described fuel pressure adjustment nail is positioned at the top of accumulator valve housing, and described accumulator valve is positioned at the below of fuel pressure adjustment nail.
In said apparatus, described accumulator valve housing is interfixed by bolt and plunger housing.
In said apparatus, described fuel pressure adjustment nail is forced adjustment nail.
In said apparatus, described fuel pressure adjustment nail is " one " word screw-type adjustment nail, and the upper surface of described fuel pressure adjustment nail is coated with bonding layer.
Advantage of the present utility model and beneficial effect are: the utility model provides the anti-tune device of a kind of fuel pressure for high pressure fuel pump, by the adjustment of " one " word screw-type fuel pressure is followed closely by being threaded in accumulator valve housing, or adopt forced adjustment to follow closely directly press-in, utilize it to touch the object reaching and adjust and control fuel pressure with accumulator valve inside ball type check valve simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the anti-tune device of fuel pressure adopting forced adjustment nail in the utility model;
Fig. 2 is the A-A generalized section of the anti-tune device of Fig. 1 intermediate fuel oil pressure;
Fig. 3 is the structural representation of the anti-tune device of fuel pressure adopting " one " word screw-type adjustment nail.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
Embodiment one:
As depicted in figs. 1 and 2, the utility model describes the anti-tune device of a kind of fuel pressure for high pressure fuel pump, comprise accumulator valve housing 1 and plunger housing 2, and plunger housing 2 is positioned at the below of accumulator valve housing 1;
Wherein, be provided with fuel pressure adjustment nail 3 and accumulator valve 4 in the inside of accumulator valve housing 1, this fuel pressure adjustment nail 3 is positioned at the top of accumulator valve housing 1, and accumulator valve 4 is then positioned at the below of fuel pressure adjustment nail 3.
Preferably, above-mentioned accumulator valve housing 1 is interfixed by bolt 5 and plunger housing 2, thus enhances the stability of device entirety.
Meanwhile, fuel pressure adjustment nail 3 is forced adjustment nail; Owing to employing the mode of press-in, therefore fuel pressure adjustment nail 3 head can be designed as the shape that instrument can not be used to adjust, thus reach domestic consumer cannot from the object of Row sum-equal matrix.
Embodiment two:
As shown in Figure 3, substantially identical with said structure, have employed " one " word screw-type adjustment nail unlike fuel pressure adjustment nail 3, and surface coverage there is bonding layer 6 thereon; Namely use the form of packing material to be covered by existing fuel pressure adjustment nail 3, thus simplify existing structure, reach the object reduced costs.
Above two kinds of embodiments are only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1., for the anti-tune device of fuel pressure of high pressure fuel pump, comprise accumulator valve housing and plunger housing, described plunger housing is positioned at the below of accumulator valve housing; It is characterized in that, the inside of described accumulator valve housing is provided with fuel pressure adjustment nail and accumulator valve, and described fuel pressure adjustment nail is positioned at the top of accumulator valve housing, and described accumulator valve is positioned at the below of fuel pressure adjustment nail.
2. the anti-tune device of a kind of fuel pressure for high pressure fuel pump as claimed in claim 1, it is characterized in that, described accumulator valve housing is interfixed by bolt and plunger housing.
3. the anti-tune device of a kind of fuel pressure for high pressure fuel pump as claimed in claim 1, is characterized in that, described fuel pressure adjustment nail is followed closely for forced adjustment.
4. the anti-tune device of a kind of fuel pressure for high pressure fuel pump as claimed in claim 1, is characterized in that, described fuel pressure adjustment nail is " one " word screw-type adjustment nail, and the upper surface of described fuel pressure adjustment nail is coated with bonding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520949960.2U CN205172786U (en) | 2015-11-25 | 2015-11-25 | A fuel pressure prevents transferring device for high pressure fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520949960.2U CN205172786U (en) | 2015-11-25 | 2015-11-25 | A fuel pressure prevents transferring device for high pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172786U true CN205172786U (en) | 2016-04-20 |
Family
ID=55736788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520949960.2U Active CN205172786U (en) | 2015-11-25 | 2015-11-25 | A fuel pressure prevents transferring device for high pressure fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172786U (en) |
-
2015
- 2015-11-25 CN CN201520949960.2U patent/CN205172786U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |