CN218844466U - High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder - Google Patents
High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder Download PDFInfo
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- CN218844466U CN218844466U CN202222261405.3U CN202222261405U CN218844466U CN 218844466 U CN218844466 U CN 218844466U CN 202222261405 U CN202222261405 U CN 202222261405U CN 218844466 U CN218844466 U CN 218844466U
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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
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
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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
- F02M49/00—Fuel-injection apparatus in which injection pumps are driven or injectors are actuated, by the pressure in engine working cylinders, or by impact of engine working piston
- F02M49/02—Fuel-injection apparatus in which injection pumps are driven or injectors are actuated, by the pressure in engine working cylinders, or by impact of engine working piston using the cylinder pressure, e.g. compression end pressure
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a high-pressure injection apparatus of compressed gas pressure boost in automatically controlled diesel engine cylinder. The device comprises an air cylinder air inlet and exhaust device, a control device and a control device, wherein the air cylinder air inlet and exhaust device is connected with an engine cylinder cover and is used for controlling the exhaust of the engine cylinder cover; the pneumatic supercharging device is connected with the air inlet and exhaust device of the air cylinder and is used for supercharging the air; the oil sprayer is connected with the pneumatic supercharging device and sprays high-pressure oil generated by increasing the supercharging gas of the pneumatic supercharging device; and the electric control system is respectively connected with the air inlet and exhaust device of the air cylinder and the oil injector and is used for controlling the time of the air inlet and exhaust device of the air cylinder and the air input. The utility model has the advantages that: the utility model provides a transmission shaft device in the middle of having saved is made more simple, the manufacturing is easier, lower cost's an automatically controlled gas pressure boost high-pressure injection apparatus more, need not cam drive supercharging device, reduces the mechanical energy loss for the high-pressure fuel that realizes the sprayer production sprays and reduces the loss of useless power.
Description
Technical Field
The utility model relates to an engine fuel oil system field, especially a high-pressure injection apparatus of compressed gas pressure boost in automatically controlled diesel engine cylinder.
Background
The fuel injection system is the heart of the diesel engine and is a product with the highest added value, the technology is high, the high quality and the low cost in the manufacturing aspect are high thresholds of the industry, and the fuel injection system is a unique component which cannot be localized in the diesel engine at present.
The fuel injection system is a process for changing diesel into chemical energy to burn and do work through mechanical energy, and the high-efficiency use of machinery is realized.
The current research is mainly as follows: 1. oil return is reduced; 2. the oil supply rule is improved, and a dual-pressure system is preferably used when the low-load idle pressure is too high to be reduced; 3. the dynamic timing is improved, an intelligent pressure sensor is arranged on the oil injector, the pressure of the high-pressure common rail is different in low speed and high speed, the oil supply rule is variable, and an additional device is added; 4. the small oil quantity and the multiple injection precision are improved, such as piezoelectric oil injection and the like. At present, no pneumatic injection device with pressure of 160MPa exists in the market.
Disclosure of Invention
The utility model aims to provide an: a high-pressure injection device for electrically controlling the pressurization of compressed gas in a cylinder of a diesel engine is provided. The air quantity entering a boosting cylinder is controlled by a compressed air device in an electrically controlled diesel engine cylinder, and a small-area plunger is pushed by a large-area cylinder piston to change fuel from low pressure to high pressure.
The utility model discloses a following technical scheme realizes: a high-pressure injection device for pressurizing compressed gas in an electrically-controlled diesel engine cylinder comprises
The cylinder air inlet and outlet device 2 is connected with the engine cylinder cover 1 and is used for controlling the air exhaust of the engine cylinder cover 1;
the pneumatic supercharging device 8 is connected with the air inlet and exhaust device 2 of the cylinder and is used for supercharging gas;
the fuel injector 10 is connected with the pneumatic supercharging device 8 and used for injecting high-pressure fuel oil generated by increasing the supercharging gas of the pneumatic supercharging device 8; and
and the electronic control system ECU4 is respectively connected with the cylinder air inlet and exhaust device 2 and the oil injector 10 and is used for controlling the time and the air inlet amount of the cylinder air inlet and exhaust device 2.
Through the structure, gas flows into the pneumatic supercharging device to become high-pressure gas, and the air inflow is controlled through the air cylinder air inlet and outlet device, so that the opening or closing of the oil sprayer and the corresponding oil quantity are controlled, and the performance of the oil sprayer can be improved. Different from traditional diesel engine high pressure system, this scheme adopts the pressure boost plunger to produce the high pressure to spray high-pressure fuel.
Compared with the prior art, the utility model has the advantages that:
1. this patent provides a high-pressure injection apparatus of compressed gas pressure boost in automatically controlled diesel engine cylinder that the structure is simpler, it is easier, lower cost to make, and high-pressure common rail mechanical fuel injector is used for realizing that the high-pressure fuel that the sprayer produced sprays and reduces the loss of useless work.
2. The pneumatic pressurizing device is adopted for pressurizing, and large-pressure injection can be generated.
3. And an electric control system is adopted to control the air inflow, so that the precision of the oil sprayer is improved.
Drawings
Fig. 1 is a connection diagram of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the pneumatic booster apparatus of fig. 1.
Fig. 3 is a schematic structural view of an intake and exhaust device of the cylinder of fig. 1.
Fig. 4 is a partially enlarged view of fig. 3 at the upper and lower tapered surfaces of the valve element.
Description of the reference symbols: 1 engine cylinder cover, 2 cylinder air inlet and exhaust devices, 3 line elements, 4ECU, 5 speed sensor, 6 gear disc, 7 air pipe, 8 pneumatic supercharging device, 9 oil pipe, 10 oil injector, 11 oil injector spring, 12 oil nozzle, 13 cylinder rear cover, 14 supercharging spring, 15 air inlet, 16 exhaust port, 17 cylinder front cover, 18 first decompression hole, 19 plunger body, 20 oil inlet ball valve, 21 tightening cap, 22 positioning seat, 23 oil outlet valve tightening seat, 24, oil outlet, 25 retainer ring, 26 cylinder piston, 27 piston rod, 28 cylinder body, 29 supercharging plunger, 30 positioning screw, 31 valve seat, 32 oil inlet hole, 33 oil outlet valve, 34 oil outlet valve upper seat, 35 oil outlet valve spring, 36 oil outlet valve lower seat, sealing gasket, 38 electromagnetic valve, 39 armature, 40 control valve core, 41 second decompression hole, 42 valve seat fixing screw, 43 air inlet hole, 44 control valve body, 45 electromagnetic valve fixing screw, 46 cushion block, 47 positioning screw, 48 exhaust hole, 49 exhaust hole fixing seat, 50 adjusting gasket, 51 control spring, 52 hole, 53 upper conical surface of valve core, 54 lower conical surface of valve core.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The invention is explained in detail below with reference to the accompanying drawings:
as shown in fig. 1: a high-pressure injection device for pressurizing compressed gas in an electrically-controlled diesel engine cylinder comprises
The cylinder air inlet and outlet device 2 is connected with the engine cylinder cover 1 and is used for controlling the air exhaust of the engine cylinder cover 1;
the pneumatic supercharging device 8 is connected with the air inlet and exhaust device 2 of the cylinder and is used for supercharging gas;
the fuel injector 10 is connected with the pneumatic supercharging device 8 and used for injecting high-pressure fuel oil generated by increasing the supercharging gas of the pneumatic supercharging device 8; and
and the electronic control system ECU4 is respectively connected with the cylinder air inlet and exhaust device 2 and the oil injector 10 and is used for controlling the time and the air inlet amount of the cylinder air inlet and exhaust device 2.
Here, a hole is formed in the engine head 1, and the gas in the inner part is discharged to the pneumatic booster 8 when the engine does work.
The pneumatic supercharging device 8 comprises a cylinder part, a plunger piston part and an oil outlet valve part which are connected in sequence from back to front;
the cylinder part comprises a cylinder body 28, a cylinder piston 26 and a piston rod 27, the cylinder piston 26 is connected with the piston rod 27, the piston rod 27 extends out of the cylinder body 28 through a cylinder front cover 17 arranged on the front side of the cylinder body 28, an exhaust port 16 and an intake port 15 are respectively arranged on the front side and the rear side of the side wall of the cylinder body 28, and the intake port 15 is connected with the cylinder intake and exhaust device 2; a pressurizing spring 14 is sleeved on the periphery of the piston rod 27, and the pressurizing spring 14 is positioned between the cylinder front cover 17 and the cylinder piston 26;
the plunger part comprises a plunger body 19 and a pressurizing plunger 29, a channel which is through from front to back is arranged in the plunger body 19, the channel is divided into a front section channel, a middle section channel and a rear section channel, the caliber of the middle section channel is smaller than that of the rear section channel, the caliber of the front section channel is larger than that of the middle section channel, and the caliber of the middle section channel is the same as that of the pressurizing plunger 29; the side wall of the plunger piston body 19 is also provided with a first pressure relief hole 18 communicated with the rear section channel; the rear end of the pressurizing plunger 29 is fixedly connected with the piston rod 27;
the oil outlet valve part also comprises a valve seat 31, a positioning seat 22 and an oil outlet valve fastening seat 23 which are sequentially arranged from back to front; the middle parts of the valve seat 31, the positioning seat 22 and the oil outlet valve tight seat 23 are provided with oil outlet holes which are communicated front and back; an oil inlet channel which is communicated with the front section channel and is provided with an oil inlet ball valve 20 is arranged on the valve seat 31, the oil inlet channel is communicated with the outside through an oil inlet hole 32 formed in the side wall of the valve seat 31, and the oil inlet ball valve 20 moves forwards to cut off the oil inlet channel; a limiting hole is formed in the rear end of the positioning seat 22, an oil outlet ball valve 33, an oil outlet valve upper seat 34 and an oil outlet valve lower seat 36 are arranged in the limiting hole from back to front, an oil outlet valve spring 35 is arranged between the oil outlet valve upper seat 34 and the oil outlet valve lower seat 36, the oil outlet ball valve 33 is controlled to keep the trend of moving backwards through the oil outlet valve spring 35, and the oil outlet ball valve 33 moves backwards to cut off the oil outlet hole; an oil outlet 24 is arranged at the front end of the oil outlet valve fastening seat 23, and the oil outlet 24 is connected with the oil injector 10.
The cylinder air inlet and exhaust device 2 comprises a control valve body 44, a fixed seat 49, a control valve core 40, an armature 39 and an electromagnetic valve 38 which are sequentially arranged from bottom to top;
longitudinal channels are arranged in the control valve body 44 and the fixed seat 49, a control valve core 40 is arranged in the channels, the upper part of the control valve core 40 is connected with the armature 39, and the armature 39 is controlled by the electromagnetic valve 38 to realize the up-and-down movement of the control valve core 40; an upper annular groove and a lower annular groove are respectively annularly arranged on the control valve core 40; the control valve body 44 is provided with an air inlet hole 43 and an air outlet hole 52 which are staggered in height, so that the control valve core 40 moves up and down, and the communication or the partition of the air inlet hole 43 and the air outlet hole 52 is realized by utilizing the lower annular groove; wherein, the air inlet 43 is connected with the engine cylinder cover 1, and the air outlet 52 is connected with the pneumatic supercharging device 8; a second pressure relief hole 41 is formed in the side face of the fixed seat 49, and the second pressure relief hole 41 is used for enabling the pressure inside the armature 39 to be the same as the atmospheric pressure; the side surface of the fixed seat 49 is also provided with an exhaust hole 48, and the exhaust hole 48 corresponds to the upper annular groove; a control spring 51 is sleeved outside the control valve core 40, the upper end of the control spring 51 is propped against the lower end surface of the fixed seat 49, and the lower end of the control spring 51 is connected with the control valve core 40.
The electronic control system comprises an ECU4, a speed sensor 5 and a gear plate 6, the gear plate 6 is connected with a gear inside the engine, the speed sensor 5 is arranged on one side of the gear plate 6 and used for detecting the rotating speed of the gear plate, and the speed sensor 5 is connected with the ECU4 through a wire harness 3.
The utility model discloses in, the engine cylinder head 1 is connected to the inlet port 43 of cylinder air inlet and outlet device 2. The cylinder air inlet and outlet device 2 controls the air flow entering the pneumatic supercharging device 8, and after the oil nozzle 12 of the oil injector 10 is injected, the air in the pneumatic supercharging device 8 is discharged through the air outlet hole 48, so that the cylinder piston 26 is reset.
As shown in fig. 3: and the pneumatic pressurizing device 8 is assembled on the air inlet and outlet device 2 of the cylinder and connected through an air pipe 7 to pressurize the air inlet and outlet device, so that high pressure is generated. The air pipe 7 is connected with the air outlet 52 of the air inlet and outlet device 2 of the cylinder, the air inlet 43 and the air inlet 15 of the pneumatic supercharging device 8 respectively.
The pneumatic supercharging device 8 and the fuel injector 10 are connected through a fuel pipe 9.
The oil injector 10 is connected with the pneumatic supercharging device 8, and when the pneumatic supercharging device 8 generates high-pressure oil, the oil nozzle 12 can be lifted to inject oil.
And the electric control system is respectively connected with the cylinder air inlet and exhaust device 2 and the oil injector 10. Specifically, the ECU4 in the electronic control system is connected to the electromagnetic valve 38 of the cylinder intake and exhaust device 2 and the rotation speed sensor 5 through the wiring harness 3. When the engine works, the gear wheel 6 is driven to rotate, and the electromagnetic valve 38 starts to be electrified after the rotation speed sensor 5 obtains a signal.
The pneumatic supercharging device 8 comprises a cylinder piston 26 connected with a piston rod 27 through interference fit for pushing a supercharging plunger 29 to supercharge. The oil inlet ball valve 20 is mounted on the valve seat 31, and high-pressure fuel flows in from the oil inlet hole 32 to function as a check valve.
The pressurizing spring 14 is installed between the cylinder piston 26 and the cylinder front cover 17, and plays a role in back-and-forth movement of air charging and discharging of the cylinder piston.
The oil outlet ball valve 33 is mounted on the oil outlet valve upper seat 34, and becomes a check valve by the oil outlet valve spring 35 and the oil outlet valve lower seat 36, and controls the fuel pressurization of the pressurizing plunger. The oil outlet ball valve 33 is installed at the rear end of the positioning seat 22 and is provided with a limiting hole.
The valve seat 31 and the positioning seat 22 are fixed on the plunger body 19 through the tightening cap 21, and positioning and sealing at high pressure are realized.
The joint between the oil outlet valve tight seat 23 and the positioning seat 22 is provided with a sealing gasket 37, so that high pressure can be realized for sealing.
The plunger 19 and the cylinder 28 are fixedly connected by 4 set screws 30.
The rear end of the cylinder block 28 is provided with a cylinder rear cover 13, the cylinder rear cover 13 is fixed on the cylinder block 28 through a retainer ring 25, the cylinder rear cover 13 and the cylinder front cover 17 are both provided with a sealing ring, and the sealing ring is in clearance fit with the cylinder block 28 and is sealed through the sealing ring. For preventing gas leakage.
The piston rod 27 is in clearance fit with the cylinder front cover 17, and the fit clearance is small, so that air leakage is prevented.
The pressurizing plunger 29 is in clearance fit with the middle passage of the cylinder block 19, and the fit clearance is small, so that low-pressure fuel is changed into high-pressure fuel.
The air inlet 15 is communicated with the left side of the cylinder piston 26 and is used for pushing the cylinder piston to move forwards and exhausting. The exhaust port 16 communicates with the right side of the cylinder piston 26 so that exhaust is performed when the cylinder piston 26 moves forward.
The first pressure release hole 18 is used for releasing pressure when the piston rod 27 and the pressurizing plunger 29 move forward.
As shown in fig. 3 and 4: in the cylinder air inlet and exhaust device, the control valve core 40 is in clearance fit with the longitudinal channel in the control valve body 44, so that air leakage is prevented. And the control valve core is sealed with a conical surface 54 of the control valve body 44 for control of high pressure air intake.
The control valve core 40 is in clearance fit with the fixed seat 49, and the control valve core 40 is sealed with the valve core upper conical surface 53 of the fixed seat 49 and used for controlling high-pressure air exhaust.
The control spring 51 is installed between the control valve core 40 and the fixed seat 49, and is used for controlling the opening and closing of the upper and lower valves of the valve core 40. The control spring 51 here always maintains a spring force for the downward movement of the control valve member 40.
An adjusting gasket 50 is arranged between the fixed seat 49 and the control valve body 44, and the three are fixed through 4 valve seat fixing screws; the assembly is such that the control valve core 40 does not become jammed during movement.
Here, the shim 50 is mounted between the control valve body 44 and the fixed seat 49 for the main purpose of adjusting the lift gap of the control valve spool 40.
The armature 39 is mounted on the control valve core 40 and fixed by a set screw 47; the upper part of the fixed seat 49 is provided with a cushion block 46, the cushion block 46 is arranged around the periphery of the armature 39, and a clearance fit clearance is needed between the armature 39 and the cushion block 46.
The fit clearance between the electromagnetic valve 38 and the armature 39 is about 0.3mm, and the armature 39 drives the control valve core 41 to move upwards.
The solenoid valve 38 and the spacer 46 are fixed on a fixed seat 49 through a solenoid valve fixing screw 45.
The primary purpose of the spacer 46 is to control the clearance of the armature 39 from the solenoid valve 38. The upper part of the fixed seat 49 of the second pressure relief hole 41 is provided with a cushion block 46 for exhausting the air pressure inside the armature.
The utility model discloses a theory of operation is:
when the piston of the diesel engine enters a compression stage, the gear plate 6 is driven to rotate, after the piston does work and explodes, a part of gas is introduced into the air cylinder air inlet and exhaust device 2 through an engine cylinder cover before the piston does not reach an upper dead point, when the rotating speed sensor 5 detects that the piston does work and before a lower dead point, the electromagnetic valve 38 on the air cylinder air inlet and exhaust device is electrified, the armature 39 is sucked, the control valve core 40 is driven to move upwards, and at the moment, the lower conical surface of the lower annular groove in the control valve core 40 is not sealed with the valve core lower conical surface 54 of the control valve body 44. The upper conical surface of the upper annular groove in the control valve spool 40 seals with the spool upper conical surface 53 of the fixed seat 49. The gas flows into the gas outlet 52 through the gas inlet hole 43 with constant pressure. When the gas flows into the pneumatic booster 8 through the gas pipe 7, the cylinder piston 26 is pushed to move forwards. 0.5MPA low-pressure fuel flows in from the oil inlet hole 32, pushes the oil inlet ball valve 20 to move backwards, the low-pressure fuel flows into the inner cavity of the plunger, when the cylinder piston 26 moves forwards, the pressurizing plunger 29 also moves forwards, the low-pressure fuel is changed into high-pressure fuel through the pneumatic pressurizing device 8, the high-pressure fuel flows into the oil injector 10 through the oil pipe 9 by overcoming the oil outlet valve spring 34 through the oil outlet valve 33, and when high pressure is generated in the oil injector 10 and the elasticity of the oil injector spring 11 is overcome, the oil nozzle 12 starts to inject. After injection, the electromagnetic valve 38 is closed, the armature 39 is not electrified, and because the control valve core 40 is only acted by the spring force of the control spring 51, the lower conical surface of the lower annular groove in the control valve core 40 is sealed with the valve core lower conical surface 54 of the control valve body 44, at the moment, the piston of the engine just reaches the top dead center, and the fuel injector performs injection combustion due to the internal sealing of the piston cylinder.
When the electromagnetic valve 38 is not powered on and the engine piston is worked, the lower conical surface of the lower annular groove in the control valve core 40 is sealed with the valve core lower conical surface 54 of the control valve body 44, and the upper conical surface of the upper annular groove in the control valve core 40 is not sealed with the valve core upper conical surface 53 of the fixed seat 49; the cylinder piston 26 moves backwards under the force of the pressurizing spring 14 to realize resetting, so that the air in the air inlet and outlet device 2 of the cylinder is exhausted from the air outlet hole 48 in the air switch device, and at the moment, the cylinder piston 26 and the pressurizing plunger 29 are reset. When the piston cylinder of the engine reaches the designated position for doing work, the electromagnetic valve 38 starts to work again, and the steps are repeated.
Finally, it should be noted that the above mentioned is only a preferred embodiment of the present invention, and the present invention is not limited to the above mentioned, and although the present invention has been described in detail with reference to the above mentioned embodiments, it will be obvious to those skilled in the art that the technical solutions described in the above mentioned embodiments can be modified, or some technical features can be equally replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a high-pressure injection apparatus of automatically controlled diesel engine cylinder internal compression gas pressure boost which characterized in that: it comprises
The cylinder air inlet and exhaust device (2) is connected with the engine cylinder cover (1) and is used for controlling the exhaust of the engine cylinder cover (1);
the pneumatic supercharging device (8) is connected with the air inlet and outlet device (2) of the air cylinder and is used for supercharging gas;
the fuel injector (10) is connected with the pneumatic supercharging device (8) and is used for injecting high-pressure fuel oil generated by increasing the supercharging gas of the pneumatic supercharging device (8); and
and the electric control system is respectively connected with the air cylinder air inlet and exhaust device (2) and the oil injector (10) and is used for controlling the time and the air intake amount of the air cylinder air inlet and exhaust device (2).
2. The high-pressure injection device for supercharging the compressed gas in the cylinder of the electrically controlled diesel engine according to claim 1, wherein:
the pneumatic supercharging device (8) comprises a cylinder part, a plunger part and an oil outlet valve part which are sequentially connected from back to front;
the cylinder part comprises a cylinder body (28), a cylinder piston (26) and a piston rod (27), the cylinder piston (26) is connected with the piston rod (27), the piston rod (27) extends out of the cylinder body (28) through a cylinder front cover (17) arranged on the front side of the cylinder body (28), an exhaust port (16) and an air inlet (15) are respectively arranged on the front side and the rear side of the side wall of the cylinder body (28), and the air inlet (15) is connected with an air inlet and exhaust device (2) of the cylinder; a pressurizing spring (14) is sleeved on the periphery of the piston rod (27), and the pressurizing spring (14) is positioned between the cylinder front cover (17) and the cylinder piston (26);
the plunger part comprises a plunger body (19) and a pressurizing plunger (29), a channel which is through from front to back is arranged in the plunger body (19), the channel is divided into a front section channel, a middle section channel and a rear section channel, the caliber of the middle section channel is smaller than that of the rear section channel, the caliber of the front section channel is larger than that of the middle section channel, and the caliber of the middle section channel is the same as that of the pressurizing plunger (29); the side wall of the plunger piston body (19) is also provided with a first pressure relief hole (18) communicated with the rear section channel; the rear end of the pressurizing plunger (29) is fixedly connected with the piston rod (27);
the oil outlet valve part also comprises a valve seat (31), a positioning seat (22) and an oil outlet valve fastening seat (23) which are sequentially arranged from back to front; the middle parts of the valve seat (31), the positioning seat (22) and the oil outlet valve tight seat (23) are provided with oil outlet holes which are communicated from front to back; an oil inlet channel which is communicated with the front section channel and is provided with an oil inlet ball valve (20) is arranged on the valve seat (31), the oil inlet channel is communicated with the outside through an oil inlet hole (32) formed in the side wall of the valve seat (31), and the oil inlet ball valve (20) cuts off the oil inlet channel by moving forwards; a limiting hole is formed in the rear end of the positioning seat (22), an oil outlet ball valve (33), an oil outlet valve upper seat (34) and an oil outlet valve lower seat (36) are arranged in the limiting hole from the rear to the front, an oil outlet valve spring (35) is arranged between the oil outlet valve upper seat (34) and the oil outlet valve lower seat (36), the oil outlet ball valve (33) is controlled to keep the trend of moving backwards through the oil outlet valve spring (35), and the oil outlet ball valve (33) moves backwards to cut off the oil outlet hole; an oil outlet (24) is arranged at the front end of the oil outlet valve tight seat (23), and the oil outlet (24) is connected with the oil injector (10).
3. The high-pressure injection device for supercharging the compressed gas in the cylinder of the electrically controlled diesel engine according to claim 1, wherein: the air cylinder air inlet and exhaust device (2) comprises a control valve body (44), a fixed seat (49), a control valve core (40), an armature (39) and an electromagnetic valve (38) which are sequentially arranged from bottom to top;
longitudinal channels are arranged in the control valve body (44) and the fixed seat (49), a control valve core (40) is arranged in the channels, the upper part of the control valve core (40) is connected with the armature (39), and the armature (39) is controlled by the second electromagnetic valve (38) to realize the up-and-down movement of the control valve core (40); an upper annular groove and a lower annular groove are respectively arranged on the control valve core (40) in an annular manner; an air inlet hole (43) and an air outlet hole (52) which are staggered in height are arranged on the control valve body (44), so that the control valve core (40) moves up and down, and the communication or the partition of the air inlet hole (43) and the air outlet hole (52) is realized by utilizing the lower annular groove; wherein, the air inlet (43) is connected with the engine cylinder cover (1), and the air outlet (52) is connected with the pneumatic supercharging device (8); a second pressure relief hole (41) is formed in the side face of the fixed seat (49), and the second pressure relief hole (41) is used for enabling the pressure inside the armature (39) to be the same as the atmospheric pressure; the side surface of the fixed seat (49) is also provided with an exhaust hole (48), and the exhaust hole (48) corresponds to the upper annular groove; a control spring (51) is sleeved outside the control valve core (40), the upper end of the control spring (51) is propped against the lower end face of the fixed seat (49), and the lower end of the control spring (51) is connected with the control valve core (40).
4. The high-pressure injection device for supercharging compressed gas in the cylinder of an electrically controlled diesel engine according to claim 1, wherein: the electronic control system comprises an ECU (4), a rotating speed sensor (5) and a gear disc (6), wherein the gear disc (6) is connected with a gear inside an engine, the rotating speed sensor (5) is arranged on one side of the gear disc (6) and used for detecting the rotating speed of the gear disc, and the rotating speed sensor (5) is connected with the ECU (4) through a wire harness (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210573114X | 2022-05-25 | ||
| CN202210573114.XA CN115013205A (en) | 2022-05-25 | 2022-05-25 | High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218844466U true CN218844466U (en) | 2023-04-11 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210573114.XA Pending CN115013205A (en) | 2022-05-25 | 2022-05-25 | High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder |
| CN202211035693.9A Pending CN115288899A (en) | 2022-05-25 | 2022-08-26 | High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder |
| CN202222261405.3U Active CN218844466U (en) | 2022-05-25 | 2022-08-26 | High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210573114.XA Pending CN115013205A (en) | 2022-05-25 | 2022-05-25 | High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder |
| CN202211035693.9A Pending CN115288899A (en) | 2022-05-25 | 2022-08-26 | High-pressure injection device for pressurizing compressed gas in electric control diesel engine cylinder |
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| CN (3) | CN115013205A (en) |
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2022
- 2022-05-25 CN CN202210573114.XA patent/CN115013205A/en active Pending
- 2022-08-26 CN CN202211035693.9A patent/CN115288899A/en active Pending
- 2022-08-26 CN CN202222261405.3U patent/CN218844466U/en active Active
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| Publication number | Publication date |
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| CN115013205A (en) | 2022-09-06 |
| CN115288899A (en) | 2022-11-04 |
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