CN211144647U - Fuel oil control device of high-power diesel engine - Google Patents
Fuel oil control device of high-power diesel engine Download PDFInfo
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- CN211144647U CN211144647U CN201921788016.8U CN201921788016U CN211144647U CN 211144647 U CN211144647 U CN 211144647U CN 201921788016 U CN201921788016 U CN 201921788016U CN 211144647 U CN211144647 U CN 211144647U
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Abstract
The utility model belongs to the technical field of diesel engine fuel control, adjust, a high-power diesel engine fuel controlling means is related to, including the connector body and the fuel cut-off control cylinder of seting up three interface, air cleaner is connected respectively to the three interface of connector body, fuel control air pipe and fuel cut-off air pipe, the one end that the connector body was kept away from to fuel control air pipe and fuel cut-off air pipe all is connected with the solenoid valve, all be connected with on the solenoid valve and cut-off the intake pipe that control cylinder air inlet communicates with the fuel, this controlling means installs on the diesel engine, can adjust the injection pump fuel volume, the fuel volume of control entering combustion chamber, realize the diesel engine low-speed limit oil, the.
Description
Technical Field
The utility model belongs to the technical field of diesel engine fuel control, regulation, a high-power diesel engine fuel controlling means 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.
The existing low-speed oil limiting device of the diesel engine is shown in figure 1, wherein the serial number I is an air pipe, the serial number II is a pneumatic piston, the serial number III is a baffle plate assembly, and the serial number IV is an installation plate. The mounting plate IV is used for fixing the low-speed oil limiting device on a diesel engine, the oil limiting device guides pressurized air after cooling all the way through an air pipe I, a pneumatic piston II is pushed by air pressure, the pneumatic piston II pushes a baffle plate component III, and a baffle plate of the baffle plate component III controls an accelerator pull rod at a small oil quantity position, so that low-speed oil limiting is realized. The disadvantage is that the introduced booster air pressure has limited action and slow action, and contains moisture, which easily causes the rusting and the clamping of the pneumatic piston.
As shown in fig. 2, a conventional emergency stop device has an air filter designated by reference numeral v, an electromagnetic valve designated by reference numeral vi, an air tube designated by reference numeral vii, a stop device designated by reference numeral viii, and a latch assembly designated by reference numeral ix. External control air waits to solenoid valve VI through air cleaner V, and according to the position of diesel engine bent axle, rotational speed signal, solenoid valve VI is opened and is got the electrical signal and ventilate, and pressurized air promotes bolt subassembly IX action through air hose VII to drive parking equipment VIII, parking equipment VIII's support drives the throttle action, realizes controlling the throttle stroke to the zero-bit, thereby realizes emergency stop. The disadvantages are that the structure is complex, the number of parts is large, the cost is high, and the manual reset is needed after the vehicle is stopped.
The existing low-speed oil limiting device and the emergency stop device can realize related functions, but the appearance structure of the existing low-speed oil limiting device and the existing emergency stop device is complex, the manufacturing cost is high, and the function is single.
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 oil controlling means, this controlling means installs on the diesel engine, can adjust injection pump fuel oil quantity, and the control gets into the fuel oil quantity of combustion chamber, realizes diesel engine low speed oil limit, emergency stop function.
In order to achieve the purpose, the utility model provides a high-power diesel engine fuel controlling means for open the diesel engine and stop the section and carry out fuel control, including the connector body and the fuel cut-off control cylinder of seting up three interface, the three interface difference fixed connection air cleaner of connector body, fuel control air pipe and fuel cut-off air pipe, the one end that the connector body was kept away from to fuel control air pipe and fuel cut-off air pipe all is connected with the solenoid valve, all is connected with the intake pipe that feeds through with fuel cut-off control cylinder air inlet on the solenoid valve.
Further, the fuel cut-off control cylinder comprises a cylinder body, a front end cover and a rear end cover which are fixedly installed at the front end and the rear end of the cylinder body respectively, a fuel 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 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 communicated with an air inlet pipe on a fuel control air pipe electromagnetic valve is formed in the cylinder body at the front end of the control piston, a fuel cut-off air inlet communicated with an air inlet pipe on the fuel cut-off air pipe electromagnetic valve is formed in the cylinder body at the rear end of the fuel cut-off piston, a closed space formed by the front end cover.
Furthermore, the electromagnetic valve connected to the fuel control air pipe is a fuel control electromagnetic valve, the connecting pipe between the fuel control electromagnetic valve and the fuel control air inlet is a first connecting pipe, the electromagnetic valve connected to the fuel cut-off air pipe is a fuel cut-off electromagnetic valve, and the connecting pipe between the fuel cut-off air pipe electromagnetic valve and the fuel cut-off air inlet is a second connecting pipe.
Further, still including being convenient for fix the mounting panel on the diesel engine with fuel control device, air cleaner, fuel control air pipe and fuel cut off the air hose and all fix in mounting panel one side.
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.
Further, the fuel control air pipe and the fuel cut-off air pipe are both U-shaped.
A control method of a fuel oil control device of a high-power diesel engine comprises the following steps:
A. normally starting the diesel engine, and respectively enabling the pressurized air to enter a fuel control air pipe and a fuel cut-off air pipe in two paths through an air filter;
B. determining a fuel control signal of the electromagnetic valve according to the position of a crankshaft of the diesel engine, a rotating speed signal and air pressure, and when the rotating speed of the diesel engine is detected to be lower than the minimum rotating speed of the diesel engine, the air pressure P is less than a set value P0When the fuel injection control system is used (according to different requirements, the pressure is adjustable), the fuel control electromagnetic valve on the fuel control air pipe is opened to obtain an electric signal for ventilation, the fuel control electromagnetic valve enters a fuel cut-off control cylinder, the fuel injection quantity of a part of load is limited, and the control of excessive fuel injection is realized; when the rotating speed of the diesel engine is higher than the maximum rotating speed of the diesel engine, the air pressure P is larger than the set value P0(according to different requirements, the pressure is adjustable), the fuel oil cut-off electromagnetic valve is electrified to be in signal ventilation, enters the fuel oil cut-off control cylinder, stops supplying fuel, and achieves the parking function; when the rotating speed of the diesel engine is between the minimum rotating speed and the maximum rotating speed of the diesel engine, the fuel oil is cut off, and the fuel oil control electromagnetic valve is normally closed.
And furthermore, after the fuel control electromagnetic valve on the fuel control air pipe is opened to supply an electric signal for ventilation in the step B, the control piston pushes the fuel cut-off piston to move to reduce the accelerator of the fuel injection pump, so that the fuel limit function is realized.
And further, in the step B, the fuel oil cutting solenoid valve is electrified to conduct signals, and the pressurized air pushes the fuel oil cutting piston to pull the fuel injection pump to a parking position, so that the fuel oil cutting action is realized.
The beneficial effects of the utility model reside in that:
the control method of the fuel oil cut-off control device adopts the adjustable pressurized air to automatically adjust the fuel injection quantity according to the working condition of the diesel engine, has the fuel oil control function and the fuel oil cut-off function, and can realize the functions of low-speed fuel oil limit and emergency stop of the diesel engine. 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. When the diesel engine needs to stop in an emergency, the diesel engine can quickly respond to and execute an oil stopping action; meanwhile, the appearance is simple and attractive, the structure is compact, the processing difficulty is low, and the manufacturing cost is low.
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 a schematic structural diagram of a low-speed oil-limiting device of a conventional diesel engine;
FIG. 2 is a schematic structural diagram of an emergency stop device of a conventional diesel engine;
FIG. 3 is a front view of the fuel control device of the high-power diesel engine of the present invention;
FIG. 4 is a side view of the fuel control device of the high-power diesel engine of the present invention;
FIG. 5 is a schematic structural diagram of a fuel cut-off control cylinder in the fuel control device of the high-power diesel engine of the present invention;
fig. 6 is a fuel control flow chart of the high-power diesel engine of the utility model.
Reference numerals: the fuel cut-off air filter comprises an air filter 1, a connector body 2, a fuel control air pipe 3, a fuel control electromagnetic valve 4, a fuel cut-off electromagnetic valve 5, a fuel cut-off air pipe 6, a first air inlet pipe 7, a second air inlet pipe 8, a fuel cut-off control cylinder 9, a mounting plate 10, a fuel cut-off piston 11, a control piston 12, a rear end cover 13, a front end cover 14, a cylinder body 15, a fuel control air inlet 16 and a fuel cut-off air inlet 17.
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 this patent is a reciprocating internal combustion engine that is fired by compression. The fuel cut-off control device is a device integrating a fuel control function and a fuel cut-off 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 control device for the high-power diesel engine shown in the figures 3-5 is used for controlling fuel of a start-stop section of the diesel engine and comprises a connector body 2 with three interfaces and a fuel cut-off control cylinder 9, wherein the three interfaces of the connector body 2 are respectively and fixedly connected with an air filter 1, a fuel control air pipe 3 and a fuel cut-off air pipe 6, and the fuel control air pipe 3 and the fuel cut-off air pipe 6 are in U shapes with opposite air inlets. The end, far away from the connector body 2, of each of the fuel control air pipe 3 and the fuel cut-off air pipe 6 is connected with an electromagnetic valve, the electromagnetic valve connected to the fuel control air pipe 3 is a fuel control electromagnetic valve 4, the connecting pipe between the fuel control electromagnetic valve 4 and the fuel control air inlet 16 is a first connecting pipe, the electromagnetic valve connected to the fuel cut-off air pipe 6 is a fuel cut-off electromagnetic valve 5, and the connecting pipe between the fuel cut-off air pipe 6 and the fuel cut-off air inlet 17 is a second connecting pipe.
The fuel cut-off control cylinder 9 comprises a cylinder body 15, a front end cover 14 and a rear end cover 13 which are fixedly installed at the front end and the rear end of the cylinder body 15 respectively, a fuel cut-off piston 11 with the rear end tangent to the inner wall of the cylinder body 15 penetrates through the front end cover 14, a control piston 12 for pushing the fuel cut-off piston 11 to move along the length direction of the cylinder body 15 is sleeved outside the fuel cut-off piston 11, a fuel control air inlet 16 communicated with a first air inlet pipe 7 on an electromagnetic valve of a fuel control air pipe 3 is formed in the cylinder body 15 at the front end of the control piston 12, a fuel cut-off air inlet 17 communicated with a second air inlet pipe 8 on the electromagnetic valve of the fuel cut-off air pipe 6 is formed in the cylinder body 15 at the rear end of the fuel cut-off piston 11, a closed space formed by the front end cover 14, the. One end of the fuel cut-off piston 11, which is far away from the front end cover 14, is fixedly provided with a connecting nut, and the connecting nut is hinged with a pull ring connected with an accelerator of the fuel injection pump.
The diesel engine fuel cut-off device is characterized by further comprising a mounting plate 10 convenient for fixing the fuel control device on the diesel engine, and the air filter 1, the fuel control air pipe 3 and the fuel cut-off air pipe 6 are all fixed on one side of the mounting plate 10.
As shown in fig. 6, a control method of a fuel control device of a high-power diesel engine includes the following steps:
A. normally starting the diesel engine, and respectively enabling the pressurized air to enter a fuel control air pipe 3 and a fuel cut-off air pipe 6 in two paths through an air filter 1;
B. determining a fuel control signal of the electromagnetic valve according to the position of a crankshaft of the diesel engine, a rotating speed signal and air pressure, and when the rotating speed of the diesel engine is detected to be lower than the minimum rotating speed of the diesel engine, the air pressure P is less than a set value P0When the fuel oil control system is used (pressure is adjustable according to different requirements), the fuel oil control electromagnetic valve 4 on the fuel oil control air pipe 3 is opened to obtain an electric signal for ventilation, pressurized air enters the fuel oil cut-off control cylinder 9, the pressurized air pushes the control piston 12 inside the fuel oil cut-off control cylinder 9 so as to push the internal fuel cut-off piston 11, and finally the pull ring connected with the fuel cut-off piston 11 drives the accelerator of the fuel injection pump to a small oil quantity position to limit partial fuel injection quantity, so that the low-speed fuel limit function is realized; when the rotating speed of the diesel engine is higher than the maximum rotating speed of the diesel engine, the air pressure P is larger than the set value P0When the vehicle is stopped (according to different requirements, the pressure is adjustable), the fuel oil cutting electromagnetic valve 5 is electrified to conduct air, enters the fuel oil cutting control cylinder 9, the pressurized air pushes the fuel oil cutting piston 11 in the fuel oil cutting control cylinder 9, the fuel oil cutting piston 11 drives the pull ring to act, and finally the travel of the accelerator is controlled to the zero position through the pull ring, so that the parking function is realized; when the rotating speed of the diesel engine is between the minimum rotating speed and the maximum rotating speed of the diesel engine, the fuel oil is cut off, and the fuel oil control electromagnetic valve 4 is normally closed.
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 (6)
1. The utility model provides a high-power diesel engine fuel controlling means for open the diesel engine and stop the section and carry out fuel control, a serial communication port, including the connector body and the fuel cut-off control cylinder of seting up three interface, the three interface of connector body is fixed connection air cleaner, fuel control air pipe and fuel cut-off air pipe respectively, the one end that the connector body was kept away from to fuel control air pipe and fuel cut-off air pipe all is connected with the solenoid valve, all is connected with on the solenoid valve and cuts off the intake pipe that controls the cylinder air inlet intercommunication with the fuel.
2. The fuel oil control device of the high-power diesel engine according to claim 1, characterized in that the fuel oil cut-off control cylinder comprises a cylinder body, a front end cover and a rear end cover which are fixedly installed at the front end and the rear end of the cylinder body respectively, 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 manner, 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 oil control air inlet communicated with an air inlet pipe on a fuel oil control air pipe electromagnetic valve is arranged on the cylinder body at the front end of the control piston, a fuel oil cut-off air inlet communicated with an air inlet pipe on the fuel oil cut-off air pipe electromagnetic valve is arranged on the cylinder body at the rear end of the fuel cut-off.
3. The fuel control apparatus for a high power diesel engine according to claim 2, wherein the solenoid valve connected to the fuel control air pipe is a fuel control solenoid valve, and the solenoid valve connected to the fuel cutoff air pipe is a fuel cutoff solenoid valve.
4. The high power diesel fuel control device of claim 3, further comprising a mounting plate for facilitating attachment of the fuel control device to the diesel engine, the air filter, the fuel control air line and the fuel cutoff air line being attached to one side of the mounting plate.
5. The fuel control device for the high-power diesel engine according to claim 4, characterized in that a connecting nut is fixedly installed at one end of the fuel cut-off piston, which is 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.
6. The high power diesel fuel control device of claim 5 wherein said fuel control air duct and fuel cutoff air duct are U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921788016.8U CN211144647U (en) | 2019-10-23 | 2019-10-23 | Fuel oil control device of high-power diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921788016.8U CN211144647U (en) | 2019-10-23 | 2019-10-23 | Fuel oil control device of high-power diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211144647U true CN211144647U (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921788016.8U Withdrawn - After Issue CN211144647U (en) | 2019-10-23 | 2019-10-23 | Fuel oil control device of high-power diesel engine |
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| CN (1) | CN211144647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594029A (en) * | 2019-10-23 | 2019-12-20 | 重庆潍柴发动机有限公司 | Fuel oil control device of high-power diesel engine and control method thereof |
-
2019
- 2019-10-23 CN CN201921788016.8U patent/CN211144647U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594029A (en) * | 2019-10-23 | 2019-12-20 | 重庆潍柴发动机有限公司 | Fuel oil control device of high-power diesel engine and control method thereof |
| CN110594029B (en) * | 2019-10-23 | 2023-08-15 | 重庆潍柴发动机有限公司 | Fuel control device and method for high-power diesel engine |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200731 Effective date of abandoning: 20230815 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200731 Effective date of abandoning: 20230815 |