[0032] In the specific embodiment of the present invention, the air tightness between the first valve body 101 and the second valve body 102 can be increased by the arrangement of the first sealing ring 19 and the second sealing ring 22 , thereby reducing the control valve body 1 The probability of internal gas leakage, thereby improving the accuracy of the oil outlet control valve.
[0033] A method for using an oil outlet control valve of an electronically controlled fuel injector, comprising the following steps:
[0034] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the improved concept thereof shall be included within the protection scope of the present invention.
[0021] Specifically, the distribution assembly 3 includes a distribution box 301, a first shunt pipe 302, a second shunt pipe 303, a first servo motor 304, a silicone ring 305 and a connecting valve 306. The distribution box 301 is fixedly installed on the bottom of the oil outlet 2, The first shunt pipe 302 is rotatably connected to the inner wall of the distribution box 301, the second shunt pipe 303 is arranged in multiples, and the plurality of second shunt pipes 303 are connected to the surface of the distribution box 301 and form an annular array. The first servo motor 304 It is fixedly installed on the bottom of the distribution box 301 , and the output shaft of the first servo motor 304 is rotatably connected to the first shunt pipe 302 , the silicone ring 305 is fixedly installed on the surface of the distribution box 301 , and the silicone ring 305 is in contact with the first shunt pipe 302 , the connecting valve 306 is fixedly installed on the surface of the second shunt pipe 303 .
[0022] In a specific embodiment of the present invention, through the cooperative use of the distribution box 301 , the first shunt pipe 302 , the second shunt pipe 303 , the first servo motor 304 , the silicone ring 305 and the connecting valve 306 , the oil outlet control valve can be Connect with multiple delivery pipes to achieve the effect of fuel distribution.
[0023] Specifically, the height moving assembly 11 includes a protection box 1101, a partition plate 1102, a second servo motor 1103, a first gear 1104, a threaded rod 1105, a second gear 1106 and a push plate 1107, and the protection box 1101 is fixedly installed on the first valve body At the top of 101, the partition plate 1102 is fixedly installed on the surface of the inner wall of the protection box 1101, the second servo motor 1103 is fixedly installed on the top of the protection box 1101, the first gear 1104 is fixedly connected to the surface of the output shaft of the second servo motor 1103, and is located at the top of the protection box 1101. Inside the protection box 1101, there are two threaded rods 1105. The two threaded rods 1105 are rotatably connected to the inner wall of the protection box 1101 and are located on both sides of the first gear 1104. The second gear 1106 is fixedly connected to the surface of the threaded rod 1105. And the second gear 1106 meshes with the first gear 1104 .
[0024] In the specific embodiment of the present invention, through the cooperation of the protective box 1101 , the partition plate 1102 , the second servo motor 1103 , the first gear 1104 , the threaded rod 1105 , the second gear 1106 and the push plate 1107 , the first movement is facilitated. The movement of the column 8 and the moving ring 10 changes the height of the second moving column 23, thereby changing the flow rate of the fuel.
[0025] Specifically, the air pressure adjustment assembly 12 includes an air outlet pipe 1201 , a chute 1202 , a filter screen 1203 , a filter hole 1204 , a slider 1205 , an installation groove 1206 , a reset mechanism 1207 and a sealing plate 1208 , and the air outlet pipe 1201 is installed on the third valve body 103 The surface of the air outlet pipe 1201 extends to the inner side of the third valve body 103, the chute 1202 is opened in multiples, and the plurality of chute grooves 1202 are opened on the surface of the inner wall of the air outlet pipe 1201, and the filter screen 1203 is slidably connected to the inner wall of the air outlet pipe 1201. The filter hole 1204 is opened on the surface of the filter screen 1203, the slider 1205 is fixedly installed on the surface of the filter screen 1203, and the slider 1205 is slidably connected to the surface of the chute 1202, and the installation slot 1206 is opened on the side of the air outlet pipe 1201. On the surface, the reset mechanism 1207 is fixedly installed on the surface of the inner wall of the installation groove 1206, and the sealing plate 1208 is fixedly installed on the top of the reset mechanism 1207. The reset mechanism 1207 includes a first cylinder 120701, a second cylinder 120702 and a fourth return spring 120703. A cylinder 120701 is fixedly installed on the surface of the installation groove 1206, the second cylinder 120702 is slidably connected to the inner wall of the first cylinder 120701, and the top of the second cylinder 120702 is fixedly connected to the sealing plate 1208, and the fourth return spring 120703 One end is fixedly connected to the inner wall of the first cylinder 120701 , and the other end of the fourth return spring 120703 is fixedly connected to the surface of the inner wall of the second cylinder 120702 .
[0026] In the specific embodiment of the present invention, through the cooperation of the air outlet pipe 1201, the chute 1202, the filter screen 1203, the filter hole 1204, the slider 1205, the installation groove 1206, the reset mechanism 1207 and the sealing plate 1208, when the control valve body 1 When the internal air pressure becomes high, the internal pressure of the control valve body 1 can be reduced, and the harmful gas in the fuel oil can be filtered out, thereby reducing the harm to the environment.
[0027] Specifically, a first return spring 9 is sleeved on the top of the first valve body 101 and located outside the first moving column 8 , and one end of the first return spring 9 is fixedly connected to the top of the first valve body 101 , and the first return spring 9 is The other end of the spring 9 is fixedly connected to the push plate 1107 .
[0028] In the specific embodiment of the present invention, through the setting of the first return spring 9, when the moving ring 10 is in contact with the sliding ring 7, it rebounds by its own pressure, thereby reducing the force generated by the rebound, and at the same time, the first The moving column 8 and the first return spring 9 play a protective role.
[0029] Specifically, the upper and lower surfaces of the inner wall of the third valve body 103 are provided with limit blocks 15 , and the limit blocks 15 are in contact with the output end of the solenoid valve needle valve 13 , and the inner wall of the third valve body 103 is far away from the solenoid valve needle valve 13 . A second return spring 17 is fixedly installed at one end.
[0030] In the specific embodiment of the present invention, through the cooperative use of the limit block 15 and the second return spring 17, the trajectory of the movement of the output shaft of the solenoid valve needle valve 13 can be limited, and the push block 16 and the control valve body 1 can be lowered at the same time. force between them.
[0031] Specifically, a first sealing ring 19 is provided on the inner wall of the first valve body 101 and located on the outer side of the first sealing ring 19 , and a second sealing ring 22 is provided on the inner side of the second valve body 102 and located on the outer side of the second vacuum chamber 20 . .
[0032] In the specific embodiment of the present invention, the air tightness between the first valve body 101 and the second valve body 102 can be increased by the arrangement of the first sealing ring 19 and the second sealing ring 22 , thereby reducing the control valve body 1 The probability of internal gas leakage, thereby improving the accuracy of the oil outlet control valve.
[0033] A method for using an oil outlet control valve of an electronically controlled fuel injector, comprising the following steps:
S1. When in use, firstly connect the oil inlet pipe 4 with the external oil inlet pipe, connect the oil discharge pipe 5 with the pipe, and connect the plurality of second shunt pipes 303 with the oil supply pipe respectively. When the fuel flows from the oil inlet pipe 4 After entering, the fuel will directly enter the inside of the third valve body 103, and then enter the inside of the first branch pipe 302 through the oil outlet 2, and then the first branch pipe 302 will distribute the fuel to the corresponding second branch pipe 303. ;
S2. When it is necessary to control the flow rate of the fuel, start the second servo motor 1103, the output shaft of the second servo motor 1103 rotates to drive the first gear 1104 to rotate, the first gear 1104 rotates to drive the second gear 1106 to rotate, and the first gear 1104 rotates. The rotation of the second gear 1106 drives the threaded rod 1105 to rotate. At this time, the push plate 1107 is adjusted accordingly under the action of the thread on the surface of the threaded rod 1105. The movement of the push plate 1107 drives the moving ring 10 to move, and the moving ring 10 moves the first moving column. 8. Slide on the inner wall of the sliding ring 7, at this time, the first return spring 9 is charged, and the solenoid valve needle valve 13 is activated and retracted at the same time. When the push block 16 contacts the limit block 15, the first moving column 8 The first retraction piston 21 can be pushed down, the first retraction piston 21 pushes the second movement column 23 to move, and the movement of the second movement column 23 drives the second retraction piston 26 to move down, and the third valve body 103 and the oil are discharged. The opening of the contact position of the head 2 is blocked, thereby reducing the flow rate of the fuel; at this time, part of the fuel will flow back to the fuel tank through the fuel discharge pipe 5
S3. When it is necessary to stop the fuel delivery, the second moving column 23 is moved to the bottom of the third valve body 103 by the height moving assembly 11. At this time, the second retracting piston 26 blocks the oil outlet 2, and the fuel is It will be blocked and returned to the original position through the oil discharge pipe 5, and the fuel supply efficiency can be adjusted through the most reciprocating motion of the height moving component 11, thereby improving the accuracy of the oil outlet control valve in controlling the fuel flow rate.
