CN202578994U - Fuel pressure regulator - Google Patents
Fuel pressure regulator Download PDFInfo
- Publication number
- CN202578994U CN202578994U CN 201220232413 CN201220232413U CN202578994U CN 202578994 U CN202578994 U CN 202578994U CN 201220232413 CN201220232413 CN 201220232413 CN 201220232413 U CN201220232413 U CN 201220232413U CN 202578994 U CN202578994 U CN 202578994U
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- China
- Prior art keywords
- fuel
- fuel pressure
- pressure
- valve
- pressure regulator
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- Expired - Fee Related
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Abstract
The utility model discloses a fuel pressure regulator which is formed by a shell body, a membrane, a spring, a fuel return valve, a pressure release valve, a fuel return pipe, a fuel inlet pipe and an air inlet pipe. A fuel return valve body is embedded in a central hole of the membrane, and an inner cavity of the fuel pressure regulator is divided into a fuel cavity and a fuel pressure regulation cavity by the fuel return valve body and the membrane. A fuel return valve core provided with a central through hole is connected with the fuel return pipe and is installed on the fuel cavity side of the shell body. A ball valve capable of being matched with the fuel return valve core is arranged on the fuel return valve body. The fuel cavity side of the shell body is further provided with the fuel inlet pipe and the pressure release valve. The fuel pressure regulation cavity side of the shell body is provided with the air inlet pipe connected with a vacuum chamber of an engine induction manifold. The fuel pressure regulator is simple in structure, can effectively regulate fuel pressure inside an engine fuel pipe, enables the engine to maintain a constant spray fuel pressure difference, and guarantees accurate control of fuel spraying quantity. The fuel pressure regulator can release pressure for residual fuel pressure in the fuel system through the pressure release valve when the engine is shut down, and facilitates maintenance of a fuel supply system.
Description
Technical field
The utility model relates to the fuel pressure regulator that is used for gasoline vehicle fuel oil supply system.
Background technique
Fuel pressure regulator is a component parts commonly used in the gasoline vehicle fuel oil supply system, and it is stable as to act on to play assurance system oil pressure and air-distributor pressure difference, makes gasoline injection amount depend on the opening time of oil sprayer uniquely.The fuel pressure regulator structure of using at present is as shown in Figure 1; During engine operation; The fuel pressure regulator diaphragm receives the acting in conjunction of fuel pressure, spring force, air-distributor vacuum pressure, and when diaphragm is upper and lower when bearing pressure and equating, diaphragm is in the equilibrium position.When air-distributor vacuum pressure descended, under force action, diaphragm moved up, and the scavenger valve aperture strengthens, and recirculating oil quantity increases, and system's fuel pressure descends; On the contrary, when air-distributor vacuum pressure rose, under force action, diaphragm moved down, and the scavenger valve aperture reduces, and recirculating oil quantity reduces, and system's fuel pressure rises; When engine stop working; Along with the further decline of system's fuel pressure, scavenger valve cuts out under the effect of spring force, with the acting in conjunction of electric fuel punp one way stop peturn valve under; Guarantee to preserve in the oil-fired system fuel oil of certain pressure, make things convenient for the starting smoothly next time of motor.But the fuel oil of remaining certain pressure makes motor when oil-fired system detects in the oil-fired system, need carry out the oil-fired system residual fuel oil earlier and discharge.At present, the method that discharges the oil-fired system residual fuel oil is: piloting engine makes its normal idle running, pulls up FP Fuel Pump Relay or fuel pump power line, flame-out naturally until motor, restarts motor 2-3 time.Not only time-consuming, the effort of the method for this release oil-fired system residual fuel oil has also caused fuel oil waste and environmental pollution.
Summary of the invention
The purpose of the utility model is to provide a kind of fuel pressure regulator simple in structure, and it can effectively regulate fuel pressure when engine operation, makes oil spout pressure reduction keep constant; When engine shutdown, can make oil-fired system preserve the fuel oil of certain pressure, motor is started smoothly next time; When oil-fired system detects, can effectively discharge residual fuel oil, make and detect safety, reliable, easy row.
For achieving the above object, the technical solution of the utility model is: a kind of fuel pressure regulator, form by housing, diaphragm, spring, scavenger valve, Decompression valves, return tube, oil inlet pipe and suction tude; The scavenger valve valve body is flush-mounted in the diaphragm center hole, with diaphragm the fuel pressure regulator inner chamber is divided into fuel chamber, two chambers in fuel pressure adjusting chamber; The scavenger valve spool that has central through bore is connected with return tube, is installed on fuel chamber one side body; Be furnished with the ball valve that can cooperate on the scavenger valve valve body with the scavenger valve spool; On fuel chamber one side body oil inlet pipe and Decompression valves are installed also; Fuel pressure is regulated on one side body of chamber the suction tude that links to each other with the engine intake manifold vacuum chamber is installed.
The utility model compared with prior art; Its remarkable advantage is: fuel chamber one side body is provided with Decompression valves; Said Decompression valves is a kind of normally closed hand-hydraulic switch valve, and when the engine fuel oil system proper functioning, Decompression valves is in closed condition; At this moment, the draining hole is interspersed on outlet of Decompression valves spool oil circuit and the valve body; When carrying out the oil-fired system detection; Open Decompression valves; Make on Decompression valves spool oil circuit outlet and the valve body draining hole site relative, certain pressure fuel oil remaining in the oil-fired system can directly be released into fuel tank through Decompression valves, has characteristics simple, energy-saving and emission-reduction.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is existing fuel pressure regulator structural representation.
Fig. 2 is the utility model fuel pressure regulator structural representation.
Fig. 3 is the utility model fuel pressure regulator pressure-relief valve structure schematic representation.
Embodiment
The utility model fuel pressure regulator structural representation is as shown in Figure 2.Form by housing (3), diaphragm (7), spring (4), scavenger valve (9), Decompression valves (1), return tube (10), oil inlet pipe (8) and suction tude (5); The valve body of scavenger valve (9) is flush-mounted in the center hole of diaphragm (7), with diaphragm (7) the fuel pressure regulator inner chamber is divided into fuel chamber (2), (6) two chambers in fuel pressure adjusting chamber; Scavenger valve (9) spool that has central through bore is connected with return tube (10), is installed on fuel chamber (2) one side bodies; Be furnished with the ball valve that can cooperate on scavenger valve (9) valve body with scavenger valve (9) spool; Oil inlet pipe (8) and Decompression valves (1) also are installed on fuel chamber (2) one side bodies; Fuel pressure is regulated on (6) one side bodies of chamber the suction tude (5) that links to each other with the engine intake manifold vacuum chamber is installed.
Said Decompression valves (1) is a kind of hand-hydraulic switch valve, and structural representation is as shown in Figure 3.Decompression valves spool (14) is a plunger, has oil circuit (15) on it, and oil circuit (15) import is along the spool axial direction, and outlet is along the spool radial direction; Valve body (13) inner cylindrical surface and spool (14) cylndrical surface precision-fit have radially draining hole (12) on the valve body (13), draining hole (12) are connected with drain mast (11).When oil circuit (15) outlet and draining hole (12) when the position is relative, certain pressure fuel oil remaining in the oil-fired system is released into fuel tank through fuel pressure regulator; When oil circuit (15) outlet and position, draining hole (12) were staggered, oil drain valve (1) was closed, and keeps system oil pressure.
Said Decompression valves (1) is a normally close valve, only when carrying out the oil-fired system detection, opens, to discharge the oil-fired system residual fuel oil.
Below in conjunction with the application implementation example of a kind of fuel pressure regulator in oil-fired system, the utility model is further specified.
During engine operation, the fuel pressure regulator Decompression valves cuts out, and diaphragm top receives the effect of spring force and air-distributor vacuum pressure, and the diaphragm below receives the effect of fuel pressure, bears pressure when equal when diaphragm is upper and lower, and diaphragm is in the equilibrium position; When air-distributor vacuum pressure descended, diaphragm moved up under upper and lower effect of making a concerted effort, and the scavenger valve aperture strengthens, and recirculating oil quantity increases, and system's fuel pressure descends; On the contrary, when air-distributor vacuum pressure rose, diaphragm moved down under upper and lower effect of making a concerted effort, and the scavenger valve aperture reduces, and recirculating oil quantity reduces, and system's fuel pressure rises, thereby maintenance oil-fired system fuel pressure and air-distributor pressure difference are constant.
When engine stop working, along with the decline of system's fuel pressure, scavenger valve cuts out under the effect of spring force, and this moment, Decompression valves also was in closed condition, preserves the fuel oil of certain pressure in the oil-fired system, makes things convenient for the starting smoothly next time of motor.
When engine shutdown carries out the oil-fired system detection, open Decompression valves, the fuel oil of remaining certain pressure is released into fuel tank through fuel pressure regulator in the oil-fired system.
Claims (2)
1. a fuel pressure regulator is characterized in that being made up of housing (3), diaphragm (7), spring (4), scavenger valve (9), Decompression valves (1), return tube (10), oil inlet pipe (8) and suction tude (5); Diaphragm (7) and the valve body that is flush-mounted in scavenger valve (9) in the diaphragm center hole with the fuel pressure regulator active chamber be divided into fuel chamber (2), fuel pressure is regulated (6) two chambers in chamber; Oil inlet pipe (8), return tube (10) and Decompression valves (1) are installed, the spool that the interior setting-in of return tube (10) matches with scavenger valve (9) spherical valve on fuel chamber (2) one side bodies; Fuel pressure is regulated on one side body of chamber the suction tude (5) that links to each other with the engine intake manifold vacuum chamber is installed.
2. a kind of fuel pressure regulator according to claim 1 is characterized in that Decompression valves (1) is normally closed hand-hydraulic switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220232413 CN202578994U (en) | 2012-05-23 | 2012-05-23 | Fuel pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220232413 CN202578994U (en) | 2012-05-23 | 2012-05-23 | Fuel pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578994U true CN202578994U (en) | 2012-12-05 |
Family
ID=47248412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220232413 Expired - Fee Related CN202578994U (en) | 2012-05-23 | 2012-05-23 | Fuel pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202578994U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678417A (en) * | 2012-05-23 | 2012-09-19 | 淮阴工学院 | Fuel oil pressure regulator |
| CN107061096A (en) * | 2017-05-08 | 2017-08-18 | 黑龙江圣邦投资咨询有限公司 | A kind of aero-engine fuel regulator fault detection method and device |
| CN110017870A (en) * | 2019-03-29 | 2019-07-16 | 山东钢铁集团日照有限公司 | A kind of differential pressure flow signal detection amplifying device |
-
2012
- 2012-05-23 CN CN 201220232413 patent/CN202578994U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678417A (en) * | 2012-05-23 | 2012-09-19 | 淮阴工学院 | Fuel oil pressure regulator |
| CN107061096A (en) * | 2017-05-08 | 2017-08-18 | 黑龙江圣邦投资咨询有限公司 | A kind of aero-engine fuel regulator fault detection method and device |
| CN110017870A (en) * | 2019-03-29 | 2019-07-16 | 山东钢铁集团日照有限公司 | A kind of differential pressure flow signal detection amplifying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130523 |