CN112389349A - Method and system for monitoring fuel consumption of vehicle - Google Patents
Method and system for monitoring fuel consumption of vehicle Download PDFInfo
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- CN112389349A CN112389349A CN201910759580.5A CN201910759580A CN112389349A CN 112389349 A CN112389349 A CN 112389349A CN 201910759580 A CN201910759580 A CN 201910759580A CN 112389349 A CN112389349 A CN 112389349A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0236—Circuits relating to the driving or the functioning of the vehicle for economical driving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
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Abstract
The invention provides a method for monitoring the subentry oil consumption of a vehicle, which comprises the following steps: firstly, acquiring the total oil consumption of a vehicle; then obtaining the oil consumption of the air conditioner of the vehicle; then obtaining idle oil consumption; then acquiring the violent driving oil consumption and the normal driving oil consumption in the corresponding time period; calculating the ratio of the oil consumption of the air conditioner, the oil consumption of the idle speed, the oil consumption of the violent driving and the oil consumption of the normal driving in corresponding time periods respectively; and finally, the subentry oil consumption data and the subentry oil consumption ratio are fed back and displayed, so that the owner can further know the oil consumption condition conveniently, and can guide the driving behavior and even correct the bad driving habit according to the condition, thereby achieving the purpose of reducing the oil consumption. Further, the vehicle includes: the system comprises an acquisition unit, a judgment unit, an operation unit, a display unit and a communication unit, wherein the operation unit can calculate the fractional oil consumption and the fractional oil consumption ratio, so that an owner can directly acquire data of the fractional oil consumption when using a vehicle, and great convenience is brought to the owner.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a system for monitoring the subentry oil consumption of a vehicle.
Background
In the field of automobiles, most automobile instrument panels can display fuel consumption per hundred kilometers, the fuel consumption of a vehicle is one of important parameters for detecting the performance of the vehicle, but the fuel consumption per hundred kilometers of the same vehicle are greatly different because the fuel consumption of the vehicle is also closely related to external factors such as the driving habits of the vehicle owner, the road condition complexity and the like.
The vehicle CAN obtain engine operation parameters such as instantaneous fuel injection quantity of an engine, required torque of the engine and the like through a plurality of existing sensors on the CAN bus, and CAN directly obtain data such as vehicle speed, total fuel consumption and the like through the sensors on the CAN bus. Further, the signals and data obtained by the sensors CAN be transmitted to an Electronic Control Unit (ECU) via a CAN bus, the ECU generally comprising: signal conversion unit, arithmetic element, memory cell and controller. At present, the oil consumption of a vehicle under certain working conditions, such as parking operation, large accelerator, rapid acceleration and the like, can be calculated through an operation unit of an ECU (electronic control Unit).
However, the current vehicle cannot calculate the fuel consumption such as the fuel consumption of an air conditioner, the fuel consumption of an idle speed, the fuel consumption of a violent driving and the fuel consumption of a normal driving, and the fuel consumption data of different vehicles cannot be compared, so that a vehicle owner cannot find out the specific reason of high fuel consumption of the vehicle according to the fuel consumption value of one hundred kilometers which is uniquely displayed on an instrument panel, and the driving behavior cannot be improved in a targeted manner and some unnecessary fuel consumption of the vehicle cannot be reduced.
Disclosure of Invention
The invention aims to provide a method and a system for monitoring the fuel consumption of a vehicle in terms, which aim to solve the problem that the total fuel consumption of the vehicle cannot be calculated in terms.
In order to solve the technical problem, the invention provides a method for monitoring fuel consumption by items of a vehicle, which comprises the following steps:
acquiring the total oil consumption of the vehicle;
calculating according to a preset rule to obtain the oil consumption of an air conditioner of the vehicle;
when the vehicle is in an idling state, obtaining idling oil consumption according to the air conditioner oil consumption and the total oil consumption;
when the longitudinal acceleration or the transverse acceleration of the vehicle is respectively larger than the respective set threshold value, acquiring the violent driving oil consumption in the corresponding time period according to the air conditioner oil consumption and the total oil consumption;
obtaining normal driving oil consumption in a corresponding time period according to the total oil consumption, the idling oil consumption and the violent driving oil consumption;
respectively calculating the ratio of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption in corresponding time periods;
and feeding back and displaying the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving, the oil consumption of normal driving, the oil consumption ratio of the air conditioner, the oil consumption ratio of idling, the oil consumption ratio of violent driving and the oil consumption ratio of normal driving.
Optionally, in the method for monitoring fuel consumption by items of the vehicle, the step of obtaining fuel consumption of the air conditioner includes: obtaining the instantaneous fuel injection quantity of an engine, the torque required by the engine and the torque required by an air conditioner of the vehicle; obtaining the instantaneous oil consumption of the air conditioner according to the instantaneous oil injection quantity of the engine, the torque required by the engine and the torque required by the air conditioner; and obtaining the oil consumption of the air conditioner according to the instantaneous oil consumption of the air conditioner.
Optionally, in the method for monitoring fuel consumption by items of the vehicle, the fuel consumption of the air conditioner is obtained according to the following formula:
in the formula, CARepresents the oil consumption of the air conditioner, and the unit is J; k is more than or equal to i and less than or equal to j, and i-j represents the working time period of the air conditioner; cakTo representThe instantaneous oil consumption of the air conditioner at the k time point in the i-j time period;
the instantaneous oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CakThe unit of the air conditioner is L/h; ceThe unit of the instantaneous fuel injection quantity of the engine is L/h; maRepresents the air conditioner demand torque in units of J; meRepresents the engine demand torque in J.
Optionally, in the method for monitoring the fuel consumption by items of the vehicle, all time periods during which the idle state continues are monitored in a total time period, and statistics is performed on all time periods as follows: p-q, wherein the p-q time period is positioned in the total time period of i-j, and the total oil consumption in the idling state is recorded as Ct1The idle oil consumption is obtained according to the following formula:
in the formula, CbThe unit of the fuel consumption in idling is L/h; p is not less than k and not more than q; cARepresents the oil consumption of the air conditioner, and the unit is J; if the vehicle uses the automatic start-stop function, the oil consumption of the air conditioner of the vehicle in the idling state is 0, and the formula is as follows:
optionally, in the method for monitoring the fuel consumption by items of the vehicle, all time periods during which the violent driving state continues are monitored in a total time period, and statistics is performed on all time periods as follows: s-t, wherein the s-t time period is positioned in the i-j time period, and the total oil consumption in the violent driving state is recorded as Ct2The fuel consumption for violent driving is obtained according to the following formula:
in the formula, CfThe unit is L/h, which represents the fuel consumption of violent driving; cARepresents the oil consumption of the air conditioner, and the unit is J; wherein s is less than or equal to k is less than or equal to t.
Optionally, in the method for monitoring the fuel consumption by items of the vehicle, in the total time period, all the time periods in which the normal driving state continues are counted as: u-v, wherein the time period of u-v is positioned in the total time period of i-j, and the total oil consumption of the vehicle in the total time period of i-j is recorded as CTThe normal driving oil consumption is obtained according to the following formula:
in the formula, CnThe unit of the fuel consumption of the normal driving is L/h; cTRepresenting the total fuel consumption of the vehicle in the i-j time period; cbThe idle oil consumption of the corresponding idle state time period in the i-j time period is represented; cfThe fuel consumption of violent driving corresponding to the violent driving time period in the time period from i to j is represented; cAAnd the oil consumption of the air conditioner in the time period from i to j is shown, wherein i is less than or equal to k and less than or equal to j.
Optionally, in the method for monitoring the fuel consumption by items of the vehicle, a display unit of the vehicle is used for displaying the total fuel consumption, the fuel consumption of an air conditioner, the fuel consumption in an idle state, the fuel consumption in a violent driving state, the fuel consumption in a normal driving state, the fuel consumption in an air conditioner, the fuel consumption in an idle state, the fuel consumption in a violent driving state and the fuel consumption in a normal driving state; and/or feeding back the total oil consumption, the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption, the normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio to a related mobile terminal and a cloud server by utilizing a communication unit of the vehicle.
Based on the same inventive concept, the invention also provides a monitoring system for the fuel consumption of the vehicle, which comprises: the device comprises an acquisition unit, a judgment unit, an operation unit, a display unit and a communication unit;
the acquisition unit is used for acquiring the total oil consumption of the vehicle, the speed of the vehicle, the transverse acceleration of the vehicle and the longitudinal acceleration of the vehicle;
the judging unit is used for judging the motion state of the vehicle according to the speed of the vehicle, the lateral acceleration of the vehicle and the longitudinal acceleration of the vehicle;
the operation unit is used for obtaining oil consumption of the air conditioner, oil consumption of idling, oil consumption of violent driving and oil consumption of normal driving, and is also used for obtaining the proportion of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption in a corresponding time period;
the display unit is used for displaying oil consumption of the air conditioner, idling oil consumption, violent driving oil consumption, normal driving oil consumption, the proportion of the oil consumption of the air conditioner, the proportion of the idling oil consumption, the proportion of the violent driving oil consumption and the proportion of the normal driving oil consumption;
the communication unit is used for feeding back air conditioner oil consumption, idle oil consumption, violent driving oil consumption, normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio to the associated mobile terminal and the cloud server.
Optionally, in the monitoring system for the fuel consumption by items of the vehicle, the obtaining unit obtains an instantaneous fuel injection quantity of an engine, a torque required by the engine, and a torque required by an air conditioner of the vehicle; the operation unit obtains the instantaneous oil consumption of the air conditioner according to the instantaneous oil injection quantity of the engine, the torque required by the engine and the torque required by the air conditioner, obtains the oil consumption of the air conditioner according to the instantaneous oil consumption of the air conditioner, obtains the idle oil consumption, the violent driving oil consumption and the normal driving oil consumption according to the oil consumption of the air conditioner and the total oil consumption, and obtains the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio according to the idle oil consumption, the idling oil consumption ratio, the violent driving oil consumption ratio and the total oil consumption.
Optionally, in the monitoring system for fuel consumption by items of the vehicle, the operation unit obtains fuel consumption of the air conditioner according to the following formula:
in the formula, CARepresents the oil consumption of the air conditioner, and the unit is J; k is more than or equal to i and less than or equal to j, and i-j represents the working time period of the air conditioner; cakRepresenting the instantaneous oil consumption of the air conditioner at a certain point in time within the i-j time period.
The instantaneous oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CakThe unit of the air conditioner is L/h; ceThe unit of the instantaneous fuel injection quantity of the engine is L/h; maRepresents the air conditioner demand torque in units of J; meRepresents the engine demand torque in J.
Optionally, in the monitoring system for fuel consumption by items of the vehicle, the arithmetic unit calculates an idle oil consumption, monitors all time periods during which the idle state continues in a total time period, and counts all the time periods as: p-q, wherein the p-q time period is positioned in the total time period of i-j, and the total oil consumption in the idling state is recorded as Ct1The idle oil consumption is obtained according to the following formula:
in the formula, CbThe unit of the fuel consumption in idling is L/h; p is not less than k and not more than q; cARepresents the oil consumption of the air conditioner, and the unit is J; if the vehicle uses the automatic start-stop function, the oil consumption of the air conditioner of the vehicle in the idling state is 0, and the formula is as follows:
optionally, in the system for monitoring fuel consumption by vehicle, the computing unit calculates fuel consumption of violent driving, and monitors the violent driving state in a total time periodAll time periods of state duration are counted as: s-t, wherein the s-t time period is positioned in the total i-j time period, and the total oil consumption in the violent driving state is recorded as Ct2The fuel consumption for violent driving is obtained according to the following formula:
in the formula, CfThe unit is L/h, which represents the fuel consumption of violent driving; cARepresents the oil consumption of the air conditioner, and the unit is J; wherein s is less than or equal to k is less than or equal to t.
Optionally, in the monitoring system for fuel consumption by vehicle, the computing unit calculates consumed fuel consumption by normal driving, and in a total time period, statistics is performed on all time periods in which a normal driving state continues, where the counted time periods are as follows: u-v, wherein the time period of u-v is positioned in the total time period of i-j, and the total oil consumption of the vehicle in the total time period of i-j is recorded as CTThe normal driving oil consumption is obtained according to the following formula:
in the formula, CnThe unit of the fuel consumption of the normal driving is L/h; cTRepresenting the total fuel consumption of the vehicle in the i-j time period; cbThe idle oil consumption of the corresponding idle state time period in the i-j time period is represented; cfThe fuel consumption of violent driving corresponding to the violent driving time period in the time period from i to j is represented; cAAnd the oil consumption of the air conditioner in the time period from i to j is shown, wherein i is less than or equal to k and less than or equal to j.
In summary, the present invention provides a method for monitoring fuel consumption by items of a vehicle, including: firstly, acquiring the total oil consumption of a vehicle; then acquiring the oil consumption of the air conditioner according to a preset rule; then obtaining idle oil consumption according to the air conditioner oil consumption and the total oil consumption; then obtaining the violent driving oil consumption according to the air conditioner oil consumption and the total oil consumption; then obtaining normal driving oil consumption according to the total oil consumption, the idling oil consumption and the violent driving oil consumption; calculating the ratio of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption respectively; and finally, air conditioner oil consumption, idle oil consumption, violent driving oil consumption, normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio are fed back and displayed, so that an owner can further know the oil consumption condition, and can guide driving behaviors and even correct some bad driving habits, thereby achieving the purpose of reducing the oil consumption and reducing the air pollution in a phase-changing manner. Further, the present invention also provides a system for monitoring fuel consumption by items of a vehicle, comprising: the intelligent fuel consumption monitoring system comprises an acquisition unit, a judgment unit, an operation unit, a display unit and a communication unit, wherein the operation unit can acquire air conditioner fuel consumption, idle fuel consumption, violent driving fuel consumption, normal driving fuel consumption and the proportion of the air conditioner fuel consumption, the idle fuel consumption, the violent driving fuel consumption and the normal driving fuel consumption relative to the total fuel consumption in a corresponding time period, and the display unit displays the data, so that a vehicle owner can directly acquire data of the proportion of the subentry fuel consumption and the subentry fuel consumption when using the vehicle, the vehicle owner is facilitated, the driving mode of the vehicle owner is improved on the basis of the clear subentry fuel consumption condition, and the purpose of saving fuel is achieved.
Drawings
FIG. 1 is a flow chart of a method for monitoring fuel consumption by fuel consumption in a vehicle according to an embodiment of the present invention;
FIG. 2 is a block diagram of a system for monitoring fuel consumption by vehicle according to an embodiment of the present invention;
wherein the reference numbers indicate:
10-monitoring system of fuel consumption by items of vehicle, 11-obtaining unit, 12-judging unit, 13-arithmetic unit, 14-display unit and 15-communication unit.
Detailed Description
The method for monitoring fuel consumption per item of a vehicle and the system thereof according to the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
The invention provides a method for monitoring fuel consumption by items of a vehicle, and referring to fig. 1, fig. 1 is a flow chart of a method for monitoring fuel consumption by items of a vehicle according to an embodiment of the invention, and the method for monitoring fuel consumption by items of the vehicle comprises the following steps:
s10: acquiring the total oil consumption of the vehicle;
s20: calculating according to a preset rule to obtain the oil consumption of an air conditioner of the vehicle;
s30: when the vehicle is in an idling state, obtaining idling oil consumption according to the air conditioner oil consumption and the total oil consumption;
s40: when the longitudinal acceleration or the transverse acceleration of the vehicle is respectively larger than the respective set threshold value, acquiring the violent driving oil consumption in the corresponding time period according to the air conditioner oil consumption and the total oil consumption;
s50: obtaining normal driving oil consumption in a corresponding time period according to the total oil consumption, the idling oil consumption and the violent driving oil consumption;
s60: respectively calculating the ratio of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption in corresponding time periods;
s70: and feeding back and displaying the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving, the oil consumption of normal driving, the oil consumption ratio of the air conditioner, the oil consumption ratio of idling, the oil consumption ratio of violent driving and the oil consumption ratio of normal driving.
Specifically, first, the total fuel consumption of the vehicle is obtained, and in the present embodiment, the total fuel consumption of the vehicle is read in the ECU of the vehicle.
Then, calculating according to a preset rule to obtain the oil consumption of an air conditioner of the vehicle, specifically, setting a first threshold and a second threshold, wherein the first threshold and the second threshold can be manually or intelligently set according to the actual vehicle type and the actual engine performance at the later stage, and the units of the first threshold and the second threshold are both m/s2. The vehicle running state is divided into, based on the speed of the vehicle, the lateral acceleration of the vehicle, and the longitudinal acceleration of the vehicle: in the embodiment, the speed of the vehicle, the lateral acceleration of the vehicle and the longitudinal acceleration of the vehicle can be directly read from the ECU of the vehicle, and the calculation formula of the speed of the vehicle, the lateral acceleration of the vehicle and the longitudinal acceleration of the vehicle is not described. If the speed of the vehicle is not 0 and the lateral acceleration of the vehicle is greater than the first threshold value, or if the speed of the vehicle is not 0 and the longitudinal acceleration of the vehicle is greater than the second threshold value, the vehicle is considered to be in a violent driving state, that is, the violent driving can be considered to be the longitudinal acceleration of the vehicle or the lateral acceleration of the vehicle is too large; if the speed of the vehicle is not 0, the lateral acceleration of the vehicle is less than or equal to the first threshold value, and the longitudinal acceleration of the vehicle is less than or equal to the second threshold value, the vehicle is considered to be in a normal driving state; if the speed of the vehicle is 0, the vehicle is considered to be in an idle state, and the idle state in the embodiment is as follows: the vehicle speed is 0 when the vehicle is not in the key-off state. The invention only introduces three states of violent driving state, normal driving state and idling state, the application does not limit the driving state of the vehicle at all, and the method for monitoring the subentry oil consumption of the vehicle is suitable for the driving state of the vehicle related to the technical field. In this embodiment, the fuel consumption items include fuel consumption of an air conditioner, fuel consumption of an idle engine, fuel consumption of a violent driving, and fuel consumption of a normal driving.
And then, acquiring the instantaneous oil consumption of the air conditioner according to the instantaneous oil injection quantity of the engine of the vehicle, the torque required by the engine and the torque required by the air conditioner. In the present embodiment, the engine instantaneous fuel injection amount, the engine required torque, and the air-conditioning required torque of the vehicle are known amounts, and can be directly read from the ECU of the vehicle. The instantaneous oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CakThe unit of the air conditioner is L/h; ceThe unit of the instantaneous fuel injection quantity of the engine is L/h; maRepresents the air conditioner demand torque in units of J; meRepresents the engine demand torque in J.
And then, acquiring the oil consumption of the air conditioner according to the instantaneous oil consumption of the air conditioner. Specifically, the oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CARepresents the oil consumption of the air conditioner, and the unit is J; k is more than or equal to i and less than or equal to j, and i-j represents the working time period of the air conditioner, namely the total time period; cakAnd the instantaneous oil consumption of the air conditioner at the k time point in the i-j time period is shown.
In the embodiment, the instantaneous oil consumption of the air conditioner is obtained according to the instantaneous oil injection quantity of the engine, the torque required by the engine and the torque required by the air conditioner of the vehicle, and then the oil consumption of the air conditioner is obtained according to the instantaneous oil consumption of the air conditioner, so that the obtaining precision of the oil consumption of the air conditioner is improved, and the accuracy of the monitoring method of the fuel consumption of the vehicle is ensured.
In this embodiment, an owner or other vehicle users can obtain any data of the oil consumption of the air conditioner, the oil consumption of the idle speed, the oil consumption of the violent driving and the oil consumption of the normal driving according to actual needs, and the total oil consumption of the vehicle is subdivided into the oil consumption of the air conditioner, the oil consumption of the idle speed, the oil consumption of the violent driving and the oil consumption of the normal driving, so that the owner can conveniently know the oil consumption condition, and can guide the driving behavior and even correct some bad driving habits, thereby achieving the purpose of reducing the oil consumption.
Next, the present invention describes in detail how to obtain the idle fuel consumption, the violent driving fuel consumption, and the normal driving fuel consumption, respectively.
When the vehicle is in an idling state, obtaining idling oil consumption according to the air conditioner oil consumption and the total oil consumption, specifically, monitoring all time periods of the idling state in the total time period, and counting all the time periods as follows:p-q, wherein the p-q time period is positioned in the total time period of i-j, and the total oil consumption in the idling state is recorded as Ct1(Ct1The default can be directly read from the ECU), and the idle oil consumption is obtained according to the following formula:
in the formula, CbThe unit of the fuel consumption in idling is L/h; p is not less than k and not more than q; cARepresents the oil consumption of the air conditioner, and the unit is J; if the vehicle uses the automatic start-stop function, the oil consumption of the air conditioner of the vehicle in the idling state is 0, and the formula is as follows:
when the speed of the vehicle is not 0 and the lateral acceleration of the vehicle is greater than the first threshold, or when the speed of the vehicle is not 0 and the longitudinal acceleration of the vehicle is greater than the second threshold, the fuel consumption of aggressive driving in a corresponding time period is obtained according to the fuel consumption of the air conditioner and the total fuel consumption, specifically, in the total time period, all time periods in which the aggressive driving state continues are monitored, and all time periods are counted as: s-t, wherein the s-t time period is positioned in the total i-j time period, and the total oil consumption in the violent driving state is recorded as Ct2(Ct2The default can be directly read from the ECU), and the fuel consumption for violent driving is obtained according to the following formula:
in the formula, CfThe unit is L/h, which represents the fuel consumption of violent driving; cARepresents the oil consumption of the air conditioner, and the unit is J; wherein s is less than or equal to k is less than or equal to t.
And acquiring normal driving oil consumption in a corresponding time period according to the total oil consumption, the idling oil consumption and the violent driving oil consumption, specifically, counting all time periods in which a normal driving state lasts in the total time period as follows: u-v, wherein,the u-v time period is positioned in the total i-j time period, and the total oil consumption of the vehicle in the total i-j time period is recorded as CT(CTThe default can be directly read from the ECU), and the normal driving oil consumption is obtained according to the following formula:
in the formula, CnThe unit of the fuel consumption of the normal driving is L/h; cTRepresenting the total fuel consumption of the vehicle in the i-j time period; cbThe idle oil consumption of the corresponding idle state time period in the i-j time period is represented; cfThe fuel consumption of violent driving corresponding to the violent driving time period in the time period from i to j is represented; cAAnd the oil consumption of the air conditioner is represented in an i-j time period, wherein i is less than or equal to k is less than or equal to j, and in the embodiment, the total i-j time period is equal to the sum of a p-q time period, an s-t time period and a u-v time period.
Further, the proportion of the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption and the normal driving oil consumption relative to the total oil consumption in the corresponding time periods is respectively calculated, namely the air conditioner oil consumption proportion, the idle oil consumption proportion, the violent driving oil consumption proportion, the normal driving oil consumption proportion and the normal driving oil consumption proportion are obtained according to the air conditioner oil consumption, the idle oil consumption proportion, the violent driving oil consumption proportion and the total oil consumption in the total time periods.
Specifically, the air conditioner oil consumption ratio is obtained according to the air conditioner oil consumption and the total oil consumption by adopting the following formula:
wherein A represents the air conditioner fuel consumption ratio, CAIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
Obtaining an idle oil consumption ratio according to the idle oil consumption and the total oil consumption by adopting the following formula:
wherein B represents the fuel consumption at idle and CbIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
And obtaining the fuel consumption ratio of the violent driving according to the fuel consumption of the violent driving and the total fuel consumption by adopting the following formula:
wherein F represents the fuel consumption ratio in violent driving, and CfIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
And obtaining the ratio of the normal driving oil consumption according to the normal driving oil consumption and the total oil consumption by adopting the following formula:
wherein N represents the fuel consumption ratio in normal driving, and CnIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
Through the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio, the vehicle owner and other vehicle users can more intuitively see the oil consumption distribution conditions of the vehicle in different driving states, so that the driving behaviors of the vehicle owner and other vehicle users can be guided or improved in a targeted manner, the purpose of improving the oil consumption is achieved, meanwhile, the vehicle owner can also compare with the historical subentry oil consumption records of the vehicle owner, and whether the current subentry oil consumption index is improved compared with the historical subentry oil consumption index or not is checked.
And finally, feeding back and displaying the oil consumption of the air conditioner, the oil consumption of the idle speed, the oil consumption of the violent driving, the oil consumption of the normal driving, the oil consumption ratio of the air conditioner, the oil consumption ratio of the idle speed, the oil consumption ratio of the violent driving and the oil consumption ratio of the normal driving. Specifically, a display unit of the vehicle is used for displaying the total oil consumption, the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption, the normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio; and/or feeding back the total oil consumption, the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption, the normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio to a related mobile terminal and a cloud server by utilizing a communication unit of the vehicle. Preferably, the total fuel consumption, the air conditioner fuel consumption, the subentry fuel consumption, the air conditioner fuel consumption ratio, the idle fuel consumption ratio, the violent driving fuel consumption ratio and the normal driving fuel consumption ratio are displayed by an electronic instrument panel of the vehicle, a central control display screen of the vehicle and a mobile terminal (such as an electronic mobile device like a mobile phone) associated with the vehicle, and the subentry oil consumption data and the subentry oil consumption ratio are fed back to the cloud server, so that the owner can check the subentry oil consumption and the ranking interval of the subentry oil consumption ratio in the big data of the associated mobile terminal or the cloud server in time inside and outside the vehicle, the method is used as a reference for improving driving behaviors and reducing oil consumption, so that a vehicle owner can conveniently know the ranking of the own subentry oil consumption in a certain city, a certain district, a certain province, the whole country or even the whole world to a certain extent, and accordingly, the driving mode is improved in a targeted manner or the current driving level is kept.
Based on the same inventive concept, the present invention further provides a monitoring system for fuel consumption by items of a vehicle, referring to fig. 2, where fig. 2 is a block diagram of the monitoring system for fuel consumption by items of a vehicle according to an embodiment of the present invention, and the monitoring system 10 for fuel consumption by items of a vehicle includes: acquisition section 11, determination section 12, arithmetic section 13, display section 14, and communication section 15.
The acquiring unit 11 is used for acquiring total fuel consumption of the vehicle, speed of the vehicle, lateral acceleration of the vehicle and longitudinal acceleration of the vehicle; the method is also used for obtaining the instantaneous fuel injection quantity of the engine, the torque required by the engine and the torque required by the air conditioner.
The determination unit 12 is configured to determine a motion state of the vehicle according to a speed of the vehicle, a lateral acceleration of the vehicle, and a longitudinal acceleration of the vehicle, and specifically, set a first threshold and a second threshold, where the first threshold and the second threshold are setThe second threshold value can be set manually or intelligently according to actual vehicle models and actual engine performance later stages, and the units of the first threshold value and the second threshold value are m/s2. The determination unit 12 divides the vehicle running state into: in the embodiment, the speed of the vehicle, the lateral acceleration of the vehicle and the longitudinal acceleration of the vehicle can be directly read from the ECU of the vehicle, and the calculation formula of the speed of the vehicle, the lateral acceleration of the vehicle and the longitudinal acceleration of the vehicle is not described. If the speed of the vehicle is not 0 and the lateral acceleration of the vehicle is greater than the first threshold value, or if the speed of the vehicle is not 0 and the longitudinal acceleration of the vehicle is greater than the second threshold value, the vehicle is considered to be in a violent driving state, that is, the violent driving can be considered to be the longitudinal acceleration of the vehicle or the lateral acceleration of the vehicle is too large; if the speed of the vehicle is not 0, the lateral acceleration of the vehicle is less than or equal to the first threshold value, and the longitudinal acceleration of the vehicle is less than or equal to the second threshold value, the vehicle is considered to be in a normal driving state; if the speed of the vehicle is 0, the vehicle is considered to be in an idle state, and the idle state in the embodiment is as follows: the vehicle speed is 0 when the vehicle is not in the key-off state. The invention only introduces three states of violent driving state, normal driving state and idling state, and the driving state of the vehicle is not limited in any way.
The operation unit 13 is configured to obtain oil consumption of the air conditioner, oil consumption of idling, oil consumption of violent driving, and oil consumption of normal driving, and is further configured to obtain a ratio of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving, and the oil consumption of normal driving with respect to the total oil consumption in a corresponding time period. Specifically, the operation unit 13 obtains an air conditioner instantaneous oil consumption according to the engine instantaneous oil injection quantity, the engine demand torque and the air conditioner demand torque obtained by the obtaining unit 11, obtains an air conditioner oil consumption according to the air conditioner instantaneous oil consumption, obtains the idle oil consumption, the violent driving oil consumption and the normal driving oil consumption according to the air conditioner oil consumption and the total oil consumption, and finally obtains the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio according to the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption ratio and the total oil consumption. The following is a detailed description of the calculation formulas of the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption, the normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio.
Specifically, the operation unit 13 obtains the oil consumption of the air conditioner according to the following formula:
in the formula, CARepresents the oil consumption of the air conditioner, and the unit is J; k is more than or equal to i and less than or equal to j, and i-j represents the working time period of the air conditioner, namely the total time period; cakRepresenting the instantaneous oil consumption of the air conditioner at a certain point in time within the i-j time period.
The instantaneous oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CakThe unit of the air conditioner is L/h; ceThe unit of the instantaneous fuel injection quantity of the engine is L/h; maRepresents the air conditioner demand torque in units of J; meRepresents the engine demand torque in J.
The arithmetic unit 13 calculates the idle oil consumption, monitors all the time periods in which the idle state continues in the total time period, and counts all the time periods as: p-q, and the total oil consumption in the idling state is recorded as Ct1The idle oil consumption is obtained according to the following formula:
in the formula, CbThe unit of the fuel consumption in idling is L/h; p is not less than k and not more than q; cARepresents the oil consumption of the air conditioner, and the unit is J; if the vehicle uses the automatic start-stop function, the oil consumption of the air conditioner of the vehicle in the idling state is 0, and the formula is as follows:
the arithmetic unit 13 calculates the time consumed by violent driving, monitors all the time periods in which the violent driving state continues in the total time period, and counts all the time periods as follows: s-t, wherein the s-t time period is positioned in the total i-j time period, and the total oil consumption in the violent driving state is recorded as Ct2The fuel consumption for violent driving is obtained according to the following formula:
in the formula, CfThe unit is L/h, which represents the fuel consumption of violent driving; cARepresents the oil consumption of the air conditioner, and the unit is J; wherein s is less than or equal to k is less than or equal to t.
The arithmetic unit 13 calculates the oil consumption time for normal driving, and in the total time period, all the time periods in which the normal driving state lasts are counted as: u-v, wherein the time period of u-v is positioned in the total time period of i-j, and the total oil consumption of the vehicle in the total time period of i-j is recorded as CTThe normal driving oil consumption is obtained according to the following formula:
in the formula, CnThe unit of the fuel consumption of the normal driving is L/h; cTRepresenting the total fuel consumption of the vehicle in the i-j time period; cbThe idle oil consumption of the corresponding idle state time period in the i-j time period is represented; cfThe fuel consumption of violent driving corresponding to the violent driving time period in the time period from i to j is represented; cARepresents the oil consumption of the air conditioner in the i-j time period, wherein i is less than or equal to k is less than or equal to j, in the embodimentIn an example, the total i-j time period is equal to the sum of the p-q time period, the s-t time period, and the u-v time period.
When the operation unit 13 calculates the air conditioner oil consumption ratio, the air conditioner oil consumption ratio is obtained according to the air conditioner oil consumption and the total oil consumption by adopting the following formula:
wherein A represents the air conditioner fuel consumption ratio, CAIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
When the operation unit 13 calculates the idle oil consumption ratio, the idle oil consumption ratio is obtained according to the idle oil consumption and the total oil consumption by adopting the following formula:
wherein B represents the fuel consumption at idle and CbIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
When the operation unit 13 calculates the fuel consumption ratio of the violent driving, the fuel consumption ratio of the violent driving is obtained according to the fuel consumption of the violent driving and the total fuel consumption by adopting the following formula:
wherein F represents the fuel consumption ratio in violent driving, and CfIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
When the operation unit 13 calculates the ratio of the fuel consumption in normal driving, the following formula is adopted to obtain the ratio of the fuel consumption in normal driving according to the fuel consumption in normal driving and the total fuel consumption:
in the formula, N representsOil consumption ratio in normal driving, CnIndicating fuel consumption of the air conditioner, CTIndicating total fuel consumption.
The display unit 14 is used for displaying oil consumption of the air conditioner, oil consumption in idle speed, oil consumption in violent driving, oil consumption in normal driving, proportion of oil consumption of the air conditioner, proportion of oil consumption in idle speed, proportion of oil consumption in violent driving and proportion of oil consumption in normal driving. The display unit 14 may include: the electronic instrument panel of the vehicle, the central control display screen of the vehicle and a mobile terminal (such as an electronic mobile device like a mobile phone and a computer) associated with the vehicle. The monitoring system of the subentry oil consumption of the vehicle can subdivide the total oil consumption of the vehicle into the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption and the normal driving oil consumption, so that a vehicle owner can directly obtain the subentry oil consumption and the data of the subentry oil consumption in the use of the vehicle, great convenience is brought to the vehicle owner, the vehicle owner can improve the driving mode of the vehicle owner on the basis of knowing the condition of the subentry oil consumption, and the effects of reducing the oil consumption, saving energy and reducing emission are achieved.
The communication unit 15 is configured to feed back air conditioner oil consumption, idle oil consumption, intense driving oil consumption, normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the intense driving oil consumption ratio and the normal driving oil consumption ratio to the associated mobile terminal and cloud server, so that a vehicle owner can timely view the ranking intervals of the individual oil consumption and the individual oil consumption ratio of the vehicle in the big data of the associated mobile terminal or cloud server, thereby being capable of knowing oil consumption conditions of various driving states of the vehicle more deeply and specifically, and taking the individual oil consumption and the individual oil consumption ratio as references for improving driving behaviors and reducing oil consumption, thereby more clearly improving and optimizing driving behaviors of the vehicle in different driving states.
In summary, the present invention provides a method for monitoring fuel consumption by items of a vehicle, including: firstly, acquiring the total oil consumption of a vehicle; then acquiring the oil consumption of the air conditioner according to a preset rule; then obtaining idle oil consumption according to the air conditioner oil consumption and the total oil consumption; then obtaining the violent driving oil consumption according to the air conditioner oil consumption and the total oil consumption; then obtaining normal driving oil consumption according to the total oil consumption, the idling oil consumption and the violent driving oil consumption; calculating the ratio of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption respectively; and finally, the oil consumption of the air conditioner, the idling oil consumption, the violent driving oil consumption, the normal driving oil consumption, the ratio of the oil consumption of the air conditioner, the ratio of the idling oil consumption, the ratio of the violent driving oil consumption and the normal driving oil consumption are fed back and displayed, so that an owner can know the oil consumption condition deeply and pertinently, and can guide the driving behavior and even correct some bad driving habits, thereby achieving the aim of reducing the oil consumption, reducing the air pollution in a phase-changing manner and slowing down the greenhouse effect. Further, the present invention also provides a system for monitoring fuel consumption by items of a vehicle, comprising: the intelligent fuel consumption monitoring system comprises an acquisition unit, a judgment unit, an operation unit, a display unit and a communication unit, wherein the operation unit can acquire air conditioner fuel consumption, idle fuel consumption, violent driving fuel consumption, normal driving fuel consumption and the proportion of the air conditioner fuel consumption, the idle fuel consumption, the violent driving fuel consumption and the normal driving fuel consumption relative to the total fuel consumption in a corresponding time period, and the display unit can display the data, so that a vehicle owner can directly acquire data of the proportion of the subentry fuel consumption and the subentry fuel consumption when using the vehicle, the vehicle owner is facilitated, the vehicle owner can improve the driving mode of the vehicle owner on the basis of the condition of the subentry fuel consumption, and the purpose of saving fuel is achieved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (13)
1. A method for monitoring fuel consumption by items of a vehicle is characterized by comprising the following steps:
acquiring the total oil consumption of the vehicle;
calculating according to a preset rule to obtain the oil consumption of an air conditioner of the vehicle;
when the vehicle is in an idling state, obtaining idling oil consumption according to the air conditioner oil consumption and the total oil consumption;
when the longitudinal acceleration or the transverse acceleration of the vehicle is respectively larger than the respective set threshold value, acquiring the violent driving oil consumption in the corresponding time period according to the air conditioner oil consumption and the total oil consumption;
obtaining normal driving oil consumption in a corresponding time period according to the total oil consumption, the idling oil consumption and the violent driving oil consumption;
respectively calculating the ratio of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption in corresponding time periods;
and feeding back and displaying the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving, the oil consumption of normal driving, the oil consumption ratio of the air conditioner, the oil consumption ratio of idling, the oil consumption ratio of violent driving and the oil consumption ratio of normal driving.
2. The method for monitoring the fuel consumption by items of the vehicle according to claim 1, wherein the step of obtaining the fuel consumption of the air conditioner comprises: obtaining the instantaneous fuel injection quantity of an engine, the torque required by the engine and the torque required by an air conditioner of the vehicle; obtaining the instantaneous oil consumption of the air conditioner according to the instantaneous oil injection quantity of the engine, the torque required by the engine and the torque required by the air conditioner; and obtaining the oil consumption of the air conditioner according to the instantaneous oil consumption of the air conditioner.
3. The method for monitoring the fuel consumption per item of the vehicle according to claim 2, wherein the fuel consumption of the air conditioner is obtained according to the following formula:
in the formula, CARepresents the oil consumption of the air conditioner, and the unit is J; k is more than or equal to i and less than or equal to j, and i-j represents the working time period of the air conditioner; cakRepresenting the instantaneous oil consumption of the air conditioner at the k time point in the i-j time period;
the instantaneous oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CakThe unit of the air conditioner is L/h; ceThe unit of the instantaneous fuel injection quantity of the engine is L/h; maRepresents the air conditioner demand torque in units of J; meRepresents the engine demand torque in J.
4. The method for monitoring fuel consumption by items of a vehicle according to claim 1, characterized in that, in the total period, all periods of time during which the idle state continues are monitored, and all periods of time are counted as: p-q, wherein the p-q time period is positioned in the total time period of i-j, and the total oil consumption in the idling state is recorded as Ct1The idle oil consumption is obtained according to the following formula:
in the formula, CbThe unit of the fuel consumption in idling is L/h; p is not less than k and not more than q; cARepresents the oil consumption of the air conditioner, and the unit is J; if the vehicle uses the automatic start-stop function, the oil consumption of the air conditioner of the vehicle in the idling state is 0, and the formula is as follows:
5. the method for monitoring fuel consumption by items of a vehicle according to claim 1, characterized in that, in the total period of time, all periods of time during which the aggressive driving state persists are monitored, and all periods of time are counted as: s-t, wherein the s-t time period is positioned in the total i-j time period, and the total oil consumption in the violent driving state is recorded as Ct2The fuel consumption for violent driving is obtained according to the following formula:
in the formula, CfThe unit is L/h, which represents the fuel consumption of violent driving; cARepresents the oil consumption of the air conditioner, and the unit is J; wherein s is less than or equal to k is less than or equal to t.
6. The method for monitoring the fuel consumption by items of a vehicle according to claim 1, wherein, in the total period, all periods during which the normal driving state continues are counted as: u-v, wherein the time period of u-v is positioned in the total time period of i-j, and the total oil consumption of the vehicle in the total time period of i-j is recorded as CTThe normal driving oil consumption is obtained according to the following formula:
in the formula, CnThe unit of the fuel consumption of the normal driving is L/h; cTRepresenting the total fuel consumption of the vehicle in the i-j time period; cbThe idle oil consumption of the corresponding idle state time period in the i-j time period is represented; cfThe fuel consumption of violent driving corresponding to the violent driving time period in the time period from i to j is represented; cAAnd the oil consumption of the air conditioner in the time period from i to j is shown, wherein i is less than or equal to k and less than or equal to j.
7. The method for monitoring fuel consumption by items of a vehicle according to claim 1, wherein a display unit of the vehicle is used for displaying the total fuel consumption, the fuel consumption of an air conditioner, the fuel consumption at idle speed, the fuel consumption in intense driving, the fuel consumption in normal driving, the proportion of the fuel consumption of the air conditioner, the proportion of the fuel consumption at idle speed, the proportion of the fuel consumption in intense driving and the proportion of the fuel consumption in normal driving; and/or feeding back the total oil consumption, the air conditioner oil consumption, the idle oil consumption, the violent driving oil consumption, the normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio to a related mobile terminal and a cloud server by utilizing a communication unit of the vehicle.
8. A system for monitoring fuel split-consumption of a vehicle, comprising: the device comprises an acquisition unit, a judgment unit, an operation unit, a display unit and a communication unit;
the acquisition unit is used for acquiring the total oil consumption of the vehicle, the speed of the vehicle, the transverse acceleration of the vehicle and the longitudinal acceleration of the vehicle;
the judging unit is used for judging the motion state of the vehicle according to the speed of the vehicle, the lateral acceleration of the vehicle and the longitudinal acceleration of the vehicle;
the operation unit is used for obtaining oil consumption of the air conditioner, oil consumption of idling, oil consumption of violent driving and oil consumption of normal driving, and is also used for obtaining the proportion of the oil consumption of the air conditioner, the oil consumption of idling, the oil consumption of violent driving and the oil consumption of normal driving relative to the total oil consumption in a corresponding time period;
the display unit is used for displaying oil consumption of the air conditioner, idling oil consumption, violent driving oil consumption, normal driving oil consumption, the proportion of the oil consumption of the air conditioner, the proportion of the idling oil consumption, the proportion of the violent driving oil consumption and the proportion of the normal driving oil consumption;
the communication unit is used for feeding back air conditioner oil consumption, idle oil consumption, violent driving oil consumption, normal driving oil consumption, the air conditioner oil consumption ratio, the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio to the associated mobile terminal and the cloud server.
9. The system for monitoring the fuel consumption per item of the vehicle according to claim 8, wherein the obtaining unit obtains an instantaneous fuel injection quantity of an engine, a required torque of the engine and a required torque of an air conditioner of the vehicle; the operation unit obtains the instantaneous oil consumption of the air conditioner according to the instantaneous oil injection quantity of the engine, the torque required by the engine and the torque required by the air conditioner, obtains the oil consumption of the air conditioner according to the instantaneous oil consumption of the air conditioner, obtains the idle oil consumption, the violent driving oil consumption and the normal driving oil consumption according to the oil consumption of the air conditioner and the total oil consumption, and obtains the idle oil consumption ratio, the violent driving oil consumption ratio and the normal driving oil consumption ratio according to the idle oil consumption, the idling oil consumption ratio, the violent driving oil consumption ratio and the total oil consumption.
10. The system for monitoring the fuel consumption by items of a vehicle according to claim 9, wherein the arithmetic unit obtains the fuel consumption of the air conditioner according to the following formula:
in the formula, CARepresents the oil consumption of the air conditioner, and the unit is J; k is more than or equal to i and less than or equal to j, and i-j represents the working time period of the air conditioner; cakRepresenting the instantaneous oil consumption of the air conditioner at a certain point in time within the i-j time period.
The instantaneous oil consumption of the air conditioner is obtained according to the following formula:
in the formula, CakThe unit of the air conditioner is L/h; ceThe unit of the instantaneous fuel injection quantity of the engine is L/h; maRepresents the air conditioner demand torque in units of J; meRepresents the engine demand torque in J.
11. The system for monitoring the fuel consumption by items of a vehicle according to claim 8, wherein the arithmetic unit calculates an idle fuel consumption, monitors all the time periods during which the idle state continues in the total time period, and counts all the time periods as: p-q, wherein the p-q time period is positioned in the total time period of i-j, and the total oil consumption in the idling state is recorded as Ct1The idle oil consumption is obtained according to the following formula:
in the formula, CbThe unit of the fuel consumption in idling is L/h; p is not less than k and not more than q; cARepresents the oil consumption of the air conditioner, and the unit is J; if the vehicle uses the automatic start-stop function, then the vehicle is startedThe oil consumption of the air conditioner of the vehicle in the idling state is 0, and the formula is as follows:
12. the system for monitoring the fuel consumption by items of a vehicle according to claim 8, wherein the arithmetic unit calculates the fuel consumption by intense driving, monitors all the time periods in which the intense driving state continues in the total time period, and counts all the time periods as: s-t, wherein the s-t time period is positioned in the total i-j time period, and the total oil consumption in the violent driving state is recorded as Ct2The fuel consumption for violent driving is obtained according to the following formula:
in the formula, CfThe unit is L/h, which represents the fuel consumption of violent driving; cARepresents the oil consumption of the air conditioner, and the unit is J; wherein s is less than or equal to k is less than or equal to t.
13. The system for monitoring the fuel consumption by items of a vehicle according to claim 8, wherein the computing unit calculates the fuel consumption for normal driving, and counts all the time periods during which the normal driving state continues in the total time period as: u-v, wherein the time period of u-v is positioned in the total time period of i-j, and the total oil consumption of the vehicle in the total time period of i-j is recorded as CTThe normal driving oil consumption is obtained according to the following formula:
in the formula, CnThe unit of the fuel consumption of the normal driving is L/h; cTRepresenting the total fuel consumption of the vehicle in the i-j time period; cbThe idle oil consumption of the corresponding idle state time period in the i-j time period is represented; cfIndicating corresponding aggressive driving times in the i-j time periodFuel consumption for fierce driving of a segment; cAAnd the oil consumption of the air conditioner in the time period from i to j is shown, wherein i is less than or equal to k and less than or equal to j.
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Application publication date: 20210223 |