An engine solenoid valve with cooling function

Abstract

The invention relates to an engine solenoid valve with a cooling function in the field of solenoid valves, comprising a solenoid valve tube, an upper valve body connected to the solenoid valve tube, an electromagnetic unit connected to the upper valve body, a liquid discharge mechanism connected to the bottom end of the solenoid valve tube, an auxiliary input tube connected to the input end of the solenoid valve tube, an auxiliary valve body matching the electromagnetic unit connected to the auxiliary input tube, and a liquid storage tank connected to the lower end of the auxiliary input tube; the upper valve body comprises a valve shell slidably connected to a first valve stem, a first valve core matching the first valve stem is installed in the solenoid valve tube, and electromagnetic coils are installed at both left and right ends of the electromagnetic unit; a second valve stem is slidably connected in the auxiliary valve body, and a second valve core matching a plug disc is installed in the auxiliary input tube, so as to adjust the fluid output of the solenoid valve according to the cooling needs of the piston in the engine, facilitate control of the injection time and injection amount during cooling, and ensure a proper injection amount for the engine piston.

Description

Technical Field

[0001] The present invention relates to an engine solenoid valve with a cooling function, in particular to an engine solenoid valve with a cooling function applied in the field of solenoid valves. Background Art

[0002] The engine solenoid valve is an electromagnetic switch used to control the oil circuit. It optimizes the engine performance by precisely controlling the opening and closing of the valve. It also plays an important role in improving fuel economy and reducing emissions.

[0003] In order to solve the problem of solenoid valve cooling, a solenoid valve in the market adopts a design that has a certain market share.

[0004] The specification of Chinese invention patent CN111059341B discloses an engine piston cooling solenoid valve structure applied to the technical field of automobile engine parts. One end of the valve sleeve of the engine piston cooling solenoid valve structure is connected to the housing, a valve core is movably installed in the valve sleeve, an oil inlet is arranged on the end face of the other end of the valve sleeve, an oil outlet is arranged on the side of the valve sleeve near the oil inlet, a magnetic core shaft is installed on the magnetic core body, the magnetic core shaft passes through the through hole on the valve sleeve and is connected to one end of the valve core, a front yoke sleeve which is an integral structure with the valve sleeve is arranged on the valve sleeve, and the front yoke sleeve extends from the other side of the coil into the coil. The engine piston cooling solenoid valve structure of the invention can adjust the flow rate by sending different signals through the ECU according to the engine working conditions, so that the injection time and injection amount during cooling are accurately matched with the engine working conditions.

[0005] When the existing solenoid valve sprays oil to cool the piston in the engine, it is inconvenient to output the cooling oil quantitatively according to the piston temperature, and the oil cooling requires the assistance of other equipment, which is relatively troublesome. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the existing solenoid valve sprays oil to cool the piston in the engine, it is inconvenient to output the cooling oil quantitatively according to the piston temperature, and the oil cooling requires the assistance of other equipment, which is relatively troublesome.

[0007] In order to solve the above problems, the present invention provides an engine solenoid valve with a cooling function, comprising a solenoid valve tube, an upper valve body connected to the solenoid valve tube, an electromagnetic unit connected to the upper valve body, a liquid discharge mechanism connected to the bottom end of the solenoid valve tube, an auxiliary input tube connected to the input end of the solenoid valve tube, an auxiliary valve body matching the electromagnetic unit connected to the auxiliary input tube, and a liquid storage tank connected to the lower end of the auxiliary input tube;

[0008] The upper valve body includes a valve shell slidably connected to a first valve stem, a first valve core matching the first valve stem is installed in the solenoid valve tube, and solenoid coils are installed at both ends of the solenoid unit; a second valve stem is slidably connected to the auxiliary valve body, permanent magnets matching the solenoid coils are installed on the first valve stem and the second valve stem, a plug disc is connected to the bottom end of the second valve stem, a second valve core matching the plug disc is installed in the auxiliary input pipe, a plug rod is connected to the bottom end of the plug disc, a groove matching the plug disc is provided at the upper end of the second valve core, and a pair of guide holes are provided on the side wall of the groove, and an L-shaped channel is provided between the plug disc and the plug rod;

[0009] The liquid storage box includes a lower protective shell connected to the auxiliary input pipe, a liquid storage tank is installed in the lower protective shell, a jack matching the plug rod is opened at the input end of the liquid storage tank, and a guide pipe connected to the output end of the auxiliary input pipe is connected to the liquid storage tank.

[0010] In the above-mentioned engine solenoid valve with cooling function, it is easy to regulate the temperature of the fluid, so that the temperature of the fluid input into the solenoid valve is controlled within a suitable temperature range, and it is easy to output the fluid quantitatively.

[0011] As a further improvement of the present application, the discharge mechanism includes a sealing shell with a guide channel, a discharge pipe is installed at the bottom end of the sealing shell, the upper end of the sealing shell is slidably connected to the first valve core, a compression spring is connected between the first valve core and the sealing shell, and an electromagnet fixedly connected to the sealing shell is arranged on the inner side of the compression spring.

[0012] As a further improvement of the present application, an upper guide groove matching the first valve core is opened at the upper part of the sealing shell, and a lower guide cavity communicating with the drain pipe is opened at the lower part of the sealing shell, and the upper guide groove and the lower guide cavity are communicated through a guide hole.

[0013] As a further improvement of the present application, the first valve core is of a hollow structure, and through holes are provided at both upper and lower ends of the first valve core, and a liquid inlet hole matching the first valve stem is provided at the top end of the first valve core.

[0014] As another improvement of the present application, a heat exchange chamber matching the liquid storage tank is opened in the lower protective shell, a pair of fluid circulation pipes matching the heat exchange chamber are connected to the lower protective shell, and a circulating liquid pump is connected between the pair of fluid circulation pipes.

[0015] As another improved supplement of the present application, the input end of the solenoid valve tube and the output end of the auxiliary input tube are both installed with docking tubes, one ends of the two docking tubes are welded to each other, and the other ends of the two docking tubes are respectively close to the first valve core and the second valve core, and the volume of the two docking tubes matches the volume of the liquid storage tank.

[0016] As another improvement of the present application, it also includes a coordinated control system, which includes a processor, a control module and a monitoring module are connected to the processor, the monitoring module is connected to a temperature sensor installed in the engine, and the electromagnetic unit and the drainage mechanism are both connected to the control module.

[0017] As another improvement supplement of the present application, when the temperature sensor detects that the temperature inside the engine exceeds the set value, the plug disc closes the upper end of the second valve core, and the fluid passes through the L-shaped channel and the fluid storage tank and enters the solenoid valve tube.

[0018] As another improvement supplement of the present application, after the plug disc closes the upper end of the second valve core, the drain mechanism is controlled to work for a set time to discharge the fluid retained between the solenoid valve tube and the auxiliary input tube, ensuring that the cooling fluid output from the reservoir is not easily affected by other temperature fluids.

[0019] In summary, this solution realizes regulating the fluid output of the solenoid valve according to the need to cool the piston in the engine, thereby facilitating the control of the injection time and injection amount during cooling and ensuring an appropriate amount of injection to the engine piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0021] Figure 2 It is a cross-sectional view of the first and second embodiments of the present application;

[0022] Figure 3 for Figure 2 The structural diagram at A in the middle;

[0023] Figure 4 for Figure 2 The structural diagram at B in the middle;

[0024] Figure 5 This is a partial cross-sectional view of the auxiliary valve of the first embodiment of the present application;

[0025] Figure 6 This is a system block diagram of the second implementation mode of the present application;

[0026] Figure 7 This is a partial working schematic diagram of the discharge mechanism when the cooling fluid is quantitatively output in the first embodiment of the present application;

[0027] Figure 8 This is a schematic diagram of the partial working of the auxiliary valve body of the second embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1 solenoid valve tube, 11 first valve core, 2 upper valve body, 21 first valve stem, 3 solenoid unit, 4 auxiliary input pipe, 41 second valve core, 5 auxiliary valve body, 51 second valve stem, 52 plug disc, 53 plug rod, 6 liquid storage tank, 61 lower protective shell, 62 liquid storage tank, 63 guide pipe, 7 drainage mechanism, 71 sealing shell, 72 drainage pipe, 73 compression spring. DETAILED DESCRIPTION

[0030] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figure 1-6 As shown, an engine solenoid valve with a cooling function comprises a solenoid valve tube 1, an upper valve body 2 is connected to the solenoid valve tube 1, an electromagnetic unit 3 is connected to the upper valve body 2, a liquid discharge mechanism 7 is connected to the bottom end of the solenoid valve tube 1, an auxiliary input tube 4 is connected to the input end of the solenoid valve tube 1, an auxiliary valve body 5 matching the electromagnetic unit 3 is connected to the auxiliary input tube 4, and a liquid storage tank 6 is connected to the lower end of the auxiliary input tube 4;

[0033] The upper valve body 2 includes a valve shell slidably connected with a first valve stem 21, a first valve core 11 matching the first valve stem 21 is installed in the solenoid valve tube 1, and solenoid coils are installed at both ends of the solenoid unit 3; a second valve stem 51 is slidably connected in the auxiliary valve body 5, and permanent magnets matching the solenoid coils are installed on the first valve stem 21 and the second valve stem 51, a plug disc 52 is connected to the bottom end of the second valve stem 51, a second valve core 41 matching the plug disc 52 is installed in the auxiliary input pipe 4, and a plug rod 53 is connected to the bottom end of the plug disc 52, a groove matching the plug disc 52 is opened at the upper end of the second valve core 41, and a pair of guide holes are opened on the side wall of the groove, an L-shaped channel is opened between the plug disc 52 and the plug rod 53, the input end of the L-shaped channel is located on the plug disc 52, and the input end of the L-shaped channel faces the input end of the auxiliary input pipe 4, and after the plug disc 52 is inserted into the groove on the second valve core 41, the input end of the L-shaped channel matches a guide hole;

[0034] The liquid storage box 6 includes a lower protective shell 61 connected to the auxiliary input pipe 4, and a liquid storage tank 62 is installed in the lower protective shell 61. The input end of the liquid storage tank 62 is provided with a jack matching the plug rod 53, and the liquid storage tank 62 is connected to a guide pipe 63 that communicates with the output end of the auxiliary input pipe 4.

[0035] The input end of the solenoid valve tube 1 and the output end of the auxiliary input tube 4 are both equipped with a butt-joint tube, which is covered with a heat-insulating layer. One end of the two butt-joint tubes is welded to each other, and the other ends of the two butt-joint tubes are respectively close to the first valve core 11 and the second valve core 41. The volume of the two butt-joint tubes matches the volume of the liquid storage tank 62.

[0036] The first valve core 11 is of a hollow structure, and through holes are provided at both upper and lower ends of the first valve core 11 . A liquid inlet hole matching the first valve stem 21 is provided at the top end of the first valve core 11 .

[0037] A heat exchange cavity matching the liquid storage tank 62 is provided in the lower protective shell 61, a pair of fluid circulation pipes matching the heat exchange cavity are connected to the lower protective shell 61, a circulating liquid pump is connected between the pair of fluid circulation pipes, a cooling fan can be installed on the circulating liquid pump, and coolant is input to the fluid circulation pipes of one or more liquid storage tanks 6 through the circulating liquid pump, so that the fluid in the liquid storage tank 62 is cooled; optionally, a temperature monitoring sensor connected to the monitoring module signal is provided in the liquid storage tank 62, and only after the temperature of the fluid in the liquid storage tank 62 drops to a set value, the pressure pump connected to the auxiliary input pipe 4 is controlled to work to output the fluid in the liquid storage tank 62;

[0038] When the solenoid valve tube 1 outputs fluid normally, the fluid is directly input into the solenoid valve tube 1 through the auxiliary input tube 4 and then output; at this time, the upper valve body 2 and the auxiliary valve body 5 are synchronously controlled, so that the first valve stem 21 is driven at the same time and the second valve stem 51 is driven to rise at the same time, so that the first valve core 11 and the second valve core 41 are opened, and the fluid input into the auxiliary input tube 4 directly passes through the second valve core 41 into the first valve core 11 and is output;

[0039] In this solution, the fluid used for cooling the piston is stored and cooled by the liquid storage tank 6. When the solenoid valve tube 1 needs to output the cooling fluid, the solenoid unit 3 is controlled to work, so that the second valve stem 51 in the second valve core 41 is lowered, so that the upper part of the second valve core 41 is closed. When the fluid is input to the solenoid valve tube 1 through the auxiliary input pipe 4, the fluid enters the second valve core 41 from the input end of the auxiliary input pipe 4, and then enters the liquid storage tank 62 through the L-shaped channel. After the fluid is cooled in the liquid storage tank 62, it is transmitted to the output end of the auxiliary input pipe 4 through the guide pipe 63, and then the fluid is output to the engine piston through the solenoid valve tube 1;

[0040] In this embodiment, when the cooling fluid is output, the infusion time and pressure can be controlled, and the amount of each injection can be matched with the volume of the liquid storage tank 62, so as to ensure that the injection is fully cooled before quantitative output;

[0041] The liquid storage tank 6 of this solution is directly connected to the solenoid valve tube 1 to ensure that the fluid is quickly output after cooling. The fluid can be adjusted to output after cooling or normally as needed.

[0042] Second implementation method:

[0043] Figure 3 and Figure 6-8As shown, the discharge mechanism 7 includes a sealing shell 71 with a guide channel, a discharge pipe 72 is installed at the bottom end of the sealing shell 71, the upper end of the sealing shell 71 is slidably connected to the first valve core 11, a compression spring 73 is connected between the first valve core 11 and the sealing shell 71, and an electromagnet fixedly connected to the sealing shell 71 is arranged on the inner side of the compression spring 73. An upper guide groove matching the first valve core 11 is provided at the upper part of the sealing shell 71, and a lower guide cavity communicating with the discharge pipe 72 is provided at the lower part of the sealing shell 71, and the upper guide groove and the lower guide cavity are communicated through the guide hole.

[0044] It also includes a coordinated control system, which includes a processor, a control module and a monitoring module are connected to the processor, and a temperature sensor installed in the engine is connected to the monitoring module. The electromagnetic unit 3 and the drainage mechanism 7 are both connected to the control module.

[0045] When the temperature sensor detects that the temperature inside the engine exceeds the set value, the plug disc 52 closes the upper end of the second valve core 41, and the fluid passes through the L-shaped channel and the liquid storage tank 6 and enters the solenoid valve tube 1;

[0046] After the plug disc 52 seals the upper end of the second valve core 41, the drain mechanism 7 is controlled to work for a set time to drain the fluid retained between the solenoid valve tube 1 and the auxiliary input tube 4, ensuring that the cooling fluid output by the reservoir 6 is not easily affected by other temperature fluids;

[0047] When switching the fluid output mode, the fluid retained between the solenoid valve tube 1 and the auxiliary input tube 4 is discharged through the discharge mechanism 7 to ensure that the solenoid valve tube 1 does not output the cold fluid after heat exchange with the retained fluid, so that after the device is switched to output the cooling fluid, it is not easy to output the fluid whose temperature does not meet the requirements;

[0048] The processor of this embodiment is provided with a data processing function, and the processor can set the number of quantitative fuel injections according to the difference between the detection value of the temperature sensor and the set temperature value. In this embodiment, the amount of fuel injection each time matches the volume of the liquid storage tank 62;

[0049] After each oil injection, the newly filled fluid in the liquid storage tank 62 is cooled, and the next oil injection is performed after cooling, so as to achieve quantitative and temperature-controlled oil injection on the piston, so as to cool the piston with a fluid of appropriate measurement and temperature.

[0050] This solution regulates the output of the cooling fluid according to the piston temperature, and the fluid output of this solution can be set to a fixed temperature and a quantitative output. Combined with the piston temperature, the injection time can be conveniently set, and it is easy to ensure that the oil is fully injected when the piston needs to be cooled.

[0051] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An engine solenoid valve with a cooling function, comprising a solenoid valve tube (1), Features: The solenoid valve tube (1) is connected to an upper valve body (2), the upper valve body (2) is connected to an electromagnetic unit (3), the bottom end of the solenoid valve tube (1) is connected to a liquid discharge mechanism (7), the input end of the solenoid valve tube (1) is connected to an auxiliary input tube (4), the auxiliary input tube (4) is connected to an auxiliary valve body (5) matching the electromagnetic unit (3), and the lower end of the auxiliary input tube (4) is connected to a liquid storage tank (6); The upper valve body (2) comprises a valve shell slidably connected to a first valve stem (21); a first valve core (11) matching the first valve stem (21) is installed in the solenoid valve tube (1); and solenoid coils are installed at both left and right ends of the solenoid unit (3); a second valve stem (51) is slidably connected in the auxiliary valve body (5); permanent magnets matching the solenoid coils are installed on both the first valve stem (21) and the second valve stem (51); a plug disc (52) is connected to the bottom end of the second valve stem (51); a second valve core (41) matching the plug disc (52) is installed in the auxiliary input pipe (4); a plug rod (53) is connected to the bottom end of the plug disc (52); a groove matching the plug disc (52) is provided at the upper end of the second valve core (41); a pair of guide holes are provided on the side wall of the groove; and an L-shaped channel is provided between the plug disc (52) and the plug rod (53); The liquid storage box (6) comprises a lower protective shell (61) connected to the auxiliary input pipe (4), a liquid storage tank (62) is installed in the lower protective shell (61), a plug hole matching the plug rod (53) is provided at the input end of the liquid storage tank (62), and a guide pipe (63) communicating with the output end of the auxiliary input pipe (4) is connected to the liquid storage tank (62); The liquid discharge mechanism (7) comprises a sealing shell (71) having a flow guide channel, a liquid discharge pipe (72) being installed at the bottom end of the sealing shell (71), an upper end of the sealing shell (71) being slidably connected to a first valve core (11), a compression spring (73) being connected between the first valve core (11) and the sealing shell (71), and an electromagnet fixedly connected to the sealing shell (71) being arranged on the inner side of the compression spring (73).

2. An engine solenoid valve with cooling function according to claim 1, Features: An upper guide groove matching the first valve core (11) is provided at the upper portion of the sealing shell (71), and a lower guide cavity communicating with the liquid discharge pipe (72) is provided at the lower portion of the sealing shell (71), wherein the upper guide groove and the lower guide cavity are communicated via a guide hole.

3. An engine solenoid valve with cooling function according to claim 2, Features: The first valve core (11) is of a hollow structure, and through holes are provided at both upper and lower ends of the first valve core (11), and a liquid inlet hole matching the first valve stem (21) is provided at the top end of the first valve core (11).

4. An engine solenoid valve with cooling function according to claim 3, Features: A heat exchange cavity matching the liquid storage tank (62) is provided in the lower protective shell (61), a pair of fluid circulation pipes matching the heat exchange cavity are connected to the lower protective shell (61), and a circulating liquid pump is connected between the pair of fluid circulation pipes.

5. An engine solenoid valve with cooling function according to claim 4, Features: The input end of the solenoid valve tube (1) and the output end of the auxiliary input tube (4) are both provided with butt joints, one ends of the two butt joints are welded to each other, the other ends of the two butt joints are respectively close to the first valve core (11) and the second valve core (41), and the volumes of the two butt joints match the volume of the liquid storage tank (62).

6. An engine solenoid valve with cooling function according to claim 5, Features: It also includes a coordinated control system, the coordinated control system including a processor, the processor is connected to a control module and a monitoring module, the monitoring module is connected to a temperature sensor installed in the engine, and the electromagnetic unit (3) and the drainage mechanism (7) are both connected to the control module.

7. An engine solenoid valve with cooling function according to claim 6, Features: When the temperature sensor detects that the temperature inside the engine exceeds a set value, the plug disc (52) seals the upper end of the second valve core (41), and the fluid passes through the L-shaped channel and the liquid storage tank (6) and enters the solenoid valve tube (1).

8. An engine solenoid valve with cooling function according to claim 7, Features: After the plug disc (52) seals the upper end of the second valve core (41), the drain mechanism (7) is controlled to work for a set time to drain the fluid retained between the solenoid valve tube (1) and the auxiliary input tube (4), thereby ensuring that the cooling fluid output from the liquid storage tank (6) is not easily affected by other temperature fluids.

Images