CN207420732U - A kind of double fuel engine unit control system - Google Patents
A kind of double fuel engine unit control system Download PDFInfo
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- CN207420732U CN207420732U CN201721231547.8U CN201721231547U CN207420732U CN 207420732 U CN207420732 U CN 207420732U CN 201721231547 U CN201721231547 U CN 201721231547U CN 207420732 U CN207420732 U CN 207420732U
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Abstract
The utility model is related to a kind of double fuel engine unit control systems, the control system includes operating mode controller, is connected respectively with cylinder sleeve cooling-water temperature sensor, air inlet pressure sensor, electric butterfly valve, electric T-shaped valve and control rack /V solenoid valve in the signal output output terminal of the operating mode controller；The use of liquefied gas and diesel dual-fuel can be effectively realized using the utility model, substitute gas part diesel oil is made to make internal combustion engine steady operation, it can reduce discharge, improve economic performance, have good operability particularly to the incomplete area of natural gas supply.It can guarantee that internal combustion engine has preferable power performance and economic performance using the utility model control method, be basically unchanged internal combustion engine performance, Operation and maintenance are simple, good reliability.
Description
Technical field
The utility model is related to field more particularly to a kind of double fuel engine unit control systems.
Background technology
Worsening instantly in petroleum resources worsening shortages, environment, energy-saving and emission-reduction are very urgent.The soot row of diesel engine
It puts very seriously, it is very big to urban environment and human health risk.If cost-effective measure is not used to solve, diesel engine
Using will be limited be subject to increasingly strict emission regulation.
Utility model content
The applicant is directed to above-mentioned existing issue, has carried out Improvement, provides a kind of double fuel engine unit allocation system
System, effectively realizes the conversion and use of double fuel between liquefied natural gas and diesel oil, and liquefied natural gas is made to substitute part bavin
Oil simultaneously realizes the work that internal combustion engine is stablized, and reduces discharge, improves economic performance.
Technical solution is as follows used by the utility model：
A kind of control system of double fuel engine unit, including operating mode controller, in the operating mode controller
Signal output output terminal respectively with cylinder sleeve cooling-water temperature sensor, air inlet pressure sensor, electric butterfly valve, electric T-shaped valve and fuel feeding
Rack /V solenoid valve connects；
- operating mode controller：For the control core of generating set；
- cylinder sleeve temperature sensor：It is installed on internal combustion engine cylinder jacket water-flow circuit, for detecting in cylinder sleeve water-flow circuit
The temperature of portion's coolant；
- air inlet pressure sensor：It is installed on natural gas air inlet pipeline, for detecting natural gas admission pressure after gasification；
- electric butterfly valve：On air inlet pipeline, for adjusting air inflow；
- electric T-shaped valve：On the cylinder sleeve water pipe of internal combustion engine cylinder jacket water radiator, for being provided to heating under reduced pressure device
Heat source；
- control rack /V solenoid valve：It is installed in injection pump, for changing the position of oil spout control rack.
Its further technical solution is：
The operating mode controller include main control unit, gasification heating unit, electric three passes valve control unit, VCU, into controlled atmosphere
Save unit, air inlet electric butterfly valve control unit and control rack /V control unit of electromagnetic valve；
Main control unit, for receiving user job mode switching signal and judging unit operating mode；
Gasify heating unit, for the collecting temperature value for receiving cylinder sleeve water temperature sensor and by collecting temperature value with setting
Constant temperature angle value is compared；
Electric three passes valve control unit, VCU, for electric T-shaped valve to be controlled to open and close；
For receiving the acquisition pressure value of air inlet pressure sensor, acquisition pressure value and setting are pressed for air inlet adjustment unit
Force value is compared.
Air inlet electric butterfly valve control unit, for air inlet electric butterfly valve to be controlled to open and close；
Control rack /V control unit of electromagnetic valve, for control rack /V solenoid valve to be controlled to open and close；
If double fuel operation is switched to double fuel operating mode in the unit operating mode, if not double fuel operation switching
For pure diesel oil operating mode.
Description of the drawings
Fig. 1 is structure diagram of the utility model in double fuel engine unit.
Fig. 2 is the work flow diagram of the utility model.
Fig. 3 is the workflow schematic diagram of operating mode controller in the utility model.
Fig. 4 is the structure diagram of injection pump in double fuel engine unit.
Wherein：1st, liquified natural gas tank；2nd, cryogenic hose；3rd, flowmeter；4th, electric butterfly valve；5th, heating under reduced pressure device；6th, subtract
Press tube, heater inlet；7th, electric T-shaped valve；8th, heating under reduced pressure device outlet pipe；9th, the first hose；10th, compound regulating valve；11st,
Two hoses；12nd, compound regulating valve pressure-sensitive membrane low pressure side chamber connection flexible pipe；13rd, compound regulating valve pressure-sensitive membrane high pressure side chamber connects
Connect hose；14th, internal combustion engine intake filter；15th, mixer；16th, air-admission pressure-booster；17th, air-admission pressure-booster air outlet pipe；18th, spray
Oil pump；19th, electromagnetic valve for braking；191st, first it is threadedly coupled head；20th, injection pump control rack；201st, the second threaded connector
Portion；21st, control rack /V solenoid valve；22nd, internal combustion engine cylinder jacket water radiator；23rd, internal combustion engine；24th, internal-combustion engine vent-pipe；25、
Silencer；26th, generator；27th, operating mode controller；28th, air inlet pressure sensor；29th, cylinder sleeve cooling-water temperature sensor.
Specific embodiment
Illustrate specific embodiment of the present utility model below.
As shown in Figure 1, a kind of control system of double fuel engine unit includes operating mode controller 27, operating mode control
Device 27 processed is the control core of generating set；Cylinder sleeve water temperature sensing is connected respectively in the signal output part of operating mode controller 27
Device 29, air inlet pressure sensor 28, electric butterfly valve 4, electric T-shaped valve 7 and control rack /V solenoid valve 21.Wherein jacket water
Temperature sensor 29 is installed on internal combustion engine cylinder jacket water-flow circuit, for detecting the temperature of cylinder sleeve water-flow circuit internal coolant
Degree；The cylinder sleeve water-flow circuit include be connected with 22 import of internal combustion engine cylinder jacket water radiator internal combustion engine cylinder jacket water water inlet pipe, with
And the internal combustion engine cylinder jacket water outlet pipe with the outlet of internal combustion engine cylinder jacket water radiator 22 connection, above-mentioned internal combustion engine cylinder jacket water radiator 22
By internal combustion engine cylinder jacket water water inlet pipe and internal combustion engine cylinder jacket water outlet pipe and internal combustion engine 23 and even, electronic three in the utility model
Port valve 7 is mounted in internal combustion engine cylinder jacket water water inlet pipe, which passes through heating under reduced pressure device water inlet pipe 6 and heating under reduced pressure
The import connection of device 5, is also connected with heating under reduced pressure device outlet pipe 8, the heating under reduced pressure device on above-mentioned internal combustion engine cylinder jacket water outlet pipe
The outlet of outlet pipe 8 and heating under reduced pressure device 5.Electric T-shaped valve 7 is used to provide heat source to heating under reduced pressure device 5.Above-mentioned air inlet
Pressure sensor 28 and electric butterfly valve 4 are installed in natural gas air inlet pipe road, and above-mentioned natural gas air inlet pipe road is natural with liquefaction
Gas tank 1 connects, which is cryogenic hose 2, and flowmeter 3 and decompression are also set up on the natural gas air inlet pipe road
For detecting liquefied natural gas admission pressure, electric butterfly valve 4 is used to adjust air inlet for heater 5, wherein air inlet pressure sensor 28
Amount.Above-mentioned control rack /V solenoid valve 21 is installed in injection pump 18, for changing the position of injection pump control rack 20.
As shown in Figure 1, electromagnetic valve for braking 19 and injection pump control rack 20, electromagnetic valve for braking 19 and oil spout are set in above-mentioned injection pump 18
It is disconnected each other between oil pump feed rack 20, is also set up on injection pump control rack 20 and be used to implement diesel engine double fuel state
Control rack /V solenoid valve 21,21 rod of control rack /V solenoid valve are threadedly coupled with 19 rod of electromagnetic valve for braking.
As shown in Figure 1, Figure 2 and Figure 3, above-mentioned operating mode controller 27 includes main control unit, gasification heating unit, electronic
Threeway valve control unit, VCU, air inlet adjustment unit, air inlet electric butterfly valve control unit and control rack /V control unit of electromagnetic valve；
Above-mentioned main control unit opens user job mode switching signal and judges unit operating mode for receiving, while also controls internal combustion engine
23rd, the keying of generator 26.If double fuel operation is switched to double fuel operating mode in unit operating mode, if not double fuel is transported
Row is switched to pure diesel oil operating mode.Gasify heating unit, for receiving the collecting temperature value of cylinder sleeve cooling-water temperature sensor 29 and inciting somebody to action
Collecting temperature value is compared with set temperature value, electric three passes valve control unit, VCU, for electric T-shaped valve to be controlled to open and close；Air inlet
For receiving the acquisition pressure value of air inlet pressure sensor 28, acquisition pressure value and setup pressure value are carried out pair for adjustment unit
Than.Above-mentioned air inlet electric butterfly valve control unit is used to that air inlet electric butterfly valve 4 to be controlled to open and close；Above-mentioned control rack /V solenoid valve control
Unit processed, for controlling the keying of control rack /V solenoid valve 21.
As shown in Figure 1, in order to ensure the normal use of customer charge variation, also set in the structure of double fuel engine unit
Compound regulating valve 10 is put, heating under reduced pressure device 5 connects the input end of compound regulating valve 10, compound regulating valve 10 by the first hose 9
The port of export by the second hose 11 connect mixer 15, internal combustion engine intake filter 14 is also connected on mixer 15, mix
Device 15 is connected by air-admission pressure-booster 16 with one end of air-admission pressure-booster air outlet pipe 17, the other end of air-admission pressure-booster air outlet pipe 17
The air inlet of internal combustion engine 23 is connected, the gas outlet of internal combustion engine 23 connects silencer 25, generator 26 by internal-combustion engine vent-pipe 24
It is connected with internal combustion engine 23 and generator 26 is driven to generate electricity；In also passing through compound regulating valve pressure-sensitive membrane in above-mentioned compound regulating valve 10
Low pressure side chamber connection flexible pipe 12 is connected with the outlet of mixer 15, corrosion regulating valve 10 on also by compound regulating valve pressure-sensitive every
Film high pressure side chamber connection flexible pipe 13 is connected with air-admission pressure-booster air outlet pipe 17.
As shown in Figure 2 and Figure 3, a kind of specific control process of double fuel engine unit comprises the following steps：
The first step：Main control unit receives user job mode switching signal and judges unit operating mode, if unit works
Non- double fuel operation is switched to pure diesel oil operating mode and is then transferred to second step in pattern；If double fuel is run in unit operating mode
It is switched to double fuel operating mode and is then transferred to the 3rd step.
Second step：Start operation and from main control unit respectively to air inlet electric butterfly valve control unit, electronic with diesel fuel
Threeway valve control unit, VCU and control rack /V control unit of electromagnetic valve output signal close the outlet hand of liquified natural gas tank 1
Dynamic valve, air inlet electric butterfly valve control unit output signal close air inlet electric butterfly valve 4；Electric three passes valve control unit, VCU output letter
Number close the heating under reduced pressure device water inlet pipe 6 between electric T-shaped valve 7 and heating under reduced pressure device 5；Control rack /V solenoid valve control
Element output signal processed stops control rack /V solenoid valve 21, and it is internal combustion engine to make unrestricted this of injection pump control rack 20
23 are in straight diesel fuel state.
3rd step：The outlet hand-operated valve of manual unlocking liquified natural gas tank 1 is started with diesel fuel and run, cylinder sleeve water temperature
Sensor 29 detects cylinder sleeve coolant-temperature gage and feedback collection temperature value to the heating unit that gasifies, by gasification heating unit by collecting temperature
Value if collecting temperature value is less than set temperature value, is held compared with set temperature value (60 DEG C) by cylinder sleeve cooling-water temperature sensor 29
Row repeats to detect；If collecting temperature value is higher than set temperature value (60 DEG C), electric three passes are outputed signal to by gasification heating unit
Valve control unit, VCU, air inlet adjustment unit and control rack /V control unit of electromagnetic valve；Electric three passes valve control unit, VCU control electricity
Dynamic heating under reduced pressure device water inlet pipe 6 between triple valve 7 and heating under reduced pressure device 5 is opened, and heating under reduced pressure device 5 is made to have the heat source heats liquefied
Natural gas；Air inlet adjustment element output signal is controlled electronic to air inlet electric butterfly valve control unit by air inlet electric butterfly valve unit
Butterfly valve 4 is opened, and air inlet adjustment unit compared with gathering pressure value, presses setup pressure value if acquisition pressure value is less than setting
Force value, air inlet electric butterfly valve unit 4 opening angle of control electric butterfly valve increases, if acquisition pressure value is higher than setup pressure value, into
4 opening angle of gas electric butterfly valve unit control air inlet electric butterfly valve reduces；The control of control rack /V control unit of electromagnetic valve supplies
Oily rack /V solenoid valve 21 acts, and as Figure 1 and Figure 4, control rack /V solenoid valve 21 is attracted, and makes electromagnetic valve for braking 19
The first threaded connection head 191 be threadedly coupled spacing between head 201 with the second of injection pump control rack 20 and be enlarged to and stop
Vehicle solenoid valve 19 disconnects (parking) position and is reduced to the position of 50% fuel delivery in peak torque operating mode control rack position with it
Corresponding, at this moment internal combustion engine 23 is in diesel oil and liquefied natural gas double fuel state.As shown in Figure 1, when generating set load increases
When big, electric butterfly valve 4 is gradually opened greatly, and the high pressure side chamber of the pressure-sensitive membrane of compound regulating valve 10 and the differential pressure of low pressure side chamber gradually increase
Greatly, compound regulating valve 10 is gradually opened big, and 18 fuel delivery of injection pump is in electromagnetic valve for braking 19, control rack /V electricity in this state
It is gradually increased under the action of magnet valve 21 to standard-sized sheet, when generating set load reduces, electric butterfly valve 4 gradually turns down, compound adjusting
The high pressure side chamber of the pressure-sensitive membrane of valve 10 and the differential pressure of low pressure side chamber are gradually reduced, and compound regulating valve 10 gradually turns down, in the shape
18 fuel delivery of injection pump gradually turns down under the action of electromagnetic valve for braking 19, control rack /V solenoid valve 21 under state makes internal combustion engine
23 are in idling state.
4th step：Main control unit receive user's stopping signal, by electric three passes valve control unit, VCU close electric T-shaped valve 7 with
Heating under reduced pressure device water inlet pipe 6 between heating under reduced pressure device 5 closes air inlet electric butterfly valve 4 by air inlet electric butterfly valve control unit, by
Control rack /V control unit of electromagnetic valve closes control rack /V solenoid valve 21.Injection pump control rack 20 is unrestricted at this time
System, makes internal combustion engine 23 be in straight diesel fuel state, internal combustion engine 23 is shut down, and the outlet that liquified natural gas tank 1 is turned off manually is manual
Valve.
Above description is the explanation to the utility model, is not the restriction to utility model, what the utility model was limited
Scope is referring to claim, and in the case of the basic structure without prejudice to the utility model, the utility model can make any shape
The modification of formula.
Claims (3)
1. a kind of control system of double fuel engine unit, it is characterised in that：Including operating mode controller, in the Working mould
The signal output output terminal of formula controller respectively with cylinder sleeve cooling-water temperature sensor, air inlet pressure sensor, electric butterfly valve, electric three passes
Valve and the connection of control rack /V solenoid valve；
- operating mode controller：For the control core of generating set；
- cylinder sleeve temperature sensor：It is installed on internal combustion engine cylinder jacket water-flow circuit, it is cold inside cylinder sleeve water-flow circuit for detecting
But the temperature of liquid；
- air inlet pressure sensor：It is installed on natural gas air inlet pipeline, for detecting natural gas admission pressure after gasification；
- electric butterfly valve：On air inlet pipeline, for adjusting air inflow；
- electric T-shaped valve：On the cylinder sleeve water pipe of internal combustion engine cylinder jacket water radiator, for providing heat to heating under reduced pressure device
Source；
- control rack /V solenoid valve：It is installed in injection pump, for changing the position of oil spout control rack.
2. a kind of control system of double fuel engine unit as described in claim 1, it is characterised in that：The operating mode control
Device processed includes main control unit, gasification heating unit, electric three passes valve control unit, VCU, air inlet adjustment unit, air inlet electric butterfly valve control
Unit and control rack /V control unit of electromagnetic valve processed；
Main control unit, for receiving user job mode switching signal and judging unit operating mode；
Gasify heating unit, for the collecting temperature value for receiving cylinder sleeve water temperature sensor and collecting temperature value is warm with setting
Angle value is compared；
Electric three passes valve control unit, VCU, for electric T-shaped valve to be controlled to open and close；
Air inlet adjustment unit, for receiving the acquisition pressure value of air inlet pressure sensor, by acquisition pressure value and setup pressure value
It is compared；
Air inlet electric butterfly valve control unit, for air inlet electric butterfly valve to be controlled to open and close；
Control rack /V control unit of electromagnetic valve, for control rack /V solenoid valve to be controlled to open and close.
3. a kind of control system of double fuel engine unit as described in claim 1, it is characterised in that：The unit Working mould
If double fuel operation is switched to double fuel operating mode in formula, if not double fuel operation is switched to pure diesel oil operating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721231547.8U CN207420732U (en) | 2017-09-25 | 2017-09-25 | A kind of double fuel engine unit control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721231547.8U CN207420732U (en) | 2017-09-25 | 2017-09-25 | A kind of double fuel engine unit control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420732U true CN207420732U (en) | 2018-05-29 |
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ID=62313910
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721231547.8U Active CN207420732U (en) | 2017-09-25 | 2017-09-25 | A kind of double fuel engine unit control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448305A (en) * | 2017-09-25 | 2017-12-08 | 百发动力（无锡）有限公司 | A kind of double fuel engine unit control system and its control method |
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2017
- 2017-09-25 CN CN201721231547.8U patent/CN207420732U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448305A (en) * | 2017-09-25 | 2017-12-08 | 百发动力（无锡）有限公司 | A kind of double fuel engine unit control system and its control method |
| CN107448305B (en) * | 2017-09-25 | 2023-05-12 | 百发动力（无锡）有限公司 | Dual-fuel generator set control system and control method thereof |
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