JP2014051889A - Fuel consumption calculating method, fuel consumption comparing method, and tire selection method - Google Patents

Fuel consumption calculating method, fuel consumption comparing method, and tire selection method Download PDF

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JP2014051889A
JP2014051889A JP2012195030A JP2012195030A JP2014051889A JP 2014051889 A JP2014051889 A JP 2014051889A JP 2012195030 A JP2012195030 A JP 2012195030A JP 2012195030 A JP2012195030 A JP 2012195030A JP 2014051889 A JP2014051889 A JP 2014051889A
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fuel consumption
vehicle
tire
characteristic value
running
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JP6055633B2 (en
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Kenjiro Yanai
健二郎 矢内
Takashi Tomomoto
貴士 友本
Masaru Aono
優 青野
Shunsuke Gokyu
俊介 後久
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Bridgestone Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a fuel consumption calculating method eliminating influence of a vehicle running condition, a fuel consumption comparing method for comparing fuel consumptions based on different types of tires in which an influence under the running condition, and a tire selection method for selecting tire in which the fuel consumption is reduced.SOLUTION: The present invention relates to a fuel consumption calculating method for calculating a fuel consumption of a vehicle on the basis of its actual travel, vehicle travel condition measuring means comprises the steps of: vehicle travel condition measuring in elapsing a fuel consumption and at least one characteristic value indicating vehicle travel conditions including at least travel distance in regard to a vehicle practically running; running condition comparing means compares a characteristic value measured by the vehicle running condition measuring step with a prescribed vehicle running condition to extract a time zone in which the vehicle runs where the characteristic value coincides with the running condition, and the fuel consumption means includes: calculating fuel consumption to calculate the fuel consumption of the vehicle on the basis of the fuel consumption only in the time zone extracted at the running distance comparing step and the running distance.

Description

この発明は、実走行に基づく車両の燃費を算出する燃費算出方法、装着するタイヤの相異に基づく車両の燃費を比較する燃費比較方法及びタイヤ選定方法に関するものである。   The present invention relates to a fuel consumption calculation method for calculating the fuel consumption of a vehicle based on actual driving, a fuel consumption comparison method for comparing the fuel consumption of a vehicle based on a difference in tires to be mounted, and a tire selection method.

コストや環境負荷の軽減等の観点から、低燃費のタイヤに対する要求が大きくなっている。ところで、燃費は一般に、車両の走行距離と燃料使用量から算出される。例えば特許文献１では、燃料代、燃料の単価、走行距離により、所定期間毎に燃費を算出している。   From the viewpoint of reducing cost and environmental load, there is an increasing demand for low fuel consumption tires. By the way, the fuel efficiency is generally calculated from the travel distance of the vehicle and the amount of fuel used. For example, in Patent Document 1, the fuel consumption is calculated for each predetermined period based on the fuel cost, the unit price of fuel, and the travel distance.

特開２０１０−２６７１８４号公報JP 2010-267184 A

ここで、燃費は、車両の速度、エンジン回転数、アイドリング比率、車両の急加速／急減速等の車両走行状態によって変動する。従って、例えば、異なる車両に同じ種類のタイヤを装着した場合、または装着するタイヤの種類を別の種類に変えて車両を実走行させた場合に、車両またはタイヤそのものに起因する燃費の変動を適切に把握することが困難であった。   Here, the fuel consumption varies depending on the vehicle running state such as the vehicle speed, engine speed, idling ratio, sudden acceleration / deceleration of the vehicle, and the like. Therefore, for example, when the same type of tire is mounted on different vehicles, or when the vehicle is actually run with a different type of tire to be mounted, the fuel consumption fluctuation caused by the vehicle or the tire itself is appropriately It was difficult to grasp.

この発明は、このような問題点を解決することを課題とするものであり、車両走行状態の影響を排除した燃費を算出することができる燃費算出方法、装着するタイヤの種類の相異に基づく車両の燃費を一定の車両走行状態の影響が排除された状態で比較することができる燃費比較方法、及び燃料費を有効に削減することができるタイヤを選定することができるタイヤ選定方法を提供することを目的とするものである。   An object of the present invention is to solve such a problem, and is based on a difference in the type of tire to be mounted, a fuel consumption calculation method capable of calculating a fuel consumption that eliminates the influence of a vehicle running state, and the like. Provided are a fuel consumption comparison method capable of comparing the fuel consumption of vehicles in a state in which the influence of a certain vehicle running state is eliminated, and a tire selection method capable of selecting a tire capable of effectively reducing fuel costs. It is for the purpose.

この発明の燃費算出方法は、実走行に基づく車両の燃費を算出する燃費算出方法であって、車両走行状態計測手段が、実走行する車両について、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す少なくとも１つの特性値とを、経時的に計測する車両走行状態計測ステップと、走行条件比較手段が、該車両走行状態計測ステップで計測された特性値と、予め定められた車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する走行条件比較ステップと、燃費算出手段が、該走行条件比較ステップで抽出された時間帯のみの該燃料消費量と該走行距離とに基づいて、該車両の燃費を算出する燃費算出ステップと、から構成されることを特徴とする。この燃費算出方法によれば、一定の車両走行状態の影響を排除した、実走行に基づく車両の燃費を算出することができる。
この明細書及び特許請求の範囲でいう「車両走行状態を示す特性値」とは、車両の速度・走行距離・位置、エンジン回転数、アイドリング時間、急加速／急減速状況、タイヤの内圧・温度等の特性値をいう。また、「経時的に計測する」とは、必ずしも過去から現在に至るすべての時間帯について計測すること（連続的な計測）を指すものではなく、例えば、過去から現在に至る間の少なくとも複数時点において計測すればよく、少なくとも一瞬だけ計測するものではないことを意味する。ここで、「燃料消費量」とは、消費した燃料の容積（リットル）で計測することができ、また消費した燃料の重量（ｋｇ）や、費やした燃料費（円）で表すこともできる。そして、「特性値が走行条件に合致する」とは、前記車両走行状態を示す特性値の少なくとも１つが所定の範囲内であることをいい、例えば、車両の走行速度が一定範囲内であることをいう。
ここで、この燃費算出方法では、前記特性値が、エンジン回転数と、車両の速度とを含み、前記車両の走行条件は、該エンジン回転数及び該車両の速度が所定の範囲内であるときとすることが好ましい。この場合には、燃費が大きく変動する場合を排除して燃費を算出することで、より適切に、実走行に基づく車両の燃費を算出することができる。 The fuel consumption calculation method according to the present invention is a fuel consumption calculation method for calculating the fuel consumption of a vehicle based on actual travel, wherein the vehicle travel state measurement means includes a vehicle travel that includes fuel consumption and at least a travel distance for the actual travel vehicle A vehicle running state measuring step for measuring at least one characteristic value indicating a state over time; a characteristic value measured by the running condition comparing means in the vehicle running state measuring step; and a predetermined vehicle running Comparing the conditions and extracting the time zone in which the characteristic value matches the driving condition and extracting the time zone in which the vehicle has traveled; and the time zone in which the fuel consumption calculating means is extracted in the driving condition comparing step A fuel consumption calculating step of calculating the fuel consumption of the vehicle based on the fuel consumption amount and the travel distance only. According to this fuel consumption calculation method, it is possible to calculate the fuel consumption of a vehicle based on actual traveling without the influence of a certain vehicle traveling state.
The “characteristic value indicating the vehicle running state” as used in this specification and claims refers to the vehicle speed / travel distance / position, engine speed, idling time, sudden acceleration / deceleration situation, tire internal pressure / temperature. It means the characteristic value. “Measuring over time” does not necessarily mean that all time zones from the past to the present are measured (continuous measurement). For example, at least a plurality of points in time from the past to the present This means that it is sufficient not to measure at least for a moment. Here, the “fuel consumption” can be measured by the volume (liter) of the consumed fuel, and can also be expressed by the weight (kg) of the consumed fuel or the spent fuel cost (yen). “The characteristic value matches the driving condition” means that at least one of the characteristic values indicating the vehicle driving state is within a predetermined range. For example, the driving speed of the vehicle is within a certain range. Say.
Here, in this fuel consumption calculation method, the characteristic value includes an engine speed and a vehicle speed, and the running condition of the vehicle is when the engine speed and the vehicle speed are within a predetermined range. It is preferable that In this case, the fuel consumption of the vehicle based on actual travel can be calculated more appropriately by calculating the fuel consumption while excluding the case where the fuel consumption varies greatly.

また、この発明の燃費比較方法は、装着するタイヤの相異に基づく車両の燃費を比較する燃費比較方法であって、車両走行状態計測手段が、装着したタイヤの種類が互いに異なる２台以上の実走行する車両について、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す少なくとも１つの特性値とを、経時的に計測する車両走行状態計測ステップと、走行条件比較手段が、該車両のそれぞれについて、該車両走行状態計測ステップで計測された特性値と、予め定められた車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する走行条件比較ステップと、燃費算出手段が、該車両のそれぞれについて、該走行条件比較ステップで抽出された時間帯のみの該燃料消費量と該走行距離とに基づいて、各種類のタイヤを装着した車両の燃費を算出する燃費算出ステップと、該燃費算出手段が、該燃費算出ステップで算出された前記各種類のタイヤを装着した車両の燃費の差を算出する燃費比較ステップと、から構成されることを特徴とする。この燃費比較方法によれば、装着するタイヤの相異に基づく車両の燃費（すなわち装着するタイヤの種類を変えた場合の車両の燃費）を、一定の車両走行状態の影響が排除された状態で比較することができる。
なお、「装着しているタイヤの種類が互いに異なる２台以上の車両に対して、燃料消費量と、特性値とを計測する」とは基本的に、１台目の車両は全ての車輪にある種類のタイヤを装着し、２台目以降の車両は各車両の全ての車輪にそれぞれ別の種類のタイヤを装着することをいうものとするが、車両同士で一部の車輪のみで装着されたタイヤの種類が異なる場合も含むものとする。また、車両にある種類のタイヤを装着して燃料消費量と特性値とを計測した後、該車両のタイヤを別の種類のタイヤに付け替えて燃料消費量と特性値とを計測することも含むものとする。 The fuel efficiency comparison method of the present invention is a fuel efficiency comparison method for comparing the fuel efficiency of vehicles based on the difference in the tires to be mounted, wherein the vehicle running state measuring means has two or more types of tires that are different from each other. A vehicle running state measuring step for measuring fuel consumption and at least one characteristic value indicating a vehicle running state including at least a running distance with respect to an actual running vehicle, and a running condition comparison means include: For each, the characteristic value measured in the vehicle traveling state measurement step is compared with a predetermined traveling condition of the vehicle, and a time zone during which the vehicle has traveled, where the characteristic value matches the traveling condition. The driving condition comparison step to be extracted and the fuel consumption calculation means for each of the vehicles based on the fuel consumption amount and the driving distance only in the time zone extracted in the driving condition comparison step. The fuel consumption calculation step for calculating the fuel consumption of the vehicle equipped with each type of tire, and the fuel consumption calculation means calculate the difference in the fuel consumption of the vehicle equipped with each type of tire calculated in the fuel consumption calculation step. And a fuel consumption comparison step. According to this fuel efficiency comparison method, the fuel efficiency of a vehicle based on the difference in the tires to be mounted (that is, the fuel efficiency of the vehicle when the type of tire to be mounted is changed) in a state where the influence of a certain vehicle running state is excluded. Can be compared.
Note that “measuring fuel consumption and characteristic values for two or more vehicles with different types of tires installed” basically means that the first vehicle is attached to all wheels. A certain type of tire is installed, and the second and subsequent vehicles shall be fitted with different types of tires on all wheels of each vehicle. This includes cases where different tire types are used. It also includes measuring the fuel consumption and characteristic value after attaching a certain type of tire to the vehicle and then replacing the vehicle tire with another type of tire. Shall be.

そして、この発明の他の燃費比較方法は、装着するタイヤの種類の相異に基づく車両の燃費を比較する燃費比較方法であって、車両走行状態計測手段が、実走行する車両について、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す少なくとも１つの特性値とを、経時的に計測する車両走行状態計測ステップと、走行条件比較手段が、該車両走行状態計測ステップで計測された特性値と、予め定められた車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する走行条件比較ステップと、燃費算出手段が、該走行条件比較ステップで抽出された時間帯のみの該燃料消費量と該走行距離とに基づいて、該車両の燃費を算出する燃費算出ステップと、該燃費算出手段が、予め定められたタイヤの燃費情報に基づいて、該燃費算出ステップで算出された前記車両の燃費に対応する、該車両が装着したタイヤとは異なる種類のタイヤを装着した車両の燃費を推定する燃費推定ステップと、該燃費算出ステップで算出された車両の燃費と、該燃費推定ステップで推定された、該車両が装着したタイヤとは異なる種類のタイヤを装着した車両の燃費との差を算出する燃費比較ステップと、から構成されることを特徴とする。この燃費比較方法によれば、比較対象のタイヤを、必ずしも実際に装着して走行することなく、様々な種類のタイヤを装着した車両の燃費を簡便に比較することができる。
なお、ここでいう「燃費情報」とは、ある種類のタイヤを装着した車両の燃費から、別の種類のタイヤを装着した車両の燃費を推定するために必要な情報をいい、例えばそれぞれの種類のタイヤの転がり抵抗についての情報である。 Another fuel consumption comparison method of the present invention is a fuel consumption comparison method for comparing the fuel consumption of vehicles based on the difference in the type of tires to be mounted. A vehicle running state measuring step for measuring the amount and at least one characteristic value indicating a vehicle running state including at least a running distance over time, and a characteristic measured by the running condition comparing means in the vehicle running state measuring step. A running condition comparison step for comparing a value with a predetermined running condition of the vehicle, and extracting a time zone in which the vehicle has traveled when the characteristic value matches the running condition; The fuel consumption calculation step for calculating the fuel consumption of the vehicle based on the fuel consumption amount and the travel distance only in the time zone extracted in the traveling condition comparison step, and the fuel consumption calculation means are a predetermined type A fuel consumption estimation step for estimating the fuel consumption of a vehicle equipped with a tire of a type different from the tire worn by the vehicle, corresponding to the fuel consumption of the vehicle calculated in the fuel consumption calculation step based on the fuel consumption information of A fuel efficiency comparison step for calculating a difference between the fuel efficiency of the vehicle calculated in the fuel efficiency calculation step and the fuel efficiency of a vehicle mounted with a tire of a type different from the tire mounted on the vehicle, estimated in the fuel efficiency estimation step; It is comprised from these. According to this fuel consumption comparison method, it is possible to easily compare the fuel consumption of vehicles equipped with various types of tires without actually running the comparison target tires.
“Fuel consumption information” here refers to information necessary to estimate the fuel consumption of a vehicle equipped with another type of tire from the fuel consumption of a vehicle equipped with a certain type of tire. This is information on the rolling resistance of the tire.

この発明の燃費算出方法によれば、一定の車両走行状態の影響を排除した燃費を算出することができる。また、この発明の燃費比較方法によれば、装着するタイヤの種類の相異に基づく車両の燃費を一定の車両走行状態の影響が排除された状態で比較することができる。そして、この発明のタイヤ選定方法によれば、燃料費を有効に削減することができるタイヤを選定することができる。   According to the fuel consumption calculation method of the present invention, it is possible to calculate the fuel consumption excluding the influence of a certain vehicle running state. In addition, according to the fuel consumption comparison method of the present invention, it is possible to compare the fuel consumption of vehicles based on the difference in the type of tire to be mounted in a state in which the influence of a certain vehicle running state is excluded. And according to the tire selection method of this invention, the tire which can reduce fuel cost effectively can be selected.

本発明に係る燃費算出方法、燃費比較方法またはタイヤ選定方法の一の実施形態に用いられる燃費算出システムの構成を示す図である。It is a figure which shows the structure of the fuel consumption calculation system used for one Embodiment of the fuel consumption calculation method, fuel consumption comparison method, or tire selection method which concerns on this invention. 図１の燃費算出システムの制御構成を示す機能ブロック図である。It is a functional block diagram which shows the control structure of the fuel consumption calculation system of FIG. 車両走行状態計測手段が計測したエンジン回転数と燃料消費量との一例を示すグラフである。It is a graph which shows an example of the engine speed and fuel consumption which the vehicle travel state measurement means measured. 車両走行状態計測手段が計測した車両の速度の一例を示すグラフである。It is a graph which shows an example of the speed of the vehicle which the vehicle travel state measurement means measured. タイヤの転がり抵抗と燃費との関係を示すグラフである。It is a graph which shows the relationship between the rolling resistance of a tire, and a fuel consumption. 本発明に基づいて燃費を算出し比較する際のフローチャートの一例である。It is an example of the flowchart at the time of calculating and comparing a fuel consumption based on this invention.

以下に、図面を参照しつつ、この発明の実施の形態を例示説明する。
（システム構成）
図１は、本発明に係る燃費算出方法、燃費比較方法またはタイヤ選定方法の一の実施形態に用いられる燃費算出システムの構成図である。燃費算出システム１は、車両走行状態の影響を排除した燃費を算出するのに好適なシステムである。なお、この燃費算出システムの説明において、「ユーザ」とは、端末を操作して実走行に基づく車両の燃費を算出する者をいい、例えばドライバ、運送業者、タイヤ販売業者である。燃費算出システム１は、複数の車両２と、サーバ３と、一台以上の端末４から構成され、サーバ３はネットワーク５を介して、車両２、端末４のそれぞれと通信可能に接続される。車両２はサーバ３に、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す特性値を送信する。車両２とサーバ３とを接続するネットワーク５の例として、無線回線や衛星回線などがある。サーバ３は、燃費を算出して、端末４に表示するサーバである。端末４は、サーバ３が算出した燃費の情報を受け取って表示する。端末４の例として、ＰＣやＰＤＡ、携帯電話等の様々な機器を使用することができる。サーバ３と端末４とを一体化させることもできる。なお、サーバ３と端末４との間のインターフェースは、例えば、サーバ３がＷＥＢサーバを立ち上げ、端末４がＷＥＢブラウザを備えて、ＨＴＴＰやＨＴＴＰＳによる通信で実現することができる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(System configuration)
FIG. 1 is a configuration diagram of a fuel consumption calculation system used in one embodiment of a fuel consumption calculation method, a fuel consumption comparison method, or a tire selection method according to the present invention. The fuel consumption calculation system 1 is a system suitable for calculating the fuel consumption without the influence of the vehicle running state. In the description of the fuel consumption calculation system, the “user” refers to a person who operates the terminal to calculate the fuel consumption of the vehicle based on actual traveling, and is, for example, a driver, a carrier, or a tire dealer. The fuel consumption calculation system 1 includes a plurality of vehicles 2, a server 3, and one or more terminals 4, and the server 3 is connected to each of the vehicles 2 and the terminals 4 via the network 5 so as to be communicable. The vehicle 2 transmits to the server 3 a characteristic value indicating the vehicle travel state including the fuel consumption and at least the travel distance. Examples of the network 5 that connects the vehicle 2 and the server 3 include a wireless line and a satellite line. The server 3 is a server that calculates fuel consumption and displays it on the terminal 4. The terminal 4 receives and displays the fuel consumption information calculated by the server 3. As an example of the terminal 4, various devices such as a PC, a PDA, and a mobile phone can be used. The server 3 and the terminal 4 can be integrated. Note that the interface between the server 3 and the terminal 4 can be realized by communication using HTTP or HTTPS, for example, when the server 3 starts up a WEB server and the terminal 4 includes a WEB browser.

（車両の構成）
図１、２に示すように、車両２は、燃料消費量計測手段２１、ＴＰＭＳ２２、運行記録用計器２３、ＧＰＳ２４等からなる車両走行状態計測手段と、情報通信手段２５とを具える。なお、これらの機器はあくまで例示であって、車両は車両走行状態計測手段として他の各種機器を具えることができる。燃料消費量計測手段２１は、車両２に取り付けられて、燃料消費量を計測する。燃料消費量計測手段は、例えば燃料計とすることができる。燃料消費量計測手段２１が計測した情報は定期的に、好ましくは１分ごとに、車両２の情報通信手段２５に無線で送信される。ＴＰＭＳ２２は、車両２のホイール等に取り付けられて、タイヤの内圧・温度等を計測する。運行記録用計器２３は、車両２の走行距離・速度、エンジン回転数、アイドリング時間、車両２の加速度等を計測する。ＧＰＳ２４は、車両２の位置を計測する。これらの車両走行状態を示す特性値に関する情報も定期的に情報通信手段２５に送信される。車両２の情報通信手段２５は、ネットワーク５を介してサーバ３と通信を行う。 (Vehicle configuration)
As shown in FIGS. 1 and 2, the vehicle 2 includes a vehicle running state measuring unit including a fuel consumption measuring unit 21, a TPMS 22, an operation recording instrument 23, a GPS 24, and the like, and an information communication unit 25. Note that these devices are merely examples, and the vehicle can include various other devices as vehicle running state measuring means. The fuel consumption measuring means 21 is attached to the vehicle 2 and measures the fuel consumption. The fuel consumption measuring means can be a fuel meter, for example. Information measured by the fuel consumption measuring means 21 is transmitted wirelessly to the information communication means 25 of the vehicle 2 periodically, preferably every minute. The TPMS 22 is attached to a wheel or the like of the vehicle 2 and measures tire internal pressure, temperature, and the like. The operation recording meter 23 measures the travel distance / speed of the vehicle 2, the engine speed, the idling time, the acceleration of the vehicle 2, and the like. The GPS 24 measures the position of the vehicle 2. Information regarding the characteristic values indicating the vehicle running state is also periodically transmitted to the information communication unit 25. The information communication means 25 of the vehicle 2 communicates with the server 3 via the network 5.

（サーバの構成）
図２に示すように、サーバ３は、データベース３１と、走行条件比較手段３２と、燃費算出手段３３と、推奨タイヤ選定手段３４と、情報通信手段３５とを具える。データベース３１は、燃費を算出するために必要な各種情報を格納する。各種情報とは具体的には、それぞれの車両に対して燃費を算出する時間帯を決定するための、車両の走行条件や、燃費を推定するためのタイヤの燃費情報等である。走行条件比較手段３２は、それぞれの車両２が有する車両走行状態計測手段が計測した特性値と、データベース３１に格納された前記車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する。燃費算出手段３３は、車両のそれぞれに対し、走行条件比較手段３２が抽出した時間帯のみの、該車両が計測した燃料消費量と、該車両の走行距離とに基づいて各種類のタイヤを装着した車両の燃費を算出し、該各種類のタイヤを装着した車両の燃費の差を算出する。データベース３１に格納されたタイヤの燃費情報に基づいて、燃費算出手段３３が算出した各種類のタイヤを装着した車両の燃費に対応する、該車両が装着したタイヤとは異なる種類のタイヤを装着した車両の燃費を算出することもできる。推奨タイヤ選定手段３４は、データベース３１に格納されたタイヤの寿命や、ユーザニーズ情報を用いて、燃費算出手段３３が算出した各種類のタイヤを装着した車両の燃費の差に基づき、１つ以上の推奨タイヤを選定する。サーバ３の情報通信手段３５は、ネットワーク５を介して車両２及び端末４と通信を行う。 (Server configuration)
As shown in FIG. 2, the server 3 includes a database 31, a traveling condition comparison unit 32, a fuel consumption calculation unit 33, a recommended tire selection unit 34, and an information communication unit 35. The database 31 stores various information necessary for calculating fuel consumption. Specifically, the various information includes vehicle driving conditions for determining a time zone for calculating the fuel consumption for each vehicle, tire fuel consumption information for estimating the fuel consumption, and the like. The traveling condition comparison unit 32 compares the characteristic value measured by the vehicle traveling state measuring unit included in each vehicle 2 with the traveling condition of the vehicle stored in the database 31, and the characteristic value becomes the traveling condition. A matching time zone in which the vehicle has traveled is extracted. The fuel consumption calculation means 33 attaches each type of tire to each vehicle based on the fuel consumption measured by the vehicle and the travel distance of the vehicle only during the time period extracted by the travel condition comparison means 32. The fuel consumption of the vehicle is calculated, and the difference in the fuel consumption of the vehicle equipped with each type of tire is calculated. Based on the fuel consumption information of the tire stored in the database 31, a tire of a type different from the tire mounted on the vehicle corresponding to the fuel consumption of the vehicle mounted with each type of tire calculated by the fuel consumption calculation means 33 is mounted. The fuel consumption of the vehicle can also be calculated. One or more recommended tire selection means 34 is based on the difference in fuel consumption of the vehicle equipped with each type of tire calculated by the fuel consumption calculation means 33 using the life of the tire stored in the database 31 or user needs information. Recommended tires are selected. The information communication means 35 of the server 3 communicates with the vehicle 2 and the terminal 4 via the network 5.

（端末の構成）
図２に示すように、端末４は、情報通信手段４１と、表示画面４２と、印刷手段４３とを具える。情報通信手段４１は、ネットワーク５を介してサーバ３との間で情報を送受信する機能を有する。情報通信手段としては、インターネット回線に接続可能なＷＥＢブラウザを利用することができる。表示画面４２には、サーバ３が算出した燃費が表示される。印刷手段４３は、表示画面４２に表示されている内容等を印刷することができる。 (Terminal configuration)
As shown in FIG. 2, the terminal 4 includes an information communication unit 41, a display screen 42, and a printing unit 43. The information communication unit 41 has a function of transmitting / receiving information to / from the server 3 via the network 5. As the information communication means, a WEB browser connectable to the Internet line can be used. The fuel consumption calculated by the server 3 is displayed on the display screen 42. The printing unit 43 can print the contents displayed on the display screen 42.

（システム機能の説明）
図１及び図２を参照して、実走行に基づく車両燃費を算出するシステムの説明を行う。 (Explanation of system functions)
With reference to FIG.1 and FIG.2, the system which calculates the vehicle fuel consumption based on actual driving | running | working is demonstrated.

（計測した特性値が走行条件に合致する車両が走行した時間帯の抽出、及び該時間帯の燃費の算出）
走行条件比較手段３２が実施する、計測した特性値が車両の走行条件に合致する、車両が走行した時間帯を抽出する方法の一例と、燃費算出手段３３が実施する、該時間帯の燃費の算出方法の一例とを以下に示す。
（１）車両走行状態計測手段は、燃料消費量及び少なくとも走行距離を含む車両走行状態を示す特性値を計測する。
例えば、燃料消費量計測手段２１は燃料消費量を計測し、ＴＰＭＳ２２はタイヤの内圧及びタイヤの温度を計測し、運行記録用計器２３は車両２の走行距離・速度、エンジン回転数、アイドリング時間、車両の加速度を計測し、ＧＰＳ２４は車両２の位置を計測する。
（２）車両２の情報通信手段２５は、燃料消費量計測手段２１が計測した燃料消費量と、ＴＰＭＳ２２、運行記録用計器２３、ＧＰＳ２４等が計測した特性値とをサーバ３に送信する。なお、情報通信手段２５は燃料消費量及び特性値とともに、これらの値を計測した時間を送信する。加えて、情報通信手段２５は車両２を識別する情報、車両２に装着されたタイヤを識別する情報等を送信することができる。
（３）サーバ３の情報通信手段３５は、燃料消費量及び特性値を受信する。走行条件比較手段３２は、該車両走行状態計測手段が計測した該特性値と、データベース３１に格納された車両の走行条件とを比較して、該特性値が該車両の走行条件に合致する、車両２が走行した時間帯を抽出する。図３に示す例では、車両の走行条件を、「エンジン回転数が１０００ｒｐｍ〜２０００ｒｐｍ」と設定している。エンジン回転数をこの範囲内に維持して車両を走行させることで、燃費が良好になると考えられるからである。いま、車両走行状態計測手段が計測した特性値（エンジン回転数）、燃料消費量が、それぞれ図３（ａ）、（ｂ）に示すものであったとすると、図３（ａ）より、車両の走行条件に合致する時間帯は、時間０〜ｔ１、ｔ２〜ｔ３、ｔ４〜ｔ５またはｔ６〜 である。なお、上記の例では、該車両の走行条件を、エンジン回転数の範囲で設定したが、該走行条件を他の特性値の範囲で設定することもできる。例えば走行条件を、一定速度で走行しているとき、具体的には、例えば「車両の走行速度が、５０ｋｍ／ｈ〜８０ｋｍ／ｈかつ、加速度の絶対値が１．０ｍ／ｓ２以下」とする。このとき、運行記録用計器２３によって計測された車両の速度が図４に示すものであり、図４に折れ線で示される速度の傾斜部分の傾きの絶対値がすべて１．０ｍ／ｓ２ より大であったとすると、車両の走行条件に合致する時間帯は、時間ｔ７〜ｔ８ となる。さらに例えば、上記のエンジン回転数に加えて、上記の車両の走行速度及び加速度を走行条件として設定することもでき、その場合は、これらの特性値が車両の走行条件に合致する時間帯は、「時間０〜ｔ１、ｔ２〜ｔ３、ｔ４〜ｔ５またはｔ６〜」かつ「時間ｔ７〜ｔ８」である時間帯となる。後述するように、上述した過程でドライバの癖や問題点等を推測して、ドライバの啓蒙に利用することもできる。
（４）燃費算出手段３３は、計測した特性値が車両走行条件に合致する時間帯のみの燃料消費量に基づいて、実走行に基づく車両の燃費を算出する。具体的には、図３（ｂ）の実線部分である、車両の走行条件に合致する時間帯内の各時間における燃料消費量を積分して、総燃料消費量Ｆｔを算出する。この総燃料消費量Ｆｔと、該時間帯のみの車両の総走行距離Ｌより、実走行に基づく車両の燃費ｆｉ（＝Ｆｔ／Ｌ、リットル／ｋｍ）を求めることができる。この燃費は、上述した走行条件に合致しない車両走行状態の影響を排除した燃費である。なお、車両走行状態計測手段が計測した燃料消費量が、ここでいう総燃料消費量に該当する場合にも、燃費ｆｉを求めることができる。この場合には、上述した時間帯以外に走行した距離分を、総燃料消費量から差し引く。
（５）ここで、燃費は、例えばエンジン回転数が所定の範囲を超えているとき（例えばアクセルを吹かし過ぎているとき）、及び車両の速度が所定の範囲を超えているとき（例えばアイドリング中）に大きく変動する。そのため、前記特性値が、エンジン回転数と、車両の速度とを含み、前記走行条件を、エンジン回転数が例えば１０００ｒｐｍ〜２０００ｒｐｍ、より好ましくは１０００ｒｐｍ〜１５００ｒｐｍの範囲であるとともに、車両の速度が例えば５０ｋｍ〜８０ｋｍ、より好ましくは６０ｋｍ／ｈ〜７０ｋｍ／ｈとすることが好ましい。上記の各条件のいずれにも合致していないときとすることで、より適切に、タイヤを装着した車両の燃費を比較することができる。燃費は、タイヤが低内圧状態の際にも悪化する。そのため、より好ましくは、前記特性値がさらにタイヤの内圧を含み、前記走行条件が、タイヤが低内圧状態でない場合（例えば、タイヤの内圧が１００ｋＰａ以上）を含むことが、実走行に基づく車両の燃費をより正確に算出する点で好ましい。 (Extraction of the time zone in which a vehicle whose measured characteristic value matches the driving condition traveled and calculation of fuel consumption in the time zone)
An example of a method for extracting a time zone during which the vehicle has traveled, in which the measured characteristic value matches the vehicle running condition, which is executed by the driving condition comparison unit 32, and a fuel consumption of the time zone which is executed by the fuel consumption calculating unit 33. An example of the calculation method is shown below.
(1) The vehicle travel state measuring means measures a characteristic value indicating a vehicle travel state including a fuel consumption amount and at least a travel distance.
For example, the fuel consumption measuring means 21 measures the fuel consumption, the TPMS 22 measures the tire internal pressure and the tire temperature, and the operation recording instrument 23 is the mileage / speed of the vehicle 2, the engine speed, the idling time, The acceleration of the vehicle is measured, and the GPS 24 measures the position of the vehicle 2.
(2) The information communication unit 25 of the vehicle 2 transmits to the server 3 the fuel consumption measured by the fuel consumption measuring unit 21 and the characteristic values measured by the TPMS 22, the operation recording instrument 23, the GPS 24, and the like. In addition, the information communication means 25 transmits the time which measured these values with fuel consumption and a characteristic value. In addition, the information communication unit 25 can transmit information for identifying the vehicle 2, information for identifying a tire mounted on the vehicle 2, and the like.
(3) The information communication means 35 of the server 3 receives the fuel consumption amount and the characteristic value. The traveling condition comparison unit 32 compares the characteristic value measured by the vehicle traveling state measuring unit with the traveling condition of the vehicle stored in the database 31, and the characteristic value matches the traveling condition of the vehicle. The time zone in which the vehicle 2 travels is extracted. In the example illustrated in FIG. 3, the traveling condition of the vehicle is set as “the engine speed is 1000 rpm to 2000 rpm”. This is because it is considered that fuel efficiency is improved by maintaining the engine speed within this range and running the vehicle. Now, assuming that the characteristic value (engine speed) and fuel consumption measured by the vehicle running state measuring means are as shown in FIGS. 3A and 3B, respectively, from FIG. time zone that matches the running condition is the time 0~t 1, t 2 ~t 3, t 4 ~t 5 or t 6 ~. In the above example, the running condition of the vehicle is set in the range of the engine speed, but the running condition can be set in a range of other characteristic values. For example, when the vehicle is traveling at a constant speed, specifically, for example, “the vehicle traveling speed is 50 km / h to 80 km / h and the absolute value of acceleration is 1.0 m / s 2 or less”. To do. At this time, the speed of the vehicle measured by the operation recording instrument 23 is as shown in FIG. 4, and the absolute values of the slopes of the speed indicated by the broken line in FIG. 4 are all greater than 1.0 m / s 2. When it was the time period that matches the running condition of the vehicle, a time t 7 ~t 8. Further, for example, in addition to the above engine speed, the traveling speed and acceleration of the vehicle can also be set as traveling conditions. In this case, the time zone in which these characteristic values match the traveling conditions of the vehicle is “Time 0 to t 1 , t 2 to t 3 , t 4 to t 5 or t 6 to” and “time t 7 to t 8 ” are set. As will be described later, it is possible to guess the driver's wrinkles and problems in the above-described process and use it for enlightening the driver.
(4) The fuel consumption calculation means 33 calculates the fuel consumption of the vehicle based on the actual travel based on the fuel consumption only in the time zone when the measured characteristic value matches the vehicle travel conditions. Specifically, the total fuel consumption amount Ft is calculated by integrating the fuel consumption amount at each time within the time zone that matches the driving condition of the vehicle, which is the solid line portion in FIG. From the total fuel consumption Ft and the total travel distance L of the vehicle only in the time period, the fuel consumption fi (= Ft / L, liter / km) of the vehicle based on actual travel can be obtained. This fuel consumption is a fuel consumption that eliminates the influence of the vehicle running state that does not meet the above-described running conditions. The fuel consumption fi can also be obtained when the fuel consumption measured by the vehicle running state measurement means corresponds to the total fuel consumption here. In this case, the distance traveled outside the above-described time zone is subtracted from the total fuel consumption.
(5) Here, the fuel consumption is, for example, when the engine speed exceeds a predetermined range (for example, when the accelerator is blown too much) and when the vehicle speed exceeds a predetermined range (for example, during idling) ) Greatly fluctuate. Therefore, the characteristic value includes the engine speed and the speed of the vehicle, and the traveling condition is that the engine speed is in a range of, for example, 1000 rpm to 2000 rpm, more preferably 1000 rpm to 1500 rpm, and the speed of the vehicle is, for example, 50 km to 80 km, more preferably 60 km / h to 70 km / h is preferable. By setting the time when none of the above conditions is met, the fuel consumption of the vehicle equipped with the tire can be compared more appropriately. The fuel consumption is also deteriorated when the tire is in a low internal pressure state. Therefore, more preferably, the characteristic value further includes the internal pressure of the tire, and the driving condition includes a case where the tire is not in a low internal pressure state (for example, the internal pressure of the tire is 100 kPa or more). This is preferable in that the fuel consumption can be calculated more accurately.

（燃費情報に基づく燃費の推定）
図５は、所定の速度で走行している際の、タイヤの転がり抵抗と燃費との関係（燃費情報）を示すグラフである。グラフに示されるように、転がり抵抗と燃費とは、ほぼ線形の関係となる。このような燃費情報及び各種類のタイヤの転がり抵抗情報をデータベース３１に格納することができる。燃費算出手段３３は、車両に装着されたタイヤを装着した車両についての、一定の車両走行条件による影響を排除した燃費を、上記のように算出した後に、データベース３１に格納された燃費情報を用いて、該車両に装着されたタイヤとは別の種類のタイヤを装着した車両についての、同様の燃費を推定することができる。以下、推定方法の一例を説明する。
（１）車両に、ある種類のタイヤＴＡを装着した状態で、上記のように燃費ｆｉＡを算出する。
（２）燃費算出手段３３は、データベース３１を参照して、タイヤＴＡの転がり抵抗Ｒａと、燃費を推定しようとするタイヤＴＢの転がり抵抗Ｒｂと、図５に示すグラフの傾きａ（＜０）とを取得する。
（３）燃費算出手段３３は、タイヤＴＢの燃費ｆｉＢを、下記の式によって推定する。
ｆｉＢ＝ｆｉＡ＋ａ×（Ｒｂ−Ｒａ） (Estimation of fuel consumption based on fuel consumption information)
FIG. 5 is a graph showing a relationship (fuel consumption information) between tire rolling resistance and fuel consumption when traveling at a predetermined speed. As shown in the graph, the rolling resistance and the fuel consumption have a substantially linear relationship. Such fuel consumption information and rolling resistance information of each type of tire can be stored in the database 31. The fuel consumption calculation means 33 uses the fuel consumption information stored in the database 31 after calculating the fuel consumption of a vehicle equipped with a tire mounted on the vehicle, excluding the influence of a certain vehicle running condition, as described above. Thus, the same fuel consumption can be estimated for a vehicle equipped with a tire of a different type from the tire mounted on the vehicle. Hereinafter, an example of the estimation method will be described.
(1) to the vehicle, while wearing a certain kind of tires T A, and calculates the fuel consumption fi A as described above.
(2) efficiency calculating unit 33 refers to the database 31, and rolling resistance Ra of the tire T A, and rolling resistance Rb of the tire T B to be estimated fuel consumption, the slope a of the graph shown in FIG. 5 (< 0).
(3) efficiency calculating unit 33, the fuel fi B of the tire T B, is estimated by the following equation.
fi B = fi A + a × (Rb−Ra)

（燃費の比較）
燃費算出手段３３が実施する、装着するタイヤの種類を変えた場合の（下記の例では２種類）車両の燃費を比較する方法について説明する。
（１）１台目の車両ＶＡに、タイヤＴＡを装着した状態で、車両ＶＡを実走行させて、上記のように燃費ｆｉＡを算出する。この燃費ｆｉＡを求める際に、走行条件比較手段３２が抽出した時間帯をｔＡとする。
（２）車両ＶＡと同種の車両ＶＣに、別の種類の（例えばより燃費が良いと目される）タイヤＴＣを装着した状態で車両ＶＣを実走行させて、同様に燃費ｆｉＣを算出する。なお、互いに種類の異なる車両ＶＡとＶＣとを実走行させて燃費を比較することもでき、その場合には、車両の特性の違い（例えばタイヤのパタン及びサイズ等）に応じて、走行条件を補正することができる。なお、燃費ｆｉＣを求める際に、走行条件比較手段が抽出する時間帯ｔＣは、一般には上記のｔＡとは異なるものとなる。
（３）燃費算出手段３３は、算出したタイヤＴＡの燃費ｆｉＡと、タイヤＴＣの燃費ｆｉＣとの差（ｆｉＡ−ｆｉＣ）を算出する。燃費算出手段３３が、上述したように、車両ＶＡ、ＶＣが装着したタイヤとは異なる種類のタイヤＴＢの燃費ｆｉＢを推定している場合には、例えば算出したタイヤＴＡの燃費ｆｉＡと、タイヤＴＢの燃費ｆｉＢとの差（ｆｉＡ−ｆｉＢ）も算出する。必要に応じて、算出した燃費の差に、車両の平均年間走行距離と燃料価格とを乗じて、年間燃料費の差額を算出することもできる。 (Comparison of fuel consumption)
A method of comparing the fuel consumption of the vehicle when the type of tire to be mounted is changed (two types in the following example) performed by the fuel consumption calculation means 33 will be described.
(1) the first unit of the vehicle V A, while wearing the tire T A, the vehicle V A by actual running, calculates the fuel consumption fi A as described above. When obtaining the fuel efficiency fi A , the time zone extracted by the traveling condition comparison means 32 is set to t A.
(2) to the vehicle V A and the vehicle V C of the same type, by actual traveling of the vehicle V C In another type of state of mounting the tire T C (eg more fuel economy is the eye good), similarly fuel fi C is calculated. Incidentally, it is also possible to compare the fuel economy by actual running the vehicle V A and V C which mutually different, in that case, depending on the difference in the characteristics of the vehicle (e.g., pattern of the tire and size), running Conditions can be corrected. Note that the time zone t C extracted by the traveling condition comparison means when obtaining the fuel efficiency fi C is generally different from the above t A.
(3) efficiency calculating unit 33 calculates the fuel fi A of the calculated tire T A, the difference between the fuel fi C of the tire T C a (fi A -fi C). Efficiency calculating means 33, as described above, the vehicle V A, if the estimated fuel consumption fi B of different types of tires T B is the tire V C is mounted, for example, fuel consumption of the calculated tire T A and fi a, the difference between the fuel fi B of the tire T B (fi a -fi B) is also calculated. If necessary, the difference in annual fuel cost can be calculated by multiplying the calculated difference in fuel consumption by the average annual travel distance of the vehicle and the fuel price.

（推奨タイヤの選定）
推奨タイヤ選定手段３４が実施するタイヤの選定方法の一例を、次に示す。
（１）上記のようにある特定のタイヤを車両に装着して走行した場合の燃費ｆｉを算出または推定する。
（２）推奨タイヤ選定手段３４は、様々な種類のタイヤを装着した車両について算出または推定した上記燃費ｆｉの差に基づいて、例えば燃費が高い順から上位１０種類のタイヤを、推奨タイヤとして選定する。ユーザは、これらの推奨タイヤのいずれか１つを使用することで、燃料費を有効に削減することができる。
（３）必要に応じて、データベース３１に、ユーザニーズ情報を格納することで、タイヤの使用者の要求を実現することができ、より好ましくは、使用するタイヤのサイズ、路面状況（舗装路、荒地、雪路等）、タイヤの寿命といった車両の使用環境情報を格納する。推奨タイヤ選定手段３４は、該ユーザニーズ情報や該使用環境情報に基づいて推奨タイヤを選定することができる。例えば、路面状況が「雪路」である場合には、低燃費スタッドレスタイヤを選定する。 (Recommended tire selection)
An example of a tire selection method performed by the recommended tire selection means 34 will be described below.
(1) Calculate or estimate the fuel efficiency fi when traveling with a specific tire mounted on the vehicle as described above.
(2) The recommended tire selecting means 34 selects, for example, the top 10 tires in order from the highest fuel efficiency as recommended tires based on the difference in the fuel efficiency fi calculated or estimated for vehicles equipped with various types of tires. To do. The user can effectively reduce the fuel cost by using any one of these recommended tires.
(3) By storing user needs information in the database 31 as necessary, the tire user's request can be realized. More preferably, the size of the tire to be used, the road surface condition (paved road, Stores information on the environment in which the vehicle is used, such as wasteland, snowy roads, and tire life. The recommended tire selection means 34 can select a recommended tire based on the user needs information and the usage environment information. For example, when the road surface condition is “snowy road”, a fuel-efficient studless tire is selected.

（ドライバの啓蒙）
走行条件比較手段３２が、上記のように、車両の走行条件に合致する、車両が走行した時間帯を抽出する際に、ドライバの啓蒙に役立つ情報を生成することができる。例えば、図３に示すエンジン回転数と燃料消費量とから、時間ｔ１〜ｔ２、ｔ３〜ｔ４では車両を急加速させており、時間ｔ５〜ｔ６ではアイドリングを行っているために、燃費が悪化していることが推定できる。このように、車両状態計測手段が計測した燃料消費量及び／または特性値を解析することで、ドライバの癖やドライバの問題点を分析することができ、例えば急加速を控えるように指導する等、ドライバの運転技術の向上に利用することができる。 (Driver enlightenment)
As described above, when the traveling condition comparison unit 32 extracts a time zone in which the vehicle has traveled that matches the traveling condition of the vehicle, information useful for enlightening the driver can be generated. For example, from the engine speed and fuel consumption shown in FIG. 3, the vehicle is rapidly accelerated at times t 1 to t 2 and t 3 to t 4 , and idling is performed at times t 5 to t 6 . In addition, it can be estimated that the fuel consumption has deteriorated. In this way, by analyzing the fuel consumption and / or characteristic values measured by the vehicle state measuring means, it is possible to analyze the driver's wrinkles and driver problems, for example, instructing to refrain from rapid acceleration, etc. It can be used to improve the driving skills of the driver.

（装着するタイヤの種類の相異に基づく車両の燃費を比較する際のフロー）
以下、図６のフローチャートを参照して、燃費算出システム１が、装着するタイヤの種類の相異に基づく車両の燃費を比較する際のフローの一例を説明する。ステップＳ１０１の車両走行状態計測ステップでは、タイヤＴＡを装着した車両２に燃料消費量計測手段２１、ＴＰＭＳ２２、運行記録用計器２３、ＧＰＳ２４等の車両状態計測手段を取り付けて、燃料消費量及び少なくとも走行距離を含む車両走行状態を示す特性値を計測する。計測された燃料消費量及び特性値は、情報通信手段２５によってサーバ３に送信される。なお、燃料消費量及び特性値を送信する代わりに、車両状態計測手段が計測した燃料消費量及び特性値を記憶媒体に記憶し、サーバ３に該記憶媒体を読み込ませることもできる。また、データベース３１に予め車両状態計測手段が計測した燃料消費量及び特性値を格納しておき、該燃料消費量及び該特性値を用いて燃費を算出・推定することもできる。ここで示す例では、車両２で、図３（ａ）のようなエンジン回転数と、図３（ｂ）のような燃料消費量と、車両の走行距離とを計測する。ステップＳ２０１の走行条件比較ステップでは、サーバ３の走行条件比較手段３２は、ステップＳ１０１で車両状態計測手段が計測した特性値と、データベース３１に格納された車両の走行条件とを比較して、該特性値が該走行条件に合致する、車両２が走行した時間帯を抽出する。例えば、データベース３１に、「エンジン回転数が１０００ｒｐｍ〜２０００ｒｐｍ」という車両の走行条件を設定しておく。この条件と、車両２が計測した図３（ａ）に示すエンジン回転数とを比較すると、該特性値が該走行条件に合致する、車両２が走行した時間帯は、時間０〜ｔ１、ｔ２〜ｔ３、ｔ４〜ｔ５、ｔ６〜 である。ステップＳ３０１の燃費算出ステップでは、ステップＳ２０１で抽出した時間帯のみの前記燃料消費量と前記特性値とから、実走行に基づく車両の燃費を算出する。具体的には、図３（ｂ）の実線で示す部分が、車両の走行条件に合致する時間帯内の各時間における燃料消費量であり、この実線部分を積分して総燃料消費量Ｆｔを算出する。ステップＳ２０１で抽出した時間帯のみの総燃料消費量Ｆｔと、車両の総走行距離Ｌとによって、燃費ｆｉを算出する。なおこのステップＳ３０１では、２種類以上のタイヤについて、それぞれのタイヤを装着した車両の燃費を算出することもできる。ステップＳ４０１の燃費推定ステップでは、データベース３１に格納された燃費情報に基づいて、ステップＳ３０１で算出したタイヤＴＡの燃費ｆｉＡに対応する、タイヤＴＡとは異なる種類のタイヤＴＣの車両の燃費ｆｉＣを推定する。例えば、データベース３１から、タイヤＴＡ、ＴＣそれぞれの転がり抵抗と、図５に示す転がり抵抗と燃費との関係を示す情報とを取得する。燃費算出手段３３は、これらの情報から、タイヤＴＣの燃費ｆｉＣを推定する。なおここで、２種類以上のタイヤについて、それぞれのタイヤを装着した車両の燃費を推定することもできる。ステップＳ５０１の燃費比較ステップでは、ステップＳ３０１で算出したタイヤＴＡの燃費ｆｉＡと、ステップＳ４０１で推定したタイヤＴＣの燃費ｆｉＣとの差（ｆｉＡ−ｆｉＣ）を算出する。なお、ステップＳ３０１及び／またはステップＳ４０１で２種類以上のタイヤについて、それぞれのタイヤを装着した車両の燃費を算出もしくは推定した場合には、各々の燃費の組み合わせについて、燃費の差を算出することもできる。 (Flow for comparing vehicle fuel consumption based on the type of tires to be installed)
Hereinafter, with reference to the flowchart of FIG. 6, an example of a flow when the fuel consumption calculation system 1 compares the vehicle fuel consumption based on the difference in the type of tire to be mounted will be described. In vehicle travel state measuring step of step S101, the fuel consumption measuring unit 21 in the vehicle 2 equipped with a tire T A, TPMS22, attach the vehicle state measurement means such as operation for recording instruments 23, GPS 24, fuel consumption, and at least A characteristic value indicating a vehicle traveling state including a traveling distance is measured. The measured fuel consumption and characteristic value are transmitted to the server 3 by the information communication means 25. Instead of transmitting the fuel consumption amount and the characteristic value, the fuel consumption amount and the characteristic value measured by the vehicle state measuring means can be stored in the storage medium, and the server 3 can read the storage medium. It is also possible to store the fuel consumption amount and the characteristic value measured in advance by the vehicle state measuring means in the database 31 and calculate / estimate the fuel consumption using the fuel consumption amount and the characteristic value. In the example shown here, the vehicle 2 measures the engine speed as shown in FIG. 3A, the fuel consumption as shown in FIG. 3B, and the travel distance of the vehicle. In the traveling condition comparison step of step S201, the traveling condition comparison unit 32 of the server 3 compares the characteristic value measured by the vehicle state measuring unit in step S101 with the traveling condition of the vehicle stored in the database 31. A time zone in which the vehicle 2 travels where the characteristic value matches the travel condition is extracted. For example, a vehicle running condition of “the engine speed is 1000 rpm to 2000 rpm” is set in the database 31. When this condition is compared with the engine speed measured by the vehicle 2 shown in FIG. 3A, the time zone in which the vehicle 2 travels when the characteristic value matches the travel condition is from time 0 to t 1 , t 2 ~t 3, t 4 ~t 5, t 6 is ~. In the fuel consumption calculation step in step S301, the fuel consumption of the vehicle based on actual travel is calculated from the fuel consumption amount and the characteristic value only in the time period extracted in step S201. Specifically, the portion indicated by the solid line in FIG. 3B is the fuel consumption amount at each time within the time zone that matches the driving conditions of the vehicle, and the total fuel consumption amount Ft is obtained by integrating the solid line portion. calculate. The fuel consumption fi is calculated from the total fuel consumption amount Ft only in the time period extracted in step S201 and the total travel distance L of the vehicle. In step S301, for two or more types of tires, the fuel consumption of a vehicle equipped with each tire can be calculated. In the fuel consumption estimation step of step S401, based on the fuel consumption information stored in the database 31, the vehicle of the tire T C of a type different from the tire T A corresponding to the fuel consumption fi A of the tire T A calculated in step S301. The fuel consumption fi C is estimated. For example, the rolling resistance of each of the tires T A and T C and information indicating the relationship between the rolling resistance and the fuel consumption shown in FIG. 5 are acquired from the database 31. Efficiency calculating means 33, from the information, to estimate the fuel consumption fi C of the tire T C. Here, for two or more types of tires, it is possible to estimate the fuel consumption of a vehicle equipped with each tire. The fuel consumption comparison step of step S501, calculates the fuel consumption fi A tire T A calculated in step S301, the difference between the fuel fi C of the tire T C estimated in step S401 the (fi A -fi C). When the fuel consumption of a vehicle equipped with each tire is calculated or estimated for two or more types of tires in step S301 and / or step S401, a difference in fuel consumption may be calculated for each combination of fuel consumption. it can.

１ 燃費算出システム
２ 車両
３ サーバ
４ 端末
５ ネットワーク
２１ 燃料消費量計測手段（車両走行状態計測手段）
２２ ＴＰＭＳ（車両走行状態計測手段）
２３ 運行記録用計器（車両走行状態計測手段）
２４ ＧＰＳ（車両走行状態計測手段）
２５ 情報通信手段
３１ データベース
３２ 走行条件比較手段
３３ 燃費算出手段
３４ 推奨タイヤ選定手段
３５ 情報通信手段
４１ 情報通信手段
４２ 表示画面
４３ 印刷手段 DESCRIPTION OF SYMBOLS 1 Fuel consumption calculation system 2 Vehicle 3 Server 4 Terminal 5 Network 21 Fuel consumption measuring means (vehicle running state measuring means)
22 TPMS (vehicle running state measuring means)
23 Operation recording instrument (vehicle running state measuring means)
24 GPS (vehicle running state measuring means)
25 Information communication means 31 Database 32 Travel condition comparison means 33 Fuel consumption calculation means 34 Recommended tire selection means 35 Information communication means 41 Information communication means 42 Display screen 43 Printing means

Claims (4)

実走行に基づく車両の燃費を算出する燃費算出方法であって、
車両走行状態計測手段が、実走行する車両について、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す少なくとも１つの特性値とを、経時的に計測する車両走行状態計測ステップと、
走行条件比較手段が、該車両走行状態計測ステップで計測された特性値と、予め定められた車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する走行条件比較ステップと、
燃費算出手段が、該走行条件比較ステップで抽出された時間帯のみの該燃料消費量と該走行距離とに基づいて、該車両の燃費を算出する燃費算出ステップと、
から構成される燃費算出方法。 A fuel consumption calculation method for calculating the fuel consumption of a vehicle based on actual driving,
A vehicle running state measuring step in which the vehicle running state measuring means measures fuel consumption and at least one characteristic value indicating a vehicle running state including at least a running distance over time for a vehicle that is actually running;
The traveling condition comparison means compares the characteristic value measured in the vehicle traveling state measuring step with a predetermined traveling condition of the vehicle, and the vehicle has traveled when the characteristic value matches the traveling condition. A running condition comparison step for extracting time zones;
A fuel consumption calculating step in which a fuel consumption calculating means calculates the fuel consumption of the vehicle based on the fuel consumption amount and the travel distance only during the time period extracted in the travel condition comparison step;
A fuel consumption calculation method comprising: 前記特性値が、エンジン回転数と、車両の速度とを含み、
前記車両の走行条件は、該エンジン回転数及び該車両の速度が所定の範囲内であるときとする、請求項１に記載の燃費算出方法。 The characteristic value includes an engine speed and a vehicle speed,
The fuel consumption calculation method according to claim 1, wherein the traveling condition of the vehicle is when the engine speed and the speed of the vehicle are within a predetermined range. 装着するタイヤの種類の相異に基づく車両の燃費を比較する燃費比較方法であって、
車両走行状態計測手段が、装着したタイヤの種類が互いに異なる２台以上の実走行する車両について、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す少なくとも１つの特性値とを、経時的に計測する車両走行状態計測ステップと、
走行条件比較手段が、該車両のそれぞれについて、該車両走行状態計測ステップで計測された特性値と、予め定められた車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する走行条件比較ステップと、
燃費算出手段が、該車両のそれぞれについて、該走行条件比較ステップで抽出された時間帯のみの該燃料消費量と該走行距離とに基づいて、各種類のタイヤを装着した車両の燃費を算出する燃費算出ステップと、
該燃費算出手段が、該燃費算出ステップで算出された前記各種類のタイヤを装着した車両の燃費の差を算出する燃費比較ステップと、
から構成される燃費比較方法。 A fuel consumption comparison method for comparing the fuel consumption of vehicles based on the difference in the type of tire to be installed,
The vehicle running state measuring means calculates the fuel consumption and at least one characteristic value indicating the running state of the vehicle including at least the running distance over time for two or more actually running vehicles having different types of attached tires. Vehicle running state measuring step to be measured,
For each of the vehicles, the traveling condition comparison means compares the characteristic value measured in the vehicle traveling state measurement step with a predetermined traveling condition of the vehicle, and the characteristic value matches the traveling condition. A driving condition comparison step for extracting a time zone in which the vehicle has traveled;
The fuel consumption calculation means calculates the fuel consumption of the vehicle equipped with each type of tire based on the fuel consumption amount and the travel distance only for the time period extracted in the travel condition comparison step for each of the vehicles. A fuel consumption calculation step;
A fuel consumption comparison step in which the fuel consumption calculation means calculates a difference in fuel consumption of a vehicle equipped with each type of tire calculated in the fuel consumption calculation step;
A fuel consumption comparison method consisting of 装着するタイヤの種類の相異に基づく車両の燃費を比較する燃費比較方法であって、
車両走行状態計測手段が、実走行する車両について、燃料消費量と、少なくとも走行距離を含む車両走行状態を示す少なくとも１つの特性値とを、経時的に計測する車両走行状態計測ステップと、
走行条件比較手段が、該車両走行状態計測ステップで計測された特性値と、予め定められた車両の走行条件とを比較して、該特性値が該走行条件に合致する、該車両が走行した時間帯を抽出する走行条件比較ステップと、
燃費算出手段が、該走行条件比較ステップで抽出された時間帯のみの該燃料消費量と該走行距離とに基づいて、該車両の燃費を算出する燃費算出ステップと、
該燃費算出手段が、予め定められたタイヤの燃費情報に基づいて、該燃費算出ステップで算出された前記車両の燃費に対応する、該車両が装着したタイヤとは異なる種類のタイヤを装着した車両の燃費を推定する燃費推定ステップと、
該燃費算出ステップで算出された車両の燃費と、該燃費推定ステップで推定された、該車両が装着したタイヤとは異なる種類のタイヤを装着した車両の燃費との差を算出する燃費比較ステップと、
から構成される燃費比較方法。 A fuel consumption comparison method for comparing the fuel consumption of vehicles based on the difference in the type of tire to be installed,
A vehicle running state measuring step in which the vehicle running state measuring means measures fuel consumption and at least one characteristic value indicating a vehicle running state including at least a running distance over time for a vehicle that is actually running;
The traveling condition comparison means compares the characteristic value measured in the vehicle traveling state measuring step with a predetermined traveling condition of the vehicle, and the vehicle has traveled when the characteristic value matches the traveling condition. A running condition comparison step for extracting time zones;
A fuel consumption calculating step in which a fuel consumption calculating means calculates the fuel consumption of the vehicle based on the fuel consumption amount and the travel distance only during the time period extracted in the travel condition comparison step;
A vehicle equipped with a tire of a type different from the tire worn by the vehicle, the fuel consumption calculating means corresponding to the fuel consumption of the vehicle calculated in the fuel consumption calculating step based on predetermined fuel consumption information of the tire A fuel consumption estimation step for estimating the fuel consumption of the vehicle,
A fuel consumption comparison step for calculating a difference between the fuel consumption of the vehicle calculated in the fuel consumption calculation step and the fuel consumption of a vehicle mounted with a tire of a type different from the tire mounted on the vehicle estimated in the fuel consumption estimation step; ,
A fuel consumption comparison method consisting of
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WO2016084376A1 (en) * 2014-11-28 2016-06-02 株式会社ブリヂストン System for predicting tire failure location, and method for predicting tire failure location
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