CN203412685U - Pressure wave damping type fuel oil system - Google Patents
Pressure wave damping type fuel oil system Download PDFInfo
- Publication number
- CN203412685U CN203412685U CN201320310882.2U CN201320310882U CN203412685U CN 203412685 U CN203412685 U CN 203412685U CN 201320310882 U CN201320310882 U CN 201320310882U CN 203412685 U CN203412685 U CN 203412685U
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- oil
- voltage stabilizer
- damping
- pressure
- hole pipe
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Abstract
The utility model aims to provide a pressure wave damping type fuel oil system. The pressure wave damping type fuel oil system comprises an oil tank, a voltage stabilizer and an oil sprayer, wherein the oil tank is sequentially connected with a filter, an oil conveying pump and a high-pressure oil pump and then is connected with the voltage stabilizer; the voltage stabilizer is connected with the oil sprayer; the voltage stabilizer is further directly communicated with the oil tank by an oil returning pipe; the oil returning pipe is provided with a safety valve; the voltage stabilizer comprises a voltage stabilizer shell; the voltage stabilizer shell is internally provided with a hole pipe and a damping outer cavity is formed between the voltage stabilizer shell and the hole pipe; a damping inner cavity is formed in the hole pipe; the hole pipe is provided with damping holes with different sizes; and the damping outer cavity is connected with a load. According to the pressure wave damping type fuel oil system, high-frequency pressure fluctuation and hydraulic impact can be effectively weakened and absorbed, the fluctuation of an oil spraying amount of each cycle is reduced, the stability of the circulating oil spraying amount of an engine is improved, the mutual influences between cylinders of the engine are weakened and the working consistency of all the cylinders of the engine is increased.
Description
Technical field
The utility model relates to a kind of fuel of internal combustion engine system.
Background technique
Electronic control injection technology has experienced from the then transformation of the automatically controlled oil-fired system of m-pressure type of position model electric control fuel system, realized the fuel system of pulsed to the transformation of the fuel system of pressure accumulation type, and along with global energy is day by day exhausted, various countries are also more and more harsher to the requirement of the discharge of diesel engine and Economy, and this just impels the core system as diesel engine---the constantly bringing forth new ideas and optimize of oil-fired system.
It is adjustable and can continue to keep high pressure conditions that electric-controlled co-rail oil-fired system has realized injection pressure, the generation of injection pressure and injection process separate, freely the controlling of injection timing and injection rate waveform.High pressure oil pump in electric-controlled co-rail oil-fired system is under the drive of diesel engine, and with certain speed, than continuous high pressure fuel being transported in common rail chamber (being public cavity volume), high pressure fuel is sent into the oil sprayer of each cylinder again by common rail chamber.Within the pressure in rail chamber maintains certain number range altogether, constantly to oil sprayer, provide high pressure fuel.But in existing technology, because the dither formula fuel feeding of high pressure oil pump is in common rail chamber, the hydraulic shock of each cylinder commencement of fuel injection and end oil spout is simultaneously fed back again among common rail chamber, cause the pressure surge in common rail chamber remarkable, affect the stable of cycle of engine fuel injection quantity, make the every circulating fuel injection quantity of each cylinder inconsistent, cause the unbalanced of each cylinder power output.
Summary of the invention
The purpose of this utility model is to provide and can effectively weakens and absorbing high-frequency pressure surge and hydraulic shock, reduce the fluctuation of the fuel injection quantity of every circulation, improve the stability of cycle of engine fuel injection quantity, weaken influencing each other between each cylinder of motor, increase the conforming pressure wave damped type oil-fired system of each cylinder working of motor.
The purpose of this utility model is achieved in that
The utility model pressure wave damped type oil-fired system, it is characterized in that: comprise fuel tank, voltage stabilizer, oil sprayer, fuel tank connects voltage stabilizer after connecting successively filter cleaner, oil transfer pump, high pressure oil pump, voltage stabilizer connects oil sprayer, voltage stabilizer is also directly communicated with fuel tank by return tube, mounting safety valve on return tube; Described voltage stabilizer comprises voltage stabilizer housing, and mounting hole pipe in voltage stabilizer housing forms damping exocoel between voltage stabilizer housing and hole pipe, and Kong Guanli forms damping inner chamber, the upper damping hole differing in size that arranges of hole pipe, and damping exocoel is connected with load.
The utility model can also comprise:
1, the damping port differing in size is set on voltage stabilizer housing, the liquid differing in size is installed respectively on each damping port and is held damper.
Advantage of the present utility model is: pressure wave damped type oil-fired system, according to total cylinder number of oil-fired system and the requirement of actual conditions, coupling damping hole, damping port and liquid hold damper, make it weaken the pressure surge of fuel oil.Due to the effect of pressure stabilizing cavity, weakened the pressure surge of oil-fired system, also weakened the compression shock of oil sprayer commencement of fuel injection and end oil spout simultaneously, increased the stability of circulating fuel injection quantity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model mode of execution one;
Fig. 2 is the structural representation of the utility model mode of execution two.
Embodiment
Below in conjunction with accompanying drawing, for example the utility model is described in more detail:
Mode of execution one:
In conjunction with Fig. 1, it mainly comprises fuel tank 1 pressure wave damped type oil-fired system, filter cleaner 2, oil transfer pump 3, high pressure oil pump 4, high-pressure oil pipe 5, pressure stabilizing cavity 6, hole pipe 7, damping hole 8, safety valve 9, electric-controlled fuel injector 10, return tube 11.After oil transfer pump 3 filters the fuel oil suction filter of 1 li of fuel tank 2 and with certain fluctuation pressure infeed high pressure oil pump 4, high pressure oil pump 4 pumps into pressure stabilizing cavity 6 because the pressurization of reciprocating piston makes fuel oil with the pulsation form high-pressure oil pipe 5 of flowing through, pressure in pressure stabilizing cavity 6 surpasses the setting pressure of safety valve 9, safety valve will be opened, reduce the pressure of pressure stabilizing cavity 6, fuel oil flows back to fuel tank 1 through return tube 11; The interior hole pipe 7 that added of pressure stabilizing cavity 6, has arranged the different damping hole of diameter 8 on hole pipe 7.Hole pipe 7 is divided into two parts by pressure stabilizing cavity 6, high pressure fuel can only enter by damping hole 8 exocoel of hole pipe 7, enter again electric-controlled fuel injector 10, the pulsed fuel system of high pressure oil pump makes the high pressure fuel that enters pressure stabilizing cavity 6 be fluctuation status, the exocoel that high pressure fuel enters hole pipe 7 is by damping hole 8, due to the damping function of damping hole 8, the fuel pressure that makes hole manage 7 inner chambers and exocoel fluctuates weakened.
Mode of execution two:
It mainly comprises fuel tank 1 pressure wave damped type oil-fired system, filter cleaner 2, oil transfer pump 3, high pressure oil pump 4, high-pressure oil pipe 5, pressure stabilizing cavity 6, hole pipe 7, damping hole 8, safety valve 9, electric-controlled fuel injector 10, return tube 11.After oil transfer pump 3 filters the fuel oil suction filter of 1 li of fuel tank 2 and with certain fluctuation pressure infeed high pressure oil pump 4, high pressure oil pump 4 pumps into pressure stabilizing cavity 6 because the pressurization of reciprocating piston makes fuel oil with the pulsation form high-pressure oil pipe 5 of flowing through, pressure in pressure stabilizing cavity 6 surpasses the setting pressure of safety valve 9, safety valve will be opened, reduce the pressure of pressure stabilizing cavity 6, fuel oil flows back to fuel tank 1 through return tube 11; Pressure stabilizing cavity 6 is interior has added hole pipe 7, on hole pipe 7, has offered damping hole 8, the arranged around of pressure stabilizing cavity 6 damping port 12 and liquid hold damper 13.Hole pipe 7 is separated into two parts by pressure stabilizing cavity 6, from high pressure oil pump 4, enter in the advanced hand-hole pipe 7 of high-pressure pulsating fuel oil of pressure stabilizing cavity 6, and hole pipe 7 has been arranged damping hole 8 according to the pulsation feature of high pressure oil pump 4, high pressure fuel can only enter the chamber hole pipe 7 in the chamber in hole pipe 7 by damping hole 8, thereby the pulsation high pressure fuel having weakened from high pressure oil pump 4 by damping hole 8 enters the chamber outside hole pipe 7, and the hydraulic shock of oil sprayer commencement of fuel injection and end oil spout is by damping hole 8, liquid holds the damping of damper 13 and damping port 12, make hydraulic shock weakened fast, thereby guaranteed the stable of pressure stabilizing cavity 6 internal pressures, and then the stability of raising circulating fuel injection quantity.
Claims (2)
1. pressure wave damped type oil-fired system, it is characterized in that: comprise fuel tank, voltage stabilizer, oil sprayer, fuel tank connects voltage stabilizer after connecting successively filter cleaner, oil transfer pump, high pressure oil pump, voltage stabilizer connects oil sprayer, voltage stabilizer is also directly communicated with fuel tank by return tube, mounting safety valve on return tube; Described voltage stabilizer comprises voltage stabilizer housing, and mounting hole pipe in voltage stabilizer housing forms damping exocoel between voltage stabilizer housing and hole pipe, and Kong Guanli forms damping inner chamber, the upper damping hole differing in size that arranges of hole pipe, and damping exocoel is connected with load.
2. pressure wave damped type oil-fired system according to claim 1, is characterized in that: the damping port differing in size is set on voltage stabilizer housing, the liquid differing in size is installed respectively on each damping port and is held damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320310882.2U CN203412685U (en) | 2013-05-31 | 2013-05-31 | Pressure wave damping type fuel oil system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320310882.2U CN203412685U (en) | 2013-05-31 | 2013-05-31 | Pressure wave damping type fuel oil system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412685U true CN203412685U (en) | 2014-01-29 |
Family
ID=49975578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320310882.2U Expired - Fee Related CN203412685U (en) | 2013-05-31 | 2013-05-31 | Pressure wave damping type fuel oil system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321806A (en) * | 2013-05-31 | 2013-09-25 | 哈尔滨工程大学 | Pressure wave damping type fuel system |
-
2013
- 2013-05-31 CN CN201320310882.2U patent/CN203412685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321806A (en) * | 2013-05-31 | 2013-09-25 | 哈尔滨工程大学 | Pressure wave damping type fuel system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20160531 |