CN216617677U - Marine medium-high speed oil gas dual-electric control dual-fuel engine - Google Patents
Marine medium-high speed oil gas dual-electric control dual-fuel engine Download PDFInfo
- Publication number
- CN216617677U CN216617677U CN202121044317.7U CN202121044317U CN216617677U CN 216617677 U CN216617677 U CN 216617677U CN 202121044317 U CN202121044317 U CN 202121044317U CN 216617677 U CN216617677 U CN 216617677U
- Authority
- CN
- China
- Prior art keywords
- valve
- interlocking
- diesel
- engine
- electric control
- 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)
Abstract
The utility model relates to a medium-high speed oil-gas dual-electric-control dual-fuel engine for a ship. A plurality of electric control monoblock pumps connected in parallel are arranged between the diesel tank and a diesel feeding pipeline of the engine, the inlet of each electric control monoblock pump is communicated with the diesel tank, the outlet of each electric control monoblock pump is communicated with the diesel feeding pipeline of the engine, and the electric control monoblock pumps can independently control diesel entering each cylinder body. An interlocking valve rear valve, an interlocking vent valve and an interlocking valve front valve are arranged between the gas rail and the LNG storage tank, the interlocking vent valve is communicated with the outside of the ship, and a control loop of the interlocking valve rear valve, the interlocking vent valve and the interlocking valve front valve is communicated with a ship security line. The control flexibility is high, the diesel oil and natural gas dual-fuel independent control and independent injection can be realized, and the response speed is high.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to a marine medium-high speed oil-gas dual-electric control dual-fuel engine.
Background
At present, a mechanical pump is generally configured on a marine dual-fuel engine, the fuel injection fuel supply advance angle of the marine dual-fuel engine is determined through mechanical connection of a coupling, and the fuel supply advance angle of the marine dual-fuel engine in different working modes and under different loads is a fixed value. The rotating speed of the engine is adjusted by a speed regulator matched with a mechanical pump, and the oil quantity adjusting precision is poor, so that the rotating speed fluctuation of the engine under medium and low loads is large, and the working load uniformity of each cylinder is poor. The mechanical pump cannot be detected through the electric control system, and if the mechanical pump works abnormally, the dual-fuel mode cannot be automatically switched to the pure diesel mode.
Disclosure of Invention
In order to solve the technical problems in the background technology, the utility model provides a medium-high speed oil-gas dual electric control dual-fuel engine for a ship, which has high control flexibility, can realize independent control and independent injection of dual fuels of diesel oil and natural gas, and has higher response speed.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a diesel oil feeding pipeline and a natural gas feeding pipeline are arranged on the engine, the diesel oil feeding pipeline is communicated with a diesel oil tank through a fuel oil delivery pump, and the natural gas feeding pipeline is communicated with an LNG storage tank through a gas rail and a gas electromagnetic valve.
Furthermore, a plurality of electric control monoblock pumps which are connected in parallel are arranged between the diesel tank and a diesel feeding pipeline of the engine, the inlet of each electric control monoblock pump is communicated with the diesel tank, the outlet of each electric control monoblock pump is communicated with the diesel feeding pipeline of the engine, and the electric control monoblock pumps can independently control diesel entering each cylinder body.
Furthermore, an interlocking valve rear valve, an interlocking vent valve and an interlocking valve front valve are arranged between the gas rail and the LNG storage tank, the interlocking vent valve is communicated to the outside of the ship, and a control loop of the interlocking valve rear valve, the interlocking vent valve and the interlocking valve front valve is communicated with a whole ship security line.
Furthermore, the interlocking valve rear valve and the interlocking valve front valve are of a fault closing type, and the interlocking vent valve is of a fault opening type.
Furthermore, a fuel coarse filter and a fuel fine filter are arranged between the diesel tank and a diesel feeding pipeline of the engine.
Furthermore, a filter is arranged between the LNG storage tank and a natural gas feeding pipeline of the engine.
Furthermore, a standby electric pump is arranged between the diesel tank and a diesel feeding pipeline of the engine.
Furthermore, a buffer is arranged between the electric control monoblock pump and the diesel oil tank.
Furthermore, an outlet of the LNG storage tank is provided with a vaporization pressure reducing device, a manual cut-off valve and a manual main valve.
Further, a pressure gauge and a pressure regulating valve are arranged between the LNG storage tank and the gas rail.
The utility model has the beneficial effects that:
the control flexibility is high, the independent control and independent injection of diesel oil and natural gas can be realized, and the response speed is high; the combustion efficiency of the internal combustion engine is improved, the emission of the internal combustion engine is optimized, and the natural gas is widely used on medium and heavy-duty automobiles.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of the structure of the present invention.
In the figure:
101. the system comprises a diesel tank, 102, a fuel coarse filter, 103, a standby electric pump, 104, a gas electromagnetic valve, 105, a buffer, 106, a fuel fine filter, 107, a fuel delivery pump, 108, an electronic control unit pump, 109, an engine, 110, a gas rail, 111, an interlocking valve rear valve, 112, an interlocking vent valve, 113, a pressure gauge, 114, a pressure regulating valve, 115, a filter, 116, an interlocking valve front valve, 117, a manual cut-off valve, 118, a vaporization pressure reducing device, 119, a manual main valve and 120 an LNG storage tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A diesel oil feeding pipeline and a natural gas feeding pipeline are arranged on an engine 109 of the marine medium-high speed oil-gas dual-electric-control dual-fuel engine, the diesel oil feeding pipeline is communicated with a diesel oil tank 101 through a fuel oil delivery pump 107, and the natural gas feeding pipeline is communicated with an LNG storage tank 120 through a gas rail 110 and a gas electromagnetic valve 104.
In order to realize accurate control of fuel injection, a plurality of electric control monoblock pumps 108 which are connected in parallel are arranged between a diesel oil tank 101 and a diesel oil feeding pipeline of an engine 109, the inlets of the electric control monoblock pumps 108 are communicated with the diesel oil tank 101, the outlets of the electric control monoblock pumps 108 are communicated with the diesel oil feeding pipeline of the engine 109, and the electric control monoblock pumps 108 can independently control diesel oil entering each cylinder body. A buffer 105 is also arranged between the electric control monoblock pump 108 and the diesel tank 101. And because of the electric control, compared with the mode that the fuel injection advance angle of the traditional mechanical pump is determined through mechanical connection of a coupling, the control is more accurate.
In order to improve safety and stability, an interlocking valve rear valve 111, an interlocking vent valve 112 and an interlocking valve front valve 116 are arranged between the gas rail 110 and the LNG storage tank 120, the interlocking vent valve 112 is opened to the outside of the ship, and a control loop of the interlocking valve rear valve 111, the interlocking vent valve 112 and the interlocking valve front valve 116 is communicated with a ship security line. The interlock valve rear valve 111 and the interlock valve front valve 116 are of a fail-closed type, and the interlock vent valve 112 is of a fail-open type. When a fault occurs, the interlocking valve rear valve 111 and the interlocking valve front valve 116 are closed, the interlocking vent valve 112 is opened, and the natural gas in the pipeline is discharged to the outside of the ship body through the interlocking vent valve 112.
In order to filter the diesel fuel entering the engine and prevent impurities in the diesel fuel from affecting the combustion efficiency, a fuel coarse filter 102 and a fuel fine filter 106 are arranged between the diesel fuel tank 101 and a diesel fuel feeding pipeline of the engine 109. And a filter 115 is installed between the LNG tank 120 and the natural gas feed line of the engine 109 in order to filter the natural gas.
In order to increase the reliability of the whole engine, a standby electric pump 103 is arranged between the diesel tank 101 and a diesel feeding pipeline of the engine 109, and when the fuel delivery pump 107 fails and cannot work synchronously along with the engine, the standby electric pump 103 is started, so that the engine can continuously and reliably run.
To enable manual switching operation, the outlet of the LNG storage tank 120 is equipped with a vaporizing pressure reducing device 118, a manual cut-off valve 117, and a manual main valve 119. In order to be able to regulate and monitor the natural gas pressure, a pressure gauge 113 and a pressure regulating valve 114 are provided between the LNG tank 120 and the gas rail 110.
The specific working principle is as follows:
the oil-gas dual-electric-control dual-fuel engine control system achieves the purpose of speed regulation of the engine in different working modes by adjusting the fuel electric control pump, automatically calculates parameters such as required injection oil quantity and pulse width according to an electric control pump hardware parameter ECU, and corrects the oil quantity based on the rotating speed and the exhaust temperature difference, thereby achieving the function of regulating the rotating speed of the engine. According to the rotating speed of the current working state of the engine and the data feedback of the supercharging pressure sensor, the oil supply advance angles of the engine under different working modes and different loads are automatically matched with the Map. Each cylinder of the fuel oil electric control pump system is provided with an oil injection electromagnetic valve, the working state of the electromagnetic valve can be detected through the electric control system, if abnormity occurs, the control system can be automatically switched into a pure diesel mode from a dual-fuel mode, and the running safety of an engine is guaranteed.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. A medium-high speed oil-gas dual-electric control dual-fuel engine for a ship is characterized in that,
the engine (109) is provided with a diesel oil feeding pipeline and a natural gas feeding pipeline, the diesel oil feeding pipeline is communicated with a diesel oil tank (101) through a fuel oil delivery pump (107), and the natural gas feeding pipeline is communicated with an LNG storage tank (120) through a gas rail (110) and a gas electromagnetic valve (104);
a plurality of electric control monoblock pumps (108) connected in parallel are arranged between the diesel tank (101) and a diesel oil feeding pipeline of the engine (109), the inlets of the electric control monoblock pumps (108) are communicated with the diesel tank (101), the outlets of the electric control monoblock pumps (108) are communicated with the diesel oil feeding pipeline of the engine (109), and the electric control monoblock pumps (108) can independently control diesel oil entering each cylinder body;
a fuel coarse filter (102) and a fuel fine filter (106) are arranged between the diesel tank (101) and a diesel feeding pipeline of the engine (109);
a filter (115) is arranged between the LNG storage tank (120) and a natural gas feeding pipeline of the engine (109);
a standby electric pump (103) is arranged between the diesel tank (101) and a diesel feeding pipeline of the engine (109);
an outlet of the LNG storage tank (120) is provided with a vaporization pressure reducing device (118), a manual cut-off valve (117) and a manual main valve (119);
and a pressure gauge (113) and a pressure regulating valve (114) are arranged between the LNG storage tank (120) and the gas rail (110).
2. The marine medium-high speed oil-gas dual electric control dual fuel engine according to claim 1,
an interlocking valve rear valve (111), an interlocking vent valve (112) and an interlocking valve front valve (116) are arranged between the gas rail (110) and the LNG storage tank (120), the interlocking vent valve (112) is communicated to the outside of the ship, and control loops of the interlocking valve rear valve (111), the interlocking vent valve (112) and the interlocking valve front valve (116) are communicated with a whole ship security line.
3. The marine medium-high speed oil-gas dual electric control dual fuel engine according to claim 2,
the interlocking valve rear valve (111) and the interlocking valve front valve (116) are of a fault closing type, and the interlocking vent valve (112) is of a fault opening type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121044317.7U CN216617677U (en) | 2021-05-14 | 2021-05-14 | Marine medium-high speed oil gas dual-electric control dual-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121044317.7U CN216617677U (en) | 2021-05-14 | 2021-05-14 | Marine medium-high speed oil gas dual-electric control dual-fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216617677U true CN216617677U (en) | 2022-05-27 |
Family
ID=81682008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121044317.7U Active CN216617677U (en) | 2021-05-14 | 2021-05-14 | Marine medium-high speed oil gas dual-electric control dual-fuel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216617677U (en) |
-
2021
- 2021-05-14 CN CN202121044317.7U patent/CN216617677U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240084747A1 (en) | Systems, methods, and apparatus for operation of dual fuel engines | |
| US7225763B2 (en) | Fumigation system for a diesel engine | |
| EP2410151B1 (en) | Engine exhaust energy recovery device | |
| US20110155102A1 (en) | Direct injection bi-fuel system for combustion engines | |
| US6253735B1 (en) | Fuel feeding device | |
| CN105526021B (en) | Different fueling between donor and non-donor cylinders in an engine | |
| EP2312140B1 (en) | A gas fuel admission system for a gas fired engine | |
| US7793622B2 (en) | Method of operating a gas engine | |
| US20150020771A1 (en) | Fuel mixture system and assembly | |
| US9228536B2 (en) | Load shedding techniques for dual fuel engines | |
| US20120310509A1 (en) | Dual fuel engine system | |
| CN113202638A (en) | Near-zero emission liquid ammonia-diesel dual-fuel supply system | |
| US9488114B2 (en) | Control strategy for dual gaseous and liquid fuel internal combustion engine | |
| CN113217206A (en) | Marine medium-high speed oil-gas double-electric control dual-fuel engine | |
| US10677175B2 (en) | Ventilation controls for dual-fuel engines | |
| EP2350449B1 (en) | A fluid accumulator arrangement for an internal combustion engine | |
| WO2024088008A1 (en) | Dual-fuel coordinated injection system and ship | |
| CN216617677U (en) | Marine medium-high speed oil gas dual-electric control dual-fuel engine | |
| CN216008687U (en) | Marine medium-high speed oil-gas double-electric control dual-fuel engine | |
| US20180149096A1 (en) | Hybrid fuel system | |
| CN114542331A (en) | High-pressure natural gas supply device, dual-fuel injection system and vehicle control system | |
| CN211343148U (en) | Liquid dual-fuel medium-speed diesel engine system | |
| EP3510271B1 (en) | A fuel system for feeding gas fuel to an internal combustion piston engine and a method of operating an internal combustion piston engine | |
| US11933240B2 (en) | NOx mitigation strategy in methanol internal combustion engine | |
| CN212130636U (en) | Fuel supply system of gas fuel engine and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |