CN101738233B - Method for calculating average fuel consumption, remaining fuel and driving range - Google Patents
Method for calculating average fuel consumption, remaining fuel and driving range Download PDFInfo
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Abstract
The invention mainly discloses a method and a device for calculating average fuel consumption, remaining fuel and driving range. The average fuel consumption S can be worked out according to both the acquired drop number N of the fuel sprayed by a fuel spray nozzle, pulse number P of a vehicle speed signal and pulse number ppk of per kilometer vehicle speed signal and the volume SN represented by each drop of fuel. The remaining fuel deltaS can be worked out by subtracting the total amount NXSN of consumed fuel sprayed by a fuel sprayer from the total amount S of oil in an oil tank after ignition. The driving range can be worked out by dividing the remaining fuel deltaS by the average fuel consumption S. The method can help a driver to obtain accurate information on the average fuel consumption, remaining fuel and driving range of an automobile, get an idea of the running condition of the automobile and the consumption condition of the fuel and select a driving mode consuming the lest fuel, thereby saving fuel consumption and protecting environment.
Description
Technical field
The present invention relates to the car accessories technical field, particularly about calculating the method for average fuel consumption and Fuel Oil Remaining mileage.
Background technology
At present, Oiltank structure is flat short structure in the automobile industry, and tank sensor adopts Floater Structure, the certain oil mass of resistance value representative of output.The fuel tank of this structure is when vehicle is positioned at different road surface and when being in different vibrating states, even fuel tank fuel quantity is identical, the resistance of tank sensor output also can have nothing in common with each other.
Usually, calculate the more rough measuring method of the general employing of average fuel consumption in the industry, add one case oil earlier, this case oil of driving to have consumed then writes down the mileage number that travels simultaneously, measures average fuel consumption thus.This metering method is very inaccurate, and its inaccuracy is to test road section selected, driver's personal experience etc.
As everyone knows, automobile fuel consumption and vehicle ' road conditions and driver's driving custom has much relations.For example, drive at highway, because less start and stop, its car load average fuel consumption is just less than city road.In addition, the individual average fuel consumption of driving of user can't be added up fully, can not reflect genuine property.
Also have puzzlement problem for a long time, that judges the Fuel Oil Remaining mileage exactly.Existing method then is by observing combination instrument fuel gauge pointer position, according to driver's experience, estimating the mileage that can travel.
Though now the part automobile instrument has the function that demonstration can distance travelled in the industry, this function all is based on the basis of above-mentioned measurement tankage and calculates.The tank sensor of measuring tankage is a Floater Structure, be subjected to vehicle climb and fall and vibration influence serious, can't accurately calculate the predicted value of mileage more, the direct result that causes is that the predicted value in vehicle driving up highway section and descending highway section differs greatly, substantially impracticable, reliability is low, and Customer Complaint is very big.
The present invention is on the basis of correlation techniques such as existing automotive engineering, electrical technology, micro-computer technology, by technological innovation and utilization, at the defective of above-mentioned existence, provides a kind of method and device that calculates average fuel consumption and Fuel Oil Remaining mileage.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method of calculating average fuel consumption and Fuel Oil Remaining mileage, be by continuing the collection that adds up, accurately calculate the average fuel consumption value, and on the basis of average fuel consumption value, accurate, safe prediction Fuel Oil Remaining mileage.
To achieve these goals, technical scheme of the present invention is as follows:
Calculate the method for average fuel consumption and Fuel Oil Remaining mileage
1. average fuel consumption
Automobile is gathered the pulse signal of ECU engine fuel injector work in the process of moving, i.e. dripping of atomizer oil spout counted, and is designated as N; The pick-up transducers vehicle speed signal, promptly the pulse number of sensor vehicle speed signal is designated as P; Above-mentioned data are brought in the following average fuel consumption S computing formula (),
In the formula, S
N---the capacity of every oil dripping with the unit of being upgraded to, is an automobile ECU engine fuel injector parameter,
The pulse number that ppk---vehicle speed sensor is every kilometer is the parameter of car speed sensor;
2. Fuel Oil Remaining mileage
The last time is refueled the total oil mass S of rear fuel tank deduct the oil consumption total amount N * S of fuel injector ejection
N, obtain Fuel Oil Remaining Δ S, above-mentioned data are brought in the following Fuel Oil Remaining mileage L computing formula,
The present invention can also be further perfect:
When operating range was less than or equal to 500m behind automobile starting, the result of calculation of average fuel consumption S and Fuel Oil Remaining mileage L did not show in automobile instrument panel; When operating range was greater than 500m behind the automobile starting, the result of calculation of average fuel consumption S and Fuel Oil Remaining mileage L showed in automobile instrument panel.Like this, when automobile starting, go back out of true in the calculating, fluctuation ratio is bigger, the fluctuating error the unloading phase of the elimination thus.
Add the average fuel consumption initial value in average fuel consumption S computing formula, by sixteen operating mode road test gained, 10 kilometers fuel consume 0.7L bring in the average fuel consumption S computing formula (two) in view of the above,
Calculate S, unit is for rising.Molecule denominator in the formula (two) has all added initial value, the fluctuating error behind the elimination automobile starting in preceding 10 kilometer range.
When automobile fuel consumption increases, but when not having the speed of a motor vehicle, the oil consumption of increase counts among the average fuel consumption S.This is to consider for automobile is stopped working but is in the state of parking.
In the process of calculating the Fuel Oil Remaining mileage, each light-off period is carried out fueling state judge; After the igniting, when the doughnut rotating speed changes greater than 200, detect current fuel tank fuel quantity feul_level, if feul_level 〉=42L, then upgrading the total oil mass S of fuel tank is the oil mass feul_level of current detection; If feul_level＜42L, when preceding oil mass was greater than 5L but the feul_level ratio is lighted a fire, then upgrading the total oil mass S of fuel tank was the oil mass feul_level-0.5 of current detection.
In the process of calculating the Fuel Oil Remaining mileage, eliminate automobile bumpiness and the error that causes; As the result of calculation L＞43L that calculates the Fuel Oil Remaining mileage, and the fuel tank fuel quantity feul_level 〉=43.5L of current detection, continue 10 seconds, then keep display result; As the result of calculation L＞43L that calculates the Fuel Oil Remaining mileage, but do not satisfy the fuel tank fuel quantity feul_level 〉=43.5L of current detection, continue 10 seconds these conditions, then the result of update displayed is result of calculation L-4.
Fuel Oil Remaining mileage display frequency is renewal in per 10 seconds 1 time, and the Fuel Oil Remaining mileage difference of real surplus oil mass mileage and demonstration is A, for the numerical value generation saltus step that prevents to show, does following decision operation:
When A≤1, do not upgrade;
When 1＜A≤5, upgrade 1 kilometer at every turn;
When 5＜A≤10, upgrade 2 kilometers at every turn;
When 10＜A≤15, upgrade 3 kilometers at every turn;
When 15＜A≤20, upgrade 4 kilometers at every turn;
When 25＜A≤30, upgrade 5 kilometers at every turn;
When 30＜A≤40, upgrade 6 kilometers at every turn;
When 40＜A≤50, upgrade 7 kilometers at every turn;
When 50＜A≤60, upgrade 10 kilometers at every turn;
When 60＜A≤80, upgrade 20 kilometers at every turn;
When 80＜A≤100, upgrade 30 kilometers at every turn;
When A＞100, upgrade 40 kilometers at every turn.
Adopt technical scheme of the present invention, the driver can obtain automotive average fuel consumption and safe Fuel Oil Remaining mileage information accurately, understand the travel conditions of automobile and the consumption of fuel oil, and can be by adjusting driving habits, select the most fuel-efficient mode of travelling, the mileage number that can also clearly travel, thus reach the saving fuel consume, also help environmental protection simultaneously.The present invention is trying through number wheel road, and effect is remarkable.
Description of drawings
Fig. 1 is the system construction drawing of preferred embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, be elaborated again with preferred embodiment of the present invention.
System architecture in the present embodiment comprises signal acquisition circuit 1, signal pre-processing circuit 2, single-chip microcomputer treatment circuit 3 and display circuit 4 as shown in Figure 1.
Wherein, signal acquisition circuit 1 comprises atomizer signal acquisition circuit 11, vehicle speed sensor signal acquisition circuit 12.On the electrode or the signal output terminal of fuel injector work of atomizer signal acquisition circuit 11 by being connected to one or more engine fuel injectors, gather the pulse signal of atomizer, on behalf of the oil spout of atomizer, number of pulse signals drip several N.The output current of the pulse signal in the present embodiment is 50mA, output voltage V
P-pBe 12V.An oil dripping is represented in each pulse, and the oil mass of every oil dripping is 36 μ L.This pulse signal maximum output is 500 pulse/sec, is converted into oil mass and is 64.8L/ hour; Minimum output quantity is 4 pulse/sec, promptly 0.5184L/ hour.Vehicle speed sensor signal acquisition circuit 12 by being connected to the signal output part of vehicle speed sensor, being gathered the signal pulse of vehicle speed sensor and is counted P.
Signal pre-processing circuit 2 comprises fuel injector signal pre-processing circuit 21 and vehicle speed sensor pre-process circuit 22.Wherein the fuel injector signal pre-processing circuit 21, to the signal that fuel injector signal acquisition circuit 11 is sent here isolate, processing such as amplification, filtering, finally be treated as the discernible pulse signal of single-chip microcomputer.Vehicle speed sensor pre-process circuit 22, under the constant situation of the original frequency of holding signal and pulsewidth, processing such as the signal that vehicle speed sensor signal acquisition circuit 12 is delivered to amplifies, filtering finally are treated as the discernible pulse signal of single-chip microcomputer.
Single-chip microcomputer treatment circuit 3 is made up of single-chip microcomputer, digital circuit component and electronic component, is connected with the signal pre-processing circuit output terminal, and signal is provided with, calculates.At last, by display circuit 4 operation result is presented on the panel board with digital form.
Computing method among the present invention are as follows:
One, about average fuel consumption S
1, indication range is set to 0.1-25.0L/100km in the panel board.
2, the renewal frequency of Xian Shiing is per 10 seconds 1 time.
When 3, average fuel consumption does not exist, show "--.-L/100km ".
4, behind the automotive ignition, begin to calculate average fuel consumption S.
5, adopt formula () to calculate average fuel consumption S:
In the formula, S
N---the capacity of every oil dripping with the unit of being upgraded to, is an automobile ECU engine fuel injector parameter, S in the present embodiment
N=36 μ L; The pulse number that ppk---vehicle speed sensor is every kilometer is the parameter of car speed sensor, also is a constant.
6,
If AFE_Distance＜0.5km, show in the panel board "--.-L/100km ".
7, as if 0.5km≤AFE_Distance＜10km, average fuel consumption S obtains by formula (two) corrected Calculation
8, the oil consumption during the no speed of a motor vehicle counts among the average fuel consumption S.
9, reset:---after the panel board power down, above-mentioned all data zero clearings;
---often by after the reset button (greater than 2 seconds), above-mentioned all data zero clearings.
Two, about the Fuel Oil Remaining mileage
1, indication range is set to 50-999km in the panel board.
2, the renewal frequency of Xian Shiing is per 10 seconds 1 time.
3, the average fuel consumption S that obtains based on aforementioned calculation, Fuel Oil Remaining mileage L obtains by formula (three):
In the formula, Δ S deducts the oil consumption total amount N * S of fuel injector ejection for the total oil mass S of igniting rear fuel tank
NCalculate and obtain.
4, after the igniting, when the doughnut rotating speed changes greater than 200, detect current fuel tank fuel quantity feul_level, if feul_level 〉=42L, then upgrading the total oil mass S of fuel tank is the oil mass feul_level of current detection; If feul_level＜42L, when preceding oil mass was greater than 5L but the feul_level ratio is lighted a fire, then upgrading the total oil mass S of fuel tank was the oil mass feul_level-0.5 of current detection.This is each light-off period to be carried out fueling state judge.
5, as the result of calculation L＞43L that calculates the Fuel Oil Remaining mileage, and the fuel tank fuel quantity feul_level 〉=43.5L of current detection, continue 10 seconds, then keep display result; As the result of calculation L＞43L that calculates the Fuel Oil Remaining mileage, but do not satisfy the fuel tank fuel quantity feul_level 〉=43.5L of current detection, continue 10 seconds these conditions, then the result of update displayed is result of calculation L-4.This is to eliminate Uneven road and the fuel tank fuel quantity output error that causes.
6, the Fuel Oil Remaining mileage difference of real surplus oil mass mileage and demonstration is A, when A≤1, does not upgrade the Fuel Oil Remaining mileage that panel board shows;
When 1＜A≤5, upgrade 1 kilometer at every turn;
When 5＜A≤10, upgrade 2 kilometers at every turn;
When 10＜A≤15, upgrade 3 kilometers at every turn;
When 15＜A≤20, upgrade 4 kilometers at every turn;
When 25＜A≤30, upgrade 5 kilometers at every turn;
When 30＜A≤40, upgrade 6 kilometers at every turn;
When 40＜A≤50, upgrade 7 kilometers at every turn;
When 50＜A≤60, upgrade 10 kilometers at every turn;
When 60＜A≤80, upgrade 20 kilometers at every turn;
When 80＜A≤100, upgrade 30 kilometers at every turn;
When A＞100, upgrade 40 kilometers at every turn.
The foregoing description only be used to explain the present invention design, but not to the qualification of rights protection of the present invention allly utilizes this design that it is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.
Claims (6)
1. calculate the method for average fuel consumption and Fuel Oil Remaining mileage, it is characterized in that:
1. average fuel consumption
Behind the automotive ignition, gather the pulse signal of ECU engine fuel injector work, i.e. dripping of atomizer oil spout counted, and is designated as N; The pick-up transducers vehicle speed signal, promptly the pulse number of sensor vehicle speed signal is designated as P; Bring above-mentioned data into following average fuel consumption
In the computing formula (),
In the formula, S
N---the capacity of every oil dripping with the unit of being upgraded to, is an automobile ECU engine fuel injector parameter,
The pulse number that ppk---vehicle speed sensor is every kilometer is the parameter of car speed sensor;
2. Fuel Oil Remaining mileage
The total oil mass S of igniting rear fuel tank is deducted the oil consumption total amount N * S of fuel injector ejection
N, obtain Fuel Oil Remaining Δ S, above-mentioned data are brought in the following Fuel Oil Remaining mileage L computing formula,
When 3. operating range is less than or equal to 500m behind automobile starting, average fuel consumption
In automobile instrument panel, do not show with the result of calculation of Fuel Oil Remaining mileage L; When operating range is greater than 500m behind the automobile starting, average fuel consumption
Show in automobile instrument panel with the result of calculation of Fuel Oil Remaining mileage L.
2. calculate the method for average fuel consumption and Fuel Oil Remaining mileage according to claim 1, it is characterized in that: at average fuel consumption
Add the average fuel consumption initial value in the computing formula, by sixteen operating mode road test gained, 10 kilometers fuel consume 0.7L bring average fuel consumption in view of the above into
In the computing formula (two),
Calculate
Unit is for rising.
3. as the method for calculating average fuel consumption as described in the claim 2 and Fuel Oil Remaining mileage, it is characterized in that: when automobile fuel consumption increases, but when not having the speed of a motor vehicle, the oil consumption of increase counts average fuel consumption
In.
4. as the method for calculating average fuel consumption as described in the claim 3 and Fuel Oil Remaining mileage, it is characterized in that: in the process of calculating the Fuel Oil Remaining mileage, each light-off period is carried out fueling state judge; After the igniting, when the doughnut rotating speed changes greater than 200, detect current fuel tank fuel quantity feul_level, if feul_level 〉=42L, then upgrading the total oil mass S of fuel tank is the oil mass feul_level of current detection; If feul_level＜42L, when preceding oil mass was greater than 5L but the feul_level ratio is lighted a fire, then upgrading the total oil mass S of fuel tank was the oil mass feul_level-0.5 of current detection.
5. as the method for calculating average fuel consumption as described in the claim 4 and Fuel Oil Remaining mileage, it is characterized in that: in the process of calculating the Fuel Oil Remaining mileage, eliminate automobile bumpiness and the error that causes; As the result of calculation L＞43L that calculates the Fuel Oil Remaining mileage, and the fuel tank fuel quantity feul_level 〉=43.5L of current detection, continue 10 seconds, then keep display result; As the result of calculation L＞43L that calculates the Fuel Oil Remaining mileage, but do not satisfy the fuel tank fuel quantity feul_level 〉=43.5L of current detection, continue 10 seconds these conditions, then the result of update displayed is result of calculation L-4.
6. as the method for calculating average fuel consumption as described in the claim 5 and Fuel Oil Remaining mileage, it is characterized in that: display frequency is to upgrade 1 time in per 10 seconds, and the Fuel Oil Remaining mileage difference of real surplus oil mass mileage and demonstration is A,
When A≤1, do not upgrade;
When 1＜A≤5, upgrade 1 kilometer at every turn;
When 5＜A≤10, upgrade 2 kilometers at every turn;
When 10＜A≤15, upgrade 3 kilometers at every turn;
When 15＜A≤20, upgrade 4 kilometers at every turn;
When 25＜A≤30, upgrade 5 kilometers at every turn;
When 30＜A≤40, upgrade 6 kilometers at every turn;
When 40＜A≤50, upgrade 7 kilometers at every turn;
When 50＜A≤60, upgrade 10 kilometers at every turn;
When 60＜A≤80, upgrade 20 kilometers at every turn;
When 80＜A≤100, upgrade 30 kilometers at every turn;
When A＞100, upgrade 40 kilometers at every turn.
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| CN108007518A (en) * | 2017-11-30 | 2018-05-08 | 浙江三装备有限公司 | Oil consumption computing device and method and engineering machinery |
| CN109100493A (en) * | 2018-08-21 | 2018-12-28 | 上海博泰悦臻网络技术服务有限公司 | oil quality monitoring method and server |
| CN109029629A (en) * | 2018-09-28 | 2018-12-18 | 大陆汽车车身电子系统（芜湖）有限公司 | A method of calculating fuel remaining |
| CN111238600B (en) * | 2020-02-12 | 2022-03-25 | 五羊—本田摩托（广州）有限公司 | Vehicle remaining oil amount detection method and device, vehicle and storage medium |
| CN111811609B (en) * | 2020-07-01 | 2022-07-22 | 中科灵动航空科技成都有限公司 | Aircraft oil mass detection method and system |
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