CN102678417A - Fuel oil pressure regulator - Google Patents
Fuel oil pressure regulator Download PDFInfo
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- CN102678417A CN102678417A CN2012101606908A CN201210160690A CN102678417A CN 102678417 A CN102678417 A CN 102678417A CN 2012101606908 A CN2012101606908 A CN 2012101606908A CN 201210160690 A CN201210160690 A CN 201210160690A CN 102678417 A CN102678417 A CN 102678417A
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- oil
- valve
- fuel oil
- fuel
- pressure regulator
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Abstract
The invention discloses a fuel oil pressure regulator consisting of a shell, a membrane, a spring, an oil return valve, a pressure release valve, an oil return pipe, an oil inlet pipe and a gas inlet pipe; the valve body of the oil return valve is embedded in the central hole of the membrane to divide the inner cavity of the fuel oil pressure regulator into a fuel oil cavity and a fuel oil pressure regulation cavity with the membrane; the valve core of the oil return valve provided with a central through hole is connected with the oil return pipe and is installed on the shell on one side of the fuel oil cavity; a ball valve capable of being matched with the valve core of the oil return valve is arranged on the valve body of the oil return valve; the oil inlet pipe and the pressure release valve are also installed on the shell on one side of the fuel oil cavity; and the gas inlet pipe connected with a vacuum chamber of an engine intake manifold is installed on the shell on one side of the fuel oil pressure regulation cavity. The fuel oil pressure regulator disclosed by the invention is simple in structure and is capable of effectively regulating the fuel oil pressure in the engine fuel oil pipe to keep a constant oil spray pressure difference for the engine and guarantee the accurate control of the oil spray quantity, and the fuel oil pressure regulator disclosed by the invention can release the residual oil pressure in the fuel oil system through the pressure release valve when the engine is stopped to provide convenience for maintaining a fuel oil supply system.
Description
Technical field
The present invention relates to be used for the fuel pressure regulator of 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 object of the present invention is to provide a kind of fuel pressure regulator simple in structure, 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, technical solution of the present invention 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 present invention 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 present invention is described in further detail.
Description of drawings
Fig. 1 is existing fuel pressure regulator structural representation.
Fig. 2 is a fuel pressure regulator structural representation of the present invention.
Fig. 3 is a fuel pressure regulator pressure-relief valve structure schematic representation of the present invention.
Embodiment
Fuel pressure regulator structural representation of the present invention 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 (3), with diaphragm (3) 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 draining hole (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 present invention 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 |
|---|---|---|---|
| CN2012101606908A CN102678417A (en) | 2012-05-23 | 2012-05-23 | Fuel oil pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101606908A CN102678417A (en) | 2012-05-23 | 2012-05-23 | Fuel oil pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102678417A true CN102678417A (en) | 2012-09-19 |
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ID=46810854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101606908A Pending CN102678417A (en) | 2012-05-23 | 2012-05-23 | Fuel oil pressure regulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN102678417A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677428A (en) * | 2017-10-30 | 2018-02-09 | 西北橡胶塑料研究设计院有限公司 | One kind rolls rubber diaphragm seal tightness test frock |
| CN109488502A (en) * | 2018-09-28 | 2019-03-19 | 潍柴重机股份有限公司 | The pressure releasing method of high-pressure oil passage after a kind of engine misses |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485436Y (en) * | 2001-07-13 | 2002-04-10 | 哈尔滨志阳汽车电气股份有限公司 | Fuel pressure regulater |
| CN1534184A (en) * | 2003-03-28 | 2004-10-06 | �ִ��Զ�����ʽ���� | Fuel oil discharge mechanism in fuel oil pipeline |
| CN202578994U (en) * | 2012-05-23 | 2012-12-05 | 淮阴工学院 | Fuel pressure regulator |
-
2012
- 2012-05-23 CN CN2012101606908A patent/CN102678417A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485436Y (en) * | 2001-07-13 | 2002-04-10 | 哈尔滨志阳汽车电气股份有限公司 | Fuel pressure regulater |
| CN1534184A (en) * | 2003-03-28 | 2004-10-06 | �ִ��Զ�����ʽ���� | Fuel oil discharge mechanism in fuel oil pipeline |
| CN202578994U (en) * | 2012-05-23 | 2012-12-05 | 淮阴工学院 | Fuel pressure regulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677428A (en) * | 2017-10-30 | 2018-02-09 | 西北橡胶塑料研究设计院有限公司 | One kind rolls rubber diaphragm seal tightness test frock |
| CN109488502A (en) * | 2018-09-28 | 2019-03-19 | 潍柴重机股份有限公司 | The pressure releasing method of high-pressure oil passage after a kind of engine misses |
| CN109488502B (en) * | 2018-09-28 | 2020-11-20 | 潍柴重机股份有限公司 | Pressure relief method for high-pressure oil way after engine flameout |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120919 |