WO2013163961A1 - 一种储能式高压电子燃油泵、供油装置及其应用方法 - Google Patents
一种储能式高压电子燃油泵、供油装置及其应用方法 Download PDFInfo
- Publication number
- WO2013163961A1 WO2013163961A1 PCT/CN2013/075166 CN2013075166W WO2013163961A1 WO 2013163961 A1 WO2013163961 A1 WO 2013163961A1 CN 2013075166 W CN2013075166 W CN 2013075166W WO 2013163961 A1 WO2013163961 A1 WO 2013163961A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- energy storage
- oil
- plunger
- fuel pump
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
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- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/04—Pumps peculiar thereto
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/08—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder
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- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
Definitions
- the invention belongs to the technical field of engines, and in particular relates to a spark-ignition engine in-cylinder direct fuel injection system.
- direct injection The way in which fuel is injected directly into the spark-ignition engine cylinder is called direct injection. Due to the good economics of the direct injection engine, it is an important development direction of the engine in the future. The key to direct injection combustion is the fuel supply system. The system's maximum requirements for engine combustion, performance and emissions, low cost and ease of application are the goals pursued by direct injection technology.
- GDI gasoline direct injection system
- Most of the direct injection systems used in passenger car engines use the gasoline common rail technology route.
- the pressure in the fuel rail is usually between 8-20 MPa.
- the means of establishing rail pressure relies primarily on a mechanical piston pump with electromagnetic control that requires cam actuation and that the engine needs to be redesigned during installation.
- the mechanical GDI high pressure pump has the following problems:
- the fuel is repeatedly heated, and the low pressure diaphragm (MMD) is double damaged by temperature and alternating pressure;
- the above problems and contradictions are inherent in the current GDI mechanical pump, completely solving the technical route that needs to change the pump oil.
- the oil is supplied by an electronic fuel pump, the above problem does not exist.
- Advantages of the electronic oil pump include: High pressure can be established before the engine is started; the oil rail volume can be increased without restriction or a buffer can be introduced, so that the pressure fluctuation of the oil rail is greatly reduced to achieve constant pressure injection; Oil supply required; oil cut condition can completely stop working; oil pump work has little effect on FUEL-LINE; pump body is independent of engine, can be installed arbitrarily, easy to produce and after-sales service; Electronic oil pump (electric oil pump) It is difficult to supply fuel pressure of 8MPa or more.
- the built-in pressure range of the rotary electronic fuel pump is not more than 3 MPa.
- the pressure that can be achieved with a rotary motor driven plunger pump is theoretically not different from the mechanical one, but the efficiency is lower than the mechanical direct drive and the cost is higher. If the cam mechanism is not used, the linear motor reciprocating motion directly drives the plunger oil pump, and the known disclosed solution can only be loaded in a single pass to cause energy conversion effect.
- the low utilization rate is low, and achieving high pressure results in a large volume and high cost.
- the object of the present invention is to use the electric energy reciprocating direct drive device and the energy storage principle to release the full-phase functional quantity in a partial phase to improve the transient energy density to the electric power driving device. , increase pump oil pressure.
- An energy storage high-pressure electronic fuel pump includes an electromagnetic power device and a plunger sleeve assembly, the plunger sleeve assembly including a high pressure volume and a plunger sleeve including a plunger hole and a plunger slidable in the plunger hole.
- the clearance volume between the electromagnetic power device and the plunger sleeve assembly forms a low pressure oil chamber, and the plunger defines a high pressure oil chamber in the plunger hole.
- the plunger sleeve assembly Under the action of the electromagnetic driving device, the plunger sleeve assembly will have a low pressure oil chamber The fuel is sucked into the high pressure oil chamber and is pumped into the high pressure volume, wherein the electromagnetic power device comprises an energy storage device, a moving portion and a stationary portion, and the electromagnetic power device is controlled by the driving current to convert the electric energy into alternating two-way.
- the electromagnetic power device comprises an energy storage device, a moving portion and a stationary portion, and the electromagnetic power device is controlled by the driving current to convert the electric energy into alternating two-way.
- a driving force for driving the moving portion to reciprocate, in the first direction of the reciprocating motion the energy storage device absorbs energy from the moving portion, and in the second direction of the reciprocating motion, the plunger sleeve assembly is common to the moving portion and the energy storage device The fuel is pumped under the action.
- the energy storage device comprises at least one energy storage spring located between the moving part and the stationary part, and may also use a hydraulic oil chamber with a certain volume to store energy, including a piston for compressing the hydraulic oil chamber, one from the hydraulic supply source to the hydraulic pressure.
- the normally open check valve of the oil chamber when the pressure in the hydraulic chamber is higher than the specified value, the check valve is closed and the energy storage starts.
- the electromagnetic power unit includes a voice coil motor, and the moving portion includes a basket and a coil connected thereto, and the basket is used to transmit a force generated by the coil.
- the voice coil motor includes a u-shaped soft magnet and a magnetic stack, the magnetic stack is substantially a columnar body, the magnetic stack includes a first permanent magnet and a first soft magnetic body divided in the axial direction, and the u-shaped soft magnetic body includes a side wall and a bottom surface
- the first permanent magnet of the magnetic pile is connected to the bottom surface and forms a uniform annular space with the sidewall, the first permanent magnet is magnetized in the axial direction, the coil comprises a first coil, the inner wall of the first coil and the first soft magnet
- the side circumferences cooperate with each other and can slide axially in the annular space without resistance.
- the magnetic stack includes a second permanent magnet and a second soft magnetic body that are axially divided, wherein the second permanent magnet is adjacent to the first soft magnetic body and the second soft magnetic body, and the second permanent magnet is axially magnetized. Its polarity is opposite to that of the first permanent magnet.
- the above solution may include a supplemental soft magnet disposed between the basket and the u-type soft magnet in a manner supplementing the soft magnet to reduce the magnetic resistance between the second soft magnet and the u-soft magnet.
- the supplemental soft magnet may include a projection extending toward the second soft magnet, the basket including a recess at a corresponding position, the recess being geometrically compatible with the projection so as not to affect the axis of the moving portion Toward the movement, at the same time, such a convex-concave structure can prevent the rotational movement of the moving portion.
- the coil includes a second coil, and the basket, the second coil, and the first coil are fixed to each other,
- the winding direction of the second coil is opposite to that of the first coil, and the inner wall of the second coil cooperates with the side circumference of the second soft magnet to slide axially in the annular space without resistance, and the increase of the second coil can further enhance the electromagnetic Force and reduce the heat of the coil.
- the lead wire of the coil can be solved by including a terminal and a lead spring, one end of the lead spring is connected to the terminal through the stationary part, and the other end is connected to the coil wire, and the spring portion of the lead spring is located between the stationary part and the moving part .
- Another type of electromagnetic power unit includes a double solenoid drive unit, and the moving portion is an armature.
- the above various electromagnetic power devices are suitable to be combined with the following piston pump solutions to form a more specific technical solution, that is, including an oil inlet hole, the plunger hole is substantially a circular hole, a plunger and a plunger hole In close fitting and free to slide therein, the moving part drives the plunger to move in the plunger sleeve.
- the plunger includes an oil inlet hole and an inlet valve seat surface communicating therewith, the oil inlet hole extends through the two ends of the plunger, and the seat surface is located at one end of the high pressure oil chamber, and includes an oil inlet valve member and an oil inlet valve spring.
- the oil valve member, the inlet valve spring and the inlet valve seat face form an inlet valve.
- the oil inlet hole may be disposed through a wall surface of the plunger sleeve.
- the above various electromagnetic power devices are also suitable to be combined with the following piston pump solutions to form a more specific technical solution, that is, including an oil inlet hole, the plunger hole is substantially a circular hole, the plunger and the plunger The hole is closely fitted and free to slide therein, and the moving portion drives the plunger sleeve to move on the plunger.
- the plunger sleeve assembly includes an oil inlet valve member, an oil inlet valve spring and an oil inlet valve seat, the oil inlet valve seat is disposed at one end of the plunger hole, and the oil inlet hole is communicated with the high pressure oil chamber through the oil inlet valve seat .
- a valve ejector rod fixed to the stationary portion may be provided, and the valve ejector rod extends from the oil inlet hole to the high pressure chamber, and when the oil inlet stroke is nearing the end, the valve ejector rod contacts the inlet valve member and Limiting the movement of the inlet valve member to limit the complete closing of the inlet valve can further increase the transient energy output density of the electromagnetic power unit to further increase the oil pressure.
- the oil supply device can be formed by using at least one of the above-mentioned energy storage type high-pressure electronic fuel pumps.
- the device further comprises a low-pressure electronic oil pump and a solenoid valve type fuel injector, a fuel rail connected to the high-pressure volume, and the low-pressure electronic oil pump is located in the fuel tank.
- the oil supply for the energy storage type high-pressure electronic fuel pump, the computer control unit, the fuel is pressurized by the energy storage high-pressure electronic fuel pump and then delivered to the oil rail as needed, and the electromagnetic valve type fuel injector supplies the fuel in the oil rail quantitatively. Give the engine.
- the above solution may include a cam driven plunger type mechanical pump that supplies fuel from a low pressure electronic oil pump to input fuel to the fuel rail.
- a fuel supply mode corresponds to this.
- the energy storage high-pressure electronic fuel pump immediately supplies oil to the fuel rail until the rail pressure reaches a predetermined value.
- the plunger mechanical pump It will be driven by the engine, and after the engine is running, it will then input fuel to the fuel rail. In practical applications, this method can not only quickly establish the rail pressure before the engine starts, but also help to further increase the rail volume and reduce the rail pressure. Fluctuation.
- an injection device capable of directly supplying oil in the cylinder can be formed, which does not require a fuel rail, and has a simple structure, reliability, and low cost.
- FIG. 1 is a structural view of a first embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention
- FIG. 2 is a structural view of a second embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention
- FIG. 3 is a structural view of a third embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention.
- 3a is a structural diagram of a complementary soft magnetic body of a third embodiment of an energy storage type high-pressure electronic fuel pump according to the present invention.
- 3b is a structural diagram of a basket of a third embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- FIG. 4 is a structural view of a fourth embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention.
- Figure 5 is a structural view of a fifth embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention.
- FIG. 6 is a structural view of a sixth embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention.
- FIG. 7 is a structural view of a seventh embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention.
- FIG. 8 is a structural view of an eighth embodiment of an energy storage type high-pressure electronic fuel pump provided by the present invention.
- Figure 9 is a structural view of a first embodiment of an oil supply device provided by the present invention.
- Figure 9a is a structural view of a pump unit of a first embodiment of the oil supply device provided by the present invention.
- Figure 10 is a structural view of a second embodiment of the oil supply device provided by the present invention.
- FIG 11 is a configuration diagram of a third embodiment of the oil supply device provided by the present invention. detailed description
- Figure 1 is a block diagram showing the first embodiment of the energy storage type high pressure electronic fuel pump provided by the present invention.
- the energy storage high pressure electronic fuel pump includes an electromagnetic power unit 100, a plunger sleeve assembly 200.
- the electromagnetic power unit 100 includes a moving portion 101, a stationary portion 199 and an energy storage spring 102, and the stationary portion 199 and the moving portion 101 constitute a main body of a voice coil motor.
- the plunger sleeve assembly 200 includes a plunger sleeve 201, a plunger 211, a return spring 209, an inlet valve composed of an inlet valve member 204, an inlet valve spring 206 and an inlet valve seat surface 205.
- An oil discharge valve consisting of the oil discharge valve member 212, the oil discharge valve spring 215, the oil discharge valve spring seat 216 and the oil discharge valve seat surface 213, and an output sleeve 219 having a high pressure volume 217.
- the plunger sleeve 201 includes a plunger hole 208.
- the plunger hole 208 is connected to the oil inlet hole 203 through the inlet valve seat surface 205, and the other end is inserted into the plunger 211 and defines a high pressure oil chamber 208a.
- the plunger sleeve 201 includes a column. Plug spring seat 210.
- the plunger 211 includes a central oil passage 211a that connects the high pressure oil chamber 208a with the outlet valve seat surface 213.
- Oil outlet valve member 212 and oil outlet valve spring 215 is located in the oil discharge valve chamber 214, and the oil discharge valve chamber 214 is in communication with the high pressure volume 217 through the oil outlet passage 216a.
- the plunger 211 is connected to the output sleeve 219 in a sealed manner, and the outlet valve spring seat 216 is fixed to the output sleeve 219 by pressing or the like.
- the output sleeve 219 contains a high pressure joint 218 for connection to a high pressure oil line.
- the moving part 101 includes a first coil 103, a second coil 180, a basket 108 and a bobbin 104 integrally designed therewith, and the connector 106, the first coil 103 and the second coil 180 are wound in opposite directions and connected in series, and the basket is supported.
- 108 includes a basket hollow 117a for reducing motion resistance and passing fuel, and passages 119a and 119b for passing the coil wires.
- the basket 108 is rigidly coupled to the first coil 103 and the second coil 180 for transmitting the force generated by the coil to the energy storage spring 102 and the plunger sleeve 201.
- the stationary portion 199 includes a magnetic pile 109, a U-shaped soft magnetic body 115, and an upper cover 107.
- the magnetic pile 109 includes a first permanent magnet 111, a first soft magnetic body 113, a second permanent magnet 110, and a second soft magnetic body 114.
- the U-shaped soft magnetic body 115 includes a low-pressure fuel return passage 118, and the upper cover 107 includes a low-pressure fuel intake passage.
- 117; the magnetic pile 109 is a cylinder having a central hole, and the U-shaped soft magnet 115 includes an annular side wall 115a and a bottom surface 115b including a central hole.
- the magnetic pile 109 is fixed to the bottom surface 115b and forms a side with the side wall 115a.
- the valve top rod 207 is fixed to the upper cover 107 and extends from the oil inlet hole 203 to the high pressure oil chamber 208a.
- the first soft magnetic body 113, the second soft magnetic body 114 and the U-shaped soft magnetic body are each made of a soft magnetic material.
- the plunger 211 and the output sleeve 219 pass through the center holes of the magnetic pile 109 and the bottom surface 115b and are fixed to each other.
- the energy storage spring 102 acts between the basket 108 and the upper cover 107.
- the lead spring 105a and the lead spring 105b are both compression springs, and also act between the basket 108 and the upper cover 107.
- the lead spring 105a and the lead spring 105b also have a certain Energy storage function.
- the lead spring 105a and the lead spring 105b are electrically connected to the two terminals of the connector 106, and the other ends are connected to the two lead wires of the first coil 103 and the second coil 180, respectively.
- the seal 116a and the seal 116b are used for sealing between the wire and the wall surface of the upper cover 107.
- the first coil 103 is always held around the first soft magnetic body 113 in the axial range of motion
- the second coil 180 is always held around the second soft magnetic body 114 in the axial range of motion.
- the outer diameters of the first soft magnet 113 and the second soft magnetic body 114 may be designed to be slightly larger than the first permanent magnet 111 and the second permanent magnet 110 to ensure that the moving portion 101 is on the circumferential surface of the first soft magnetic body 113 and the second soft magnetic body 114. Smooth on the slide.
- the return spring 209 acts between the plunger sleeve spring seat 210 and the magnetic pile 109.
- a complete working process of the energy storage high-pressure electronic fuel pump is: fuel enters the low-pressure oil chamber 198 from the oil inlet 117, and when the current in the positive direction passes through the first coil 103 and the second coil 180, the first soft magnet Under the action of the surrounding radial magnetic field of 113 and the second soft magnetic body 114, the moving portion 101 upwardly compresses the energy storage spring 102, the upward direction refers to the oil suction stroke of the plunger sleeve assembly 200, and the return spring 209 also pushes the plunger at the same time.
- the inlet valve spring 206 pushes the inlet valve member 204 to ascend, and the fuel in the low pressure oil chamber 198 pushes the inlet valve member 204 to open and enters the high pressure oil chamber 208a due to the pressure difference, when the moving member 101 approaches upward.
- the valve top rod 207 restricts the oil inlet valve member 204 from seating, when When the moving member 101 is lifted up by the upper cover 107, an initial spacing G is formed between the inlet valve member 204 and the inlet valve seat 205, and the high pressure oil chamber 208a is already full or nearly full of fuel.
- the moving portion 101 pushes the plunger sleeve 201 down while energy storage
- the spring 102 also pushes the plunger sleeve 201 down.
- the plunger sleeve 201 slides along the plunger 211 without resistance, and part of the fuel in the high pressure oil chamber 208a and possibly gas first.
- the oil inlet hole 203 is squeezed into the low pressure fuel chamber 198.
- the work of the electromagnetic field and the release of the energy of the energy storage spring 102 are converted into the kinetic energy of the plunger sleeve 201 and the moving portion 101, and the valve top rod 207 is disengaged from the oil inlet valve member.
- the oil inlet valve member 207 is seated on the oil inlet valve seat 205, and at this time, the plunger sleeve 201 further descends to start compressing the fuel in the high pressure oil chamber 208a, when the oil pressure in the high pressure oil chamber 208a is higher than the oil outlet valve spring.
- the preload of 215 is summed with the oil pressure in the delivery valve chamber 214, the high pressure fuel enters the high pressure volume 217.
- the moving portion 101 stores the magnetic field as a functional amount in the energy storage spring 102, and the starting portion of the moving portion 101 further stores the magnetic field work in the form of kinetic energy in the moving portion 101 and the plunger sleeve 201.
- the sum of the stored energy described above will be released in the subsequent downward flow of the moving portion 101 to the fuel in the high pressure oil chamber 208a, so that the fuel pressure will be greatly increased relative to the non-energy storage system. Therefore, by adjusting the initial pitch G, the total amount of energy stored can be changed.
- an ordinary fuel circulation pump can be externally connected between the oil inlet passage 117 and the oil return passage 118 for taking the heat in the low pressure oil chamber 198 in time.
- FIG. 2 is a structural view showing a second embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the moving portion 101 of the embodiment only includes the first coil 113
- the stationary portion 199 includes only the first permanent magnet 111 and the first soft magnet 113.
- the first coil 113 is always held around the first soft magnetic body 113 within its range of motion, and the rest of the structure and operation are the same as in the first embodiment of the energy storage high-pressure electronic fuel pump.
- Fig. 3 is a structural view showing a third embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the stationary portion 119 of the present embodiment adds the second permanent magnet 103 and the second soft magnetic body 114, and a complementary soft magnetic body 122 is added.
- the increase increases the strength of the magnetic field around the first soft magnet 113, thereby improving the energy conversion efficiency.
- the structure of the supplemental soft magnet 122 is shown in Fig. 3a, which includes a uniform surrounding magnetizer 122a and two projections 122b and 122c. Accordingly, the structure of the basket 108 is shown in Fig. 3b, including two depressions 198a and 198b, two depressions. 198a and 198b are geometrically compatible with the two projections 122b and 122c, respectively, such that the supplemental soft magnet 122 does not affect the free movement of the basket 108, and the two projections 122b and 122c can limit the rotational movement of the basket 108, supplementing the soft magnet 122.
- the magnetic resistance between the U-shaped soft magnet 115 and the second soft magnetic body 114 can be reduced.
- the working process of this embodiment is the same as that of the second embodiment of the high-pressure electronic fuel pump.
- Fig. 4 is a structural view showing a fourth embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the plunger sleeve assembly 200 includes a plunger sleeve 201 closed at one end and an oil inlet hole 203 provided in the side wall of the fifth portion of the plunger 211 in communication with the center oil passage 211a.
- the difference in the working process of the present embodiment is as follows, that is, the plunger sleeve 201 is in the process of ascending with the moving portion 101, and the oil inlet hole 203 When it is opened, the fuel in the low pressure oil chamber 198 enters the high pressure oil chamber 208a due to the pressure difference, and then the plunger sleeve 201 continues to ascend until it is restricted.
- the plunger sleeve 201 is at the beginning stage of the descending movement portion 101, at the oil inlet hole 203.
- the plunger sleeve 201 and the moving portion 101 0 perform a non-resistive motion under the action of the energy storage spring 102 and the electromagnetic field force. At this stage, the work of the electromagnetic energy and the energy release of the energy storage spring 102 move. The kinetic energy form of the piece 101 and the plunger sleeve 201 stores energy.
- the fuel in the high pressure oil chamber 208a is started to be compressed. When the oil pressure in the high pressure oil chamber 208a is higher than the oil discharge valve When the preload force of the spring 215 is summed with the oil pressure in the oil discharge valve chamber 214, the high pressure fuel enters the high pressure volume 217.
- Fig. 5 is a structural view showing a fifth embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the plunger sleeve assembly 200 includes a plunger sleeve 201 that is sealingly coupled to the output sleeve 219, a plunger 211 including a plunger spring seat 211b that extends axially through the ends of the plunger 211 and is connected at one end.
- the low pressure fuel chamber 198 has the other end connected to the inlet valve seat surface 205.
- the plunger sleeve hole 208 is a stepped hole.
- the plunger 211 enters the high pressure oil chamber 208a from the open end, and the outlet valve seat 213 connects the plunger sleeve hole 208.
- a valve top rod 207 fixed to the upper cover 107 extends from the oil inlet hole 203 to the high pressure oil chamber 208a.
- the difference in the working process of the present embodiment is as follows: when the moving portion 101 upwardly compresses the energy storage spring 102, the return spring 209 also pushes the plunger 211 at the same time. Upward, the inlet valve spring 206 pushes the inlet valve member 204 to ascend, and the fuel in the low pressure oil chamber 198 pushes the inlet valve member 204 to open and enters the high pressure oil chamber 208a due to the pressure difference, when the moving member 101 approaches the upper portion.
- valve top rod 207 restricts the inlet valve member: 5 204 is seated, and when the moving member 101 is up-positioned by the upper cover 107, an initial spacing is formed between the inlet valve member 204 and the inlet valve seat 205. G, at this time the high pressure oil chamber 208a is already full or nearly full of fuel.
- the energy storage spring 102 also pushes the plunger 211 downward.
- the plunger 211 slides along the plunger sleeve hole 208 without resistance.
- Part of the fuel in the high pressure oil chamber 208a and possibly the gas are first squeezed from the oil inlet hole 203 into the low pressure fuel chamber 198, during which the work of the electromagnetic field and the release of the energy of the energy storage spring 102 are converted into 10 plungers 211 and the moving portion.
- Fig. 6 is a structural view showing a sixth embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the structure is different in structure, that is, the output sleeve 219 is fixed to the upper cover 107, and the valve top rod 207 is fixed to the bottom surface 115b.
- the bottom surface 115b is a closed plate having an inner oil passage 198a.
- the energy storage spring 102 passes through the central hole of the magnetic pile 109 to act between the basket 108 and the bottom surface 115b.
- the return spring 209 acts on the plunger sleeve spring seat 210 and the output.
- the basket 108 includes a central hollow 108b through which the valve stem 207 extends from the oil inlet 203 to the high pressure oil chamber 208a.
- the central hole of the magnetic pile 109 may also be a stepped hole which is small inside and outside, or may be a blind hole, and the valve top rod 207 may also be fixed to the magnetic pile 109.
- the working process in this embodiment is substantially the same as or similar to the first embodiment of the energy storage type high-pressure electronic fuel pump, and will not be described herein.
- Fig. 7 is a structural view showing a seventh embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the present embodiment is structurally different in that the U-shaped outer magnet 115 includes an extension portion 190 through which a hydraulic sleeve 192 runs.
- a hydraulic clutch 188 is closely fitted and freely movable in the hydraulic sleeve 192, and an energy storage spring seat 189 is fixed in the extension 190.
- the energy storage spring acts between the hydraulic plunger 188 and the energy storage spring seat 189.
- the extension 190 is provided with a normally open hydraulic pressure including a hydraulic valve member 195, a hydraulic valve seat 196 and a hydraulic check valve spring 194.
- the one-way valve is provided with a passage 193 leading to the low-pressure oil source at the outlet of the hydraulic check valve, and a hydraulic volume chamber 191 is disposed between the hydraulic plunger 188 and the hydraulic check valve, and the hydraulic volume chamber 191 can be extended.
- the plunger sleeve 201 includes an oil inlet 203 through the side wall, one end receiving the plunger 211 and the other end closed.
- the difference in the working process of the present embodiment is as follows: when the moving portion 101 is ascending, the hydraulic plunger 188 is pushed and the energy storage spring is compressed by the hydraulic plunger 188. 102, when the pressure of the hydraulic volume chamber 191 rises abruptly due to the movement of the hydraulic plunger, the hydraulic check valve member 195 will close the hydraulic check valve seat 196 against the force of the hydraulic check valve spring 194, at this time, As the hydraulic plunger 188 can continue to ascend, the fuel of the hydraulic volume chamber 191 is continuously pressurized, and the energy storage spring energy and the hydraulic energy are continuously lowered and stored, and the plunger sleeve 201 is in the process of moving along with the moving portion 101.
- the oil inlet hole 203 is opened, and the fuel in the low pressure oil chamber 198 enters the high pressure oil chamber 208a due to the pressure difference, and then the plunger sleeve 201 continues to ascend until it is restricted, and the plunger sleeve 201 is at the beginning stage of the descending movement portion 101.
- the plunger sleeve 201 and the moving portion 101 perform the non-resistance movement under the pressure of the hydraulic pressure chamber 191, the energy storage spring 102 and the electromagnetic field force, and store the energy in the form of kinetic energy.
- the fuel in the high pressure oil chamber 208a is started to be compressed, and the oil pressure in the high pressure oil chamber 208a is higher than
- the preload force of the oil discharge valve spring 215 is the sum of the oil pressure in the oil discharge valve chamber 214
- the high pressure fuel enters the high pressure volume 217, and when the pressure is close to the lower end point, the pressure of the hydraulic pressure chamber 191 decreases, and the hydraulic one-way member 195 is opened. If the fuel in the hydraulic volume chamber 191 is missing, it can be replenished by fuel from a low pressure oil source.
- Fig. 8 is a block diagram showing the eighth embodiment of the energy storage type high-pressure electronic fuel pump provided by the present invention.
- the energy storage high pressure electronic fuel pump includes an electromagnetic power unit 100, a plunger sleeve assembly 200.
- the electromagnetic power unit 100 includes a moving portion 101, a stationary portion 199, and an energy storage spring 102.
- the plunger sleeve assembly 200 includes a plunger sleeve 201, a plunger 211, a return spring 209, and an oil discharge valve composed of an oil discharge valve member 212, an oil discharge valve spring 215, and an oil discharge valve seat surface 213.
- An output sleeve 219 having a high pressure volume 217, the plunger sleeve 201 includes a plunger bore 208 that enters from one end of the plunger bore 208 and forms a high pressure oil chamber 208a that passes through the side of the plunger sleeve 201
- the wall is connected to the low pressure oil chamber 198 and the plunger hole 208.
- the plunger 211 includes a plunger spring seat 211b.
- the return spring 209 acts between the plunger spring seat 211b and the plunger sleeve 201, and the oil outlet valve spring 215 acts on the oil outlet.
- the plunger sleeve 201 and the output sleeve 219 are connected in a sealed manner, and the output sleeve 219 includes a high pressure joint 218 for connection with the high pressure oil passage.
- the moving portion 101 includes an armature 132 and an armature 108.
- the armature 132 includes an armature oil passage 223.
- the basket 108 includes a basket hollow 108a. The basket 108 is coupled to the armature 132 for transmitting the function between the armature 132 and the plunger 211. force.
- the stationary portion 199 includes a double solenoid driving member composed of a first solenoid 124, a second solenoid 123, a yoke 125, a first magnetic gap 127, and a second magnetic gap 126, one of which includes an oil inlet 177. And an upper cover 107 for sealing the 0-ring, a connector 106.
- the energy storage spring 102 acts between the upper cover 107 and the armature 132.
- the front and rear end faces of the armature 132 are located adjacent to the first magnetic gap 127 and the second magnetic gap 126, respectively.
- a complete working process of the energy storage high-pressure electronic fuel pump is: fuel with a certain pressure enters the low-pressure oil chamber 198 from the oil inlet 117, and after the second solenoid 123 is powered, the armature 132 is replaced by the second magnetic
- the gap 126 drives the moving part 101 to move up under the action of the electromagnetic field force.
- the upward direction refers to the oil suction stroke of the plunger sleeve assembly 200, the moving part 101 upwardly compresses the energy storage spring 102, and the return spring 209 pushes the plunger 211 upward.
- the oil inlet hole 203 is opened, and the fuel in the low pressure oil chamber 198 enters the high pressure oil chamber 208a due to the pressure difference, at a certain moment before the moving portion 101 and the plunger 211 continue to be lifted, the second solenoid
- the armature 132 drives the moving portion 101 downward by the electromagnetic field force of the first magnetic gap 127, and the plunger 211 descends along with the moving portion 101, at the initial starting stage,
- the plunger 211 and the moving portion 101 perform a non-resistive motion under the action of the energy storage spring 102 and the electromagnetic field force, and part of the fuel in the high pressure oil chamber 208a and the gas that may exist first enter.
- Oil hole 203 is squeezed to low
- the fuel chamber 198, the work of electromagnetic energy at this stage and the energy release of the energy storage spring 102 are stored in the form of kinetic energy of the moving member 101 and the plunger 211.
- the plunger 211 After the plunger 211 is further closed down into the oil hole 203, the plunger 211 starts to compress.
- the fuel in the oil chamber 208a When the oil pressure in the high pressure oil chamber 208a is higher than the sum of the preload force of the oil discharge valve spring 215 and the oil pressure in the oil discharge valve chamber 214, the oil discharge valve member 212 leaves the outlet valve member seat surface 213, and the high pressure fuel enters. High pressure volume 217.
- Figure 9 is a configuration diagram of a first embodiment of an oil supply device provided by the present invention.
- An oil supply device that is, a high pressure fuel pump set 2 comprising a high energy electronic fuel pump provided by two embodiments shown in Fig. 1, a low pressure electronic oil pump 405, a pressure regulator 406, a fuel rail 402, Solenoid valve injector 403, rail pressure sensor 404, computer control unit 401, low pressure fuel supply pipe 407, low pressure return pipe 408, regulator low pressure return pipe 408a, high pressure oil supply pipe 409, fuel tank 410.
- the high pressure fuel pump unit 2 comprises two energy storage type high pressure electronic fuel pumps 1, a coupler 300, and the coupler 300 includes a
- the relief valve member 303, the relief valve spring 304 and the relief valve seat surface 305 constitute a relief valve, an overflow passage 306 connecting the relief valve seat surface 305 with the high pressure oil chamber 217, a high pressure joint 218, one back
- the oil passage 118, the oil return passages 118a and 118b of the two energy storage type high-pressure electronic fuel pumps 1 are connected to the oil return passage 118 through the low pressure seals 301a and 301b, and the output sleeves 219a of the two energy storage type high-pressure electronic fuel pumps 1 and 219b is coupled to the high pressure oil chamber 217 by high pressure seals 302a and 302b.
- the operation of the oil supply device is that the low-pressure electronic oil pump 405 supplies the fuel in the fuel tank 410 to the high-pressure fuel pump unit 2 through the low-pressure fuel supply pipe 407, and a part of the fuel is regulated by the low-pressure return pipe 408 via the pressure regulator 406.
- the pressure return pipe 408a returns to the oil tank 410.
- the computer control unit 401 determines a target fuel supply amount based on the information provided by the oil pressure sensor 404 and the information of the fuel demand of the engine. According to the target oil supply, the driving voltage or current of the high-pressure fuel pump group and its pulse width and frequency are determined.
- the two energy storage high-pressure electronic fuel pumps of the high-pressure fuel pump group can be shifted in phase operation or in phase.
- the computer unit 401 opens the solenoid valve injector 403 as needed to directly inject fuel into the cylinder of the internal combustion engine.
- the fuel may be gasoline, or may be kerosene, diesel, or other biofuel.
- the return of the low pressure fuel to the fuel tank 410 via the high pressure fuel pump set 2 facilitates cooling of the fuel unit.
- the function of the pressure regulator 406 is to maintain the pressure of the low pressure supply line 407 to prevent air bubbles from affecting the normal operation of the fuel unit.
- the relief valve member 303 When the pressure in the oil rail 402 is higher than a predetermined value due to factors such as temperature, the relief valve member 303 will push the relief valve spring 304 to open the overflow passage 306 until the pressure of the oil rail 402 is lower than a predetermined value.
- This overflow is primarily used to control the pressure of the fuel rail 402 to prevent the solenoid valve injector 403 from opening due to excessive pressure.
- Figure 10 is a configuration diagram of a second embodiment of the oil supply device provided by the present invention.
- the present embodiment is structurally different in that it includes an energy storage type high-pressure electronic fuel pump 1, a cam-driven high-pressure pump 413, and a high-pressure pump 413.
- a commercially available high pressure pump for direct injection engines a high pressure pump 413, a mechanical pump high pressure oil pipe 412 leading to the oil rail 402, a mechanical pump low pressure oil pipe 407a leading to the high pressure pump 413, and a storage energy source.
- the working process of the oil supply device has the following difference: ⁇ , the low-pressure electronic oil pump 405 passes the fuel in the fuel tank 410 through the low-pressure fuel supply pipe 407-route machine
- the pump low pressure oil pipe 407a is supplied to the high pressure pump 413, and the other route electronic pump low pressure oil pipe 407b is supplied to the energy storage type high pressure electronic fuel pump 1.
- the computer control unit 401 first determines according to the information provided by the oil pressure sensor 404.
- the computer control unit 401 drives the energy storage type high-pressure electronic fuel pump 1 through the high-pressure oil pipe 409 and The pressure chamber 411 supplies oil to the oil rail 402.
- the energy storage type high pressure electronic fuel pump 1 stops supplying oil to the oil rail 402.
- the function of the pressure accumulating chamber 411 is equivalent to increasing the volume of the oil rail 402, which can be solved by directly increasing the volume of the oil rail 402.
- the oil supply device can effectively solve the contradiction between the pressure fluctuation and the pressure rising speed in the oil rail 402 when the simple mechanical high pressure pump 413 is used, which is beneficial to the starting of the engine and is beneficial to reducing the pressure fluctuation in the oil rail 402. Thereby improving oil supply accuracy and simplifying control logic.
- Figure 11 is a configuration diagram of a third embodiment of the oil supply device provided by the present invention.
- An oil supply device i.e., an energy storage type high-pressure electronic fuel pump 1 provided by a first embodiment, and an external opening nozzle 500 connected to a high-pressure volume 217.
- the outer opening nozzle 500 includes a poppet valve member 501, a poppet valve seat 502, a poppet valve spring 503, a poppet valve spring seat 504, a limit member 505, and a poppet valve seat 502 including a poppet valve seat surface 506.
- the working process of the oil supply device is that, in the non-operating state, the poppet valve member 501 is seated on the lift valve seat 506 by the lift valve spring 503, thereby closing the outer opening nozzle 500, and the fuel pressure in the high pressure volume 217 can be
- the closing valve force of the poppet valve spring 503 is overcome, the poppet valve member 501 leaves the poppet valve seat 506, and the outer opening nozzle 500 is opened.
- the fuel in the high pressure volume 217 can be injected into the engine cylinder, and the lifting valve member 501 is lifted during the lifting process.
- the valve spring seat 504 meets the limit member 505 and the lift valve member 501 reaches its maximum lift.
- the first to eighth embodiments of the energy storage type high-pressure electronic fuel pump provided by the present invention can be applied to the first to third embodiments of the oil supply device provided by the present invention.
- Other further aspects based on the spirit of the invention are within the scope of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/767,607 US10495077B2 (en) | 2012-05-04 | 2013-05-04 | Energy-storing-type high-pressure electric fuel pump, fuel-supplying apparatus, and application method therefor |
US16/671,327 US20200063728A1 (en) | 2012-05-04 | 2019-11-01 | Energy-storing-type high pressure electric fuel pump, fuel-supplying apparatus, and applications thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101386664 | 2012-05-04 | ||
CN201210138666.4A CN102953883B (zh) | 2012-05-04 | 2012-05-04 | 一种储能式高压电子燃油泵、供油装置及其应用方法 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/767,607 A-371-Of-International US10495077B2 (en) | 2012-05-04 | 2013-05-04 | Energy-storing-type high-pressure electric fuel pump, fuel-supplying apparatus, and application method therefor |
US16/671,327 Division US20200063728A1 (en) | 2012-05-04 | 2019-11-01 | Energy-storing-type high pressure electric fuel pump, fuel-supplying apparatus, and applications thereof |
Publications (1)
Publication Number | Publication Date |
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WO2013163961A1 true WO2013163961A1 (zh) | 2013-11-07 |
Family
ID=47763151
Family Applications (1)
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PCT/CN2013/075166 WO2013163961A1 (zh) | 2012-05-04 | 2013-05-04 | 一种储能式高压电子燃油泵、供油装置及其应用方法 |
Country Status (3)
Country | Link |
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US (2) | US10495077B2 (zh) |
CN (1) | CN102953883B (zh) |
WO (1) | WO2013163961A1 (zh) |
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CN102953883B (zh) | 2012-05-04 | 2015-02-04 | 浙江福爱电子有限公司 | 一种储能式高压电子燃油泵、供油装置及其应用方法 |
EP2912300B1 (en) | 2012-10-25 | 2018-05-30 | Picospray, Inc. | Fuel injection system |
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CN105484833B (zh) * | 2014-09-19 | 2019-05-17 | 浙江福爱电子有限公司 | 一种液体喷射计量单元 |
CN105987727A (zh) * | 2015-01-20 | 2016-10-05 | 浙江福爱电子有限公司 | 一种液体流量测量装置 |
US10197025B2 (en) | 2016-05-12 | 2019-02-05 | Briggs & Stratton Corporation | Fuel delivery injector |
US10947940B2 (en) * | 2017-03-28 | 2021-03-16 | Briggs & Stratton, Llc | Fuel delivery system |
EP3428441A1 (de) * | 2017-07-11 | 2019-01-16 | Siemens Aktiengesellschaft | Antrieb einer pumpe |
CN107246342B (zh) * | 2017-07-24 | 2022-04-08 | 南京航空航天大学 | 动圈式高频增压泵 |
US20190112959A1 (en) * | 2017-10-12 | 2019-04-18 | Zhejiang Fai Electronics Co., Ltd. | Pulse-coupled pump |
DE102018201279B4 (de) * | 2018-01-29 | 2019-11-28 | Continental Automotive Gmbh | Hochdruckanschluss für eine Kraftstoffhochdruckpumpe eines Kraftstoffeinspritzsystems sowie Kraftstoffhochdruckpumpe |
CN108386302A (zh) * | 2018-05-07 | 2018-08-10 | 长沙燕通生物科技有限公司 | 柴油机储能与分流启动装置 |
CN110939499A (zh) * | 2018-09-25 | 2020-03-31 | 福爱电子(贵州)有限公司 | 一种碳氢喷嘴及其应用 |
WO2020077181A1 (en) | 2018-10-12 | 2020-04-16 | Briggs & Stratton Corporation | Electronic fuel injection module |
JP7115328B2 (ja) | 2019-01-15 | 2022-08-09 | 株式会社デンソー | 電磁弁 |
DE102019125271A1 (de) * | 2019-09-19 | 2021-03-25 | Volkswagen Aktiengesellschaft | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems, Antriebssystem und Kraftfahrzeug |
CN113464397A (zh) * | 2020-03-30 | 2021-10-01 | 福爱电子(贵州)有限公司 | 一种双脉冲泵液体喷射装置 |
CN114251211A (zh) * | 2020-09-23 | 2022-03-29 | 浙江福爱电子有限公司 | 一种往复式电子燃油喷射单元 |
CN112160856A (zh) * | 2020-09-30 | 2021-01-01 | 浙江翱腾智能科技股份有限公司 | 一种高压燃油泵及其供油方式 |
CN114760776B (zh) * | 2022-05-12 | 2023-07-25 | 大连佳峰自动化股份有限公司 | 一种高精度贴片机焊头机构 |
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Also Published As
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US20200063728A1 (en) | 2020-02-27 |
US20160186732A1 (en) | 2016-06-30 |
CN102953883A (zh) | 2013-03-06 |
CN102953883B (zh) | 2015-02-04 |
US10495077B2 (en) | 2019-12-03 |
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