CN211144678U - Fuel oil cut-off control cylinder of high-power diesel engine - Google Patents
Fuel oil cut-off control cylinder of high-power diesel engine Download PDFInfo
- Publication number
- CN211144678U CN211144678U CN201921789401.4U CN201921789401U CN211144678U CN 211144678 U CN211144678 U CN 211144678U CN 201921789401 U CN201921789401 U CN 201921789401U CN 211144678 U CN211144678 U CN 211144678U
- Authority
- CN
- China
- Prior art keywords
- fuel
- piston
- control
- cut
- cylinder body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
The utility model belongs to the technical field of diesel engine fuel control and regulation, and relates to a high-power diesel engine fuel cut-off control cylinder, which comprises a cylinder body, a front end cover and a rear end cover which are respectively and fixedly arranged at the front end and the rear end of the cylinder body, a fuel cut-off piston with the rear end tangent to the inner wall of the cylinder body is arranged in the front end cover in a penetrating way, a control piston for pushing the fuel cut-off piston to move along the length direction of the cylinder body is sleeved outside the fuel cut-off piston, a fuel control air inlet is arranged on the cylinder body at the front end of the control piston, a fuel cut-off air inlet is arranged on the cylinder body at the rear end of the fuel cut-off piston, the closed space formed by the front, the control cylinder is installed on a diesel engine, can adjust the fuel quantity of a fuel injection pump, controls the fuel quantity entering a combustion chamber, and achieves the functions of low-speed fuel limiting and emergency stop of the diesel engine.
Description
Technical Field
The utility model belongs to the technical field of diesel engine fuel control, regulation, a high-power diesel engine fuel cuts off control cylinder is related to.
Background
In the working process of the diesel engine, when the rotating speed of the diesel engine is low, the air inflow of the diesel engine is low, when the sudden load of the diesel engine is too large, fuel oil can not be completely combusted and continuously emits black smoke, and meanwhile, when the diesel engine is in an emergency, the diesel engine needs to be rapidly changed from a working state to a parking state, so that the problem that the diesel engine emits black smoke at a low speed is solved, and the emergency parking is realized.
In the prior art, two groups of devices are respectively adopted for controlling the problems of black smoke emission and emergency stop of the diesel engine at low speed, so that the manufacturing cost of the diesel engine body is increased, the appearance structure of the diesel engine body is complex, and the research on a fuel control device capable of simultaneously supplying fuel in the start-stop stage of the diesel engine is necessary, and a fuel cut-off control cylinder is the heart of the fuel control device, so that the design of the integrated fuel cut-off control cylinder capable of effectively controlling the fuel supply in the start-stop stage of the diesel engine is particularly important.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a solve the problem that above-mentioned current diesel engine low speed oil limit device, emergency stop device exist, provide a high-power diesel engine fuel and cut off control cylinder, this control cylinder is installed on the diesel engine, can adjust injection pump fuel quantity, and the control gets into the fuel quantity of combustion chamber, realizes diesel engine low speed oil limit, emergency stop function.
In order to achieve the above object, the utility model provides a high-power diesel engine fuel cuts off control cylinder, the power distribution device comprises a cylinder body, front end housing and the rear end cap at both ends around the cylinder body respectively fixed mounting, wear to be equipped with the tangent fuel cut-off piston of rear end and cylinder body inner wall in the front end cap, the fuel cut-off piston overcoat is equipped with the control piston that promotes the fuel cut-off piston and remove along cylinder body length direction, set up the fuel control air inlet of taking fuel control solenoid valve on the cylinder body of control piston front end, set up the fuel that takes the fuel to cut off the solenoid valve on the cylinder body of fuel cut-off piston rear end and cut off the air inlet, the front end cap, the airtight space that the cylinder body formed with the control piston is the control cylinder, the.
The beneficial effect of this basic scheme lies in: the fuel cut-off piston and the control piston are assembled inside the cylinder body in a mutually sleeved mode, the closed space formed by the front end cover, the cylinder body and the control piston is a control cylinder, the closed space formed by the cylinder body, the control piston and the fuel cut-off piston is a cut-off cylinder, when pressurized air enters the control cylinder through the fuel control air inlet, the pressurized air pushes the control piston to push the fuel cut-off piston, the fuel cut-off piston is externally connected with a fuel injection pump accelerator, the fuel injection pump accelerator is reduced through movement of the fuel cut-off piston, and the fuel limit function is achieved. When pressurized air enters the cut-off cylinder through the fuel cut-off air inlet, the pressurized air pushes the fuel cut-off piston, and the fuel cut-off piston pulls the fuel injection pump to a parking position.
Furthermore, a spring is fixedly mounted on one side, close to the rear end cover, of the oil cut-off piston, an adjusting bolt is assembled in the middle of the rear end cover, and the adjusting bolt controls the stroke of the oil cut-off piston through screwing in length. Has the advantages that: the cooperation of spring and adjusting bolt plays the effect of restriction fuel cut-off piston shift position, restricts the stroke of fuel cut-off piston.
Furthermore, a connecting nut is fixedly mounted at one end, far away from the front end cover, of the fuel cut-off piston, and a pull ring connected with an accelerator of the fuel injection pump is hinged to the connecting nut. Has the advantages that: the pull ring on the outer side of the connecting nut is connected with the fuel injection pump accelerator, the fuel cut-off piston is connected with the pull ring through the connecting nut, and finally the fuel injection pump accelerator is adjusted through the pull ring.
Further, the connecting nut is tightly matched with the oil-cut-off piston.
Furthermore, the front end cover, the rear end cover and the cylinder body are connected through bolt fasteners. Has the advantages that: the cylinder body is respectively fixedly connected with the front end cover and the rear end cover through the bolt fasteners, so that the cylinder body, the front end cover and the rear end cover can be conveniently disassembled and assembled.
Furthermore, the middle part of the control piston is fixedly provided with an annular block tangent to the inner wall of the cylinder body in an integrated forming way. Has the advantages that: the annular block is matched with the step in the middle of the cylinder body, so that the function of limiting the moving position of the control piston is achieved, and the stroke of the control piston is limited.
Furthermore, sealing rings are sleeved at the tangent positions of the control piston and the oil cut-off piston and the inner wall of the cylinder body.
The beneficial effects of the utility model reside in that:
the fuel oil cutting control cylinder of the high-power diesel engine disclosed by the utility model is provided with a fuel oil cutting cylinder for cutting off fuel oil; and a fuel control cylinder connected in series is additionally arranged for controlling excessive fuel injection. Through the feedback of the rotating speed of the diesel engine and the feedback of the pressure of the pressurized air under different working conditions, the fuel oil cuts off the action of the air cylinder, and the fuel injection pump is pulled to a parking position or a fuel limit position. The fuel oil cutting cylinder integrates a fuel oil cutting function and a fuel oil control function, and is installed on a diesel engine body to achieve the functions of emergency stop and low-speed oil limit of the diesel engine. When the diesel engine needs to stop in an emergency, the diesel engine can quickly respond to and execute an oil stopping action; when the diesel engine is in low rotating speed and under the condition of sudden load increase, the oil unloading action can be quickly responded and executed, and the fuel quantity sprayed into the combustion chamber is limited, so that the duration time of black smoke emission is shortened, the oil consumption is reduced, and the emission is reduced. Meanwhile, the appearance is simple and attractive, the processing difficulty is reduced, and the manufacturing cost is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is the structural schematic diagram of the fuel cut-off control cylinder of the high-power diesel engine of the utility model.
Reference numerals: the device comprises a pull ring 1, a connecting nut 2, a front end cover 3, a cylinder body 4, a control piston 5, an oil cut-off piston 6, an adjusting bolt 7, a spring 8 and a rear end cover 9.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The diesel engine in the patent is a reciprocating internal combustion engine with compression ignition.
The fuel cut-off control cylinder is a part integrating a fuel cut-off function and a fuel control function.
The fuel injection pump is an important component of combustion supply, and delivers high-pressure fuel to the fuel injector at regular time, quantity and constant pressure according to the operation condition of the diesel engine and the working sequence of the cylinders.
The fuel oil cut-off control cylinder of the high-power diesel engine shown in figure 1 comprises a cylinder body 4, a front end cover 3 and a rear end cover 9, wherein the front end cover 3 and the rear end cover 9 are fixedly installed at the front end and the rear end of the cylinder body 4 respectively, and the front end cover 3, the rear end cover 9 and the cylinder body 4 are connected through bolt fasteners. The cylinder body 4 is fixedly connected with the front end cover 3 and the rear end cover 9 through bolt fasteners, so that the cylinder body 4, the front end cover 3 and the rear end cover 9 can be conveniently disassembled.
The front end cover 3 is internally provided with an oil cut-off piston 6 with the rear end tangent to the inner wall of the cylinder body 4 in a penetrating way, the oil cut-off piston 6 is externally sleeved with a control piston 5 for pushing the oil cut-off piston 6 to move along the length direction of the cylinder body 4, the middle part of the control piston 5 is fixedly provided with an annular block tangent to the inner wall of the cylinder body 4 in an integrated forming way, and the tangent parts of the control piston 5, the oil cut-off piston 6 and the inner wall of the cylinder. The block is tangent to the inner wall of the cylinder 4, and the rear part of the oil-cut piston 6 is tangent to the inner wall of the cylinder 4.
A fuel control air inlet with a fuel control electromagnetic valve is formed in the cylinder body 4 at the front end of the control piston 5, a fuel cutting air inlet with a fuel cutting electromagnetic valve is formed in the cylinder body 4 at the rear end of the fuel cut-off piston 6, a closed space formed by the front end cover 3, the cylinder body 4 and the control piston 5 is a control cylinder, and a closed space formed by the cylinder body 4, the control piston 5 and the fuel cut-off piston 6 is a cutting cylinder. The one end fixed mounting that front end housing 3 was kept away from to fuel cut-off piston 6 has coupling nut 2, and the last articulated pull ring 1 that is connected with the injection pump throttle that has of coupling nut 2. One side of the oil cut-off piston 6 close to the rear end cover 9 is fixedly provided with a spring 8, the middle part of the rear end cover 9 is provided with an adjusting bolt 7, and the adjusting bolt 7 controls the stroke of the oil cut-off piston 6 by screwing in the length.
In the fuel oil cut-off control cylinder, a closed space formed by the front end cover 3, the cylinder body 4 and the control piston 5 is a control cylinder, and a closed space formed by the cylinder body 4, the control piston 5 and the fuel cut-off piston 6 is a cut-off cylinder. When pressurized air enters the control cylinder, the pressurized air pushes the control piston 5 to push the fuel cut-off piston 6, the fuel cut-off piston 6 is connected with the pull ring 1 through the connecting nut 2, and finally the throttle of the fuel injection pump is reduced through the pull ring 1 to realize the fuel limit function. When the pressurized air enters the cutting cylinder, the pressurized air pushes the oil cut-off piston 6, the oil cut-off piston 6 drives the pull ring 1 to act, and finally the oil injection pump is pulled to a parking position through the pull ring 1, so that the oil stop action is realized.
The fuel oil cut-off control cylinder of the high-power diesel engine ingeniously connects the fuel oil control cylinder and the fuel oil cut-off cylinder in series, so that the integrated control of fuel oil cut-off and control is realized, the fuel oil control cylinder and the fuel oil cut-off cylinder are omitted from being processed respectively, the processing difficulty is reduced, and the manufacturing cost is reduced.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (7)
1. The fuel oil cut-off control cylinder of the high-power diesel engine is characterized by comprising a cylinder body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixedly installed at the front end and the rear end of the cylinder body respectively, a fuel oil cut-off piston with the rear end tangent to the inner wall of the cylinder body penetrates through the front end cover, a control piston for pushing the fuel oil cut-off piston to move along the length direction of the cylinder body is sleeved outside the fuel oil cut-off piston, a fuel oil control air inlet with a fuel oil control electromagnetic valve is formed in the cylinder body at the front end of the control piston, a fuel oil cut-off air inlet with the fuel oil cut-off electromagnetic valve is formed in the cylinder body at the rear end of the fuel oil cut-off piston.
2. The fuel cut-off control cylinder for the high-power diesel engine according to claim 1, wherein a spring is fixedly installed on one side of the fuel cut-off piston close to the rear end cover, and an adjusting bolt is assembled in the middle of the rear end cover and controls the stroke of the fuel cut-off piston by screwing in the length of the adjusting bolt.
3. The high power diesel engine fuel cut-off control cylinder of claim 2, characterized in that a connecting nut is fixedly mounted on one end of the fuel cut-off piston far away from the front end cover, and a pull ring connected with an accelerator of the fuel injection pump is hinged on the connecting nut.
4. The high power diesel fuel cutoff control cylinder of claim 3 wherein the coupling nut is a close fit with the cutoff piston.
5. The high power diesel fuel cut-off control cylinder of claim 4, wherein the front end cap, the rear end cap and the cylinder body are connected by bolt fasteners.
6. A fuel cut-off control cylinder for a high-power diesel engine according to claim 5, characterized in that the middle part of the control piston is fixedly provided with an annular block which is tangential to the inner wall of the cylinder body in an integrated manner.
7. The fuel cut-off control cylinder for the high-power diesel engine as claimed in claim 6, wherein the control piston and the fuel cut-off piston are sleeved with sealing rings at the tangency positions with the inner wall of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789401.4U CN211144678U (en) | 2019-10-23 | 2019-10-23 | Fuel oil cut-off control cylinder of high-power diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789401.4U CN211144678U (en) | 2019-10-23 | 2019-10-23 | Fuel oil cut-off control cylinder of high-power diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211144678U true CN211144678U (en) | 2020-07-31 |
Family
ID=71770309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921789401.4U Active CN211144678U (en) | 2019-10-23 | 2019-10-23 | Fuel oil cut-off control cylinder of high-power diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211144678U (en) |
-
2019
- 2019-10-23 CN CN201921789401.4U patent/CN211144678U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4502283A (en) | Turbocharged engine driven positive displacement blower having a bypass passage | |
| US9897059B2 (en) | Diesel engine | |
| RU2647167C2 (en) | Method and system of operating vehicle engine and supercharged engine system | |
| JP2002511130A (en) | Free piston internal combustion engine | |
| CN107288701B (en) | Two-stroke compression release type auxiliary braking device and method for engine | |
| CN110359976B (en) | Energy-saving engine oil control valve with circulation regulation function | |
| CN106285966A (en) | For the engine braking methods that vehicle is slow | |
| CN105736086A (en) | Combustion braking and pressure reduction braking combined engine braking method and pressure reduction device | |
| CN211144678U (en) | Fuel oil cut-off control cylinder of high-power diesel engine | |
| CN102678282A (en) | Regulating system with air intake and discharge combined mechanism | |
| WO2008088416A1 (en) | Internal combustion engine and operating method therefor | |
| CN110617169A (en) | Fuel oil cut-off control cylinder of high-power diesel engine | |
| CN103032158B (en) | Circular cylinder engine | |
| CN211144647U (en) | Fuel oil control device of high-power diesel engine | |
| CN102678272A (en) | Regulating device for air intake and discharge flow of supercharger | |
| CN216588737U (en) | Cylinder structure, engine and power device | |
| CN114622999B (en) | Intake shutoff valve for engine | |
| CN110486148A (en) | A kind of after-burner high load capacity response engine | |
| CN110594029B (en) | Fuel control device and method for high-power diesel engine | |
| CN209838531U (en) | Energy-saving compression-ignition engine with continuously variable compression ratio and flexible operation | |
| CN107218127B (en) | Four-cylinder self-supercharging engine | |
| US20040221820A1 (en) | Variable engine cycle engine | |
| US20210164389A1 (en) | Method for operating an internal combustion engine | |
| CN201176894Y (en) | Automobile variable doubly-linked hybrid engine | |
| CN107575327A (en) | A kind of electric control single pump engine and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |