CN103185618B - Method for measuring instantaneous oil consumption of electronic control unit pump diesel engine - Google Patents
Method for measuring instantaneous oil consumption of electronic control unit pump diesel engine Download PDFInfo
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- CN103185618B CN103185618B CN201310035478.3A CN201310035478A CN103185618B CN 103185618 B CN103185618 B CN 103185618B CN 201310035478 A CN201310035478 A CN 201310035478A CN 103185618 B CN103185618 B CN 103185618B
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Abstract
The invention discloses a method for measuring instantaneous oil consumption of an electronic control unit pump diesel engine, which comprises the following steps of: obtaining a basic fuel jet pulse width in the speed regulating characteristic by an average rotating speed of the diesel engine and the position of an accelerator pedal, calculating a rotating speed of an oil pump by the average rotating speed of the diesel engine and checking the oil-pump oil supply characteristic of a unit pump by the basic fuel jet pulse width and an average rotating speed of the oil pump so as to obtain current circulating oil supply; and by acquiring a rotating angle of a 6-degree crankshaft of a crankshaft signal panel, calculating a current instantaneous rotating speed of the diesel engine so as to obtain a fundamental quantity of the instantaneous oil consumption, and by acquiring a current fuel oil temperature, carrying out density correction on the fundamental quantity of the instantaneous oil consumption, so that the accurate instantaneous oil consumption of the diesel engine in a current state can be obtained and the information of the accurate instantaneous oil consumption of the diesel engine can help a driver master a current operating state of a vehicle in real time.
Description
Technical field
The present invention relates to Electronic Control for Fuel Injection System of Diesel Engine, particularly relate to a kind of measuring method of Electronic Unit Pump Diesel Engine real-time fuel consumption.
Background technology
Heavy duty commercial car is of many uses, generally adopts diesel motor, and under steam, the influence factor of diesel-fuel consumption is a lot, causes the diesel oil distance travelled of equal number in fuel tank widely different; In the supply system of China's refined oil, bavin oil supplying quantity is difficult to practical requirement amount sometimes, so even there is the situation put on short allowance of diesel oil in certain hour section, thus in actual use, driver is extremely concerned about the relation between fuel tank fuel quantity and continual mileage, realize this function, need the real-time diesel-fuel consumption obtaining vehicle while perception fuel tank fuel quantity, fuel tank fuel quantity can be obtained by liquid level sensor, and the real-time fuel consumption of vehicle then needs a kind of method to calculate.The factor affecting the real-time fuel consumption of commercial car mainly contains following 3 points: 1. the load condition of vehicle, and underloading is widely different with the diesel-fuel consumption of heavy duty; 2. the travel speed of vehicle, the diesel-fuel consumption of urban traffic situation and highway is widely different; 3. commercial car fuel consumption with adopt that to meet the fuel oil injection strategy of the Abgasgesetz of different phase in close relations, in state III stage, due to postponing at medium loading district injection timing, cause the consumption of diesel oil to increase to some extent.Under the prerequisite that vehicle gear is certain, above-mentioned 3 is in fact all determined by the running status of diesel engine, and in other words, the running status of diesel engine determines the diesel-fuel consumption of vehicle.
For the diesel engine adopting Electrocontrolled high-pressure fuel injection system, the correlation parameter of control system directly determines the oil consumption of diesel engine.For Electronic Unit Pump Diesel Engine, the generation of hydraulic oil promotes plunger by the fuel cam of oil pump and produces, belong to pulsating fuel system with high injection pressure, the transient speed of diesel engine determines the speed of cam, and then the movement velocity determining plunger has an impact to distributive value.In actual use, by the break-make of the high-speed electromagnetic valve in electronic control unit oil circuit control, under realizing a certain moment, a certain amount of diesel oil is to the supply in cylinder, and thus, its real-time fuel consumption is relevant with the transient speed of diesel engine primarily of injection extended period, injection timing.By obtaining the real-time fuel consumption of monoblock pump diesel engine, in conjunction with the travel speed of Current vehicle, the real time running fuel consumption of vehicle can be obtained, and then to provide support data for the course continuation mileage of the different heavily loaded commerial vehicle travelled under road conditions and different load state, supplementary can be provided for the operation of driver to vehicle.
Summary of the invention
The object of the invention is to the measuring method proposing the instantaneous oil consumption of a kind of Electronic Unit Pump Diesel Engine, the method can calculate the operating point of diesel engine in its universal characteristic according to the transport condition of vehicle, and obtain the current absolute consumption of diesel oil according to the monoblock pump characteristic of fuel delivery table of prior accurate calibration, again by measuring the transient speed of diesel engine, and then the instantaneous oil consumption of diesel engine can be obtained.For achieving the above object, the present invention proposes a kind of measuring method of Electronic Unit Pump Diesel Engine real-time fuel consumption, gather throttle position switch to obtain the throttle position signal characterizing diesel load; The signal gathering cam shaft for diesel engine can calculate the mean speed obtaining diesel engine; Can calculate in governor control characteristics according to above-mentioned throttle position and diesel engine mean speed signal and spray the extended period; The working speed of monoblock pump can be calculated according to the mean speed of diesel engine; Working speed and the injection extended period calculated of foundation monoblock pump can calculate the single cylinder circulating fuel injection quantity of diesel engine; Single cylinder circulating fuel injection quantity is multiplied by the circulating fuel injection quantity that number of cylinders is Diesel Engine Complete Machine; Gather the working temperature of diesel oil; Diesel oil working temperature according to the employing gathered carries out density revision to the diesel engine cycle work oil mass calculated, and obtains the circulating fuel injection quantity under current diesel fuel temperature; Adopt crankshaft of diesel engine signal to obtain the instantaneous running speed of diesel engine; Revised circulating fuel injection quantity is multiplied by the transient speed of diesel engine, namely obtains.
Particularly, the method comprises the steps:
1) gather mean speed and the accelerator pedal position of diesel engine, by described mean speed and accelerator pedal position, the governor control characteristics of diesel engine calculates and substantially sprays the extended period, obtain basic fuel oil injection pulse width by the governor control characteristics of diesel engine;
2) injection delay angle is at that time calculated by the mean speed of diesel engine;
3) the described basic injection extended period is added with injection delay angle, total oil supply angle under obtaining this operating mode;
4) by total oil supply angle, getting oil pump characteristic by looking into, obtaining the single cylinder circulating fuel injection quantity under current rotating speed;
5) be multiplied by the total number of cylinders of diesel engine by single cylinder circulating fuel injection quantity, obtain the circulation oil mass that diesel engine is total;
6) gather diesel fuel temperature, density revision is carried out to total circulation oil mass, obtains revised circulating fuel injection quantity;
7) gather the transient speed of diesel engine, calculate the instantaneous oil consumption of diesel engine;
8) mean filter is carried out to instantaneous oil consumption, to make the unlikely change of the instantaneous oil changes of diesel engine of calculating too fast;
9) travel speed of collection vehicle, calculates the instantaneous fuel consumption per hundred kilometers of vehicle.
Further, in step 7), by adopting the oil pump characteristic of diesel engine speed regulation characteristic and monoblock pump, and the transient speed of diesel engine, calculate the instantaneous oil consumption of diesel engine.
Further, utilize the instantaneous oil consumption of diesel engine and then obtain the instantaneous oil consumption of car load.
Further, gather all transient speed signals and adopt magnetoelectric sensor to obtain, the minimum sampling period is 6 crank angle degrees.
Further, under certain rotating speed, obtain by total oil spout angle the oil pump characteristic that corresponding circulation oil mass calculates single cylinder circulating fuel injection quantity.
Further, in step 7), by 6 crank angle degrees of collecting crankshaft signal panels, calculate the transient speed that diesel engine is current.
Further, by gathering fuel oil temperature, the fundamental quantity of instantaneous oil consumption being revised, obtains the actual amount of current instantaneous oil consumption.
Further, in step 8), get 10 points and carry out mean filter.
Adopt technical scheme of the present invention, by obtaining the real-time fuel consumption of monoblock pump diesel engine, in conjunction with the travel speed of Current vehicle, the real time running fuel consumption of vehicle can be obtained, and then to provide support data for the course continuation mileage of the different heavily loaded commerial vehicle travelled under road conditions and different load state, supplementary can be provided for the operation of driver to vehicle.
Accompanying drawing explanation
Figure 1 shows that the process flow diagram of a preferred embodiment of the present invention;
Figure 2 shows that the governor control characteristics figure of diesel engine;
Figure 3 shows that fuel feeding lag characteristic figure;
Figure 4 shows that the oil pump performance plot of monoblock pump.
Embodiment
In order to technology contents of the present invention is described better, accompanying drawings is coordinated to be described as follows especially exemplified by instantiation:
Please refer to Fig. 1, Figure 1 shows that the process flow diagram of a preferred embodiment of the present invention.As can be seen from Fig. 1 we, the instantaneous fuel consumption measurement method of Electronic Unit Pump Diesel Engine that the present invention proposes comprises the following steps: step 100: gather throttle position and diesel engine mean speed signal; Step 110: by rotating speed and throttle position, can be so worthwhile that substantially to spray the extended period in the governor control characteristics of diesel engine; Step 120: injection delay angle at that time can be calculated by the mean speed of diesel engine; Step 130: the basic injection extended period is added with injection delay angle, oil supply angle total under obtaining this operating mode; Step 140: by total oil supply angle, gets oil pump characteristic by looking into, and can obtain the single cylinder circulating fuel injection quantity under current rotating speed; Step 150: single cylinder circulating fuel injection quantity is multiplied by the total number of cylinders of diesel engine, obtains the circulation oil mass that diesel engine is total; Step 160: gather diesel fuel temperature at that time, density revision is carried out to total circulation oil mass, obtains revised circulating fuel injection quantity; Step 170: the transient speed gathering diesel engine, can obtain the instantaneous oil consumption of diesel engine; Step 180: the mean filter carrying out 10 points, makes the unlikely change of the instantaneous oil consumption of diesel engine of calculating too fast; Step 190: the travel speed of collection vehicle, then can obtain the instantaneous fuel consumption per hundred kilometers of vehicle.
Please refer to Fig. 2 again, Figure 2 shows that the diesel engine speed regulation characteristic schematic diagram of a preferred embodiment of the present invention.
Governor control characteristics is the set of diesel engine running operating point, is made up of the curve of transverse axis to be rotating speed and Z-axis be many different rotating speeds substantially spraying the extended period;
Illustrated governor control characteristics is two-stage governor control characteristics, and idling speed is 600rpm, and calibration point rotating speed is 2300rpm;
Under different rotating speeds and throttle position (load), obtain the basic injection extended period, be 25 crank angle degrees to the maximum.
Please refer to Fig. 3 again, Figure 3 shows that the electronically controlled unit pump injection delay angle characteristic schematic diagram of a preferred embodiment of the present invention.
Electronically controlled unit pump delay angle characteristic represents from fuel injection signal to be given in cylinder the delay having fuel oil to spray;
Delay-angle is a parameter changed with diesel engine speed change, and have nothing to do with diesel load, its linear module is crank angle;
In this example, the scope of delay-angle is 0-12.5 crank angle degrees, and as under 1000rpm, delay-angle is 6 crank angle degrees, and its implication is the spraying fire pulsewidth for 10 degree, and actual effectively section is 4 degree, and the delay angle of 6 degree is machinery-electricity-liquid loss.
Please refer to Fig. 4 again, Figure 4 shows that the electronically controlled unit pump oil pump characteristic schematic diagram of a preferred embodiment of the present invention.
Electronically controlled unit pump oil pump characteristic represents: under certain rotating speed, the relation of injection pulse width (crankshaft angles) and circulating fuel injection quantity;
In the present embodiment, injection pulse width and circulating fuel injection quantity present linear relationship, and it doesn't matter with injection advance angle, and mainly injection cam molded line is that constant speed cam causes;
In the present embodiment, the fuel delivery per cycle of oil pump is 20-130mg/cyl.
The real-time fuel consumption of Electronic Unit Pump Diesel Engine can be obtained by following calculation procedure:
Qb=f(n,Acc)
Qd=g(n)
Qa=Qb+Qd
Fcyl=h(n,Qa)
Fa=i×Fcyl
Fatc=Fa×ρtf/ρe
Qt(j)=Fatc×n(j)/(2×1000×60)
Qtf100=Qtf×v
Wherein Qb is the basic fuel injection extended period, f function is the diesel engine speed regulation characteristic shown in Fig. 2, n is the mean speed of diesel engine, usually obtained by the magnetoelectric transducer collection be contained on bent axle or cam, sampling period is close with the intercycle time, what gather is the mean speed of diesel engine, and Acc is accelerator pedal position, obtains this signal by pot; Qd is fuel feeding delay angle, and g function is the electronically controlled unit pump injection delay angle characteristic shown in Fig. 3; Qa is total oil supply angle; Fcyl is single cylinder fuel delivery per cycle, and h function is the electronically controlled unit pump oil pump characteristic shown in Fig. 4; Fa is total fuel delivery per cycle, and i is number of cylinders; Fatc is the fuel delivery per cycle through density revision, and ρ tf is the fuel density at current fuel temperature, and ρ e is the diesel oil density under environment temperature; The instantaneous oil consumption that Qt (j) is the j moment, n (j) is the transient speed in j moment, this rotating speed is measured by the magnetoelectric transducer on bent axle, may diminish to 6 degree of speeds of crankshaft measuring period, so the fluctuation of speed in the diesel engine cycle of reflection, calculate most important to instantaneous oil consumption; Qtf is the result of the mean filter of 10 instantaneous oil consumption points; Qtf100 is instantaneous fuel consumption per hundred kilometers, and v is the speed of a motor vehicle, usually by being contained in Hall on wheel or magnetoelectric transducer obtains, because the inertia of vehicle is comparatively large, so the instantaneous oil consumption of vehicle is mainly reflected on the instantaneous oil changes of diesel engine.
The real-time condition of the present invention is: may be used for all automobile-used operating mode beyond idling, theoretical oil consumption during idling is zero.
In sum, the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine that the present invention proposes, first throttle position and diesel engine mean speed signal is gathered, on this basis can be so worthwhile that substantially to spray the extended period in the governor control characteristics of diesel engine, injection delay angle at that time can be calculated, by substantially spraying the extended period and injection delay angle can obtain total oil supply angle by the injection delay characteristic of monoblock pump; By total oil supply angle, getting oil pump characteristic by looking into, single cylinder circulating fuel injection quantity under current rotating speed and the total circulation oil mass of diesel engine can be obtained; The diesel fuel temperature gathered at that time carries out density revision, obtains revised circulating fuel injection quantity; Gather the transient speed of diesel engine simultaneously, the instantaneous oil consumption of diesel engine can be obtained; Carry out the mean filter of 10 points, make the unlikely change of the instantaneous oil consumption of diesel engine of calculating too fast; The travel speed of last collection vehicle, then can obtain the instantaneous fuel consumption per hundred kilometers of vehicle.
Although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (8)
1. a measuring method for the instantaneous oil consumption of Electronic Unit Pump Diesel Engine, it is characterized in that, the method comprises the steps:
1) gather mean speed and the accelerator pedal position of diesel engine, by described mean speed and accelerator pedal position, the governor control characteristics of diesel engine calculates and substantially sprays the extended period, obtain basic fuel oil injection pulse width by the governor control characteristics of diesel engine;
2) injection delay angle is at that time calculated by the mean speed of diesel engine;
3) the described basic injection extended period is added with injection delay angle, total oil supply angle under obtaining current operating mode;
4) by total oil supply angle, getting oil pump characteristic by looking into, obtaining the single cylinder circulating fuel injection quantity under current rotating speed;
5) be multiplied by the total number of cylinders of diesel engine by single cylinder circulating fuel injection quantity, obtain the circulation oil mass that diesel engine is total;
6) gather diesel fuel temperature, density revision is carried out to total circulation oil mass, obtains revised circulating fuel injection quantity;
7) gather the transient speed of diesel engine, calculate the instantaneous oil consumption of diesel engine;
8) mean filter is carried out to instantaneous oil consumption, to make the unlikely change of the instantaneous oil changes of diesel engine of calculating too fast;
9) travel speed of collection vehicle, calculates the instantaneous fuel consumption per hundred kilometers of vehicle.
2. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, base is characterised in that, in step 7), by adopting the oil pump characteristic of diesel engine speed regulation characteristic and monoblock pump, and the transient speed of diesel engine, calculate the instantaneous oil consumption of diesel engine.
3. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, is characterized in that, utilizes the instantaneous oil consumption of diesel engine and then obtains the instantaneous oil consumption of car load.
4. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, is characterized in that, gather all transient speed signals and adopt magnetoelectric sensor to obtain, the minimum sampling period is 6 crank angle degrees.
5. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, is characterized in that, under certain rotating speed, obtain the oil pump characteristic that corresponding circulation oil mass calculates single cylinder circulating fuel injection quantity by total oil spout angle.
6. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, is characterized in that, in step 7), by 6 crank angle degrees of collecting crankshaft signal panels, calculate the transient speed that diesel engine is current.
7. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, is characterized in that, by gathering fuel oil temperature, revising, obtain the actual amount of current instantaneous oil consumption to the fundamental quantity of instantaneous oil consumption.
8. the measuring method of the instantaneous oil consumption of Electronic Unit Pump Diesel Engine as claimed in claim 1, is characterized in that, in step 8), get 10 points and carry out mean filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310035478.3A CN103185618B (en) | 2013-01-30 | 2013-01-30 | Method for measuring instantaneous oil consumption of electronic control unit pump diesel engine |
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| CN201310035478.3A CN103185618B (en) | 2013-01-30 | 2013-01-30 | Method for measuring instantaneous oil consumption of electronic control unit pump diesel engine |
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| CN103185618B true CN103185618B (en) | 2014-12-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103883415A (en) * | 2014-02-20 | 2014-06-25 | 中国北方发动机研究所(天津) | Method for measuring and predicting instantaneous rotational speed of crankshaft |
| CN104590526B (en) * | 2014-12-09 | 2017-07-07 | 倪杰峰 | The control method and device of ship energy saving navigation |
| CN104590529B (en) * | 2014-12-09 | 2017-06-30 | 倪杰峰 | The control method and device of ship energy saving navigation |
| CN108731756A (en) * | 2017-04-17 | 2018-11-02 | 陕西重型汽车有限公司 | The real-time gas consumption detection method of CNG fuel gas vehicles and its device |
| CN107687943B (en) * | 2017-07-27 | 2019-07-09 | 浙江工业大学 | A kind of crankshaft of cooler compressor pumping ability evaluating apparatus and its evaluation method |
| CN113482791A (en) * | 2021-08-20 | 2021-10-08 | 中国人民解放军陆军装甲兵学院 | Diesel engine power estimation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2104157A (en) * | 1981-07-17 | 1983-03-02 | Pierburg Gmbh & Co Kg | A method of and an arrangement for determining injected quantities of fuel |
| US4444047A (en) * | 1979-06-29 | 1984-04-24 | Vdo Adolf Schindling A.G. | Apparatus for determining the fuel consumption of injection internal combustion engines |
| CN2459626Y (en) * | 2000-12-30 | 2001-11-14 | 上海内燃机研究所 | Vehicle fuel consumption tester |
| CN101900590A (en) * | 2010-06-29 | 2010-12-01 | 中国兵器装备集团摩托车检测技术研究所 | Volumetric rack electronic injection fuel consumption instrument |
-
2013
- 2013-01-30 CN CN201310035478.3A patent/CN103185618B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4444047A (en) * | 1979-06-29 | 1984-04-24 | Vdo Adolf Schindling A.G. | Apparatus for determining the fuel consumption of injection internal combustion engines |
| GB2104157A (en) * | 1981-07-17 | 1983-03-02 | Pierburg Gmbh & Co Kg | A method of and an arrangement for determining injected quantities of fuel |
| CN2459626Y (en) * | 2000-12-30 | 2001-11-14 | 上海内燃机研究所 | Vehicle fuel consumption tester |
| CN101900590A (en) * | 2010-06-29 | 2010-12-01 | 中国兵器装备集团摩托车检测技术研究所 | Volumetric rack electronic injection fuel consumption instrument |
Non-Patent Citations (1)
| Title |
|---|
| 柴油机转速传感器故障诊断及其失效"跛行"控制;安晓辉,刘波澜,张付军,崔涛;《车用发动机》;20100831(第4期);56-60 * |
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