CN107560863A - A kind of dual fuel engine testing stand for performance test peculiar to vessel and method - Google Patents
A kind of dual fuel engine testing stand for performance test peculiar to vessel and method Download PDFInfo
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- CN107560863A CN107560863A CN201710839161.3A CN201710839161A CN107560863A CN 107560863 A CN107560863 A CN 107560863A CN 201710839161 A CN201710839161 A CN 201710839161A CN 107560863 A CN107560863 A CN 107560863A
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses a kind of dual fuel engine testing stand for performance test peculiar to vessel, the input shaft of the power output axis connection hydraulic dynamometer of dual fuel engine peculiar to vessel, the control terminal of dual fuel engine peculiar to vessel is connected with engine controller, engine controller connects embedded controller, embedded controller connects the first signal acquisition module, and the first signal acquisition module includes being arranged at several sensors of dual fuel engine peculiar to vessel；Engine controller connects signal output module by embedded controller.The invention also discloses a kind of dual fuel engine performance test methods peculiar to vessel.Scarcity of the present invention for current dual fuel engine monitoring test platform peculiar to vessel, provide a kind of dual fuel engine testing stand for performance test peculiar to vessel, can be with integrating monitoring double fuel main signal of interest, when monitoring that engine operates under abnormal condition, pre-warning signal can be sent by warning device.
Description
Technical field
The invention belongs to internal-combustion engine engineering technical field, and in particular to a kind of dual fuel engine performance test peculiar to vessel
Stand and method.
Background technology
With the rise of the fossil fuel price such as diesel oil, increasingly increase using ship to move the shipping cost for being, along with day
The strict offshore discharge regulation of benefit so that in recent years marine diesel oil natural gas double fuel engine with its exclusive advantage by more
Carry out more concerns.At present, it is external that certain achievement is had been achieved for dual fuel engine peculiar to vessel research and development, and be used as into
Ripe products application is on ship.And the research in terms of domestic each R＆D institution's dual fuel engine is started late, also locate at present
In the stage of fumbling.Although existing dual fuel engine is in kind in some state-owned scientific research business units, its core technology is all the palm
It is held in overseas enterprise's hand, technology blockage is carried out to the country.Therefore, design and developing vessel dual fuel engine performance test examination
Stand is tested, every state parameter that monitoring analysis dual fuel engine is run under different operating modes, is opened for China's autonomous Design
The dual fuel engine key technology research peculiar to vessel for sending out new architecture is significant.
The content of the invention：
The defects of in order to overcome above-mentioned background technology, the present invention provide a kind of dual fuel engine performance test peculiar to vessel
Stand and method.
In order to solve the above-mentioned technical problem used technical scheme of the invention is：
A kind of dual fuel engine testing stand for performance test peculiar to vessel, it is characterised in that：The work(of dual fuel engine peculiar to vessel
Rate exports the input shaft of axis connection hydraulic dynamometer, and the control terminal of dual fuel engine peculiar to vessel is connected with engine controller, sends out
Motivation controller connects embedded controller, and embedded controller connects the first signal acquisition module, the first signal acquisition module
Several sensors including being arranged at dual fuel engine peculiar to vessel；Engine controller is defeated by embedded controller connection signal
Go out module.
It is preferred that the first signal acquisition module includes the micro-spray system for acquisition vessel dual fuel engine micro-spray system
Signal gathering unit, and the gas burning system signal gathering unit for acquisition vessel dual fuel engine gas burning system.
It is preferred that gas burning system signal gathering unit includes：Set on the gas inlet pipe road before fuel-control assembly
The main combustible pipe road flow sensor put.
It is preferred that micro-spray system signal gathering unit includes：
It is arranged at the pre-filtering fuel pressure transmitter of micro-spray system prefilter inlet pipeline；
It is arranged at the supply pump fuel pressure transmitter of micro-spray system supply pump inlet pipeline；
It is arranged at the main filter import fuel pressure transmitter of main filter inlet pipeline；
It is arranged at the main filter outlet fuel pressure sensor of main filter outlet conduit；
It is arranged at the oil temperature supplying sensor and charge oil pressure sensor of oil feed line；
It is arranged at the return pressure sensor, returning-oil temperature sensor and return pressure sensor of return line；
It is arranged at the oil return of oil injector temperature sensor of oil injector oil return pipeline.
It is preferred that embedded controller is the embedded controllers of CompactRIO.
It is preferred that signal output module includes alarm, printer and display.
Start it is preferred that the signal input part of engine controller connects double fuel peculiar to vessel by secondary signal acquisition module
Machine.
It is preferred that secondary signal acquisition module includes：
Inlet manifold's pressure sensor of dual fuel engine inlet manifold peculiar to vessel is arranged at,
The exhaust main pressure sensor of dual fuel engine exhaust main peculiar to vessel is arranged at,
The base bearing temperature sensor of each base bearing of dual fuel engine peculiar to vessel is arranged at,
The exhaust gas temperature sensor of each cylinder blast pipe of dual fuel engine peculiar to vessel is arranged at,
The air cooling inlet pressure sensor of dual fuel engine air cooler inlet pipeline peculiar to vessel is arranged at,
The turbine outlet pressure sensor that dual fuel engine peculiar to vessel discards turbine outlet pipeline is arranged at,
It is arranged at the pressure regulation temperature sensor and pressure regulation pressure sensing of gas pipeline before dual fuel engine pressure regulator valve peculiar to vessel
Device；
It is arranged at the engine high-temperature water temperature sensor of dual fuel engine high temperature water outlet line peculiar to vessel；
It is arranged at the charge air cooler high temperature water temperature sensor of dual fuel engine charge air cooler high temperature water outlet line peculiar to vessel.
The present invention also provides a kind of experiment side that dual fuel engine performance test peculiar to vessel is carried out using above-mentioned test-bed
Method：
By hydraulic dynamometer to dual fuel engine input load peculiar to vessel,
First signal acquisition module sends the dual fuel engine real-time motion signal peculiar to vessel collected to embedded survey
Device is controlled, the dual fuel engine Real-time Feedback signal peculiar to vessel collected is sent to engine and controlled by secondary signal acquisition module
Device, engine controller send engine Real-time Feedback signal to embedded controller,
Embedded controller by engine real-time motion signal compared with the CRANK PULSES threshold value to prestore, by engine
Real-time Feedback signal is compared with the feedback signal threshold value to prestore, if engine real-time motion signal exceeds CRANK PULSES threshold
Value, or engine Real-time Feedback signal exceed feedback signal threshold value, then pass through output module output alarm signal；
The beneficial effects of the present invention are：The present invention has concentrated the signal acquisition of engine controller simultaneously, and individually sets
The signals such as temperature, pressure, flow in the signal in the acquisition module put, including the first signal acquisition module, and the second letter
Number acquisition module is sent to signals such as the supercharger speed of engine controller, exhaust gas bypass valve opening, air-fuel ratios.To these letters
Number focus on after embedded controller, shown together on human-computer interaction interface, can clearly observe that engine is currently transported
The state parameter of row state all parts；
By the structure of the present invention, before engine will operate, embedded controller can judge engine according to signal
Whether motor-car condition is met, if not satisfied, then would indicate that explanation, which place lacks motor-car condition, avoids and manually goes one by one
Exclude the prerequisite of motor-car；The embedded controller of the present invention has used CompactRIO equipment, is wrapped in CompactRIO equipment
Containing a real-time controller, interface has been reserved for the functions expanding of embedded controller.Avoiding will be in embedded survey in future
When increasing some functions on control device, it is necessary to configure new hardware.
Signal in limits is run off to engine and is configured with alarm, wherein audible-visual annunciator and the report in true ship
Alert device is consistent, when state is run under damage to engine, can in time, clearly give operating personnel's early warning；
, can be with the working condition of simulated engine under different loads by hydraulic dynamometer；Pass through beating for output module
Printing equipment is put, can the embedded controller human-computer interaction interface of printing speed show signal histories change chart, as papery retain
Backup, conveniently browses analysis.
A kind of scarcity of the present invention for current dual fuel engine monitoring test platform peculiar to vessel, there is provided double fuel peculiar to vessel
Engine performance measuring test-bed, with integrating monitoring double fuel main signal of interest engine can monitored non-
When being operated under normal condition, pre-warning signal can be exported by warning device.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the embodiment of the present invention one.
In figure：1- dual fuel engines peculiar to vessel, 2- hydraulic dynamometers, 3- engine controllers, 4- the first signal acquisition moulds
Block, the embedded controllers of 5-, 6- output modules, 6.1- alarms, 6.2- printers, 6.3- displays, the collection of 7- secondary signals
Module.
Embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment one
A kind of testing stand for performance test of dual fuel engine peculiar to vessel 1：The power output shaft of dual fuel engine 1 peculiar to vessel connects
The input shaft of hydraulic dynamometer 2 is connect, the control terminal of dual fuel engine 1 peculiar to vessel is connected with engine controller 3, engine control
Device 3 connects embedded controller 5, and embedded controller 5 connects the first signal acquisition module 4, and the first signal acquisition module 4 includes
It is arranged at several sensors of dual fuel engine 1 peculiar to vessel；Engine controller 3 is defeated by embedded controller 5 connection signal
Go out module 6.
First signal acquisition module 4 includes the micro-spray system signal for the acquisition vessel micro-spray system of dual fuel engine 1
Collecting unit, and the gas burning system signal gathering unit for acquisition vessel with the gas burning system of dual fuel engine 1.
Gas burning system signal gathering unit includes：The main combustion set on the gas inlet pipe road before fuel-control assembly
Feed channel flow sensor.
Micro-spray system signal gathering unit includes：
It is arranged at the pre-filtering fuel pressure transmitter of micro-spray system prefilter inlet pipeline；
It is arranged at the supply pump fuel pressure transmitter of micro-spray system supply pump inlet pipeline；
It is arranged at the main filter import fuel pressure transmitter of main filter inlet pipeline；
It is arranged at the main filter outlet fuel pressure sensor of main filter outlet conduit；
It is arranged at the oil temperature supplying sensor and charge oil pressure sensor of oil feed line；
It is arranged at the return pressure sensor, returning-oil temperature sensor and return pressure sensor of return line；
It is arranged at the oil return of oil injector temperature sensor of oil injector oil return pipeline.
Embedded controller 5 is the embedded controllers 5 of CompactRIO.
Signal output module 6 includes alarm 6.1, printer 6.2 and display 6.3.
The signal input part of engine controller 3 connects dual fuel engine 1 peculiar to vessel by secondary signal acquisition module 7.
Secondary signal acquisition module 7 includes：
Inlet manifold's pressure sensor of the inlet manifold of dual fuel engine 1 peculiar to vessel is arranged at,
The exhaust main pressure sensor of the exhaust main of dual fuel engine 1 peculiar to vessel is arranged at,
The base bearing temperature sensor of 1 each base bearing of dual fuel engine peculiar to vessel is arranged at,
The exhaust gas temperature sensor of each cylinder blast pipe of dual fuel engine 1 peculiar to vessel is arranged at,
The air cooling inlet pressure sensor of the air cooler inlet pipeline of dual fuel engine 1 peculiar to vessel is arranged at,
The turbine outlet pressure sensor that dual fuel engine 1 peculiar to vessel discards turbine outlet pipeline is arranged at,
It is arranged at the pressure regulation temperature sensor and pressure regulation pressure sensing of gas pipeline before the pressure regulator valve of dual fuel engine 1 peculiar to vessel
Device；
It is arranged at the engine high-temperature water temperature sensor of the high temperature water outlet line of dual fuel engine 1 peculiar to vessel；
It is arranged at the charge air cooler high temperature water temperature sensor of the charge air cooler high temperature water outlet line of dual fuel engine 1 peculiar to vessel.
Engine controller 3 sends the signal for operating dual fuel engine, is received by secondary signal acquisition module 7 double
The signal of the current operating conditions of engine fuel feedback, the control signal sent further according to feedback signal adjustment, while anti-
The signal of feedback passes to embedded controller 5；Hydraulic dynamometer 2 is used to simulating that dual fuel engine waits at work to be true negative
Carry；First signal acquisition module 4 gathers the parameters of dual fuel engine current state, such as temperature of each part, pressure with
And flow etc., and the signal of collection is passed to embedded controller 5 by Ethernet, 485 buses；Embedded controller 5 connects
Engine controller 3 is received, the signal that the first signal acquisition module 4 passes over, in output module 6 after handling signal
Human-computer interaction interface on show, while by wherein exceed pre- duration value signal be delivered to alarm 6.1；Alarm 6.1 connects
The alarm signal that embedded controller 5 is passed over is received to be alarmed；The printing equipment printing speed of output module 6 is embedded
The historical variations trend for the signal that controller 5 exports.
Alarm 6.1 includes sound and light alarm and simulation lamp alarm, and wherein audible-visual annunciator 6.1 is reported by the way that hardware is in kind
It is alert, and it is the early warning by way of simulating alarm lamp on human-computer interaction interface to simulate lamp alarm.
Temperature conversion module in first signal acquisition module 4 includes 16 paths, and the temperature for gathering engine is believed
Number.Temperature change on one component is little, as long as and being accurate to a decimal point to temperature signal with regard to enough.Use the mould
Block fully meets temperature signal requirement, and cost is more cheap, by RS-485 bus communication mode real-time deliveries data to embedding
Enter formula controller 5.
The precision of signal and the requirement of acquisition rate are ensure that using CompactRIO equipment, pressure, flow etc. are believed
Number required precision it is higher, and rate of change is very fast, and will transmit data by Ethernet.
Alarm 6.1 is to send the sound by audible-visual annunciator 6.1 to be used as early warning with color break-up, and other alarm signals are then
The form of simulation lamp is used as early warning in human-computer interaction interface.
Dual fuel engine is compared with common diesel engine, more micro-spray system and gas burning systems, meanwhile, double fuel hair
Be provided with two fuel injectors in motivation, one used as micro-spray system, one make to use as main jet system.Gas burning system is
Newly-installed a set of combustion gas adjustment unit, the fuel gas supply regulation being switched to for engine under combustion gas pattern.And micro-spray system
Being used as the igniting of engine under combustion gas pattern, (diesel oil is compression ignition, and the burning-point of combustion gas is higher, can not pass through compression point
Combustion, makes engine be under fire, then switches to combustion gas again so first spraying into a small amount of diesel oil with micro-spray system).
In the present invention, the signal transmission of dual fuel engine and engine controller 3 be it is two-way, dual fuel engine with
The signal transmission of embedded controller 5 is unidirectional, and the signal of the signal of engine controller 3 and embedded controller 5 transmits
It is two-way.
Engine controller 3 gather engine part signal and export dual fuel engine operating necessary signals it is (double
The operating of engine fuel is controlled by the output signal of controller, such as：When oil spout (injection timing), spray it is more
Aperture of few oil (fuel injection pulsewidth), the regulation of servo oil and fuel pressure and various valves etc.).
Embedded controller 5 gathers remaining engine signal (row by the second acquisition module and engine control signal
Gathered except engine controller 3), communicated with engine controller 3 (equivalent to one flight data recorder of engine controller 3, it
The signal gathered do not show, so engine signal that it is collected and exporting control signal biography to engine
Each embedded controller 5 is passed, display is processed on embedded controller 5).
Some parameters on dual fuel engine 1 peculiar to vessel, can not directly it be gathered by sensor, in order in embedded survey
Control device 5 on intuitively see these parameters, just must by the communication transmitting data of engine controller 3, such as：When fuel oil sprays
Quarter, injection pulse width, air-fuel ratio λ, pressure regulation valve opening etc., the parameter not included in other engine controller 3, and peculiar to vessel
The parameter monitored is needed in the running of dual fuel engine 1, is just directly gathered by sensor, and show.Such as：High (low)
Warm pressure regulator valve import hydraulic pressure, engine export hydraulic pressure, oil cooler import hydraulic pressure, micro- spray main filter enter and (gone out) mouth fuel oil pressure
Power, height (low) warm water pump exit water temperature, oil cooler inlet water temperature, main combustible pipe road flow etc..Embedded controller 5 is to this
A little collections are shown with the signal to communicate, and judge whether it exceedes limit value allowable, if exceeding limit value, are alarmed, in addition
Embedded controller 5 passes to engine controller 3 after the signal of some collections is processed, such as：Collect calibrated wrench method
Blue signal, turn into power information after having handled, then pass to engine controller 3.In summary, embedded controller 5
Engine controller 3 and the signal of collection are integrated, is shown after processing in host computer, early warning processing is done to the signal of outlier,
Engine controller 3 is passed to after the part signal of collection is processed simultaneously, the input signal as controller normal operation.
The axle of hydraulic dynamometer 2 is connected with the axle of engine power output end, drives the rotor rotation in dynamometer machine, so as to
Drive the rotation of water in working chamber.Under the influence of centrifugal force, water is thrown to the outer casing inner wall of chamber, gives the rotating torque of shell one.
Brake arm on case body will pull the pulling force sensor in brake arm connection, so as to measure with an angle is rotated
Watt level.And by controlling the aperture surveyed draining valve on work machine and control butterfly valve, the pressure for changing water in survey work machine working chamber is come
Change the size of absorbed power (such as：To allow engine to send the 75% of rated power, then arranged by slowly adjusting to survey on work device
The aperture size of water valve, when the power seen on hydraulic dynamometer 2 is shown as the 75% of engine power rating, fixed draining valve
Aperture.The power that engine is sent is also the power that tested work device absorbs, so hydraulic dynamometer 2 has regulation engine loading
Effect).
Embodiment two
A kind of test method that the performance test of dual fuel engine 1 peculiar to vessel is carried out using above-mentioned test-bed：
By hydraulic dynamometer 2 to the input load of dual fuel engine 1 peculiar to vessel,
First signal acquisition module 4 sends the real-time motion signal of dual fuel engine peculiar to vessel 1 collected to embedded
Controller 5, secondary signal acquisition module 7 send the Real-time Feedback signal of dual fuel engine peculiar to vessel 1 collected to engine
Controller 3, engine controller 3 send engine Real-time Feedback signal to embedded controller 5,
Embedded controller 5 compared with the CRANK PULSES threshold value to prestore, will start engine real-time motion signal
Machine Real-time Feedback signal is compared with the feedback signal threshold value to prestore, if engine real-time motion signal exceeds CRANK PULSES threshold
Value, or engine Real-time Feedback signal exceed feedback signal threshold value, then pass through the output alarm signal of output module 6；
The signal that embedded the first signal acquisition module of reception signal 4 of controller 5 and engine controller 3 pass over,
Before the engine is started up, first it may determine that whether engine meets motor-car condition according to signal.The signal that will be passed over simultaneously
Shown in human-computer interaction interface, and some signals of collection are sent to engine controller 3 after processing, as starting
3 necessary input signal of machine controller.Also some important signals are processed simultaneously, if signal does not limit scope in setting,
Corresponding alarm signal is then passed into alarm 6.1.
Hydraulic dynamometer 2 be used for simulate dual fuel engine 1 peculiar to vessel in course of work real load situation.Double combustions peculiar to vessel
The axle of the material power take-off of engine 1 is connected with the axle of hydraulic dynamometer 2, the rotor rotation in dynamometer machine is driven, so as to drive
The rotation of water in working chamber.In hydraulic dynamometer 2 under the influence of centrifugal force, water is thrown to the outer casing inner wall of chamber, to shell one
Rotating torque.Brake arm on case body will pull the pulling force sensor in brake arm connection with an angle is rotated,
So as to record power size.And by controlling the aperture surveyed draining valve on work machine and control butterfly valve, change and survey water in work machine working chamber
Pressure change the size of absorbed power.
First signal acquisition module 4 is used for the running state parameter of acquisition vessel dual fuel engine 1, wherein including temperature
The signals such as degree, pressure, flow, these signals collected are passed into embedded controller 5.
Engine controller 3 is used for the operating that output signal controls dual fuel engine 1 peculiar to vessel, receives dual fuel engine
Feedback signal, further according to feedback signal, regulation outputs signal to dual fuel engine 1 peculiar to vessel, while signal is passed to embedding
Enter formula controller 5.
Embedded controller 5 is used to receive the signal that the transmission of the signal acquisition module 4 of engine controller 3 and first comes, right
Signal carries out a series of processing, such as：The signal that transmission comes is preserved, current demand signal is shown on human-computer interaction interface and will be surpassed
Alarm 6.1 etc. is given in the signal transmission for going out limits.The collection signal after some processing is also fed back into engine control simultaneously
Device 3 processed, the necessary signals of dual fuel engine are controlled as engine controller 3.(some on dual fuel engine 1 peculiar to vessel
Parameter, can not directly it be gathered by sensor, it is just necessary in order to intuitively see these parameters on embedded controller 5
By the communication transmitting data of engine controller 3, such as：Fuel oil time for spraying, injection pulse width, air-fuel ratio λ, pressure regulation valve opening
Deng, the parameter not included in other engine controller 3, and need to supervise in the running of dual fuel engine 1 peculiar to vessel
The parameter of survey, just directly gathered, and shown by sensor.Such as：High (low) warm pressure regulator valve import hydraulic pressure, engine export water
Pressure, oil cooler import hydraulic pressure, to enter and (go out) mouth fuel pressure, height (low) warm water pump exit water temperature, lubricating oil cold for micro- spray main filter
But device inlet water temperature, main combustible pipe road flow etc..Embedded controller 5 is gathered to these and shown with the signal to communicate, and
Judge whether it exceedes limit value allowable, if exceeding limit value, alarm, embedded controller 5 is by the signal of some collections in addition
Engine controller 3 is passed to after processing, such as：The signal of torque flange is collected, turning into power after having handled believes
Breath, then pass to engine controller 3.In summary, the particular content of embedded controller 5 is exactly to integrate engine control
Device 3 and the signal of collection, show after processing in host computer, do early warning processing to the signal of outlier, while by the portion of collection
Sub-signal passes to engine controller 3 after processing, the input signal as controller normal operation.)
Alarm 6.1 is used to respond the alarm signal that the embedded transmission of controller 5 comes, wherein relating to dual fuel engine
Idle, parking signal sends early warning using audible-visual annunciator 6.1, and other alarm signals are sent out using the mode of simulation lamp
Go out early warning.
Printing equipment is used for the historical variations ripple that the embedded controller 5 of printing speed is shown in signal on human-computer interaction interface
Shape, and form of the embedded generation of controller 5 of printing etc..
When dual fuel engine 1 peculiar to vessel prepares to run, embedded controller 5 first passes according to the first signal acquisition module 4
The signal passed judges whether current state meets the motor-car condition of dual fuel engine 1 peculiar to vessel, if meeting to show and can enter
Car of taking action indicates, can be shown in which aspect lacks motor-car condition if being unsatisfactory for.
When dual fuel engine operates, engine controller 3 receives the feedback that secondary signal acquisition module 7 sends over
Signal, the current working condition constantly regulate control signal fed back according to dual fuel engine, while also pass to signal
Embedded controller 5.The first signal acquisition module 4 also state parameter in ceaselessly acquisition vessel with dual fuel engine 1, also will
Signal passes to embedded controller 5.Embedded controller 5 receives and comes from the signal acquisition module 4 of engine controller 3 and first
Signal, signal is subjected to integration processing, such as：Preservation operation is carried out to signal, selects the important signal in part in man-machine interaction
Shown on interface, early warning processing is done to passing to alarm 6.1 beyond the signal of limits.It is in embedded controller 5
During running status, printing equipment, the history that signal on human-computer interaction interface can be shown in the embedded controller 5 of printing speed becomes
Change waveform, and form of the embedded generation of controller 5 of printing etc..
Collecting part, the capture card of the signal access engine controller 3 of each road sensor, engine controller 3 are adopted
Truck passes to embedded controller 5 after sensor to be come out to the data signal that analog signal conditioner can identify into computer,
Data signal is converted into actual physical quantity to embedded controller 5 again, data is shown, the alert process more than limit value；Communication
Part, similarly.
Installation operative sensor output signal on the engine is directly accessed engine controller, in engine controller
Logical process is done according to the input signal of various sensors by portion, exports the control (analog quantity) most beneficial for engine stabilizer operation
Signal (voltage, electric current), adjust various valve locations and working condition on engine and (including oil spout, exhaust solenoid valve, fire
Oil pump adjustment module, servo oil module etc.) so that start the stable operation of function.
Each sensor have a test scope (range) (range of such as one pressure sensor may be 0~
300bar), but sensor output is mostly 0~10V or 4~20mA standard signal, and the pressure if range is 0~300bar passes
Sensor, measure 150bar pressure signal when, output be exactly 5V or 12mA signal.Wrapped on embedded controller 5
The subprogram contained is exactly the signal not of uniform size for exporting these sensors, is converted into the actual physics letter measured of sensor
Number (unit after changing be exactly into bar, DEG C, Nm etc.).
It with Ethernet is media transmission Modbus agreements that the communication of embedded controller 5 and engine controller 3, which is,
The numerical value transmitted in Modbus agreements can only be unsigned int (being only integer), so when data are transmitted, control
The numerical value that device will communicate is multiplied by a coefficient (being usually 10 times or 100 times), and the decimal carried in script numerical value is changed
Into integer, and embedded controller 5 receives these data and then divided by the coefficient that is multiplied before again.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
- A kind of 1. dual fuel engine testing stand for performance test peculiar to vessel, it is characterised in that：The work(of dual fuel engine (1) peculiar to vessel The input shaft of rate output axis connection hydraulic dynamometer (2), the control terminal of the dual fuel engine (1) peculiar to vessel are connected with engine Controller (3), the engine controller (3) connect embedded controller (5), embedded controller (5) connection first Signal acquisition module (4), first signal acquisition module (4) include being arranged at the number of the dual fuel engine peculiar to vessel (1) Individual sensor；The engine controller (3) connects signal output module (6) by embedded controller (5).
- 2. a kind of dual fuel engine testing stand for performance test peculiar to vessel according to claim 1, it is characterised in that described First signal acquisition module (4) includes being used for the micro-spray system signal for gathering dual fuel engine peculiar to vessel (1) micro-spray system Collecting unit, and for gathering the gas burning system signal gathering unit of dual fuel engine peculiar to vessel (1) gas burning system.
- 3. a kind of dual fuel engine testing stand for performance test peculiar to vessel according to claim 2, it is characterised in that described Gas burning system signal gathering unit includes：The main combustible pipe road stream set on the gas inlet pipe road before fuel-control assembly Quantity sensor.
- 4. a kind of dual fuel engine testing stand for performance test peculiar to vessel according to claim 2, it is characterised in that described Micro-spray system signal gathering unit includes：It is arranged at the pre-filtering fuel pressure transmitter of micro-spray system prefilter inlet pipeline；It is arranged at the supply pump fuel pressure transmitter of micro-spray system supply pump inlet pipeline；It is arranged at the main filter import fuel pressure transmitter of main filter inlet pipeline；It is arranged at the main filter outlet fuel pressure sensor of main filter outlet conduit；It is arranged at the oil temperature supplying sensor and charge oil pressure sensor of oil feed line；It is arranged at the return pressure sensor, returning-oil temperature sensor and return pressure sensor of return line；It is arranged at the oil return of oil injector temperature sensor of oil injector oil return pipeline.
- A kind of 5. dual fuel engine testing stand for performance test peculiar to vessel according to claim 1, it is characterised in that：It is described Embedded controller (5) is the embedded controllers of CompactRIO (5).
- A kind of 6. dual fuel engine testing stand for performance test peculiar to vessel according to claim 1, it is characterised in that：It is described Signal output module (6) includes alarm (6.1), printer (6.2) and display (6.3).
- A kind of 7. dual fuel engine testing stand for performance test peculiar to vessel according to claim 1, it is characterised in that：It is described The signal input part of engine controller (3) connects the dual fuel engine peculiar to vessel by secondary signal acquisition module (7) (1)。
- 8. a kind of dual fuel engine testing stand for performance test peculiar to vessel according to claim 7, it is characterised in that described Secondary signal acquisition module (7) includes：Inlet manifold's pressure sensor of dual fuel engine peculiar to vessel (1) inlet manifold is arranged at,The exhaust main pressure sensor of dual fuel engine peculiar to vessel (1) exhaust main is arranged at,The base bearing temperature sensor of each base bearing of the dual fuel engine peculiar to vessel (1) is arranged at,The exhaust gas temperature sensor of each cylinder blast pipe of dual fuel engine peculiar to vessel (1) is arranged at,The air cooling inlet pressure sensor of dual fuel engine peculiar to vessel (1) the air cooler inlet pipeline is arranged at,The turbine outlet pressure sensor that the dual fuel engine peculiar to vessel (1) discards turbine outlet pipeline is arranged at,The pressure regulation temperature sensor of gas pipeline and pressure regulation pressure before dual fuel engine peculiar to vessel (1) pressure regulator valve is arranged to pass Sensor；It is arranged at the engine high-temperature water temperature sensor of dual fuel engine peculiar to vessel (1) the high temperature water outlet line；It is arranged at the charge air cooler high-temperature water TEMP of dual fuel engine peculiar to vessel (1) the charge air cooler high temperature water outlet line Device.
- A kind of 9. examination that dual fuel engine performance test peculiar to vessel is carried out using the test-bed as described in claim any one of 1-8 Proved recipe method, it is characterised in that：By hydraulic dynamometer (2) to dual fuel engine peculiar to vessel (1) input load,First signal acquisition module (4) sends dual fuel engine (1) the real-time motion signal peculiar to vessel collected to institute Embedded controller (5) is stated, secondary signal acquisition module (7) is anti-in real time by the dual fuel engine (1) peculiar to vessel collected Feedback signal sends to the engine controller (3), the engine controller (3) and sends out the engine Real-time Feedback signal The embedded controller (5) is delivered to,The embedded controller (5) by the engine real-time motion signal compared with the CRANK PULSES threshold value to prestore, By the engine Real-time Feedback signal compared with the feedback signal threshold value to prestore, if the engine real-time motion signal Exceed the feedback signal threshold value beyond the CRANK PULSES threshold value, or the engine Real-time Feedback signal, then pass through output Module (6) output alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710839161.3A CN107560863B (en) | 2017-09-18 | 2017-09-18 | Test bench and method for testing performance of marine dual-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710839161.3A CN107560863B (en) | 2017-09-18 | 2017-09-18 | Test bench and method for testing performance of marine dual-fuel engine |
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