WO2006018944A1 - 燃料消費量評価システム - Google Patents
燃料消費量評価システム Download PDFInfo
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- WO2006018944A1 WO2006018944A1 PCT/JP2005/013176 JP2005013176W WO2006018944A1 WO 2006018944 A1 WO2006018944 A1 WO 2006018944A1 JP 2005013176 W JP2005013176 W JP 2005013176W WO 2006018944 A1 WO2006018944 A1 WO 2006018944A1
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- Prior art keywords
- fuel consumption
- fuel
- vehicle
- accelerator opening
- speed
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- 239000000446 fuel Substances 0.000 title claims abstract description 625
- 238000011156 evaluation Methods 0.000 title claims abstract description 153
- 230000001133 acceleration Effects 0.000 claims description 63
- 238000005259 measurement Methods 0.000 claims description 19
- 230000003247 decreasing effect Effects 0.000 claims 5
- 238000000034 method Methods 0.000 description 189
- 238000010586 diagram Methods 0.000 description 37
- 238000004364 calculation method Methods 0.000 description 18
- 238000007726 management method Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 238000007405 data analysis Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000013500 data storage Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
- G01F9/02—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine wherein the other variable is the speed of a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/16—Type of output information
- B60K2360/174—Economic driving
-
- 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
- Y02T10/84—Data processing systems or methods, management, administration
Definitions
- the present invention relates to a system for evaluating the driving state of a vehicle, such as fuel consumption per mileage (hereinafter referred to as fuel efficiency), and a large difference in the total vehicle mass between empty and loaded vehicles.
- the present invention relates to a system for evaluating the driving state of vehicles related to fuel consumption such as cars and buses.
- (1) to (3) were judged to be “drivings that worsen fuel consumption” when exceeding a predetermined value. In such a method, if the judgment value is not exceeded, it is not judged as “operation that deteriorates fuel consumption”. However, in reality, fuel efficiency driving should be evaluated according to the degree of each item.
- fuel consumption is a force that depends on the size of the total vehicle mass including cargo or passengers. These gradients and the effect of the size of the total vehicle mass are not reflected.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-362185
- Patent Document 2 Japanese Patent Laid-Open No. 2003-16572
- the present invention is proposed in view of the above-described problems of the prior art, and is an ability to save fuel or consume fuel wastefully relative to the average driving method. Quantitatively, the driver and the driver are based on the obtained data.
- a fuel consumption evaluation system that enables Z or operation managers to provide specific fuel-saving driving instructions, set target values for fuel-saving driving, and consider changes in the total mass of the vehicle. Based on the obtained data without being influenced by traffic flow, it is possible to provide specific fuel-saving driving guidance to drivers and Z or operation managers, especially for drivers. Aiming for fuel-saving driving in real time ⁇ To provide a fuel consumption evaluation system that can provide guidance!
- the fuel consumption evaluation system of the present invention measures the engine speed (N) of a truck (1).
- Control means (10) for evaluating the fuel consumption (Q) is provided with a storage means (11), and a plurality of areas (E1; start acceleration) from the start to the stop of travel E2: Steady travel region, E3: Deceleration region, E4: Idle travel region, and parameters related to fuel consumption for each of the plurality of regions (E1 to E4) (“start acceleration shift up engine speed) N1 and start acceleration accelerator opening al ”Pl,“ Steady running engine speed ⁇ 2 ” ⁇ 2,“ Deceleration coasting ratio ” ⁇ 3,“ Idle running ” Speed V
- the plurality of regions (E1 to E4) are regions in which the vehicle speed (V) or the moving average vehicle speed (Vm) increases with a relatively low speed force increasing the accelerator opening (e) (starting acceleration region E1) Area where the accelerator opening (ex) is reduced (deceleration area E3), the accelerator opening (oc) is relatively small and the engine speed (N) is relatively low, and the area (idle running area E4) And a steady travel region (E2) that does not fall into any of the three regions (El, E3, E4) described above (claim 2).
- the accelerator opening (oc) is increased from the relatively low speed and the vehicle speed (V) or the moving average vehicle speed (Vm) increases (start acceleration area E1).
- the parameters (P1) in) are the engine speed (shift-up engine speed N1) and the accelerator opening (a 1) at the time of gear shift, and in the area (deceleration area E3) where the accelerator opening (a) is reduced.
- the parameter (P3) is the sum of the distance traveled (coasting) (A) and the distance traveled (decelerated) with the brake (decelerated) (A +) This is the ratio (coasting ratio P3) that the distance (A) traveled by stepping on both the accelerator and brake in B)! /, N!
- the parameter (P4) is the vehicle speed (idle travel vehicle speed V4), and the parameter (P2) in the steady travel region (E2) not corresponding to any of the above three regions is the engine speed (steady travel engine speed). N2) (Claim 3).
- the steady travel region (E2) is classified into a high speed travel region (E21) that travels at a predetermined vehicle speed or more over a predetermined distance and a region (E22) that does not correspond to the high speed travel region (E21).
- the parameters (P21) are the engine speed (N), the vehicle speed (V), and the fuel equivalent amount used for acceleration before and after braking (Claim 4).
- the plurality of regions are classified into a region (E5) where the distance from start to stop is a predetermined distance or less and a region not corresponding thereto, and the parameter in the region (E5) which is less than the predetermined distance.
- P5 is a value “(vehicle speed V) 2 Z travel distance S” obtained by dividing the square of the vehicle speed by the travel distance (claim 5).
- the fuel consumption evaluation system of the present invention increases the accelerator opening (oc) from the relatively low speed and increases the vehicle speed (V) or the moving average vehicle speed (Vm) (starting calorie).
- the accelerator opening (ex) is relatively small and the engine speed (N) is relatively low (idle travel region E4), and the steady travel region (E2), the storage means (11) From the data stored in the above-mentioned parameters ("start acceleration shift up engine speed N1 and start acceleration accelerator opening ⁇ 1" ⁇ 1, "steady travel engine speed ⁇ 2" ⁇ 2, "idle travel vehicle speed V4" P4,
- start acceleration shift up engine speed N1 and start acceleration accelerator opening ⁇ 1" ⁇ 1, "steady travel engine speed ⁇ 2" ⁇ 2, "idle travel vehicle speed V4" P4 On the other hand, in the region where the distance to the stop is less than or equal to the predetermined distance, there is a correlation between “(vehicle speed V) 2 Z travel distance S” P5) and fuel consumption (fuel consumption q per unit travel distance
- the fuel consumption (Q) is the travel distance (S in the region (E3)).
- the control means (10) is configured to compare the determined fuel consumption (Q) with an average value (Qm) obtained from data stored in the storage means (11). (Claim 8).
- the control means (10) is configured to compare the determined fuel consumption (Q) with a target value (claim 9).
- the fuel consumption evaluation system of the present invention may be configured to ignore data in a running state in which the determined fuel consumption (Q) is inaccurate (claim 10).
- the inaccurate traveling state is a special traveling state such as, for example, an uphill, a downhill, or repeated ON / OFF operation of an accelerator, which will be described later.
- the fuel consumption evaluation system of the present invention has output means (for example, the display 13, the printer 14, etc.), and is based on the determined fuel consumption (Q), the average value, or the target value. It is configured to output an evaluation (claim 11).
- the fuel consumption evaluation system of the present invention includes an engine speed measuring means (2) for measuring an engine speed (N) of a vehicle (1), and an accelerator position measurement for measuring an accelerator position (a). Means (3), vehicle speed measuring means (4) for measuring vehicle speed (V), fuel flow measuring means (5) for measuring fuel flow rate (Fw), and engine load measurement for measuring engine load (L) Means (6) and the fuel consumption of the vehicle (1) from the measured engine speed (N), accelerator opening ( ⁇ ), vehicle speed (V), fuel flow rate (Fw) and engine load (L). (Q) and a control means (20) for calculating the vehicle mass (m), the control means (20) is provided with storage means (in-vehicle database 7), and a plurality of driving start forces and stoppages are provided.
- the plurality of regions ( ⁇ 1 to ⁇ 4) include a region (start acceleration region E1) in which the vehicle speed (V) or the moving average vehicle speed increases as the accelerator opening degree (hi) increases even with a relatively low speed force.
- the area where the opening is reduced (deceleration area ⁇ 3), the accelerator opening (a) is relatively small, the engine speed ( ⁇ ) is relatively low, and the region (idle running area ⁇ 4) And a steady running region ( ⁇ 2) that does not fall into any of the regions (El, ⁇ 3, ⁇ 4) Section 13).
- the accelerator opening (oc) is increased from the relatively low speed and the vehicle speed (V) or the moving average vehicle speed is increased (start acceleration area E1).
- the parameters (Pl, P2) are the engine speed at the time of gear shift (shift-up engine speed Nl; P1) and accelerator opening ( ⁇ 1; P2), and a region for reducing the accelerator opening ( ⁇ )
- the above parameters (deceleration coasting ratio; ⁇ 5) in the deceleration area ⁇ 3) are the distance traveled (coasted) with both the accelerator and the brake ( ⁇ ) and the distance traveled with the brake (decelerated travel). ( ⁇ ) and the sum of ( ⁇ + ⁇ ) and stepping on both the accelerator and brake!
- the ratio of the distance traveled by ( ⁇ ), where the accelerator opening (hi) is relatively small and Region where engine speed ( ⁇ ) is relatively low (idle running
- the parameter ( ⁇ 6) in the region ⁇ 4) is the vehicle speed, and does not correspond to any of the above three regions, and the parameter ( ⁇ 3) in the steady running region ( ⁇ 2) is the engine speed (steady running engine).
- the rotational speed is ⁇ 2) (claim 14).
- the parameter relating to the fuel consumption between the start and stop is a value obtained by dividing the square of the vehicle speed by the travel distance, that is, “(vehicle speed) 2 km travel distance”.
- the steady travel area ( ⁇ 2) is classified into a high speed travel area that travels at a predetermined vehicle speed over a predetermined distance and a non-applicable area, and data is collected (claim 15).
- the information from the fuel flow rate measuring means (5) is integrated for each of the plurality of regions ( ⁇ 1 to ⁇ 4), and the obtained regions ( ⁇ 1 The integrated value of ⁇ 4) is obtained by adding up the starting force and the stoppage (claim 16).
- the fuel consumption evaluation system of the present invention measures the engine speed (N) of the vehicle (1).
- Fuel flow measurement means (5) that measures engine load measurement means (6) that measures engine load (L), measured engine speed (N), accelerator opening ( ⁇ ), vehicle speed (V ), Fuel flow (Fw) and engine load (L) data storage means (in-vehicle database 7), fuel consumption (Q) and vehicle mass (m )
- the plurality of regions ( ⁇ 1 to ⁇ 4) include a region (start acceleration region E1) in which the vehicle speed (V) or the moving average vehicle speed increases while relatively low-speed force increases the accelerator opening (hi) and the accelerator.
- the area where the opening is reduced (deceleration area ⁇ 3), the accelerator opening (a) is relatively small, the engine speed ( ⁇ ) is relatively low, and the region (idle running area ⁇ 4) And a steady running region ( ⁇ 2) that does not fall into any of the regions (El, ⁇ 3, ⁇ 4) (claim 20).
- the accelerator opening (oc) is increased from the relatively low speed and the vehicle speed (V) or the moving average vehicle speed is increased (start acceleration area ⁇ 1).
- the parameters (Pl, ⁇ 2) are the engine speed during gear shift (shift-up engine speed Nl; ⁇ 1) and accelerator opening ( ⁇ 1; ⁇ 2).
- the parameter relating to the fuel consumption between the start and stop is a value obtained by dividing the square of the vehicle speed by the travel distance, that is, “(vehicle speed) 2 Z travel distance”.
- the steady travel area (E2) is classified into a high speed travel area that travels at a predetermined vehicle speed over a predetermined distance and a non-applicable area, and data is collected (claim 22).
- the information from the fuel flow rate measuring means (5) is integrated for each of the plurality of regions (E1 to E4), and the calculated regions (E1 To the sum of the values of E4) from start to stop (claim 23).
- the recorded operation data is divided into a plurality of areas from the start of travel to the stop. (See Fig. 2), and parameters related to fuel consumption for each of the plurality of regions (see ⁇ E1: Start acceleration region, E2: Steady travel region, E3: Deceleration region, E4: Idle travel region)
- Start acceleration shift up engine speed N1 and start acceleration accelerator opening a 1 ”Pl,“ Steady travel engine speed N2 ”P2,“ Deceleration coasting ratio ”P3,“ Idle travel vehicle speed V 4 ”P4 or“ (Vehicle speed V) 2 Z mileage S ”P5) is set (see Fig.
- Each parameter (Pl, P2, P4, P5) excluding the deceleration coasting ratio (P3) and the fuel consumption (q) per unit distance in each region (E1 to E5) are correlated (correlation in Fig. 5).
- the average value of the fuel consumption for each travel region can be obtained.
- the average value of the fuel consumption for each running region by the correction coefficient (K) as necessary, a more appropriate fuel consumption can be obtained.
- the average value (Qm) with the fuel consumption (Q) obtained from actual operation data how much fuel was saved or how much wasted for average operation Can be obtained quantitatively (see Figure 6) Can also be associated with a specification how the operation of the driver.
- equation 1 shows how much power can be saved with respect to average coasting (when the calculation result is negative) or how much wasted force (when the calculation result is positive). Can be obtained quantitatively.
- a Q Fuel saving amount with respect to the average value (Qm) of fuel consumption in the deceleration area (E3) [Unit: L] (in case of negative value), or (in case of waste amount: positive)
- Equation 1 if the target deceleration coasting rate is used instead of the average deceleration coasting rate, it can be determined whether fuel consumption is saved or wasted for the target.
- the target value of each parameter is averaged + (or
- the level considered as an average may be variable.
- the target level can be made variable.
- the determination of “downhill (downhill)” is based on the case where the accelerator opening is equal to or less than a predetermined value and the engine speed is equal to or higher than a predetermined value, and an acceleration equal to or higher than a predetermined value corresponding to each gear ratio is generated. Downhill (downhill) ".
- the determination of “uphill (uphill)” is determined as “uphill (uphill)” when the accelerator opening is equal to or greater than a predetermined value and the acceleration is equal to or lower than a predetermined value according to each transmission gear.
- (1) and (2) are correlated with the fuel consumption per unit distance (q), they can be evaluated by the processing described above.
- (3) obtain the fuel consumption used for acceleration before and after braking. By subtracting the amount of fuel consumed during normal driving from this amount of fuel consumed, the amount of fuel consumed that has been used in excess can be determined.
- the driver's efforts can be reflected in the driver's evaluation by knowing how much the driver is actually fuel-saving driving by using a quantitative value called fuel consumption.
- driving guidance can be specifically performed in a database.
- the recorded operation data is divided into a plurality of travels from the travel start to the stop. (See Fig. 10), and parameters related to fuel consumption for each of the plurality of regions (see ⁇ E1: Start acceleration region, E2: Steady travel region, E3: Deceleration region, E4: Idle travel region)
- Starting acceleration shift-up engine speed N 1 ”P 1,“ Starting acceleration accelerator opening al ”P2,“ Steady running engine speed ⁇ 2 ” ⁇ 3,“ Vehicle speed (V) 2 Z travel distance ” ⁇ 4,“ Deceleration coasting rate ” ⁇ 5,“ Idle traveling vehicle speed ” ⁇ 6) is set, and the correlation between the parameter ( ⁇ 1 to ⁇ 6) and the fuel consumption ratio ( ⁇ ) by any operation when the average driving method is 100% Based on the fuel consumption rate and the target
- the operation that calculates the fuel consumption ratio addition, actual vehicle total mass, in order to correct the fuel consumption ratio
- the fuel consumption is evaluated not only for the absolute amount but also for the average operation for each parameter. Compared with the method of rotation and target operation, the evaluation is regarded as familiar, and realistic measures can be taken to improve fuel consumption (execution of energy-saving operation).
- the target fuel consumption and the fuel consumption that can be saved can be obtained by the following methods.
- the fuel consumption (Gj) in actual operation is obtained by integrating the fuel flow signal from the vehicle.
- Ga Gj X ⁇ & /
- the fuel consumption (Gt) in the target driving method is obtained by multiplying the fuel consumption (Gj) in the actual driving by the fuel consumption ratio ( ⁇ t) in the target driving method. Then, it is calculated by dividing by the fuel consumption rate (e j) of the actual driving method.
- Fuel consumption that can be saved that is, the difference in fuel consumption in the actual operation and the fuel consumption in the target operation ( ⁇ G) is the fuel consumption in the actual operation.
- the fuel consumption in the target driving method is the fuel that can be saved from the actual fuel consumption. It is obtained by subtracting the total of each factor of consumption.
- the target fuel efficiency is obtained by dividing the mileage by the fuel consumption in the target driving method.
- the target fuel efficiency can be obtained with high accuracy.
- the "target” in the target driving method is, for example, as shown in FIG.
- the value can be obtained by subtracting the standard deviation from the average of the frequency distribution.
- Each data relating to the fuel consumption described above is output from the control means (20) to the output means (22), and how much operation is performed with respect to the target value in each parameter (P1 to P6). Or output power (report) given to the driver and Z or the operation manager in the output data (report) that can be obtained quantitatively. It is possible to provide guidance (advice) on the amount of improvement in fuel consumption.
- the level considered as an average may be variable.
- the target level can be made variable.
- the idling stop time and fuel consumption can be calculated so that advice and management can be provided for wasting fuel during long idling operations (related to parameter P6) while the vehicle is stopped. . By doing so, the driver's intention to save energy In addition to improving knowledge, it also contributes to improving the corporate image of the carrier.
- the driver's efforts can be grasped by comparing the fuel consumption rate with how much fuel-saving driving the driver actually performed compared to the average driving. Can be reflected in the evaluation.
- operation guidance can be provided in a database.
- the recorded operation data is divided into a plurality of travels from the travel start to the stop. (See Fig. 22), and parameters related to fuel consumption for each of the plurality of regions (see ⁇ E1: Start acceleration region, E2: Steady travel region, E3: Deceleration region, E4: Idle travel region)
- Starting acceleration shift-up engine speed N 1 ”P 1,“ Starting acceleration accelerator opening al ”P2,“ Steady running engine speed ⁇ 2 ” ⁇ 3,“ Vehicle speed (V) 2 Z travel distance ” ⁇ 4,“ Deceleration coasting rate ” ⁇ 5,“ Idle traveling vehicle speed ” ⁇ 6) is set, and the correlation between the parameter ( ⁇ 1 to ⁇ 6) and the fuel consumption ratio ( ⁇ ) by any operation when the average driving method is 100% Based on the fuel consumption rate and the target
- the operation that calculates the fuel consumption ratio addition, actual vehicle total mass, in order to correct the fuel consumption
- the fuel consumption is evaluated not only for the absolute amount but also for each parameter. Compared with the method of rotation and target operation, the evaluation is regarded as familiar, and realistic measures can be taken immediately for fuel cost improvement (execution of energy-saving operation).
- the target fuel consumption and the fuel consumption that can be saved can be obtained by the following methods.
- the fuel consumption (Gj) in actual operation is obtained by integrating the fuel flow signal from the vehicle.
- Ga Gj X ⁇ & /
- the fuel consumption (Gt) in the target driving method is obtained by multiplying the fuel consumption (Gj) in the actual driving by the fuel consumption ratio ( ⁇ t) in the target driving method. Then, it is calculated by dividing by the fuel consumption rate (e j) of the actual driving method.
- Fuel consumption that can be saved that is, the difference in fuel consumption in the actual operation and the fuel consumption in the target operation ( ⁇ G) is the fuel consumption in the actual operation.
- the fuel consumption in the target driving method is the fuel that can be saved from the actual fuel consumption. It is obtained by subtracting the total of each factor of consumption.
- the target fuel efficiency is obtained by dividing the mileage by the fuel consumption in the target driving method.
- the target fuel efficiency can be obtained with high accuracy.
- the “target” in the target driving method is, for example, as shown in FIG.
- the value can be obtained by subtracting the standard deviation from the average of the frequency distribution.
- Each data relating to the fuel consumption described above is output from the control means (20) to the output means (22), and how much operation is performed with respect to the target value in each parameter (P1 to P6). Or output power (report) given to the driver and Z or the operation manager in the output data (report) that can be obtained quantitatively. It is possible to provide guidance (advice) on the amount of improvement in fuel consumption.
- the level considered as an average may be variable.
- the target level can be made variable.
- Fuel is wasted during idling for a long time while stopped (related to parameter P6).
- it is possible to obtain the idling stop time and fuel consumption. By doing so, it will increase the driver's awareness of energy-saving driving and contribute to improving the corporate image of the carrier.
- the driver's efforts can be grasped by comparing the fuel consumption rate with how much fuel-saving driving the driver actually performed compared to the average driving. Can be reflected in the evaluation.
- operation guidance can be provided in a database.
- the first embodiment of the fuel consumption evaluation system is an engine speed measuring means for measuring the engine speed N of the truck 1 (hereinafter, the engine speed measuring means is referred to as an engine speed sensor). 2) Accelerator opening measurement means for measuring accelerator opening oc (hereinafter referred to as accelerator opening measuring means) 3.
- Vehicle speed measuring means for measuring vehicle speed V (hereinafter referred to as vehicle speed measurement) 4), fuel flow measurement means for measuring the fuel flow rate Fw (hereinafter, fuel flow measurement means is referred to as a fuel meter) 5, measured engine speed N, accelerator opening oc, vehicle speed V, Control means for evaluating the fuel consumption Q of the lorry 1 from the fuel flow rate Fw (hereinafter, the control means is referred to as the control unit) 10 It is constituted by.
- the control unit 10 includes storage means (hereinafter, the storage means is referred to as a database) 11 mounted on the vehicle 1 to be evaluated 11, for example, a computer main body 12 provided in a sales office, a display 13, and an input means 14. It has a printer 15 and a memory card 16 that can be carried by a driver.
- storage means hereinafter, the storage means is referred to as a database
- the control unit 10 classifies until the start of driving force is stopped into four areas in the illustrated example: a start acceleration area El, a steady travel area E2, a deceleration area E3, and an idle travel area E4.
- the parameters related to the fuel consumption Q are ⁇ start acceleration shift up engine speed N1 and accelerator opening ⁇ 1 '' P1, ⁇ steady traveling engine speed ⁇ 2 '' ⁇ 2, “Deceleration coasting ratio” ⁇ 3, “Idle travel vehicle speed V4” P4 is set, and the correlation between these parameters P1 to P4 and fuel consumption (fuel consumption per unit travel distance) q (correlation line F in Fig. 5)
- the fuel consumption amounts Q1 to Q4 for each of the plurality of regions E1 to E4 are determined, and the evaluation is performed based on the determined fuel consumption amounts Q1 to Q4.
- the parameter “(vehicle speed V) 2 Z travel distance S” P5 means that the characteristic line in the characteristic diagram showing the relationship of the square of the vehicle speed V to the travel distance S in FIG.
- the characteristic line b shows that if the vehicle speed is increased more than necessary, a large amount of energy is required, and that energy is thrown away as the heat of the brake when decelerating. It shows how energy is wasted. That is, the region force surrounded by the a line and the b line shows the wasteful energy for the average acceleration * deceleration.
- the characteristic line c is a diagram conceptually imagining that energy is saved for the region surrounded by the a-line and the c-line because only the minimum necessary energy is input during acceleration, for example.
- Dividing the square of the vehicle speed V by the mileage S is because each case does not necessarily have the same distance. Since it doesn't run, it is compared with the unit distance, and the comparison is fair.
- the parameters P1 to P5 are easily associated with the manner of operation, and the accuracy of each fuel consumption Q calculated based on these parameters is improved.
- the vehicle has been improved year by year to match the performance of such an improved vehicle 1. It can be a database.
- Each parameter except the deceleration coasting ratio P3 “start acceleration shift up engine speed N1 and accelerator opening ⁇ 1” ⁇ 1, “steady running engine speed ⁇ 2” ⁇ 2, “idle running vehicle speed V4” ⁇ 4, or “(Vehicle speed V) 2 ⁇ Travel distance S” P5 has a correlation with the fuel consumption (fuel consumption q per unit distance) in each region (El ⁇ ).
- the following shows a case where the normal running distance of 2000 km is exceeded in actual operation and the steady running engine speed N is l lOOrpm.
- the amount of fuel consumed for the average operation is calculated. It is possible to quantitatively determine how much was saved or how much wasted. It can also be associated with how the driver is driving.
- equation 1 shows how much power can be saved with respect to average coasting (when the calculation result is negative) or how much force is wasted (when the calculation result is positive). Case) can be obtained quantitatively.
- ⁇ Q Fuel saving amount relative to average value Qm of fuel consumption in deceleration region [Unit: L] (in case of negative value), (or waste amount: in case of positive)
- the target value of each parameter is determined as the average + (or one) 0. ⁇ ⁇ (standard deviation).
- the target fuel consumption q per unit distance can be obtained for each time. Furthermore, by comparing these target values with actual operation data, it is possible to quantitatively grasp how superior or inferior the driver's driving method and fuel consumption are to the target values. I can do it.
- the level considered as an average can be made variable.
- the target level can be made variable.
- downhill (downhill) is determined by determining that the accelerator opening ⁇ (see FIG. 2) detected by the accelerator opening sensor (reference numeral 3 in FIG. 1) is less than a predetermined value and the engine speed ⁇ ⁇ is predetermined. In the case where the value is greater than or equal to the value, a case where acceleration greater than or equal to a predetermined value corresponding to each transmission gear ratio is determined as “downhill (downhill)”.
- Deceleration coasting rate can be determined appropriately.
- the determination of “uphill (uphill)” is determined as “uphill (uphill)” when the accelerator opening ⁇ is equal to or larger than a predetermined value and the acceleration is equal to or lower than a predetermined value according to each transmission gear.
- (1) and (2) are correlated with the fuel consumption q per unit distance, they can be evaluated by the processing described above.
- step Sl the program is started, and the operation data recorded in the in-vehicle database 11 so far is read by, for example, the memory card 16 (step Sl).
- the data copied to the memory card 16 is inserted into the sales office computer 12 by inserting the memory card 16 into a predetermined operation, and the computer 12 calculates the operating fuel consumption Q, the operating distance S, and the fuel consumption q. (Step S2).
- step S3 the processing is divided into each travel region (start acceleration region El, steady travel region E2, deceleration region E3, idle travel region E4) (step S3), and fuel-saving operation in the start acceleration region E1 is performed.
- Evaluation calculation (step S4) evaluation calculation of fuel-saving operation in the steady driving range E2 (step S5), evaluation calculation of fuel-saving driving in the deceleration region E3 (step S6), saving in the idle driving region E4
- the fuel economy driving evaluation calculation (Step S7) and the fuel saving driving evaluation calculation (Step S8) in the start / stop zone are sequentially performed.
- step S9 the average fuel consumption Qm and the fuel consumption (consumption per distance) q are calculated (step S9), and then the target values for the fuel consumption and the fuel consumption are calculated (step S9). (Step S10)
- step S11 the operation fuel consumption Q and the fuel consumption q are compared with the target values calculated in steps S9 and S10, and the driving evaluation is performed. Finally, the above results are created as an operation advice report (step S12), and all controls (evaluation process) are completed.
- the driver's efforts can be reflected in the driver's evaluation by knowing how much the driver is actually fuel-saving driving by using a quantitative value called fuel saving.
- driving guidance can be specifically performed in a database.
- the engine rotation sensor 2, the accelerator opening sensor 3, the vehicle speed sensor 4, and the fuel flow meter 5 as means for detecting each parameter are mounted on the vehicle by dedicated circuits. This is an embodiment connected to the database 11.
- the accelerator signal, the fuel flow rate signal, the vehicle speed signal, and the engine speed signal are collected as digital signals to the LAN repeater 6 by the in-vehicle communication network “in-vehicle LAN” in advance. It is configured to be stored in the in-vehicle database 11 by a wire (communication cable) W. Except for these configurations, the operation and effects are substantially the same as those of the first embodiment shown in FIGS. 1 to 7, and the subsequent description is omitted.
- the data recorded in the equipment U1 on the vehicle side, the equipment U2 on the management side, and the equipment U1 on the vehicle side are transferred to the equipment U2 on the management side.
- the memory card 15 is a transfer means for sending.
- the management side refers to, for example, a vehicle management department of a transportation company that owns the vehicle.
- the vehicle-side equipment U1 is an engine speed measuring means for measuring the engine speed N of a vehicle (a truck in the illustrated example) 1 (hereinafter, the engine speed measuring means is referred to as an engine speed sensor) 2 And an accelerator opening measuring means for measuring the accelerator opening ⁇ (hereinafter, the accelerator opening measuring means is referred to as an accelerator opening sensor) 3 and a vehicle speed measuring means for measuring the vehicle speed V (hereinafter referred to as a vehicle speed measuring means).
- Fuel flow measurement means for measuring the fuel flow rate Fw (hereinafter referred to as fuel meter) 5)
- Engine load measurement means for measuring the engine load L (hereinafter referred to as engine load measurement) 6) and on-vehicle storage means for storing the measured engine speed N, accelerator opening a, vehicle speed V, fuel flow rate Fw, and engine load L as vehicle signals (hereinafter referred to as on-vehicle
- the storage means is composed of an in-vehicle database and u) 7.
- the vehicle data is input via the memory card 15, and the measured engine speed N, the accelerator opening ⁇ , the vehicle speed V, the fuel flow, and the vehicle data.
- the printer 22 is an output means for outputting the evaluation results
- the keyboard 24 is an input means attached to the control unit 20.
- control unit 20 is configured to start and stop the driving force, in the illustrated example, the start acceleration region El, the steady travel region E2, the deceleration region E3, and the idle travel region E4. Classify into areas.
- the parameters related to the fuel consumption Q are "start acceleration shift up engine speed N 1" P 1, "start acceleration accelerator opening al” P2, Set the travel engine speed ⁇ 2 '' ⁇ 3, ⁇ Vehicle speed (V) 2 Z travel distance '' ⁇ 4, ⁇ Deceleration coasting ratio '' ⁇ 5, ⁇ Idle traveling vehicle speed '' ⁇ 6, and set the parameters ⁇ 1 to ⁇ 6 and the average driving method Based on the correlation with the fuel consumption ratio when it is 100% (correlation line F in Fig. 12), the fuel consumption ratio is determined for each of the plurality of areas ⁇ 1 to ⁇ 4, and the determined fuel consumption It is structured to evaluate based on the ratio ⁇ !
- the parameters P1 to P6 are easily associated with the manner of operation, and the accuracy of each fuel consumption Q calculated based on these parameters is improved.
- the vehicle In addition to improving the accuracy of a new database that can be added to such a database (not shown) in the sequential control unit 20, the vehicle has been improved year by year and matched the performance of such an improved vehicle 1. It can be used as a database come.
- the fuel consumption rate j in actual driving is obtained by the same method, it is 105% in the illustrated example.
- the quantity of evaluation related to fuel consumption is the average driving method.
- the percentage of fuel consumption when% is expressed as ⁇ !
- the specific target fuel consumption and the fuel consumption that can be saved can also be calculated.
- the fuel consumption Gj in actual operation is obtained by integrating the fuel flow rate signal from the fuel meter 5 or the engine control unit (not shown).
- Ga Gj X la / lj
- Fuel consumption Gt in the target driving method is calculated by multiplying the fuel consumption amount Gj in the actual operation by the fuel consumption rate t in the target driving method, and then Obtained by dividing by the fuel consumption ratio ⁇ j of the manufacturer.
- Fuel consumption that can be saved that is, the difference between the fuel consumption in the actual operation and the fuel consumption in the target operation ⁇ G is the fuel consumption Gj in the actual operation. Calculate by reducing the fuel consumption Gt in the target driving method.
- the fuel consumption in the target driving method is obtained by subtracting the total of each fuel consumption factor that can be saved from the actual fuel consumption.
- the target fuel efficiency is obtained by dividing the mileage by the fuel consumption in the target driving method.
- the target fuel efficiency can be obtained with high accuracy.
- Fig. 13 is a correlation diagram showing the relationship between the driving method and the fuel consumption rate in the fixed volume state
- Fig. 14 shows the relationship between the driving method and the fuel consumption rate in the empty state. It is a correlation diagram showing the relationship.
- the ratio of fuel consumption is 103% in actual operation compared to the average driving method, and the ratio of fuel consumption is 92% in the target driving method.
- the ratio of fuel consumption is 105% in actual operation, and the ratio of fuel consumption is 90% in the target driving method, and the difference to the average driving method is widening.
- Fig. 15 the fixed volume and the total vehicle mass of empty vehicles are known, and the fuel consumption rate in actual operation is also determined as 105% and 103%, respectively, according to Figs. Aj point of product and Bj point of empty car are obtained. If Aj point and Bj point are connected by straight line FF and the position of the total mass of the vehicle during actual operation is selected on that line, the fuel consumption ratio 104% is read when the average driving method at that time is 100% I can do it.
- Fig. 16 the total vehicle mass of the fixed volume and the empty vehicle is known, and the fuel consumption ratio in the target driving method is also calculated as 90% and 92%, respectively, according to Figs. 13 and 14.
- the fixed point At point and the empty Bt point are obtained. If the At point and Bt point are connected by a straight line FF and the position of the total vehicle mass in the target driving method on that line is selected, the fuel consumption rate when the average driving method at that time is 100% 91 % Can be read.
- the total vehicle mass m can be determined, for example, by the following method.
- the engine load (L) is, for example, the engine torque
- the vehicle driving force (tire rotational force) is the gear ratio of the power transmission system (transmission, differential) and the mechanical efficiency of each transmission system. It is obtained by knowing the tire radius and the friction coefficient of the tire.
- the in-vehicle database 7 and the control unit U2 on the management side (analysis PC) 20 are configured to be able to send and receive data via wireless communication, and vehicle measurements were taken.
- Various data recorded in the in-vehicle database shall be input to the control unit 20 immediately.
- step S1 operation data (engine speed N, accelerator opening, vehicle speed V, fuel flow rate Fw, and engine load L) are read. Proceeding to step S2, the in-vehicle database 7 or the control unit 20 on the management side determines whether or not the vehicle is stopped. If the vehicle is stopped (YES in step S2), the process proceeds to the next step S3. If the vehicle is not stopped (NO in step S2), the control is restored.
- step S3 the operating fuel consumption, travel distance, and fuel consumption are calculated from the vehicle data, and then the process proceeds to step S4 to calculate the total mass m of the operating vehicle by the method described above.
- step S5 for each parameter (P1 to P6) of driving method, the ratio of fuel consumption of actual driving method is calculated when the fuel consumption of average driving method is 100%. To do.
- step S6 for each parameter (P1 to P6) of the driving method, the fuel consumption ratio of the target driving method when the fuel consumption of the average driving method is set to 100%. Is calculated.
- step S7 the process is divided into the travel regions (E1; start acceleration region, E2; steady travel region, E3; deceleration region, E4: idle travel region).
- step S9 an evaluation of fuel-saving driving in the steady driving region E2 is calculated.
- step S10 the evaluation of the fuel saving operation in the deceleration region E3 is calculated.
- step S11 an evaluation of fuel-saving driving in the idle driving region E4 is calculated.
- step S12 the evaluation of the fuel saving operation in E1 to E4, that is, the section from start to stop is calculated.
- step S13 (1) average fuel consumption and fuel consumption (total of factors of each driving method) are calculated.
- step S14 (2) target fuel consumption and fuel consumption (total of parameters for each driving method) are calculated.
- step S15 the actual operating fuel consumption and fuel consumption are compared with the calculation results of (1) and (2) to calculate driving evaluation (add evaluation).
- step S16 various data relating to the fuel consumption obtained in step S15 and the evaluation of operation are summarized as a report in a predetermined format, for example, and output to the printer 22 for the driver and the vehicle. Presented to the operation manager.
- FIG. 18 is a radar chart showing a part of the fuel-saving driving diagnosis report output as a summary of the fuel-saving driving evaluation. According to Figure 18, on general roads, the power to keep good driving in order to achieve fuel saving. On highways, the engine speed range, brake operation, and travel speed are all over the parameters. Demonstrate that there is room for improvement.
- the report may optionally output the actual fuel consumption, the amount of fuel saved for the average driving method, and the amount saved at that time. .
- the amount of fuel saved or the amount of wasted power can be obtained quantitatively and accurately with respect to the average operation for each area obtained by this method. It can also be associated with how the driver is driving.
- the average driving method when the average driving method is set to 100%, the fuel consumption ratio in actual operation is obtained, and the average driving method or The amount of fuel saved or how much wasted can be quantitatively and accurately grasped for the target driving method.
- Guidance can be made quantitatively or compared to the average driving method and target driving method.
- the driver's efforts can be grasped in the driver's evaluation by knowing how much the driver actually performed the fuel-saving driving by the quantitative value called the fuel saving amount.
- driving guidance can be specifically performed in a database.
- the level considered as an average can be made variable.
- the target level can be made variable.
- the engine rotation sensor 2, the accelerator opening sensor 3, the vehicle speed sensor 4, and the fuel flow meter 5, which are the detection means for each parameter, are respectively in-vehicle database 7 using dedicated circuits. It is embodiment connected to.
- the accelerator signal, the fuel flow signal, the vehicle speed signal, and the engine speed signal are collected in advance as digital signals in the LAN device 8 by the in-vehicle communication network “in-vehicle LAN”. It is configured to be stored in the in-vehicle database 7 by the cable W. Except for these configurations, the operation and effects are substantially the same as those of the third embodiment shown in FIGS. 9 to 18, and the subsequent description is omitted.
- the fifth embodiment of the fuel consumption evaluation system includes a vehicle (1) -side equipment U1 and a management-side equipment U2.
- the management side refers to, for example, a vehicle management department of a transportation company that owns the vehicle.
- the vehicle-side equipment U1 is an engine speed measuring means for measuring the engine speed ⁇ ⁇ of a vehicle (a truck in the illustrated example) 1 (hereinafter, the engine speed measuring means is referred to as an engine speed sensor) 2 And an accelerator opening measuring means for measuring the accelerator opening ⁇ (hereinafter, the accelerator opening measuring means is referred to as an accelerator opening sensor) 3 and a vehicle speed measuring means for measuring the vehicle speed V (hereinafter referred to as a vehicle speed measuring means).
- fuel flow measuring means (Referred to as a vehicle speed sensor) 4 and the fuel flow rate for measuring the fuel flow rate Fw Measuring means (hereinafter, fuel flow measuring means is referred to as a fuel meter) 5, engine load measuring means for measuring engine load L (hereinafter, engine load measuring means is engine load sensor t, 6), and onboard control Consists of means 10 and
- the in-vehicle control means 10 includes an interface 9, a control unit 11, a monitor 12 as a display means, an in-vehicle database 7 as a storage means, a wireless antenna 13, and power. It is configured.
- the interface 9 and the in-vehicle database 7 are connected by the line L1, and the in-vehicle database 7 and the control unit 11 are connected by the line L2, and the control unit 11 and the monitor 1 are connected.
- control unit 11 and the interface 9 are connected to each other by the line L3 and the line L4.
- Each vehicle signal of the engine load L is stored in the in-vehicle database 7 through the interface 9 and the line L1.
- the control unit 11 selects and extracts all or all of the vehicle signals from the in-vehicle database 7 via the line L2 as appropriate.
- the management side equipment U2 described later is the power to send and receive data wirelessly.
- the vehicle data is taken out from the in-vehicle database 7 by the memory card 15 and recorded in the memory card 15. It is also possible to send the vehicle data to the management side.
- the management-side equipment U2 outputs the evaluation result by the management-side control means (hereinafter, the management-side control means is referred to as a fuel efficiency data analysis personal computer 20) and the fuel efficiency data analysis personal computer 20.
- the printer 22 is an output means that outputs the data and the keyboard 24 is an input means that accompanies the control unit 20.
- the fuel efficiency data analysis personal computer 20 receives the vehicle data via the network N and the wireless antenna 23, and the measured engine speed N, accelerator opening oc, vehicle speed V, fuel flow rate Fw, engine From the load, the total vehicle mass m and fuel Fuel consumption Q is calculated, and the fuel consumption when the average operation is performed by the method described later and the fuel consumption according to the target operation method are compared, and the fuel consumption that has been achieved by the appropriate operation method or saving Constructed to evaluate the amount! RU
- the fuel efficiency data analysis personal computer 20 performs from the start to the end of travel, in the illustrated example, the start acceleration region El, the steady travel region E2, the deceleration region E3, and the idle travel region E4. It is classified into four areas.
- the parameters related to the fuel consumption Q are "start acceleration shift up engine speed N 1" P 1, "start acceleration accelerator opening al” P2, Set the travel engine speed ⁇ 2 '' ⁇ 3, ⁇ Vehicle speed (V) 2 Z travel distance '' ⁇ 4, ⁇ Deceleration coasting ratio '' ⁇ 5, ⁇ Idle traveling vehicle speed '' ⁇ 6, and set the parameters ⁇ 1 to ⁇ 6 and the average driving method Based on the correlation with the fuel consumption ratio ⁇ (correlation line F in Fig. 24) when 100% is set, the fuel consumption ratio is determined for each of the plurality of regions ⁇ 1 to ⁇ 4, and the determined fuel consumption It is configured to evaluate based on the quantity ratio ⁇ !
- the parameters P1 to P6 are easily associated with the manner of operation, and the accuracy of each fuel consumption Q calculated based on these parameters is improved.
- each operation parameter is processed by processing such a lot of operation data close to the normal distribution.
- the average value of the frequency distribution of parameters P1 to P6 and the degree of variation can be grasped.
- the vehicle has been improved year by year. It can be a database that matches the performance of the improved vehicle 1.
- the fuel consumption rate j in actual driving is obtained by the same method, it is 105% in the illustrated example.
- the quantity of fuel consumption evaluation is the average driving method.
- the percentage of fuel consumption when% is expressed as ⁇ !
- the fuel consumption amount Gj in actual operation is obtained by integrating the fuel flow rate signal from the fuel meter 5 or an engine control unit (not shown).
- Ga Gj X ⁇ & /
- Fuel consumption in the target driving method Gt is the fuel consumption in the actual operation. Multiply the amount Gj by the fuel consumption rate t for the target driving method, and then divide it by the fuel consumption rate j for the actual driving method.
- Fuel consumption that can be saved that is, the difference between the fuel consumption in the actual operation and the fuel consumption in the target operation ⁇ G is calculated from the fuel consumption Gj in the actual operation. Calculate by reducing the fuel consumption Gt in the target driving method.
- the fuel consumption in the target driving method is obtained by subtracting the total of each fuel consumption factor that can be saved from the actual fuel consumption.
- the target fuel efficiency is obtained by dividing the mileage by the fuel consumption in the target driving method.
- the target fuel efficiency can be obtained with high accuracy.
- Fig. 25 is a correlation diagram showing the relationship between the driving method and the fuel consumption rate in the fixed volume state
- Fig. 26 shows the relationship between the driving method and the fuel consumption rate in the empty state. It is a correlation diagram showing the relationship.
- the ratio of fuel consumption is 103% in actual driving compared to the average driving method, and the ratio of fuel consumption is 92% in the target driving method.
- the ratio of fuel consumption is 105% in actual operation, and the ratio of fuel consumption is 90% in the target driving method, and the difference to the average driving method increases.
- Fig. 27 the fixed volume and the total vehicle mass of empty vehicles are known, and the fuel consumption ratio in actual operation is also determined as 105% and 103%, respectively, according to Figs. 25 and 26. Aj point of product and Bj point of empty car are obtained. If Aj point and Bj point are connected by straight line FF and the position of the total mass of the vehicle during actual operation is selected on that line, the fuel consumption ratio 104% is read when the average driving method at that time is 100% I can do it.
- Fig. 28 the fixed volume and the total vehicle mass of the empty vehicle are known, and the fuel consumption ratio in the target driving method is also determined as 90% and 92%, respectively, according to Figs. 25 and 26.
- the fixed point At point and the empty Bt point are obtained. If the At point and Bt point are connected by a straight line FF and the position of the total vehicle mass in the target driving method on that line is selected, the fuel consumption rate when the average driving method at that time is 100% 91 % Can be read.
- the total vehicle mass m can be obtained, for example, by the following method.
- the driving force of the vehicle is the gear ratio of the power transmission system (transmission, differential) and the mechanical efficiency of each transmission system, assuming that the engine load (L) is, for example, the engine torque. It is obtained by knowing the tire radius and the friction coefficient of the tire.
- the acceleration ⁇ can be obtained from the vehicle speed V obtained by the vehicle speed sensor 4.
- step S1 operation data (engine speed N, accelerator position, vehicle speed)
- step S2 the instantaneous accelerator opening is displayed on the monitor 12 of the vehicle-mounted control means 10, and the instantaneous fuel consumption is further displayed (step S3).
- Fig. 30 shows the display (monitor) screen Mdl during travel.
- the achievement level display M15 indicating the ratio of the achievement level of fuel consumption and the saving amount display M16 indicating the fuel saving amount are formed.
- step S4 the control unit 11 of the in-vehicle control means 10 determines whether or not the vehicle is stopped. If the vehicle is stopped (YES in step S2), the process proceeds to the next step S5. If the vehicle is not stopped (NO in step S2), the control is restored.
- step S5 after calculating the operating fuel consumption, travel distance, and fuel consumption from the vehicle data, the process proceeds to step S6, and the total vehicle mass m in operation is calculated by the method described above.
- step S7 for each parameter (P1 to P6) of the driving method, the fuel consumption ratio of the actual driving method is calculated when the fuel consumption of the average driving method is 100%. To do.
- step S8 for each parameter (P1 to P6) of the driving method, the fuel consumption ratio of the target driving method when the fuel consumption of the average driving method is assumed to be 100%. Is calculated.
- step S9 the process is divided into the travel regions (E1; start acceleration region, E2: steady travel region, E3: deceleration region, E4: idle travel region).
- step SI 1 an evaluation of fuel-saving driving in the steady travel region E2 is calculated, and step S
- the fuel-saving driving evaluation in the idle driving region E4 is calculated in step S13.
- axle opening display (accelerator opening is zero) Mi l
- instantaneous fuel consumption display M12 instantaneous fuel consumption display M12
- advice content "Let's use coasting driving” Ma3 Is displayed.
- step S15 (1) average fuel consumption and fuel consumption (total of factors for each driving method) are calculated.
- step S16 (2) target fuel consumption and fuel consumption (total of parameters for each driving method) are calculated.
- step S17 the actual operation fuel consumption and fuel consumption are compared with the calculation results of (1) and (2) to calculate driving evaluation (add evaluation).
- FIG. 34 and FIG. 35 are display screens Msl and Ms2 displayed for each stop, respectively.
- the screen force S (from FIG. 34 to FIG. 35 or from FIG. 35 to FIG. 34) is switched to each other by pressing the panel switch Sw in the upper left corner of the screen.
- Fig. 34 the accelerator opening display M21, shift-up engine speed M22, steady running engine speed M23, coasting utilization level M24, and traveling vehicle speed M25 are shown as percentage bar graphs with the target achievement rate set at 100%. /!
- Fig. 35 shows the points of fuel saving, and the advice content “Let's suppress the depression of the accelerator” Ma4, the average axle opening display M31 with the target value and the fuel consumption display M32 are digitally displayed. is doing. In addition, the transition of operation evaluation M33 is displayed in bar graphs every 10 km up to 5 Okm!
- step S18 various data on the fuel consumption obtained in step S17, and
- the printer is summarized as a report in a predetermined format, and the printer
- Fig. 36 is a fuel-saving driving diagnosis report R output as a summary of the fuel-saving driving evaluation.
- the report R in Figure 36 includes a radar chart R1, a comprehensive evaluation column R2 that covers fuel consumption, a fuel saving advice column R3, R4, a fuel savings display column R5, and a general summary column R6. It is
- Radar chart R1 is accelerator operation rl, upshift operation r2, traveling vehicle speed r3, engine speed r4, brake operation r5, traveling vehicle speed r6 on highway, brake operation r7 on highway, highway
- the 8 items of vehicle speed fluctuation r8 in Fig. 8 are the evaluation items, and in the example shown, a 10-level evaluation is performed. 10 is (good) and 0 is (bad).
- Fuel saving advice column In R3 and R4, R3 displays, for example, the level of the traveling vehicle speed, the effect on fuel saving, and further measures for fuel saving.
- the secret measure for further fuel saving is displayed.
- the fuel saving amount display column R5 the fuel saving amount and the target fuel saving amount are compared with each other for each operation parameter, and are shown as a bar graph as an actual quantity.
- General summary column R6 displays a general summary on the driving method.
- comparison data D between the target value dl of accelerator opening for start acceleration and actual operation (driving operation) d2 can be output.
- Evaluation of fuel consumption is displayed in real time by the on-vehicle display means (monitor 12), so fuel-saving driving can be learned through OJT (On The Job Training).
- the method of improving the specific operation method and the cost of improving the fuel consumption obtained by the improvement method are quantitatively or averaged. Compared with driving methods and target driving methods, guidance can be provided.
- the driver's efforts can be reflected in the driver's evaluation by knowing how much the driver is actually fuel-saving driving by using a quantitative value called fuel saving.
- driving guidance can be provided in a database.
- the level considered as an average can be made variable.
- the target level can be made variable.
- the engine rotation sensor 2, the accelerator opening sensor 3, the vehicle speed sensor 4, and the fuel flow meter 5, which are detection means for each parameter, are respectively provided in an in-vehicle database 7 using dedicated circuits. It is embodiment connected to.
- the accelerator signal, the fuel flow rate signal, the vehicle speed signal, and the engine speed signal are collected in advance by the in-vehicle communication network “In-vehicle LAN” as digital signals to the LAN device 8 for communication.
- In-vehicle database 7 by cable W It is configured to be stored. Except for these configurations, the operation and effects are substantially the same as those of the fifth embodiment shown in FIGS. 20 to 37, and the subsequent description is omitted.
- FIG. 1 is a block diagram showing a configuration of a fuel consumption evaluation system according to a first embodiment of the present invention.
- FIG. 2 is a characteristic diagram in which the traveling region is divided into four regions and the evaluation parameters are associated with the traveling distance (traveling process) in implementing the present invention.
- FIG. 3 is an explanatory diagram for explaining the magnitude of vehicle speed as the magnitude of kinetic energy.
- FIG. 4 is a frequency distribution diagram showing a frequency distribution of evaluation parameters in the present invention.
- FIG. 5 is a correlation diagram showing the relationship between each evaluation parameter and fuel consumption per unit mileage.
- FIG. 6 An explanatory diagram summarizing how to calculate fuel consumption in a table.
- FIG. 7 is a flowchart showing an evaluation procedure of the present invention.
- FIG. 8 is a block diagram showing a configuration of a fuel consumption evaluation system according to a second embodiment of the present invention.
- FIG. 9 is a block diagram showing a configuration of a fuel consumption evaluation system according to a third embodiment of the present invention.
- FIG. 10 is a characteristic diagram in which the traveling region is divided into four regions and the evaluation parameters are associated with the traveling distance (traveling process) in carrying out the third embodiment of the present invention.
- FIG. 11 is a frequency distribution diagram showing a frequency distribution of evaluation parameters in the third embodiment of the present invention.
- FIG. 12 is a correlation diagram showing the relationship between each evaluation parameter and the fuel consumption ratio ⁇ in any driving method when the average driving method is 100%.
- FIG. 13 A correlation diagram showing the relationship between each evaluation parameter and the fuel consumption ratio in an arbitrary driving method in a fixed volume state when the average driving method is 100%.
- FIG. 14 is a correlation diagram showing the relationship between each evaluation parameter and the fuel consumption ratio in an arbitrary driving method in an empty state when the average driving method is 100%.
- FIG. 15 Correlation diagram for determining the fuel consumption rate in the actual driving method for an arbitrary gross vehicle mass.
- ⁇ 17 A control flowchart for explaining the fuel consumption evaluation method in the first embodiment.
- ⁇ 18 Radar chart showing a part of the fuel-saving driving diagnosis report output as a summary of fuel-saving driving evaluation.
- FIG. 19 is a block diagram showing the overall configuration of the fourth embodiment.
- ⁇ 20 Block diagram showing the configuration of the fuel consumption evaluation system according to the fifth embodiment of the present invention.
- ⁇ 21 Block diagram showing the configuration of the vehicle control means of the fifth embodiment.
- FIG. 22 is a characteristic diagram in which the travel region is divided into four regions and the evaluation parameters are associated with the travel distance (travel process) in carrying out the fifth embodiment of the present invention.
- FIG. 24 is a correlation diagram showing the relationship between each evaluation parameter and the fuel consumption ratio ⁇ in an arbitrary driving method when the average driving method is 100%.
- FIG. 28 Correlation diagram for determining the fuel consumption rate in the target way of operation for any total vehicle mass.
- FIG. 29 is a control flowchart for explaining a fuel consumption evaluation method in the fifth embodiment.
- FIG. 30 A diagram showing a display screen during traveling according to the fifth and sixth embodiments.
- FIG. 31 is a diagram showing a real-time information display screen during traveling according to the fifth and sixth embodiments.
- FIG. 32 A diagram showing another display screen of real-time information related to traveling according to the fifth and sixth embodiments.
- FIG. 33 A view showing another display screen of real-time information relating to traveling according to the fifth and sixth embodiments.
- FIG. 34 is a diagram showing a display screen when the vehicle is stopped according to the fifth and sixth embodiments.
- FIG. 35 is a diagram showing another display screen when the vehicle is stopped according to the fifth and sixth embodiments.
- Fuel saving driving diagnosis report R output as a summary of fuel saving driving evaluation related to the fifth and sixth embodiments.
- FIG. 37 Comparison data between the target value of the accelerator opening for start acceleration and actual operation (driving operation) output as an evaluation of a single item related to the fifth and sixth embodiments.
- FIG. 38 is a block diagram showing the overall configuration of a sixth embodiment.
- Cargo vehicle (first and second embodiments)
- Z vehicle (third to sixth embodiments)
- Accelerator position measurement means Z Accelerator position sensor (first to sixth embodiments)
- Vehicle speed measurement means Z vehicle speed sensor (first to sixth embodiments)
- Fuel flow measurement means Z fuel flow meter (first to sixth embodiments)
- Vehicle-mounted storage means Z vehicle-mounted database (above, third to sixth embodiments)
- Input means Z keyboard (above, first and second embodiments)
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CN2005800270480A CN101002012B (zh) | 2004-08-18 | 2005-07-15 | 燃料消耗量评价系统 |
EP05766350A EP1780393B1 (en) | 2004-08-18 | 2005-07-15 | Fuel consumption evaluation system |
US11/659,809 US7454962B2 (en) | 2004-08-18 | 2005-07-15 | Fuel consumption evaluation system |
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JP2004238134A JP4353475B2 (ja) | 2004-08-18 | 2004-08-18 | 燃料消費量評価システム |
JP2004238139A JP4353476B2 (ja) | 2004-08-18 | 2004-08-18 | 燃料消費量評価システム |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
Publication number | Publication date |
---|---|
US20070256481A1 (en) | 2007-11-08 |
US7454962B2 (en) | 2008-11-25 |
EP1780393B1 (en) | 2011-11-16 |
EP1780393A4 (en) | 2010-11-03 |
EP1780393A1 (en) | 2007-05-02 |
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