CN1576804A - Method for measuring vehicle fuel consumption and apparatus thereof - Google Patents
Method for measuring vehicle fuel consumption and apparatus thereof Download PDFInfo
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- CN1576804A CN1576804A CN 03139937 CN03139937A CN1576804A CN 1576804 A CN1576804 A CN 1576804A CN 03139937 CN03139937 CN 03139937 CN 03139937 A CN03139937 A CN 03139937A CN 1576804 A CN1576804 A CN 1576804A
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Abstract
The present invention is fuel oil consumption measuring method and apparatus for automobile with electronic fuel injecting engine. The fuel injector controlling signal and speed sensor signal in automobile are acquired and the fuel injector opening time and automobile speed are measured and calculated accurately in the microcomputer, so as to obtain the fuel oil consumption and display the three automobile fuel oil consumption indexes, including instantaneous fuel oil consumption, average fuel oil consumption and accumulated fuel oil consumption. The present invention makes it possible for the driver to regulate automobile operation mode, select fuel oil saving running mode, save fuel oil and reduce environmental pollution.
Description
Technical field
The present invention relates to a kind of measuring method and device thereof of automotive oil consumption, belong to automobile technical field.
Background technology
Modern motor car engine a large portion is used Electronic Fuel Injection (EFI) control system (being called for short EFI, ECU or EGI system), it is to be control center with an electronic-controlled installation, utilization is installed in the various sensors on the engine different parts, record the various running parameters of engine, according to the control program of in computer, setting, by the control fuel injector, accurately control distributive value, make engine under various operating modes, can both obtain the combination gas of optium concentration.
As shown in Figure 1, the injection pressure of Electronic Fuel Injection (EFI) control system is provided by electric fuel punp, and the fuel oil in the fuel tank after the fuel filter filtration, is delivered to the branch oil distributing pipe of engine by electric fuel punp sucking-off and pressurization.Divide oil distributing pipe to communicate with fuel injector on being installed in each cylinder inlet manifold.Fuel injector is a kind of solenoid valve, is controlled by computer.Solenoid valve is opened during energising, and the pressure fuel oil sprays in the inlet manifold with vaporific, with air mixed, is sucked into cylinder in suction stroke.Divide the end of oil distributing pipe that fuel pressure regulator is housed, be used for adjusting the pressure of branch oil distributing pipe intermediate fuel oil.Fuel pressure regulator is installed in an end of fuel feed pump, links to each other with inlet manifold behind the air throttle by vacuum hose, and its function is to make system pressure and intake depression keep constant compression force poor.Make fuel pressure keep certain certain value, unnecessary fuel oil returns fuel tank from the scavenge pipe on the fuel pressure regulator.
Air inflow is controlled by accelerator pedal control node valve by the driver, and computer is controlled each cylinder injector according to admission pressure and engine speed, controls distributive value by the duration of controlling each oil spout.Injection duration is longer, and distributive value is just bigger.The duration of general each oil spout is 2～10 milliseconds.
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, realize measurement to total oil consumption, instantaneous oil consumption and three oil consumption indexs of average fuel consumption of the automobile that adopts the above electronic fuel injection engine.
Summary of the invention
The oil consumption of automobile is to weigh a very important technical indicator of automotive performance, but most automobiles all are not equipped with the instrument that shows oil consumption, the high-grade automobile of part has the function that shows oil consumption, but all exist the video data renewal speed slower, video data lags behind the problem of actual conditions.
The invention provides a kind of method and device thereof for the automobile measured automobiles oil consumption that adopts Electronic Fuel Injection (EFI) control system engine.
Principle of work of the present invention is: because the maintenance of the pressure differential of the pressure of fuel system and intake depression is constant, length and distributive value that fuel injector is opened the time are directly proportional.The relation of each distributive value and injector opening time length can illustrate by following formula:
Sn＝Tn·K
n＝(1，2，3，4，......n)
Wherein, Sn is a distributive value;
Tn is open-interval length of fuel injector;
K is a parameter, is decided by specification, the system oil pressure of fuel injector;
Because the K value of every car is well-determined, the measured automobiles engine fuel injector is the time span (T) of unlatching at every turn, and each opening time length is added up (∑ T), by calculating the oil consumption (∑ S) that just can measure automobile indirectly.Formula is as follows:
∑S＝S1+S2+S3+…+Sn＝(T1+T2+T3+…+Tn)·K＝∑T·K
Therefore, by measuring the opening time of engine fuel injector, just can realize measurement to the total oil consumption of automobile.
In addition, except realizing measured automobiles accumulative total oil consumption, measure, can obtain automobile driving speed and distance travelled by signal to automotive speed sensor, and by with the comparison operation of automotive oil consumption, can obtain the instantaneous oil consumption and the average fuel consumption of automobile.
More than, the total oil consumption of automobile is meant: by reset switch, begin after this measurement mechanism resetted to calculate the fuel consume total amount of automobile.
The average oil consumption is meant: begin to calculate the ratio of the total amount of vehicle fuel consume and the total kilometrage that travels after the reset switch that passes through resets.
Instantaneous oil consumption is meant: automobile in the unit interval, the consumption of fuel oil and the ratio of operating range.
Because with per 100 kilometer oil consumptions how much weigh usually by the unit of being upgraded to for the size of automotive oil consumption now, is unit so instantaneous oil consumption of the above automobile and average oil consumption all are scaled to rise/hundred kilometers.
Technical solution of the present invention is as follows:
A kind of method that is used for the total oil consumption of measured automobiles, average oil consumption and instantaneous oil consumption is characterized in that this method comprises the steps:
(1) pulse signal of acquisition controlling oil nozzle of car engine work;
(2) signal of collection automotive speed sensor;
(3) pulsewidth of the pulse signal of measurement control engine fuel injector work is to measure the each time span of opening of engine fuel injector;
(4) tired total to the opening time, obtain the time length overall (∑ T) that engine fuel injector is opened;
(5), be scaled the total fuel consumption of engine (∑ S) by proportional relationship the length overall of injector opening time (∑ T); Reduction coefficient K method by experiment records;
(6) signal of measuring speed sensor obtains the travel speed of automobile and the numerical value of total kilometres;
(7) length overall of the injector opening time in a period of time (∑ T) is converted into total fuel consumption (∑ S) in a period of time, and relatively calculates, obtain the numerical value (being the average oil consumption) of automotive average fuel consumption with vehicle driving mileage in this time period;
(8) injector opening time in the unit interval, the automobile driving speed that records with signal by automotive speed sensor relatively calculates, and obtains instantaneous oil consumption;
(9) how much the unit of being upgraded to is weighed because the size of present automotive oil consumption is usually with per 100 kilometers oil consumptions, so instantaneous oil consumption of the above automobile and average oil consumption all are scaled to rise/hundred kilometers units.
(10) by display circuit operation result is shown with digital form;
(11) determining of K value:
1. measured automobiles injector opening time (∑ T) by experiment, and the actual fuel injection amount of automobile fuel injector (∑ S);
2. because of ∑ S=∑ TK, so K=∑ S/ ∑ T, the numerical value that records by the calculating test can obtain the K value;
The device of realizing above-mentioned vehicle fuel consume measuring method comprises: signal acquisition circuit, signal pre-processing circuit, micro computer treatment circuit, display circuit.
Wherein signal acquisition circuit is divided into two kinds of fuel injector control signal Acquisition Circuit and speed sensor signal Acquisition Circuit;
Fuel injector control signal Acquisition Circuit, the control signal that is used to gather fuel injector;
The signal acquisition circuit of speed sensor signal is used for the signal of picking rate, mileage;
Signal pre-processing circuit is handled the pulse signal of fuel injector and the signal of speed pickup, makes it be converted to the discernible pulse signal of single-chip microcomputer;
The micro computer treatment circuit is used for signal is carried out measurements and calculations;
Display circuit is made up of charactron and electronic component, is connected with microcomputer circuit, and the operation result of microcomputer circuit is shown with digital form;
The driver obtains the information of multiple automotive oil consumption from above device, understand the travel conditions of automobile and the consumption situation of fuel oil, and can be by adjusting driving habits, select the most fuel-efficient mode of travelling, thereby reach the saving fuel consume, also help environmental protection simultaneously.
Description of drawings
Fig. 1 is the fundamental diagram of the engine fuel system of example with multiple spot EFI four cylinder engine;
Fig. 2 is the structural representation of fuel consumption measuring device of the present invention;
Embodiment
The present invention will be described according to a preferred embodiment below with reference to accompanying drawing 2.
The device of realizing above-mentioned vehicle fuel consume measuring method comprises: fuel injector signal acquisition circuit 11, speed sensor signal Acquisition Circuit 12, fuel injector signal pre-processing circuit 21, speed pickup pre-process circuit 22, micro computer treatment circuit 3, display circuit 4.
Described 11, on the electrode by being connected to one or more engine fuel injectors or the signal output terminal of Electronic Fuel Injection (EFI) control system control fuel injector work, the control signal of gathering fuel injector;
The signal acquisition circuit 12 of described speed pickup is by being connected to the signal output part of automotive speed sensor, the signal of picking rate sensor;
Described fuel injector signal pre-processing circuit 21, under the constant situation of the original frequency of holding signal and pulsewidth, to the signal that the fuel injector signal acquisition circuit is delivered to isolate, processing such as amplification, clamped, filtering, finally be treated as the discernible pulse signal of single-chip microcomputer;
Described rate signal pre-process circuit 22, under the constant situation of the original frequency of holding signal and pulsewidth, processing such as the signal that the speed sensor signal Acquisition Circuit is delivered to amplifies, filtering finally are treated as the discernible pulse signal of single-chip microcomputer;
Described microcomputer 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 measured, calculated, and comprises following action:
1) pulsewidth of the pulse signal of measurement control engine fuel injector work is to measure the each time span (T) of opening of engine fuel injector;
2) tired total to the opening time, obtain the time length overall (∑ T) that engine fuel injector is opened;
3), be scaled the total fuel consumption of engine (∑ S) by proportional relationship the length overall of injector opening time (∑ T);
4) signal of measuring speed sensor obtains the travel speed of automobile and the numerical value of total kilometres;
5) length overall of the injector opening time in a period of time (∑ T) is converted into interior total fuel consumption (∑ S) of a period of time, and relatively calculate with vehicle driving mileage in this time period, obtain the numerical value (being the average oil consumption) of automotive average fuel consumption, and to be converted into to rise/hundred kilometers be unit;
6) injector opening time in the unit interval, the automobile driving speed that records with signal by automotive speed sensor relatively calculates, and obtains instantaneous oil consumption, and to be converted into to rise/hundred kilometers be unit;
Described display circuit 4 is made up of charactron and electronic component, is connected with microcomputer circuit 3, and the operation result of microcomputer circuit is shown with digital form;
By this device, just can realize multiple information with digital form vehicle oil wear indication amount.
Claims (8)
1, the method for the total oil consumption of a kind of measured automobiles, average oil consumption and instantaneous oil consumption is characterized in that this method comprises the steps:
(1) pulse signal of acquisition controlling oil nozzle of car engine work;
(2) signal of collection automotive speed sensor;
(3) pulsewidth of the pulse signal of measurement control engine fuel injector work is to measure the each time span of opening of engine fuel injector;
(4) tired total to the opening time, obtain the time length overall (∑ T) that engine fuel injector is opened;
(5), be scaled the total fuel consumption of engine (∑ S) by proportional relationship the length overall of injector opening time (∑ T);
(6) signal of measuring speed sensor obtains the travel speed of automobile and the numerical value of total kilometres;
(7) length overall of the injector opening time in a period of time (∑ T) is converted into total fuel consumption (∑ S) in a period of time, and relatively calculates, obtain the automotive average fuel consumption amount with vehicle driving mileage in this time period;
(8) injector opening time in the unit interval, the automobile driving speed that records with signal by automotive speed sensor relatively calculates, and obtains instantaneous oil consumption;
(9) by display circuit operation result is shown with digital form;
2, a kind of device of implementing the total oil consumption of the described method measured automobiles of claim 1, average oil consumption and instantaneous oil consumption, its feature comprises: fuel injector control signal Acquisition Circuit 11, speed sensor signal Acquisition Circuit 12, fuel injector signal pre-processing circuit 21, speed pickup pre-process circuit 22, micro computer treatment circuit 3, display circuit 4.
3, according to the described fuel injector signal acquisition circuit 11 of claim 2, it is characterized in that controlling on the signal output terminal of fuel injector work, gather the control signal of fuel injector by the electrode or the Electronic Fuel Injection (EFI) control system that are connected to one or more engine fuel injectors;
4,, it is characterized in that by being connected to the signal output part of automotive speed sensor, the signal of picking rate sensor according to the signal acquisition circuit 12 of the described speed pickup of claim 2;
5, according to the described fuel injector signal pre-processing circuit 21 of claim 2, it is characterized in that under the constant situation of original frequency of holding signal and pulsewidth, to the fuel injector signal isolate, processing such as amplification, clamped, filtering, finally be treated as the discernible pulse signal of single-chip microcomputer;
6, according to the described rate signal pre-process circuit 22 of claim 2, described rate signal pre-process circuit 22, under the constant situation of the original frequency of holding signal and pulsewidth, to speed sensor signal amplify, processing such as filtering, finally be treated as the discernible pulse signal of single-chip microcomputer;
7, according to the described microcomputer circuit 3 of claim 2, it is characterized in that forming, be connected, the signal that transmits is measured, calculated with the signal pre-processing circuit signal output part by single-chip microcomputer, digital circuit component and electronic component;
8, according to the described display circuit 4 of claim 2, it is characterized in that forming, be connected, the operation result of microcomputer circuit is shown with digital form with microcomputer circuit by charactron and electronic component;
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| CN 03139937 CN1576804A (en) | 2003-07-28 | 2003-07-28 | Method for measuring vehicle fuel consumption and apparatus thereof |
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| CN 03139937 CN1576804A (en) | 2003-07-28 | 2003-07-28 | Method for measuring vehicle fuel consumption and apparatus thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592508B (en) * | 2009-06-29 | 2011-01-26 | 交通部公路科学研究院 | Automobile fuel consumption detection system and detection method thereof |
| CN101968632A (en) * | 2010-06-30 | 2011-02-09 | 奇瑞汽车股份有限公司 | Vehicle fuel consumption display control system and method |
| CN101619995B (en) * | 2008-06-30 | 2011-06-15 | 上海德科电子仪表有限公司 | Method for measuring travelled mileage of residual fuel in fuel tank |
| CN101738233B (en) * | 2010-01-15 | 2011-10-26 | 延锋伟世通怡东汽车仪表有限公司 | Method for calculating average fuel consumption, remaining fuel and driving range |
| CN102279010A (en) * | 2010-04-02 | 2011-12-14 | 通用汽车环球科技运作有限责任公司 | Vehicle fuel efficiency display |
| CN102435248A (en) * | 2011-10-27 | 2012-05-02 | 奇瑞汽车股份有限公司 | Computing method for motor vehicle continuous voyage mileage meter |
| CN102538890A (en) * | 2011-12-31 | 2012-07-04 | 北京中科微电子技术有限公司 | Method and device for obtaining course continuation mileage of motor vehicle |
| CN102556078A (en) * | 2011-12-26 | 2012-07-11 | 联合汽车电子有限公司 | Oil-saving drive evaluation system and method regarding idling and stable work conditions |
| CN102564512A (en) * | 2011-12-31 | 2012-07-11 | 北京中科微电子技术有限公司 | Method and device for obtaining real-time oil consumption of automotive vehicle |
| CN102692256A (en) * | 2012-06-15 | 2012-09-26 | 南京农业大学 | Vehicle fuel consumption real-time measuring and displaying device |
| CN102809395A (en) * | 2012-06-28 | 2012-12-05 | 三一重工股份有限公司 | System and method for monitoring oil consumption of engineering vehicle and engine |
| CN103324820A (en) * | 2012-03-20 | 2013-09-25 | 财团法人资讯工业策进会 | Driving oil consumption calculation method and driving oil consumption calculation system |
| CN103607408A (en) * | 2013-11-29 | 2014-02-26 | 青岛海信网络科技股份有限公司 | Fuel consumption accounting method and device based on real-time fuel consumption information acquisition |
| CN103954329A (en) * | 2014-05-13 | 2014-07-30 | 国家电网公司 | Vehicle oil consumption data acquisition system and method thereof |
| CN104790276A (en) * | 2015-02-13 | 2015-07-22 | 徐州徐工筑路机械有限公司 | Asphalt mixing station fuel oil consumption rate display system and control method thereof |
| CN105928579A (en) * | 2016-04-19 | 2016-09-07 | 奇瑞汽车股份有限公司 | Endurance mileage calculation control method |
| CN109789786A (en) * | 2016-09-29 | 2019-05-21 | 三菱电机株式会社 | Program is estimated in oil consumption estimating system, oil consumption estimation method and oil consumption |
| CN113043916A (en) * | 2021-04-23 | 2021-06-29 | 上汽大通汽车有限公司 | System and method for testing cruising ability of hydrogen fuel cell vehicle |
-
2003
- 2003-07-28 CN CN 03139937 patent/CN1576804A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619995B (en) * | 2008-06-30 | 2011-06-15 | 上海德科电子仪表有限公司 | Method for measuring travelled mileage of residual fuel in fuel tank |
| CN101592508B (en) * | 2009-06-29 | 2011-01-26 | 交通部公路科学研究院 | Automobile fuel consumption detection system and detection method thereof |
| CN101738233B (en) * | 2010-01-15 | 2011-10-26 | 延锋伟世通怡东汽车仪表有限公司 | Method for calculating average fuel consumption, remaining fuel and driving range |
| CN102279010A (en) * | 2010-04-02 | 2011-12-14 | 通用汽车环球科技运作有限责任公司 | Vehicle fuel efficiency display |
| CN102279010B (en) * | 2010-04-02 | 2015-01-07 | 通用汽车环球科技运作有限责任公司 | Vehicle fuel efficiency display |
| CN101968632A (en) * | 2010-06-30 | 2011-02-09 | 奇瑞汽车股份有限公司 | Vehicle fuel consumption display control system and method |
| CN101968632B (en) * | 2010-06-30 | 2012-09-05 | 奇瑞汽车股份有限公司 | Vehicle fuel consumption display control system and method |
| CN102435248A (en) * | 2011-10-27 | 2012-05-02 | 奇瑞汽车股份有限公司 | Computing method for motor vehicle continuous voyage mileage meter |
| CN102556078B (en) * | 2011-12-26 | 2014-12-24 | 联合汽车电子有限公司 | Oil-saving drive evaluation method regarding idling and stable work conditions |
| CN102556078A (en) * | 2011-12-26 | 2012-07-11 | 联合汽车电子有限公司 | Oil-saving drive evaluation system and method regarding idling and stable work conditions |
| CN102538890A (en) * | 2011-12-31 | 2012-07-04 | 北京中科微电子技术有限公司 | Method and device for obtaining course continuation mileage of motor vehicle |
| CN102538890B (en) * | 2011-12-31 | 2013-08-14 | 北京中科微电子技术有限公司 | Method and device for obtaining course continuation mileage of motor vehicle |
| CN102564512A (en) * | 2011-12-31 | 2012-07-11 | 北京中科微电子技术有限公司 | Method and device for obtaining real-time oil consumption of automotive vehicle |
| CN103324820A (en) * | 2012-03-20 | 2013-09-25 | 财团法人资讯工业策进会 | Driving oil consumption calculation method and driving oil consumption calculation system |
| CN102692256A (en) * | 2012-06-15 | 2012-09-26 | 南京农业大学 | Vehicle fuel consumption real-time measuring and displaying device |
| CN102809395A (en) * | 2012-06-28 | 2012-12-05 | 三一重工股份有限公司 | System and method for monitoring oil consumption of engineering vehicle and engine |
| CN102809395B (en) * | 2012-06-28 | 2014-09-10 | 三一重工股份有限公司 | System and method for monitoring oil consumption of engineering vehicle and engine |
| CN103607408A (en) * | 2013-11-29 | 2014-02-26 | 青岛海信网络科技股份有限公司 | Fuel consumption accounting method and device based on real-time fuel consumption information acquisition |
| CN103607408B (en) * | 2013-11-29 | 2016-09-07 | 青岛海信网络科技股份有限公司 | Oil consumption accounting method based on real-time fuel consumption information gathering and device |
| CN103954329A (en) * | 2014-05-13 | 2014-07-30 | 国家电网公司 | Vehicle oil consumption data acquisition system and method thereof |
| CN103954329B (en) * | 2014-05-13 | 2017-10-20 | 国家电网公司 | Vehicle oil consumption data collecting system and method |
| CN104790276A (en) * | 2015-02-13 | 2015-07-22 | 徐州徐工筑路机械有限公司 | Asphalt mixing station fuel oil consumption rate display system and control method thereof |
| CN105928579A (en) * | 2016-04-19 | 2016-09-07 | 奇瑞汽车股份有限公司 | Endurance mileage calculation control method |
| CN109789786A (en) * | 2016-09-29 | 2019-05-21 | 三菱电机株式会社 | Program is estimated in oil consumption estimating system, oil consumption estimation method and oil consumption |
| CN113043916A (en) * | 2021-04-23 | 2021-06-29 | 上汽大通汽车有限公司 | System and method for testing cruising ability of hydrogen fuel cell vehicle |
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