CN109870206A - The engine fuel consumption quantity test device and method used when a kind of research and development - Google Patents
The engine fuel consumption quantity test device and method used when a kind of research and development Download PDFInfo
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- CN109870206A CN109870206A CN201910116974.9A CN201910116974A CN109870206A CN 109870206 A CN109870206 A CN 109870206A CN 201910116974 A CN201910116974 A CN 201910116974A CN 109870206 A CN109870206 A CN 109870206A
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Abstract
The present invention provides the engine fuel consumption quantity test devices used when a kind of research and development, including pressurizing device (1), gauge line (2), cross oil pipe (3), valve (4), high-speed camera (5), display instrument (6), it is characterised in that: pressurizing device (1) enables to keep certain gas pressure in the gauge line (2) being tightly connected with pressurizing device (1)；Gauge line (2) front end is connect with pressurizing device (1) pressurization gas outlet seal；Gauge line (2) rear end vertical connection is crossed oil pipe (3), and is invented and additionally provided a kind of method of measurement.By the present invention in that adapting to the combustion fuel consumption measurement of different accuracy requirement with the gauge line of different tube diameters, can intuitively, quickly judge which phase fuel consumption is big when transient state, reduce calculation amount, accelerate research and development progress.
Description
Technical field
The present invention relates to a kind of a kind of tests of the engine fuel consumption quantity used when measuring technique more particularly to research and development
Device and method.
Background technique
Vehicle development phase needs repeated measurement vehicle and engine fuel consumption quantity, in addition to needing to measure stable state fuel oil
Consumption is sometimes also required to research transient state fuel consumption.The fuel oil consumption test of rack generally uses stable state fuel consumption
Measuring instrument, this fuel oil consumption measuring instrument (abbreviation fuel consumption meter) are not suitable for the fuel consumption measurement of short period, especially send out
Motivation accelerates and the transient processes such as deceleration are very short, stable state fuel consumed amount measurer cannot be used to measure.Energy available on the market
The measuring instrument of transient state fuel oil consumption is measured, it is often costly, therefore specialized factory and research and development institution are all seldom equipped with, and lead to the exhibition of looking on the bright side of things
It can not find measuring device when transient test and research.And stable state fuel consumed amount measurer has various conditions to limit, and such as needs
Be powered, need to be horizontally arranged, cannot be vibrated in work, device than cumbersome etc., cause some special occasions and on vehicle
Stable state fuel consumed amount measurer cannot be used to measure.
Summary of the invention
The object of the present invention is to provide a kind of test device of the engine fuel consumption quantity used when research and development and methods, are
It solves the problems, such as that engine pedestal transient test and special occasions and vehicle test lack fuel consumption measuring device, thoroughly solves
Transient state fuel consumption measuring device is prohibitively expensive and some special occasions and general stable state cannot be used on vehicle
The problem of fuel consumption meter measures.
The technical solution of the present invention is to provide the engine fuel consumption quantity test devices used when a kind of research and development, including add
Pressure device, crosses oil pipe, valve, high-speed camera, display instrument at gauge line, it is characterised in that: pressurizing device enables to and adds
Certain gas pressure is kept in the gauge line that pressure device is tightly connected；Gauge line front end and pressurizing device pressurization gas outlet seal connect
It connects；Gauge line rear end vertical connection crosses oil pipe；
There is label above gauge line, the position close to pressurizing device is provided with gas bleeder valve；
It crosses oil pipe and is connect respectively with engine fuel oil inlet pipe in use, crossing oil pipe both ends, into the combustion of engine combustion
Oil will flow through this and cross oil pipe；
It crosses and valve is set in oil pipe；Valve is a switch valve, logical for closing or opening the fuel oil oil inlet in oil pipe
Road closes or opens the channel that gauge line was connected to oil pipe；
Valve was mounted in oil pipe, and it includes disc, sealing column, rotating bars；Butterfly disk is a circular discs；Sealing column is
Cylindrical body is fixed on butterfly disk；The disk of sealing column central axis butterfly disk；Rotating bar is fastened in the disk of butterfly disk and passes through
Butterfly disk center；Entire valve is to be built in oil pipe, and can be rotated with the center line of rotating bar；
When valve is at first position, metering tube passage is closed, and gauge line is not connected to oil pipe is crossed；Oil pipe channel is crossed to open
It opens, external fuel oil passed through oil pipe and enters engine combustion；
When valve is at the second position, metering tube passage is opened, and gauge line is connected to oil pipe is crossed, and the fuel oil of gauge line can lead to
It crossed oil pipe and enters engine oil inlet pipeline, the fuel oil of aftercombustion consumption；When valve is in the second position, crosses oil pipe channel and close
It closes, external fuel oil cannot enter engine combustion by crossing oil pipe；
When valve is in the third place, gauge line seals valve passage and opens, and gauge line is connected to oil pipe is crossed；Cross oil pipe channel
Also it opens, external fuel oil can enter engine combustion by crossing oil pipe；At this moment metering pipe pressure was lower than the pressure in oil pipe,
The fuel oil crossed in oil pipe can flow into gauge line；
High-speed camera is mounted near gauge line and display instrument, for shooting the variation of gauge line fuel and display instrument
The variation for the data that table is shown, high-speed camera can start simultaneously with valve；Display instrument is used for display Engine Block Test
The data of equipment test.
The engine fuel consumption quantity test used when the present invention also provides a kind of using research and development described in claim
Device measures method, the specific steps of which are as follows:
Step 1 accesses gauge line in engine fuel oil inlet pipe；
Step 2, starting engine heat engine are tested engine fuel consumption quantity with the stable state and Instantaneous Fuel Consumption Monitor of rack and are filled
The mutual calibration confirmation set；
Step 3, engine fuel consumption quantity test device start to measure, and steps are as follows:
Gas bleeder valve in step 3.1, opening gauge line, goes to the third place for valve, at this time since fuel pipe has just
Pressure, fuel oil can enter in gauge line, and when fuel oil is full of gauge line, changeover valve 4 closes gauge line by sealing column；
Step 3.2, starting pressurizing device, pressurize to gauge line；
Valve is gone to the second position by step 3.3, starts simultaneously at the engine transients operating condition that enters and need to measure, at this moment mistake
The fuel oil oil inlet of oil pipe is disconnected, and gauge line is connected to oil pipe is crossed, and the fuel oil in gauge line is applied in oil inlet negative pressure and pressurizing device
Under the positive pressure added, into engine oil inlet pipeline, fuel oil that aftercombustion consumes；
Step 3.4 starts high-speed camera while valve goes to the second position, and record gauge line fuel oil is at any time
The motor instant supplemental characteristic of variation and display instrument；
Step 3.5, according to time and the moving distance of gauge line (2) intermediate fuel oil, fuel consumption when calculating transient state, draw
Fuel consumption versus time curve out；At this moment the fuel consumption versus time curve drawn, with the practical spray of atomizer
The fuel oil versus time curve consumed to combustion chambers burn, there is lag in time, in analysis transient state fuel consumption
When measuring the influence to actual vehicle speed, the time of lag need to be made up；
Step 3.6, when gauge line fuel oil evacuate when, stop measurement, valve is gone into first position, is then shut off pressurization
Then device opens the gas bleeder valve on gauge line, after waiting gas-pressurizeds to release, valve is gone to the third place, in gauge line
After being filled with fuel oil, repeats above step and continue to measure.
The beneficial effects of the present invention are:
(1) structure is simple, at low cost, easy to make, easy for installation.
(2) precision is high, can theoretically measure each distributive value of engine
(3) can with stable state, Instantaneous Fuel Consumption Monitor demarcates mutually.
(4) by using the gauge line of different tube diameters, the combustion fuel consumption measurement of different accuracy requirement is adapted to
(5) can intuitively, quickly judge which phase fuel consumption is big when transient state, reduce calculation amount, quickening research and develop into
Degree.
It (6) can be in the occasion such as field that cannot use steady state measurement instrument without making on alternating current or the big vehicle of vibration
With.The above beneficial effect ensure that engine fuel consumption quantity measurement accuracy is higher using after apparatus of the present invention, it is easier to, more
Accurately.
Detailed description of the invention
The engine fuel consumption quantity measuring device schematic diagram used when Fig. 1 is research and development of the present invention；
Fig. 2 is valve schematic diagram of the present invention；
Fig. 3 is that 2 channel of gauge line of the present invention is closed, and crosses the schematic diagram that 3 channel of oil pipe is opened；
Fig. 4 is that 2 channel of gauge line of the present invention is opened, and crosses the schematic diagram that 3 channel of oil pipe is closed；
Fig. 5 is the schematic diagram that 2 channel of gauge line of the present invention and mistake 3 channel of oil pipe are opened.
Wherein: 1- pressurizing device；2- gauge line；3- crosses oil pipe；4-- valve；5- high-speed camera；6- display instrument；7-
Butterfly disk；8- sealing column；9- rotating bar；
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
As shown in Figure 1, this embodiment offers the engine fuel consumption quantity test device used when a kind of research and development, packet
It includes pressurizing device 1, gauge line 2, cross oil pipe 3, valve 4, high-speed camera 5, display instrument 6.Wherein: pressurizing device 1 is a kind of
Automatic pumping pressure structure or high pressure gas holder, inflate pressure structure principle similar to inflator, when use, can automatically continue
It inflates pressurization, makes to keep certain gas pressure in the gauge line 2 being tightly connected with pressurizing device 1.
Gauge line 2 is hard transparent pipe, generally uses plastic production, and 2 front end of gauge line is higher than other parts, prevents from not adding
Liquid when pressure inside pipe is flowed out from 2 front end of gauge line.2 front end of gauge line is connect with the pressurization gas outlet seal of pressurizing device 1.Meter
2 rear end vertical connection of buret crosses oil pipe 3.
Gauge line 2 marks above to be had, and the position close to pressurizing device is provided with gas bleeder valve 10.
For convenient for observing and reducing length, gauge line 2 can be coiled into fillet of screw shape or multiple U-shape.
Crossing oil pipe 3 is hard tube, crosses 3 internal diameter of oil pipe and engine fuel oil inlet bore is roughly the same.
It crosses oil pipe 3 and is connect respectively with engine fuel oil inlet pipe in use, crossing 3 both ends of oil pipe, into engine combustion
Fuel oil crosses oil pipe 3 for this is all flowed through.
It crosses and valve 4 is set in oil pipe 3.Valve 4 is a switch valve, for closed or opened the fuel oil in oil pipe 3 into
Oily channel and gauge line 2 were connected to the channel of oil pipe 3.Since gauge line 2 is vertically to access oil pipe 3, so gauge line 2
Closing face is vertical with the closing face for crossing oil pipe 3.
As shown in Figure 2-5, which is designed by cleverly structure, be can guarantee 2 channel of gauge line and is crossed the logical of oil pipe 3
Road will not simultaneously close off, that is to say, that when one of valve is closed, what another valve was necessarily opened, simultaneously, moreover it is possible to guarantee
2 channel of gauge line, 3 channel of oil pipe excessively are switched on and are connected to.
Valve 4 was mounted in oil pipe 3, and it includes disc 7, sealing column 8, rotating bars 9.Structure See Figure 2-5.Butterfly disk 7
It is a circular discs.Sealing column 8 is a cylindrical body, is fixed on butterfly disk 7, the disk of 8 central axis butterfly disk 7 of sealing column.Rotation
Bar 9 is then fastened in the disk of butterfly disk 7 and passes through 7 center of butterfly disk.Entire valve 4 was built in oil pipe 3, and can be with rotation
The center line of bar 9 turns an angle.
As shown in figure 3,2 channel of gauge line is closed when valve 4 is at first position, gauge line 2 is not connected to oil pipe 3 is crossed；
The unlatching of 3 channel of oil pipe is crossed, external fuel oil can enter engine combustion by crossing oil pipe 3.
As shown in figure 4,2 channel of gauge line is opened when valve 4 is at the second position, gauge line 2 is connected to oil pipe 3 is crossed, and is counted
The fuel oil of buret 2 can pass through oil pipe 3 and enter engine oil inlet pipeline, the fuel oil of aftercombustion consumption.Valve 4 is in second
It when setting, crosses 3 channel of oil pipe and closes, external fuel oil cannot enter engine combustion by crossing oil pipe 3.
As shown in figure 5,2 channel of gauge line sealing valve is opened when valve 4 is in the third place, gauge line 2 and excessively oil pipe 3
Connection；It crosses 3 channel of oil pipe also to open, external fuel oil can enter engine combustion by crossing oil pipe 3.At this moment if gauge line 2
Pressure was lower than the pressure in oil pipe 3, and the fuel oil crossed in oil pipe 3 can flow into gauge line 2.Rotating bar 9 is generally with external
Electric machine actuating mechanism driving.
High-speed camera 5 is high-speed camera or recording apparatus, is mounted near gauge line 2 and display instrument 6, for shooting
Gauge line 2 and display instrument 6 image mechanism equipped with automatic starting thereon, can start simultaneously with valve 4.Display instrument 6 is used for
The data that display is often tested with test equipment with engine, such as revolving speed, torque, timing time.High-speed camera is per second can be with
Shoot 2000 frames or so.Fuel oil in gauge line 2 is reduced because of burning consumption, and movement speed is related to gauge line caliber, pipe
Diameter is smaller, and speed is faster.Adjusting pipe diameter as needed makes every frame move the distance that can be observed, then can calculate every
The fuel oil that frame time consumes.Due to every frame time can very short (1/2000 second even less), precision is very high, theoretically may be used
It can be tested out with reaching an engine fuel oil of every injection.
The embodiment additionally provides a kind of measurement method of the engine fuel consumption quantity test device used when research and development,
The specific steps of which are as follows:
Step 1 accesses gauge line 3 in engine fuel oil inlet pipe.
When completing step 1, need to be connected and fixed all parts of the invention at the scene.It is conditional to seal in advance
Dress.
Step 2, starting engine heat engine, it is conditional to carry out dress of the present invention with the stable state of rack and Instantaneous Fuel Consumption Monitor
The mutual calibration confirmation set.Scaling method is: operation engine is measured simultaneously with stable state or Instantaneous Fuel Consumption Monitor and apparatus of the present invention
Fuel oil consume (apparatus of the present invention measurement method, be described below), whether the data for comparing 2 kinds of device measurings consistent, if difference compared with
Greatly, then it needs to find out reason, corrects equipment devious；
Step 3, apparatus of the present invention start to measure, and methods of measurement and calculation is as follows:
Gas bleeder valve in step 3.1, opening gauge line 2, goes to the third place for valve 4, at this time since fuel pipe has
Positive pressure, fuel oil can enter in gauge line 2, and when fuel oil is filled substantially with gauge line 2, changeover valve 4 closes metering by sealing column 8
Pipe；
Step 3.2, starting pressurizing device 1, pressurize to gauge line 2.
Valve 4 is gone to the second position by step 3.3, is started simultaneously at (anxious to accelerate into the engine transients operating condition that need to be measured
Or anxious deceleration etc.), the fuel oil oil inlet at this moment crossing oil pipe 3 is disconnected, and gauge line 2 is connected to oil pipe 3 is crossed, the fuel oil in gauge line 2
Under the positive pressure that oil inlet negative pressure and pressurizing device apply, rapidly enter in engine oil inlet pipeline, aftercombustion consumes
Fuel oil.
Step 3.4 starts high-speed camera 5 while valve 4 goes to the second position, and record 2 fuel oil of gauge line is at any time
Between variation and display instrument motor instant supplemental characteristic.
Step 3.5, according to the moving distance of 2 intermediate fuel oil of time and gauge line, so that it may fuel consumption when calculating transient state
Amount, draws fuel consumption versus time curve, the song it should be understood that fuel consumption at this moment drawn changes with time
Line has lag with the practical fuel oil versus time curve for being sprayed onto combustion chambers burn consumption of atomizer in time,
In actual analysis, influence of the transient state fuel consumption to speed is such as analyzed, then needs to consider to correct the time of this section of lag, it is stagnant
The time is related with the flowing velocity of the oil circuit of measurement point to atomizer distance and fuel oil afterwards, that is to say, that lag time T=distance
L/ speed S.Since gauge line is smaller than the caliber of fuel oil oil inlet pipe, thus speed be it is different, separate computations fuel oil counting
The flowing time of buret and fuel oil oil inlet pipe.In addition the actual fuel injection pressure of fuel injector can also be surveyed, and according to fuel injector
Lag time is assessed and demarcated to electric signal etc..This revised curve and speed, engine power, torque, revolving speed, air inlet
The parameters versus time curves such as amount, excess air coefficient, instruction pressure, row's temperature, discharge, NVH are put together, can be used to
Research transient behaviour under engine performance parameter how to change over time, thus in next step optimize engine performance provide according to
According to.
It names specific example and illustrates calculation method (fuel is diesel oil):
For example 2 internal diameter of gauge line is 1 millimeter, then its area is exactly 3.14X0.52=0.785mm2.If dyestuff is mobile
Distance is 1 meter (1000 millimeters), then the volume of fuel consumption is exactly 785mm3Namely 0.785 milliliter.0# diesel oil density is
0.835g/ml, then the mobile 1 meter of representative of dyestuff consumes 0.785 milliliter of diesel oil, that is, 0.785X0.835=0.6555g bavin
Oil.If mobile 1 meter 1 second time-consuming, unit fuel oil consumption is exactly 0.6555/1=0.6555g/s=2.34kg/h.From calculating
As it can be seen that instantaneous measurement device of the invention is very sensitive, the fuel oil of 0.7 gram or so of consumption, the gauge line 2 that 1 millimeter of internal diameter
Fuel oil flows through 1 meter of distance, if by centimetre be minimum range measurement unit, can accurately measure the fuel oil to 0.007 gram
Transient changing value.Due to using high-speed camera, though the mobile very little distance of fuel oil in gauge line 2, such as 1 millimeter,
Apparatus of the present invention are also that can recorde out, therefore precision is very high.Actual use, the accuracy that can according to need, selection
The gauge line of different inner diameters, transient test general for precise requirements can be used the biggish gauge line of internal diameter, in this way may be used
To reduce the metering length of tube needed, extend the time of working condition measuring.
Step 3.6, when the fuel oil of gauge line 2 evacuates fastly, stop measurement, valve is gone into first position, is then shut off
Then pressurizing device 1 opens the gas bleeder valve on gauge line 2, after waiting gas-pressurizeds to release, valve 4 is gone to the third place, is being counted
After being filled with fuel oil in buret 2, repeatable above step continues to measure.
After the test, it shuts down, disassembly, clear up apparatus of the present invention equipment and stores.
To sum up, the engine fuel consumption quantity test device used when the research and development of the present embodiment can effectively measure engine
Stable state and transient state fuel consumption, precision is high, and at low cost, structure is simple, easy for installation, is applicable in very much the research and development of engine economy
It needs.
Although the principle of the present invention is described in detail above in conjunction with the preferred embodiment of the present invention, this field skill
Art personnel are it should be understood that above-described embodiment is only the explanation to exemplary implementation of the invention, not to present invention packet
Restriction containing range.Details in embodiment is simultaneously not meant to limit the scope of the invention, without departing substantially from spirit of the invention and
In the case where range, any equivalent transformation based on technical solution of the present invention, simple replacement etc. obviously change, and all fall within
Within the scope of the present invention.
Claims (6)
1. the engine fuel consumption quantity test device used when a kind of research and development, including it is pressurizing device (1), gauge line (2), excessively oily
Manage (3), valve (4), high-speed camera (5), display instrument (6), it is characterised in that: pressurizing device (1) enables to and pressurizes
Certain gas pressure is kept in the gauge line (2) that device (1) is tightly connected；Gauge line (2) front end and pressurizing device (1) are pressurizeed out
Port is tightly connected；Gauge line (2) rear end vertical connection crosses oil pipe (3)；
Gauge line (2) marks above to be had, and the position close to pressurizing device is provided with gas bleeder valve (10)；
It crosses oil pipe (3) and is connect respectively with engine fuel oil inlet pipe in use, crossing oil pipe (3) both ends, into engine combustion
Fuel oil will flow through this and cross oil pipe (3)；
It crosses in oil pipe (3) and valve (4) is set；Valve (4) is a switch valve, for closing or opening the combustion in oil pipe (3)
Oily oil inlet passage closes or opens the channel that gauge line (2) was connected to oil pipe (3)；
Valve (4) was mounted in oil pipe (3), and it includes disc (7), sealing column (8), rotating bars (9)；Butterfly disk (7) is a circle
Shape disk；Sealing column (8) is a cylindrical body, is fixed on butterfly disk (7)；The disk of sealing column (8) central axis butterfly disk (7)；Turn
Lever (9) is fastened in the disk of butterfly disk (7) and passes through butterfly disk (7) center；Entire valve (4) was built in oil pipe (3),
And it can be rotated with the center line of rotating bar (9)；
When valve (4) is at first position, gauge line (2) channel is closed, and gauge line (2) is not connected to oil pipe (3) are crossed；Cross oil pipe
(3) channel is opened, and external fuel oil passed through oil pipe (3) into engine combustion；
When valve (4) is at the second position, gauge line (2) channel is opened, and gauge line (2) is connected to oil pipe (3) are crossed, gauge line
(2) fuel oil can pass through oil pipe (3) into engine oil inlet pipeline, the fuel oil of aftercombustion consumption；Valve (4) is in second
It when position, crosses oil pipe (3) channel and closes, external fuel oil cannot enter engine combustion by crossing oil pipe (3)；
When valve (4) is in the third place, gauge line sealing valve (2) channel is opened, and gauge line (2) is connected to oil pipe (3) are crossed；It crosses
Oil pipe (3) channel is also opened, and external fuel oil can enter engine combustion by crossing oil pipe (3)；At this moment gauge line (2) pressure is low
In the pressure crossed in oil pipe (3), the fuel oil crossed in oil pipe (3) can be flowed into gauge line (2)；
High-speed camera (5) is mounted near gauge line (2) and display instrument (6), for shooting the variation of gauge line (2) fuel
And the variation of the data of display instrument (6) display, high-speed camera (5) can start simultaneously with valve (4)；Display instrument (6)
The data tested for display with Engine Block Test equipment.
2. according to the engine fuel consumption quantity test device used when a kind of research and development described in claim (1), feature exists
In: gauge line (2) can be coiled into fillet of screw shape or multiple U-shape.
3. according to the engine fuel consumption quantity test device used when a kind of research and development described in claim (1), feature exists
In: valve (4) can guarantee that gauge line (2) channel and the channel of oil pipe (3) excessively will not simultaneously close off, and also can guarantee gauge line (2)
Channel, oil pipe (3) channel excessively are switched on and are connected to.
4. according to the engine fuel consumption quantity test device used when a kind of research and development described in claim (1), feature exists
In: the external electric machine actuating mechanism of rotating bar (9) drives.
5. according to the engine fuel consumption quantity test device used when a kind of research and development described in claim (1), feature exists
In: high-speed camera is per second can to shoot 2000 frames；Gauge line (2) interior fuel oil is reduced, the mobile speed of fuel oil because of burning consumption
, as needed adjusting pipe diameter related to gauge line caliber is spent, so that every frame is moved the distance that can be observed, thus when calculating every frame
Between the fuel oil that consumes.
6. it is a kind of using research and development described in claim when the engine fuel consumption quantity test device that uses measure method,
The specific steps of which are as follows:
Step 1 accesses gauge line (3) in engine fuel oil inlet pipe；
Step 2, starting engine heat engine, with the stable state and Instantaneous Fuel Consumption Monitor of rack to engine fuel consumption quantity test device
Mutually calibration confirmation；
Step 3, engine fuel consumption quantity test device start to measure, and steps are as follows:
Gas bleeder valve in step 3.1, opening gauge line (2), goes to the third place for valve (4), at this time since fuel pipe has
Positive pressure, fuel oil can enter in gauge line (2), and when fuel oil is full of gauge line (2), changeover valve 4 closes meter by sealing column (8)
Buret；
Step 3.2, starting pressurizing device (1), pressurize to gauge line (2)；
Valve (4) is gone to the second position by step 3.3, is started simultaneously at into the engine transients operating condition that need to be measured, at this moment excessively oily
The fuel oil oil inlet of pipe (3) is disconnected, and gauge line (2) is connected to mistake oil pipe (3), the fuel oil in gauge line (2) in oil inlet negative pressure and
Under the positive pressure that pressurizing device applies, into engine oil inlet pipeline, fuel oil that aftercombustion consumes；
Step 3.4, while valve (4) goes to the second position start high-speed camera (5), record gauge line (2) fuel oil with
The variation of time and the motor instant supplemental characteristic of display instrument；
Step 3.5 draws combustion according to time and the moving distance of gauge line (2) intermediate fuel oil, fuel consumption when calculating transient state
Oil consumption versus time curve；At this moment the fuel consumption versus time curve drawn, and atomizer is practical is sprayed onto combustion
The fuel oil versus time curve for burning room burning consumption, there is lag in time, in analysis transient state fuel consumption pair
When the influence of actual vehicle speed, the time of lag need to be made up；
Step 3.6, when gauge line (2) fuel oil evacuate when, stop measurement, valve is gone into first position, is then shut off pressurization
Device (1) then opens the gas bleeder valve on gauge line (2), after waiting gas-pressurizeds to release, valve (4) is gone to the third place,
After being filled with fuel oil in gauge line (2), repeats above step and continue to measure.
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| CN105756834A (en) * | 2015-12-15 | 2016-07-13 | 江南大学 | RANSAC-based direct injection engine single fuel injection amount liquid level height visual detection method |
| CN206917766U (en) * | 2017-07-17 | 2018-01-23 | 上海同圆发动机测试设备有限公司 | The engine fuel thermostat controlled using dual-stage servo system |
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