JP2006076415A - Fuel saving operation evaluating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel saving operation evaluating system capable of enhancing the accuracy of the evaluation of fuel saving operation by making the real advice indication for an acceleration work (accelerating/decelerating operation) and the shifting operation and displaying a voice warning only when it is necessary. <P>SOLUTION: The fuel saving operation evaluating system has a controlling means (car-mounted control unit 7) to compute the amount of fuel consumption of a vehicle 1, its acceleration, deceleration, and running distance from the engine speed measured, the accelerator opening, vehicle speed, the rate of fuel consumption, and the engine load, and the controlling means 7 indicates an alarm about over-stamping of an accelerator (for example, "the accelerator over-stamped") and/or emits a voice warning including similar contents in case where the accelerator opening, engine load, and the acceleration are equal to or above the specified values, no judgement is passed about running up a hill, and where the display to promote a shift-up is non-indicative. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a system for evaluating a driving state of a vehicle when performing fuel-saving driving in a large difference in total vehicle mass between an empty vehicle and a loaded vehicle, for example, a truck or a bus. Acceleration / deceleration operation) and speed change operation.

  In order to recommend fuel-saving driving, for example, “Let's shift up” and / or voice prompts, for example, “Accelerator is too depressed” Alternatively, there is a technique for displaying real advice such as a voice warning.

  Here, in the above technique, there are cases where it is necessary to step on the accelerator or keep the engine speed high in various driving situations. Even in such a case, if a real advice display such as “Let's shift up” or “I stepped on the accelerator too much” is displayed, the driver feels bothersome, annoying, etc. It will be damaged.

  In addition to the above technique, a technique for promoting improvement of the driving technique of the driver and improving fuel efficiency by improving the driving operation has been disclosed (for example, see Patent Document 1).

However, even the technique (Patent Document 1) does not solve the above-described problems.
JP 2002-362185 A

  The present invention is proposed in view of the above-described problems of the prior art, and displays real advice display and voice warning regarding accelerator work (acceleration / deceleration operation) and shift operation only when necessary, and evaluates fuel-saving driving. The purpose is to provide a fuel-saving driving evaluation system that can improve the accuracy of the vehicle.

  The fuel-saving driving evaluation system of the present invention includes an engine speed measuring means (engine speed sensor 2) for measuring the engine speed of a vehicle (1), and an accelerator opening degree measuring means (accelerator opening sensor) for measuring an accelerator opening degree. 3), vehicle speed measuring means (vehicle speed sensor 4) for measuring the vehicle speed, fuel flow measuring means (fuel meter 5) for measuring the fuel flow rate, engine load measuring means (engine load sensor 6) for measuring the engine load, , A control means (vehicle-mounted control unit 7) for calculating the fuel consumption of the vehicle (1), the acceleration, deceleration and traveling distance of the vehicle (1) from the measured engine speed, accelerator opening, vehicle speed, fuel flow rate and engine load; The control means (7) has a table indicating that the accelerator opening degree, the engine load, and the acceleration are not less than a predetermined value and that it is not determined that the vehicle is climbing, and that the upshift is promoted. Configure to display a warning (eg, “You are stepping on the accelerator too much”) and / or issue a similar voice warning when (eg “Let ’s shift up”) is not displayed. (Claim 1).

  The fuel-saving driving evaluation system of the present invention includes an engine speed measuring means (engine speed sensor 2) for measuring the engine speed of the vehicle (1) and an accelerator opening measuring means (accelerator opening) for measuring the accelerator opening. Degree sensor 3), vehicle speed measuring means for measuring vehicle speed (vehicle speed sensor 4), fuel flow rate measuring means for measuring fuel flow rate (fuel meter 5), and engine load measuring means for measuring engine load (engine load sensor 6). ), And a control means (vehicle-mounted control unit 7) that calculates the fuel consumption of the vehicle (1), the acceleration, deceleration, and travel distance of the vehicle (1) from the measured engine speed, accelerator opening, vehicle speed, fuel flow rate and engine load. The control means (7) has an engine speed and an engine load that are equal to or greater than a predetermined value, and has not determined that the vehicle is going uphill. Is displayed (for example, “Accelerator has been stepped too much”), and if it is less than the gear position one level lower than the highest gear of the multi-speed transmission, a display for prompting upshifting (for example, , “Let ’s shift up”) and / or issue a similar voice warning, and then the engine speed is less than the predetermined value, the engine load is less than the predetermined value, or the climbing judgment is issued The display for prompting upshifting (“Let's shift up”) is hidden, and then the screen is returned to the normal screen (claim 2).

  Here, the control means (7) tentatively determines that the vehicle travels at a high speed when the travel distance is equal to or greater than the first predetermined distance and the vehicle speed is equal to or greater than the predetermined vehicle speed, and travels beyond the second predetermined distance in the provisional determination state. In such a case, it is preferable to be configured to make the main determination as high-speed traveling.

  The fuel-saving driving evaluation system of the present invention includes an engine speed measuring means (engine speed sensor 2) for measuring the engine speed of the vehicle (1) and an accelerator opening measuring means (accelerator opening) for measuring the accelerator opening. Degree sensor 3), vehicle speed measuring means for measuring vehicle speed (vehicle speed sensor 4), fuel flow rate measuring means for measuring fuel flow rate (fuel meter 5), and engine load measuring means for measuring engine load (engine load sensor 6). ), And a control means (vehicle-mounted control unit 7) that calculates the fuel consumption of the vehicle (1), the acceleration, deceleration, and travel distance of the vehicle (1) from the measured engine speed, accelerator opening, vehicle speed, fuel flow rate and engine load. The control means (7) travels coasting when the accelerator opening and the engine load are below predetermined values and the vehicle speed and deceleration are below predetermined values. Determine the coasting distance and then switch the deceleration judgment value to the low vehicle speed side when the coasting distance exceeds the predetermined value, the accelerator opening and engine load are below the predetermined value, and the vehicle speed and deceleration are above the predetermined value In the case of the case, it is determined that the vehicle is not coasting and a display prompting the user to use the coasting (for example, “Let's use coasting”) is displayed and / or a similar voice warning is issued, and then the accelerator opening If the vehicle speed is less than or equal to the specified value, or the vehicle speed is less than or equal to the specified value, and the deceleration is less than or equal to the set value (for example, 90%), the display prompts the user to use coasting ( “Sho” ”is not displayed and the screen returns to the normal screen (claim 3).

  Here, it is preferable that the deceleration determination value has two values for a low vehicle speed side and a higher vehicle speed side for stopping.

  Alternatively, the fuel-saving driving evaluation system of the present invention includes an engine speed measuring means (engine speed sensor 2) for measuring the engine speed of the vehicle (1) and an accelerator opening degree measuring means (accelerator opening) for measuring the accelerator opening degree. Degree sensor 3), vehicle speed measuring means for measuring vehicle speed (vehicle speed sensor 4), fuel flow rate measuring means for measuring fuel flow rate (fuel meter 5), and engine load measuring means for measuring engine load (engine load sensor 6). ), And a control means (vehicle-mounted control unit 7) that calculates the fuel consumption of the vehicle (1), the acceleration, deceleration, and travel distance of the vehicle (1) from the measured engine speed, accelerator opening, vehicle speed, fuel flow rate and engine load. ) And the control means (7) is the accelerator opening when the current vehicle speed is equal to or less than a predetermined value (for example, a value obtained by multiplying the vehicle speed when the accelerator is off) by a constant. If the engine load is less than the specified value, the vehicle speed and deceleration are greater than the specified value, and the indication that encourages the use of coasting (eg “Let's use coasting”) is not displayed, slow deceleration Display a prompt (for example, “Let's slow down slowly”) and / or issue a similar voice warning, and set the rate at which the accelerator opening is greater than or equal to a specified value, or the vehicle speed is less than or equal to a specified value, or the deceleration is a specified value When it is below (for example, 90%), the display prompting slow deceleration (“Let's slow down slowly”) is hidden and the screen returns to the normal screen (Claim 4). .

  In carrying out the present invention, the function of the control means (7) can be a combination of two or more of the functions.

  According to the fuel-saving driving evaluation system of the present invention having the above-described configuration and evaluation method, the engine speed measuring means (engine speed sensor 2) for measuring the engine speed of the vehicle (1) and the accelerator opening are measured. An accelerator opening measuring means (accelerator sensor 3), a vehicle speed measuring means (vehicle speed sensor 4) for measuring the vehicle speed, a fuel flow measuring means (fuel flow meter 5) for measuring the fuel flow, and an engine for measuring the engine load. Calculates the fuel consumption of the vehicle (1), acceleration, deceleration and travel distance of the vehicle (1) from the load measuring means (engine load sensor 6) and the measured engine speed, accelerator opening, vehicle speed, fuel flow rate and engine load. Control means (vehicle-mounted control unit 7), and the control means (7) determines that the vehicle is climbing when the accelerator opening, the engine load, and the acceleration are not less than predetermined values. If there is no indication that prompts you to shift up (for example, “Let's shift up”), a warning (eg, “I stepped on the accelerator too much”) will be displayed. Or, it is configured to issue a similar voice warning, so that real advice display and voice warning regarding accelerator work (acceleration / deceleration operation), for example, “I stepped on the accelerator too much” is displayed only when necessary, fuel saving The accuracy of driving evaluation can be increased.

  Further, the control means (7) has the above-described configuration, and the control means (7) is an indicator that warns that the accelerator pedal is excessively depressed because the engine speed and the engine load are not less than a predetermined value and is not determined as climbing. If you don't display the accelerator too much "), and if it is less than one gear position below the highest gear of the multi-speed transmission, a display prompting you to shift up (for example," Let's shift up ") Is displayed and / or a similar sound warning is issued, and then the engine speed is less than the predetermined value, or the engine load is less than the predetermined value, and the uphill determination is issued (“ It is configured to return to the normal screen after hiding "Let's shift up"), so real advice display and voice warnings regarding gear shifting operations, such as "Let's shift up" Only be displayed if needed such, it is possible to improve the accuracy of fuel-saving driving rating.

  Further, the control means (7) has the above-described configuration, and when the accelerator opening and the engine load are not more than predetermined values and the vehicle speed and the deceleration are not more than predetermined values, it is determined that the vehicle has coasted and the coasting distance is reached. After that, when the coasting distance becomes a predetermined value or more, the deceleration judgment value is switched to the low vehicle speed side, and when the accelerator opening and the engine load are less than the predetermined value and the vehicle speed and the deceleration are more than the predetermined value, It is determined that the vehicle is not coasting and a display prompting the user to use the coasting (for example, “Let's use coasting”) is displayed and / or a similar voice warning is issued. Or, if the vehicle speed is less than or equal to a predetermined value, or the deceleration is less than a preset value (eg 90%), a display prompting the use of coasting (for example, “Let ’s use coasting” ) Hide the normal screen Since it is configured to return, real advice display and audio warnings regarding accelerator work (acceleration / deceleration operation), gear shifting operation and brake operation, for example, “Let's make use of coasting” are displayed only when necessary. The accuracy of fuel efficiency driving evaluation can be improved.

  Further, the control means (7) has the above-described configuration, and the control means (7) is a case where the current vehicle speed is not more than a predetermined value (for example, a value obtained by multiplying the accelerator off vehicle speed by a constant), and the accelerator opening and the engine load are not more than the predetermined value. In the case where the vehicle speed and the deceleration are not less than the predetermined values and the display for promoting the use of coasting (for example, “Let's use coasting”) is not displayed, the display for prompting slow deceleration (for example, “slowly ”And / or issue a similar voice warning, the accelerator opening is greater than or equal to a predetermined value, or the vehicle speed is less than or equal to a predetermined value, or the deceleration is less than a set percentage (eg, 90%). If it is, the display that recommends slow deceleration (“Let's slow down slowly”) is hidden and the screen returns to the normal screen. Operation and brake operation Real advice display and audio warning concerning, for example, is displayed only when necessary to "Let's slowly deceleration", it is possible to enhance the accuracy of the fuel-saving driving evaluation.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  First, the first embodiment will be described with reference to FIGS. 1 and 2. The first embodiment of FIGS. 1 and 2 is an embodiment relating to a display that warns that the accelerator is excessively depressed.

In FIG. 1, the fuel-saving driving evaluation system according to the first embodiment transfers the data recorded by the equipment U1 on the vehicle 1 side, the equipment U2 on the management side, and the equipment U1 on the vehicle 1 side to the equipment U2 on the management side. The memory card 15 is a transfer means.
Here, the management side refers to, for example, a vehicle management department of a transportation company that owns the vehicle 1.

  The vehicle-side equipment U1 includes an engine speed measuring means (hereinafter referred to as an engine speed sensor) 2 for measuring the engine speed of a vehicle (lorry vehicle in the illustrated example) 1, an accelerator opening degree. An accelerator opening measuring means (hereinafter referred to as an accelerator opening sensor) 3, a vehicle speed measuring means (hereinafter referred to as a vehicle speed sensor) 4 for measuring the vehicle speed, and an on-vehicle vehicle described later. A timing unit (timer) (not shown) built in the control unit 7, a fuel flow rate measuring unit (hereinafter referred to as a fuel meter) 5 for measuring the fuel flow rate, and an engine load (for example, engine torque) are measured. Engine load measuring means (hereinafter referred to as engine load sensor) 6.

  Further, the equipment U1 on the vehicle side stores the measured engine speed, accelerator opening, vehicle speed, elapsed time, fuel flow rate, and engine load as vehicle signals, and from these vehicle signals, the fuel consumption, the vehicle Equipped with an in-vehicle control unit 7 that calculates acceleration, deceleration, and travel distance.

  On the other hand, the management-side equipment U2 receives the vehicle data from the memory card 15 and is measured from the measured engine speed, accelerator opening, vehicle speed, elapsed time, fuel flow, and engine load. The evaluation result is output by the control means (management side control unit; personal computer for fuel consumption data analysis) 20 for obtaining the acceleration and deceleration during operation of the vehicle 1 and evaluating the fuel consumption and the management side control unit 20. The printer 22 is an output unit that performs the above operation, and the keyboard 24 is an input unit that is attached to the management-side control unit 20.

  The management-side control unit 20 can also input information on fuel consumption calculated by the in-vehicle control unit 7 by the memory card 15 or a wireless transmission / reception means (not shown).

  The in-vehicle control unit 7 displays a warning that the accelerator is excessively depressed when the accelerator opening degree, the engine load, and the acceleration are not less than the predetermined values, the vehicle is not determined to be climbing, and the display for prompting the upshift is not displayed. It is configured to display and / or issue an audio alert.

  Here, the in-vehicle control unit 7 makes a provisional determination that the vehicle is traveling at a high speed when the traveling distance is equal to or greater than the first predetermined distance and the vehicle speed is equal to or greater than the first predetermined vehicle speed. It is preferable that the main determination is made as high-speed traveling when traveling over a distance.

  Next, referring to the flowchart of FIG. 2 and the configuration of FIG. 1, the control (evaluation) method of the first embodiment, that is, an accelerator warning display regarding the accelerator work (for example, “Accelerator is excessively depressed” )) And / or a sound alarm, a control method for determining that “the accelerator is stepped on too much” will be described below.

  First, in step S1, the in-vehicle control unit 7 determines the operation data (engine speed by the engine rotation sensor 2, accelerator opening by the accelerator opening sensor 3, vehicle speed by the vehicle speed sensor 4, fuel flow by the fuel meter 5, engine load sensor. Engine load).

  In the next step S2, time is started by a timer (not shown), and in the next step S3, the vehicle-mounted control unit 7 determines that the accelerator opening, the engine load, and the acceleration are equal to or higher than predetermined values and is “uphill”. It is determined whether or not “Let's shift up” is hidden.

  If the accelerator opening, the engine load, and the acceleration are not less than the predetermined values, and it is not judged as “uphill” and “shift up” is not displayed (YES in step S3), the process proceeds to the next step S4. move on.

  On the other hand, when the accelerator opening, engine load, and acceleration are not less than the predetermined values, “not uphill” is determined, “shift up” is not displayed, and any one of the items is not established (NO in step S3) Returns to step S1 and repeats step S1 and subsequent steps.

  In step S4, the vehicle-mounted control unit 7 displays “Accelerator is depressed too much” and / or issues a voice warning “Accelerator is depressed too much” and proceeds to the next Step S5.

  In step S5, whether the accelerator opening is less than the determination value of “too much accelerator is depressed”, whether the acceleration is less than a predetermined value, or “climbing up” determination is issued, and whether one of the terms is established. Judging.

  If the accelerator opening is less than the “accelerator stepping too much” determination value, the acceleration is less than a predetermined value, or “climbing up” determination is made (YES in step S5), The process proceeds to the next step S6. On the other hand, if the accelerator opening is less than the judgment value of “I stepped on the accelerator too much”, the acceleration is less than the predetermined value, or the judgment of “uphill” is not established ( In step S5 NO), the process returns to step S1 and repeats step S1 and subsequent steps.

  In step S6, the condition for returning to the normal screen is established, the process returns to step S1, and steps S1 and after are repeated again.

  According to the first embodiment of the configuration and the evaluation method described above, the vehicle-mounted control unit 7 has an accelerator opening degree, an engine load, and an acceleration that are equal to or higher than predetermined values, is not determined to be climbing, and a display that prompts a shift up is displayed. When it is not displayed, it is configured to display a warning (eg, “Too stepping on the accelerator”) and / or issue a similar voice warning when the accelerator is not displayed. ) Real advice display and voice warning, for example, “excessive accelerator pedal” is displayed only when necessary, and the accuracy of fuel-saving driving evaluation can be improved.

Next, a second embodiment will be described with reference to FIGS.
The second embodiment of FIGS. 1 and 3 is an embodiment relating to a display that prompts the driver to shift up when fuel-saving driving is not being performed.

  In the second embodiment, the vehicle-mounted control unit 7 displays a warning (for example, “accelerator is not used” because the engine speed and the engine load are not less than a predetermined value and it is not determined that the vehicle is climbing up. If you do not display too much "), and if it is less than the gear position one level below the highest gear of the multi-speed transmission, a display prompting you to shift up (for example," Let's shift up ") Display and / or issue a similar voice warning, and then display a prompt to shift up (“shift up” when the engine speed is less than a predetermined value, the engine load is less than a predetermined value, or an uphill judgment is issued. It is configured to return to the normal screen after hiding ")".

  Next, referring to the flowchart of FIG. 3 and the configuration of FIG. 1, in the case of determining “shift up time” in order to display a display for prompting a shift up (“Let's shift up”) regarding the shift operation. The control method will be described below.

  First, in step S11, the in-vehicle control unit 7 determines operation data (engine speed by the engine rotation sensor 2, accelerator opening by the accelerator opening sensor 3, vehicle speed by the vehicle speed sensor 4, fuel flow by the fuel meter 5, engine load sensor. Engine load).

  In the next step S12, the time elapses with a timer (not shown), and the process proceeds to step S13.

  In step S13, the in-vehicle control unit 7 has determined that the engine speed and the engine load are equal to or greater than the predetermined values, has not been determined as “uphill”, the display of “too much stepping on the accelerator” is not displayed, and N steps It is determined whether the transmission is equal to or less than N-1 shift position.

  The in-vehicle control unit 7 has an engine speed and an engine load that are equal to or higher than the predetermined values, does not determine “uphill” and does not depress the accelerator too much, and does not display N−1 in the N-stage transmission. If it is equal to or less than the shift position (YES in step S13), the process proceeds to the next step S14.

  On the other hand, either the engine speed and the engine load are equal to or higher than the predetermined value, “climbing up”, “depressing the accelerator too much” is not displayed, and the N-stage transmission is below the N−1 shift position. If even one item does not satisfy the condition (NO in step S13), the process returns to step S11, and step S11 and subsequent steps are repeated again.

  In step S14, the in-vehicle control unit 7 displays “Let's shift up” and / or issues a “Let's shift up” audio warning, and proceeds to step S15.

  In step S15, it is determined whether any one of whether the engine speed is less than a predetermined value, the engine load is less than a predetermined value, or an “uphill” determination is made is satisfied.

  If either one of the engine speed is less than the predetermined value, the engine load is less than the predetermined value, or the “uphill” determination is made (YES in step S15), the next step S16 is performed. On the other hand, if the engine speed is less than the predetermined value, the engine load is less than the predetermined value, or whether the “uphill” determination has been made (NO in step S15), the process returns to step S11. Step S11 and subsequent steps are repeated again.

  In step S16, the condition for returning to the normal screen is established, the process returns to step S11, and step S1 and subsequent steps are repeated again.

  According to the second embodiment of the configuration and the evaluation method described above, the vehicle-mounted control unit 7 warns that the accelerator pedal is excessively depressed because the engine speed and the engine load are not less than the predetermined values and is not determined to be climbing. If the display to be displayed (for example, “Accelerator is depressed too much”) is not displayed and the shift position is one lower than the highest speed of the multi-speed transmission, a display for prompting upshifting (for example, “shift” Display ”and / or issue an audio alert, and then prompt a shift up if the engine speed is less than a predetermined value or the engine load is less than a predetermined value and an uphill judgment is issued. Since it is configured to return to the normal screen after the display (for example, “Let's shift up”) is hidden, the real advice display regarding the shift operation and the voice warning, “ Only to appear in the case Futoappu necessary to the Let's ", it is possible to enhance the accuracy of the fuel-saving driving evaluation.

  Next, a third embodiment will be described with reference to FIGS. 1 and 4. The third embodiment shown in FIGS. 1 and 4 is an embodiment related to a display for prompting the utilization of coasting for fuel-saving driving.

  In the third embodiment, the vehicle-mounted control unit 7 determines that the vehicle is coasting when the accelerator opening and the engine load are equal to or less than a predetermined value and the vehicle speed and deceleration are equal to or less than the predetermined value, and calculates the coasting distance. After that, when the coasting distance exceeds the predetermined value, the deceleration judgment value is switched to the low vehicle speed side.If the accelerator opening and the engine load are below the predetermined value and the vehicle speed and deceleration are above the predetermined value, the vehicle is coasting. It is determined that there is no display, and a display prompting the use of coasting (for example, “Let's use coasting”) is displayed and / or a similar voice warning is issued, and then the accelerator opening is equal to or greater than a predetermined value, or the vehicle speed is a predetermined value. If the deceleration is below the set value (for example, 90%) below, the display prompting the use of coasting (“Let ’s use coasting”) is hidden. Return to normal screen It is configured.

  Here, it is preferable to provide two values for the deceleration determination value: a low vehicle speed side toward the stop and a higher vehicle speed side than that.

  Next, referring to the flowchart of FIG. 4 and the configuration of FIG. 1, for example, “Let's make use of coasting” and / or issue a sound alarm regarding accelerator work (acceleration / deceleration operation) and speed change operation. Next, a control method in the case where it is determined that “timing to utilize coasting” will be described below.

  First, in step S21, the in-vehicle control unit 7 determines the operation data (the engine speed by the engine rotation sensor 2, the accelerator opening by the accelerator opening sensor 3, the vehicle speed by the vehicle speed sensor 4, the fuel flow by the fuel meter 5, the engine load sensor. Engine load).

  In the next step S22, the lapse of time is started by a timer (not shown), and the process proceeds to the next step S23.

  In step S23, the vehicle-mounted control unit 7 determines whether or not the accelerator opening and the engine load are not more than predetermined values, the vehicle speed and the deceleration are not less than predetermined values, and coasting traveling is not utilized.

  If the accelerator opening and the engine load are not more than the predetermined values, the vehicle speed and deceleration are not less than the predetermined values, and the coasting is not utilized (YES in step S23), the process proceeds to step S24, while the condition of S24 is If not satisfied (NO in step S23), the process proceeds to step S27.

  In step S24, the vehicle-mounted control unit 7 displays “Let's use coasting” and / or issues a voice warning “Let's use coasting”, and then proceeds to the next step S25.

  In step S25, the in-vehicle control unit 7 determines whether the accelerator opening is equal to or greater than a predetermined value, whether the vehicle speed is equal to or less than a predetermined value, or whether the deceleration is equal to or less than a predetermined ratio (for example, 90%). It is determined whether or not is established.

  The vehicle-mounted control unit 7 has any one of the following: whether the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is equal to or less than a predetermined ratio (for example, 90%). If yes (YES in step S25), the process proceeds to step S26. On the other hand, the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is equal to or less than a set ratio (for example, 90%) of the predetermined value. If all of the above are not established (NO in step S25), the process returns to step S21, and step S21 and subsequent steps are repeated again.

  In step S26, the vehicle-mounted control unit 7 returns to the normal screen, returns to step S21, and repeats step S21 and subsequent steps again.

  In step S27, the vehicle-mounted control unit 7 determines whether or not the vehicle has coasted for a predetermined distance or more. If the vehicle has been coasted for a predetermined distance or more (YES in step S27), the deceleration determination value is set on the low vehicle speed side in step S28. After switching to step S21, the process returns to step S21, and step S21 and subsequent steps are repeated again.

  On the other hand, if it is not coasting more than a predetermined distance (NO of step S27), it will return to step S21 as it is and will repeat step S21 and subsequent steps again.

  According to the third embodiment of the configuration and the evaluation method described above, the vehicle-mounted control unit 7 is used when the accelerator opening and the engine load are equal to or greater than a predetermined value, the vehicle speed is equal to or greater than a predetermined value, and the deceleration is equal to or less than a predetermined value. Determines that the vehicle is coasting and calculates the coasting distance. When the coasting distance exceeds a predetermined value, the deceleration determination value is switched to the constant vehicle speed side, the accelerator opening and the engine load are below the predetermined value, and the vehicle speed is predetermined. If the value is equal to or greater than the value and the deceleration is equal to or greater than the predetermined value, it is determined that the vehicle is not coasting and a display prompting the user to utilize coasting (for example, “Let's use coasting”) is displayed and / or the like. If the accelerator opening is greater than or equal to the predetermined value, or the vehicle speed is less than or equal to the predetermined value and the deceleration is less than or equal to the preset percentage, Let's use driving. '' Is displayed and the screen returns to the normal screen. Real advice display and voice warnings regarding accelerator work (acceleration / deceleration operation), gear shifting operation and brake operation, for example, “Let ’s use coasting” It can be displayed only when necessary, and the accuracy of fuel-saving driving evaluation can be improved.

Next, a fourth embodiment will be described with reference to FIGS. 1 and 5.
The fourth embodiment of FIGS. 1 and 5 is an embodiment relating to a display that promotes slow deceleration.

  In the fourth embodiment, the vehicle-mounted control unit 7 is configured such that when the current vehicle speed is equal to or less than a predetermined value (for example, a value obtained by multiplying the vehicle speed with the accelerator off) by a constant, the accelerator opening and the engine load are equal to or less than the predetermined value, If the deceleration is greater than or equal to the specified value and the display that encourages the use of coasting (for example, “Let's use coasting”) is not displayed, the display prompts for slow deceleration (for example, “Slow down slowly” )) And / or a similar voice warning is issued, after which the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is equal to or less than a predetermined ratio (for example, 90%). If so, the display that recommends slow deceleration (“Let's slow down slowly”) is hidden and the screen returns to the normal screen.

  Next, with reference to the flowchart of FIG. 5 and the configuration of FIG. 1, regarding accelerator work (acceleration / deceleration operation) and shift operation, for example, “slow down slowly” is displayed and / or a similar sound alarm is issued. Therefore, a control method in the case where it is determined that “timing to slowly decelerate” will be described below.

  First, in step S31, the in-vehicle control unit 7 determines the operation data (engine speed by the engine rotation sensor 2, accelerator opening by the accelerator opening sensor 3, vehicle speed by the vehicle speed sensor 4, fuel flow by the fuel meter 5, engine load sensor. Engine load).

  In the next step S32, the elapse of time is started by a timer (not shown), and the process proceeds to the next step S33.

  In step S33, the in-vehicle control unit 7 determines whether or not the vehicle speed is equal to or lower than a predetermined value (for example, a value obtained by multiplying the vehicle speed with the accelerator off) by a constant (YES in step S33). If it progresses to S34 and exceeds a predetermined value (NO of step S33), it will return to step S31 as it is and will repeat step 31 and subsequent steps again.

  In step S34, the vehicle-mounted control unit 7 determines whether or not the accelerator opening, the engine load are equal to or less than predetermined values, the vehicle speed and deceleration are equal to or greater than predetermined values, and “Let's use coasting” is not displayed. to decide.

  If the accelerator opening and the engine load are not more than the predetermined values, the vehicle speed and deceleration are not less than the predetermined values, and “Let's make use of coasting” is not displayed (YES in step S34), the process proceeds to step S35. On the other hand, when the condition of S34 is not satisfied (NO in step S34), the process returns to step S31 as it is, and step 31 and subsequent steps are repeated.

  In the next step S35, the in-vehicle control unit 7 displays “Let it slowly decelerate” and gives an audio warning of the same content, and proceeds to step S36.

  In step S36, the in-vehicle control unit 7 determines whether the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is equal to or less than a predetermined ratio (for example, 90%). It is determined whether or not is established.

  If any one of the following conditions is satisfied: the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is equal to or less than a predetermined value setting ratio (for example, 90%). YES), the process proceeds to step S37, and on the other hand, all of whether the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is equal to or less than a predetermined ratio (for example, 90%) is not established. In the case of (NO in step S36), the process returns to step S31, and step S31 and subsequent steps are repeated again.

  In step S37, the in-vehicle control unit 7 establishes the return condition to the normal screen, returns to step S31, and repeats step S31 and subsequent steps again.

  According to the fourth embodiment of the configuration and the evaluation method described above, the in-vehicle control unit 7 is configured such that when the current vehicle speed is equal to or smaller than a predetermined value, the accelerator opening and the engine load are equal to or smaller than the predetermined value, and the vehicle speed and deceleration are equal to the predetermined value. In the above case, when the display for promoting the use of coasting (for example, “Let's use coasting”) is not displayed, the display for prompting slow deceleration (for example, “slow down slowly”) is displayed. / Or If a voice warning is issued and the accelerator opening is greater than or equal to a predetermined value, the vehicle speed is less than a predetermined value, or the deceleration is less than a set percentage of the predetermined value, a display prompting slow deceleration ("slow deceleration ”Let's hide”) and return to the normal screen. Real advice display and voice warning regarding accelerator work (acceleration / deceleration operation) and shift operation, such as “slow Is displayed only when necessary Let's slowed down, "it said, it is possible to enhance the accuracy of the fuel-saving driving evaluation.

Next, with reference to FIG. 6, the modification of 1st Embodiment-4th Embodiment is demonstrated.
The configuration of the first embodiment to the fourth embodiment of FIG. 1 includes an engine rotation sensor 2, an accelerator opening sensor 3, a vehicle speed sensor 4, a fuel flow meter 5, and an engine load sensor 6 that are detection means for each parameter. It is an embodiment connected to the in-vehicle control unit 7 by a dedicated circuit.

On the other hand, in the configuration of the first embodiment to the fourth embodiment in FIG. 6, the accelerator signal, fuel flow signal, vehicle speed signal, engine speed signal, and engine load signal are transmitted in advance in the in-vehicle communication network “in-vehicle LAN”. Are collected as digital signals in the LAN repeater 8 and stored in the vehicle-mounted control unit 7 through the communication cable W.
Except for these configurations, the configuration is substantially the same as the configuration of the first embodiment to the fourth embodiment of FIG. 1, and thus performs the same function as the function of the first embodiment to the fourth embodiment. The operation and effect are the same as those in the first to fourth embodiments, and the subsequent description is omitted.

  It should be noted that the illustrated embodiment is merely an example, and does not limit the technical scope of the present invention.

The block diagram which shows the structure of the fuel-saving driving | operation evaluation system which concerns on 1st Embodiment-4th Embodiment of this invention. The flowchart which showed the control method in the case of determination of "overdepressing an accelerator" in 1st Embodiment. The flowchart which showed the control method regarding the display which accelerates | stimulates the upshift in 2nd Embodiment. The flowchart which showed the control method regarding the display which accelerates | stimulates the utilization of coasting in 3rd Embodiment. The flowchart which showed the control method regarding the display which accelerates | stimulates the slow deceleration in 4th Embodiment. The block diagram which shows the structure of the modification of 1st-4th embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... Engine speed measuring means / Engine speed sensor 3 ... Accelerator opening degree measuring means / Accelerator opening degree sensor 4 ... Vehicle speed measuring means / Vehicle speed sensor 5 ... Fuel flow rate measuring means / Fuel meter 6 ... Engine load measuring means / Engine load sensor 7 ... In-vehicle control unit 8 ... LAN repeater 15 ... Memory card 20 ... Management side control unit 22 ... Printer 24. ..Input means / keyboard U1 ... equipment on vehicle side U2 ... equipment on management side

Claims (4)

  Engine speed measuring means for measuring the engine speed of the vehicle, accelerator opening measuring means for measuring the accelerator opening, vehicle speed measuring means for measuring the vehicle speed, fuel flow measuring means for measuring the fuel flow, and engine load Engine load measuring means for measuring vehicle engine speed, accelerator opening, vehicle speed, fuel flow rate and control means for calculating vehicle fuel consumption, vehicle acceleration, deceleration, and travel distance from the engine load. The control means has an accelerator opening, engine load, acceleration that is not less than a predetermined value, has not been determined to be climbing, and a display that warns that the accelerator has been stepped over when the display that prompts for upshifting is not displayed. A fuel-saving driving evaluation system for a vehicle, which is configured to display and / or issue a similar voice warning.   Engine speed measuring means for measuring the engine speed of the vehicle, accelerator opening measuring means for measuring the accelerator opening, vehicle speed measuring means for measuring the vehicle speed, fuel flow measuring means for measuring the fuel flow, and engine load Engine load measuring means for measuring vehicle engine speed, accelerator opening, vehicle speed, fuel flow rate and control means for calculating vehicle fuel consumption, vehicle acceleration, deceleration, and travel distance from the engine load. The control means has a case where the engine speed and the engine load are equal to or higher than the predetermined value, it is not determined that the vehicle is climbing up, a display warning of excessive depression of the accelerator pedal is not displayed, and the multi-stage transmission is If the speed is lower than the maximum gear, the display prompts the user to shift up and / or issues a similar sound warning, and then the engine speed is less than the predetermined value, or When the vehicle load is less than the predetermined value or when the climbing judgment is issued, the fuel-saving driving of the vehicle is characterized in that the display for prompting upshifting is hidden and then the normal screen is restored. Evaluation system.   Engine speed measuring means for measuring the engine speed of the vehicle, accelerator opening measuring means for measuring the accelerator opening, vehicle speed measuring means for measuring the vehicle speed, fuel flow measuring means for measuring the fuel flow, and engine load Engine load measuring means for measuring vehicle engine speed, accelerator opening, vehicle speed, fuel flow rate and control means for calculating vehicle fuel consumption, vehicle acceleration, deceleration, and travel distance from the engine load. The control means determines that the vehicle has coasted when the accelerator opening and the engine load are not more than predetermined values and the vehicle speed and deceleration are not more than predetermined values, calculates the coasting distance, and then the coasting distance is predetermined. If the value exceeds this value, the deceleration judgment value is switched to the low vehicle speed side.If the accelerator opening and engine load are below the specified values and the vehicle speed and deceleration are above the specified values, coasting It is determined that there is no such thing and a display prompting the use of coasting is displayed and / or a similar voice warning is issued, and then the accelerator opening is set to a predetermined value or more, or the vehicle speed is set to a predetermined value and the deceleration is set to a predetermined value. A vehicle fuel-saving driving evaluation system configured to hide a display for prompting the use of coasting when the ratio is equal to or less than that and return to a normal screen.   Engine speed measuring means for measuring the engine speed of the vehicle, accelerator opening measuring means for measuring the accelerator opening, vehicle speed measuring means for measuring the vehicle speed, fuel flow measuring means for measuring the fuel flow, and engine load Engine load measuring means for measuring vehicle engine speed, accelerator opening, vehicle speed, fuel flow rate and control means for calculating vehicle fuel consumption, vehicle acceleration, deceleration, and travel distance from the engine load. The control means does not display a display when the current vehicle speed is below a predetermined value, the accelerator opening and the engine load are below a predetermined value, the vehicle speed and deceleration are above a predetermined value, and prompting the use of coasting traveling In such a case, a display prompting slow deceleration is displayed and / or a similar sound warning is issued, and the accelerator opening is equal to or greater than a predetermined value, the vehicle speed is equal to or less than a predetermined value, or the deceleration is a predetermined ratio. If it has been down, hide the display prompting the slow deceleration, fuel-saving driving evaluation system of a vehicle, characterized in that it is constructed as return to the normal screen.

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