A kind of Instantaneous Fuel Consumption Monitor calibration system and its scaling methodTechnical field
The invention belongs to technical field of automobile detection, and in particular to a kind of Instantaneous Fuel Consumption Monitor calibration system and its demarcation sideMethod.
Background technology
Fuel consumption meter is the important tool of engine test exploitation, measures for engine and complete-vehicle oil consumption, generally makes at presentWith Instantaneous Fuel Consumption Monitor, it can real-time display engine oil consumption, and after Instantaneous Fuel Consumption Monitor uses a period of time, precise decreasing,Need to re-scale.
Prior art demarcation measurement fuel consumption meter precision mainly uses comparison method, as shown in figure 1, opening stop valve 101, fluidFuel consumption meter 102 to be measured is flowed through, standard fuel consumption meter 104 is flowed into by rectifier 103, can be right by the regulation of flow control valve 105Flow velocity is adjusted.The reading of fuel consumption meter 102 and standard fuel consumption meter 104 to be measured is read respectively, is compared, is demarcated.
This fuel consumption meter scaling method of prior art must assure that the precision of standard fuel consumption meter 104 is accurate, due to making for a long timeIt is actually difficult to realize with factor this point such as losses, periodically need to demarcate standard fuel consumption meter 104；And when two oil consumptionWhen instrument measurement result is inconsistent, can not determine be which fuel consumption meter precision distortion, or two fuel consumption meter precision distortions simultaneously,Cause calibration result inaccurate, the final use for influenceing vehicle.
The content of the invention
It is an object of the invention to provide a kind of Instantaneous Fuel Consumption Monitor calibration system and its scaling method, is flowed through by measurement to be measuredThe quality and flow time of fuel consumption meter fuel oil, are calculated the flow of fuel consumption meter to be measured, and the system can directly obtain oil to be measuredThe flow of instrument is consumed, without comparing, demarcation is convenient, simple to operate, avoids the calibrating for standard fuel consumption meter, improves demarcation essenceDegree, ensure the normal use of vehicle.
To achieve these goals, the present invention provides following technical scheme：
A kind of Instantaneous Fuel Consumption Monitor calibration system, including
The quality of fuel consumption meter fuel oil to be measured is flowed through in measuring unit, measurement；
Timing unit, record flow through the time of fuel consumption meter fuel oil to be measured；
Control unit, controls the opening and closing of stop valve, and calculates the flow of fuel consumption meter to be measured；
The measuring unit, the timing unit and the stop valve are connected to described control unit.
Preferably, the measuring unit includes balance.
Preferably, the measuring unit also includes being placed in container of the balance away from counterweight one end, the fuel consumption meter one to be measuredEnd is communicated with oil sump, other end connection jet pipe, and the jet orifice of the jet pipe is relative with the opening of the container；The cut-offValve is between the jet pipe and the fuel consumption meter to be measured.
Preferably, it is additionally provided with voltage stabilizing oil tank between the fuel consumption meter to be measured and the jet pipe.
Preferably, the fuel consumption meter to be measured is also communicated with overflow pipe, and the other end of the overflow pipe stretches into the oil sump.
Preferably, in addition to detection unit, the beat of the balance indicator is detected.
The present invention also provides a kind of Instantaneous Fuel Consumption Monitor calibration system scaling method, including
Step S1：Stop valve is controlled to open, record flows through the time of fuel consumption meter to be measured；
Step S2：Stop valve is controlled to close；
Step S3：The fuel oil quality of fuel consumption meter to be measured is flowed through in measurement；
Step S4：Calculate the flow of fuel consumption meter to be measured.
Preferably, the step S2 includes
Step S21：Whether the pointer of detection balance occurs beat；
Step S22：If treating, beat occurs for the pointer, and control stop valve is closed；Otherwise, control stop valve is persistently opened.
The beneficial effects of the present invention are：
The present invention controls the open and close controlling of stop valve to flow through the fuel oil of fuel consumption meter to be measured, measuring unit inspection by control unitThe fuel oil quality of flow measurement fuel consumption meter excessively to be measured and the time that fuel consumption meter to be measured is flowed through by timing unit record fuel oil, Ran HoutongThe flow that fuel consumption meter to be measured is calculated is crossed, the calibration system can directly obtain the flow of fuel consumption meter to be measured, without comparing, markIt is fixed convenient, it is simple to operate, the calibrating for standard fuel consumption meter is avoided, improves stated accuracy, ensures the normal use of vehicle.
Brief description of the drawings
Fig. 1 is the schematic diagram of prior art Instantaneous Fuel Consumption Monitor calibration system；
Fig. 2 is a kind of installation drawing of embodiment of Instantaneous Fuel Consumption Monitor calibration system provided by the present invention；
Fig. 3 is a kind of system diagram of embodiment of Instantaneous Fuel Consumption Monitor calibration system provided by the present invention；
Fig. 4 is a kind of flow of embodiment of Instantaneous Fuel Consumption Monitor calibration system scaling method provided by the present inventionFigure.
Reference：
In Fig. 1：
101st, stop valve, 102, fuel consumption meter to be measured, 103, rectifier, 104, standard fuel consumption meter, 105, flow control valve；
In Fig. 2-Fig. 4：
201st, oil sump, 202, oil pump, 203, overflow pipe, 204, fuel consumption meter to be measured, 205, voltage stabilizing oil tank, 206, stop valve,207th, flow control valve, 208, jet pipe, 209, laser probe, 210, counterweight, 211, balance, 212, container, 213, control it is singleMember, 214, detection unit, 215, timing unit, 216, measuring unit.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and ExamplesThe present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, notFor limiting the present invention.
Fig. 2-Fig. 4 is refer to, in a kind of embodiment, a kind of Instantaneous Fuel Consumption Monitor demarcation system provided by the present inventionSystem, it is characterised in that including measuring unit 216, the quality of the fuel oil of fuel consumption meter 204 to be measured is flowed through in measurement；Timing unit 215, noteRecord flows through the time of the fuel oil of fuel consumption meter 204 to be measured；Control unit 213, controls the opening and closing of stop valve 206, and calculates oil consumption to be measuredThe flow of instrument 204；Measuring unit 216, timing unit 215 and stop valve 206 are connected to control unit 213.
Above-described embodiment controls the open and close controlling of stop valve 206 to flow through the combustion of fuel consumption meter 204 to be measured by control unit 213Oil, measuring unit 216 detect the fuel oil quality for flowing through fuel consumption meter 204 to be measured and flowed through by the record fuel oil of timing unit 215 and treatedThe time of fuel consumption meter 204 is surveyed, then by the way that the flow of fuel consumption meter 204 to be measured is calculated, the calibration system can directly obtainThe flow of fuel consumption meter 204 to be measured, without comparing, demarcation is convenient, simple to operate, avoids the calibrating for standard fuel consumption meter, improvesStated accuracy, ensure the normal use of vehicle.
Specifically, measuring unit 216 includes balance 211.This kind of metering system measurement accuracy is high and easy to detect.
Measuring unit 216 also includes being placed in container 212 of the balance 211 away from the one end of counterweight 210, fuel consumption meter 204 1 to be measuredEnd is communicated with oil sump 201, other end connection jet pipe 208, and the jet orifice of jet pipe 208 is relative with the opening of container 212, balancePlace counterweight 210 in 211 another side；Stop valve 206 is between jet pipe 208 and fuel consumption meter to be measured 204.The measurement apparatus energyThe fuel oil quality of fuel consumption meter 204 to be measured, convenient operation are flowed through in enough measurements in real time.
Container 212 can be measuring cup as shown in Figure 2, or other bottles or box.
Flow through fuel consumption meter 204 to be measured fuel oil can also first will flow into container 212, then again by balance 211 or itsThe instruments such as its electronic scale measure the quality of fuel oil.
Voltage stabilizing oil tank 205 is additionally provided between fuel consumption meter 204 and jet pipe 208 to be measured.Can by setting up voltage stabilizing oil tank 205Ensure the pressure of whole measuring loop, make fuel flow path more smooth.
Fuel consumption meter 204 to be measured is also communicated with overflow pipe 203, and the other end of overflow pipe 203 stretches into oil sump 201.By setting upOverflow pipe 203 enables unnecessary fuel oil to be back to oil sump 201, reuses, and improves the utilization rate of fuel oil.
Instantaneous Fuel Consumption Monitor calibration system also includes detection unit 214, detects the beat of the pointer of balance 211.Referred to by detectionThe beat of pin, the closing of stop valve 206 is controlled, to reduce artificial interference factor, improve stated accuracy.Detection unit 214 is usualFor laser probe 209 as shown in Figure 2, or other photoelectric detection switch or relay.The beat of certain pointerHuman eye detection can be passed through.
Specifically, Instantaneous Fuel Consumption Monitor calibration system also includes flow control valve 207, and flow control valve 207, which is placed in, to be measured backBetween road, such as stop valve 206 and jet pipe 208.To adjust the fuel flow rate in whole loop.
Oil pump 202 is also associated between fuel consumption meter 204 and oil sump 201 to be measured, is treated with facilitating the fuel oil in oil sump 201 to enterSurvey fuel consumption meter 204.
The invention further relates to a kind of Instantaneous Fuel Consumption Monitor calibration system scaling method, as shown in figure 4, including
Step S1：Control stop valve 206 is opened, and record flows through the time of fuel consumption meter 204 to be measured；
Step S2：Control stop valve 206 is closed；
Step S3：The fuel oil quality of fuel consumption meter 204 to be measured is flowed through in measurement；
Step S4：Calculate the flow of fuel consumption meter 204 to be measured.
Preferably, step S2 includes
Step S21：Whether the pointer of detection balance 211 occurs beat；
Step S22：If beat occurs for pointer, control stop valve 206 is closed；Otherwise, control stop valve 206 is persistently opened.
Control the opening of stop valve 206 or close and realized by above-mentioned control unit 213, record flows through fuel consumption meter to be measured204 time is realized that the fuel oil quality that fuel consumption meter 204 to be measured is flowed through in measurement passes through above-mentioned measuring unit 216 by timing unit 215Realize.
Specifically, stop valve 206 and oil pump 202 are first turned on, the combustion of measuring loop is adjusted by flow control valve 207Oil flow rate, close stop valve 206；The counterweight 210 of preset quality, the control cut-off of control unit 213 are placed in one side of balance 211Valve 206 is opened, and the fuel oil for flowing through fuel consumption meter 204 to be measured flows into container 212 by jet pipe 208, while timing unit 215 startsTiming；Detection unit 214 detect balance 211 pointer whether beat, if beat takes place in pointer, illustrate inflow container 212Fuel oil have equalized to preset quality, control unit 213 controls stop valve 206 to close, and timing unit 215 stops timing, simultaneouslyOil pump 202 is stopped；Control unit 213 calculates the flow of fuel consumption meter 204 to be measured, and Q=m/t, wherein Q are fuel consumption meter to be measured204 flow, m are preset quality, and t is the time for flowing through fuel consumption meter 204 to be measured.
Although the present invention is described with reference to above example, the present invention is not limited to above-described embodiment, andOnly limited by claim, those of ordinary skill in the art easily can modify and change to it, but and without departing fromThe essential idea and scope of the present invention.