JP2003166868A - Fuel consumption display method and fuel consumption display device - Google Patents
Fuel consumption display method and fuel consumption display deviceInfo
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- JP2003166868A JP2003166868A JP2001364320A JP2001364320A JP2003166868A JP 2003166868 A JP2003166868 A JP 2003166868A JP 2001364320 A JP2001364320 A JP 2001364320A JP 2001364320 A JP2001364320 A JP 2001364320A JP 2003166868 A JP2003166868 A JP 2003166868A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は燃費表示方法及び燃
費表示装置に係わり、特に、現在地と目的地間の各地点
における燃費を予測して表示する燃費表示方法及び燃費
表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel consumption display method and a fuel consumption display device, and more particularly to a fuel consumption display method and a fuel consumption display device for predicting and displaying fuel consumption at each point between a present location and a destination.
【０００２】[0002]
【従来の技術】ドライバにとってガソリン1リットル当
たりの走行距離を示す燃費(Km/リットル)は重要であり、
燃費が大きいほど一定走行距離毎のガソリン消費量が少
なくなりガソリン補給回数が少なくなってガソリン代を
節約することができる。このため、自動車メーカも低燃費
の自動車を開発し、自動車デーラーも低燃費を売り言葉
にして販促している。又、ドライバは低燃費走行を心掛
け、経験上会得した知識、例えば、エアコンを使うと燃費
が低下する、一般に高速道路では80Km/h走行が燃費に適
しているなどの知識、に基づいて低燃費走行する。特に
残ガソリン量が少なくなったときにはこの低燃費走行の
傾向が強くなる。従来の燃費表示装置としては、走行距離
と燃料消費量から現在あるいはそれまでの燃費を計算し
て表示するものがある。2. Description of the Related Art Fuel efficiency (Km / liter), which indicates the distance traveled per liter of gasoline, is important for drivers.
The higher the fuel consumption, the less the amount of gasoline consumed at each fixed mileage, the less the number of times of gasoline replenishment, and the more the gasoline cost can be saved. For this reason, automobile manufacturers have also developed fuel-efficient automobiles, and automobile dealers are promoting the use of fuel-efficient automobiles. In addition, the driver keeps track of low fuel consumption, based on knowledge gained from experience, such as knowledge that fuel consumption decreases when using an air conditioner, and that 80 km / h traveling is generally suitable for fuel consumption on highways. Drive with fuel efficiency. In particular, when the amount of remaining gasoline becomes small, the tendency of low fuel consumption driving becomes stronger. 2. Description of the Related Art As a conventional fuel consumption display device, there is one that calculates and displays the fuel consumption at present or up to that time based on the traveling distance and the fuel consumption amount.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の燃費表
示装置では、現時点の燃費は判るが、速度を上げたら、あ
るいはエアコンの温度を上げたら燃費はどうなるか判ら
ない。例えば、速度を80Km/hから100Km/hにあげると燃費
はどのくらい悪くなるのか、あるいは、エアコンを２６0C
から２４0Cに下げたら燃費はどのくらい悪くなるのか、
判らない問題がある。又、現在の残燃料でどの位、走行可
能であるか不明であり、燃料補給のタイミングを逃す問
題があり、途中でガソリン補給のために高速道路を降り
ざるを得なくなったりする。However, in the conventional fuel consumption display device, the fuel consumption at the present time can be known, but if the speed is increased or the temperature of the air conditioner is increased, the fuel consumption cannot be understood. For example, if the speed is increased from 80 Km / h to 100 Km / h, how much the fuel consumption will deteriorate, or if the air conditioner is set to 26 0 C
Or from the fuel consumption is how much worse Once lowered to 24 0 C,
There is a problem I do not understand. In addition, it is unclear how long the vehicle can run with the current remaining fuel, and there is a problem of missing the timing of refueling, and there is no choice but to get off the highway to refuel gasoline.
【０００４】以上から本発明の目的は、速度や設定室温
を変更した場合に燃費がどのように変化するかをドライ
バが容易に認識できるようにすることである。本発明の
別の目的は、速度や設定室温を変更した場合、あるいは変
更しない場合、燃費が目的地へ向けての走行時にどのよ
うに変化するかをドライバが容易に認識できるようにす
ることである。本発明の別の目的は、残燃料で走行可能な
距離をドライバが容易に把握できるようにすることであ
る。From the above, it is an object of the present invention to allow the driver to easily recognize how the fuel economy changes when the speed or the set room temperature is changed. Another object of the present invention is to enable a driver to easily recognize how the fuel consumption changes when traveling toward a destination when the speed or the set room temperature is changed or not changed. is there. Another object of the present invention is to make it possible for a driver to easily grasp the distance over which the remaining fuel can travel.
【０００５】[0005]
【課題を解決するための手段】本発明の第1は、燃費を
予測して表示する燃費表示装置において、車速と車室内
の温度を設定し、搭乗者、残燃料を含む車の総重量と、車
室内外の温度差と、車速とに基づいて燃費を算出し、該算
出された燃費を表示する。また、残燃料で走行可能な距
離を算出して表示する。A first object of the present invention is to set a vehicle speed and a temperature in a vehicle compartment in a fuel consumption display device for predicting and displaying fuel consumption, and to set the total weight of the vehicle including passengers and remaining fuel. The fuel consumption is calculated based on the temperature difference between the inside and outside of the vehicle and the vehicle speed, and the calculated fuel consumption is displayed. Also, the distance that can be traveled with the remaining fuel is calculated and displayed.
【０００６】本発明の第2は、現在地と目的地間の燃費を
予測して表示する燃費表示装置において、車速と車室内
の温度を設定し、搭乗者、残燃料を含む車の総重量と、車
室内外の温度差と、車速と、高低差などの地理的環境とに
基づいて所定の走行距離毎に燃費を算出し、得られた燃
費を車の走行距離に対応させてグラフで表示する。又、
残燃料で走行可能な距離を算出して表示する。A second aspect of the present invention is a fuel consumption display device for predicting and displaying the fuel consumption between the present location and the destination, setting the vehicle speed and the temperature in the passenger compartment, and measuring the total weight of the vehicle including passengers and remaining fuel. , Calculates the fuel consumption for each predetermined mileage based on the temperature difference inside and outside the vehicle, the vehicle speed, and the geographical environment such as height difference, and displays the obtained fuel consumption in a graph corresponding to the mileage of the car To do. or,
Calculate and display the distance that can be traveled with the remaining fuel.
【０００７】第1、第2の発明によれば、速度や設定室温を
変更した場合に燃費がどのように変化するかをドライバ
が容易に認識できるようになる。又、速度や設定室温を
変更した場合、あるいは変更しない場合、目的地へ向けて
の走行時に燃費がどのように変化するかをドライバが容
易に認識できるようになる。又、残燃料で走行可能な距
離をドライバが容易に把握できるようになる。According to the first and second aspects, the driver can easily recognize how the fuel consumption changes when the speed or the set room temperature is changed. Further, if the speed or the set room temperature is changed or not changed, the driver can easily recognize how the fuel consumption changes when traveling toward the destination. In addition, the driver can easily grasp the travelable distance with the remaining fuel.
【０００８】[0008]
【発明の実施の形態】(A)全体の構成
図1は本発明の燃費装置装置の構成図であり、燃費を計算
する燃費計算部１はマイコンで構成されており、プロセ
ッサ(CPU)１ａ、ソフトウェア記憶用のROM １ｂ、RAM １
ｃを有している。RAM １cには図3(a)〜(d)に示す車両
総重量に対する走行距離テーブルTBL1、エアコン消費
燃料テーブルTBL２、勾配燃料消費係数テーブルTBL３、
車速燃料消費係数テーブルTBL４等が記憶されてい
る。BEST MODE FOR CARRYING OUT THE INVENTION (A) Overall Configuration FIG. 1 is a configuration diagram of a fuel consumption device according to the present invention. A fuel consumption calculation unit 1 for calculating fuel consumption is composed of a microcomputer, and a processor (CPU) 1a, ROM 1b and RAM 1 for software storage
have c. The RAM 1c has a mileage table TBL1 for the gross vehicle weight, an air conditioner consumption fuel table TBL2, a gradient fuel consumption coefficient table TBL3 shown in FIGS. 3 (a) to 3 (d),
The vehicle speed fuel consumption coefficient table TBL4 and the like are stored.
【０００９】燃費計算部１には、各センサー、すなわ
ち、車室内外の温度を検出する気温検出センサー2、走行
距離を検出する距離センサー３、残燃料を検出する燃料
センサー４、搭乗員を検出する搭乗員検出センサー5が接
続され、これらセンサーにより車室内外の温度、所定時
間毎の走行距離、残燃料、搭乗員数が検出されて、燃費計
算部１に入力される。又、燃費計算部１には、ナビゲーシ
ョン装置６が接続され、目的地へ向けての経路誘導中に
は誘導経路メモリ6aより誘導経路情報が入力される。誘
導経路情報は出発地から目的地までのノードを順番に配
列し、各ノードに、経緯度、ノード間の距離(リンク
長)、該リンクの勾配(高低差でもよい)、道路種別(高
速道路、国道、県道、細街路など)、交差点であるか否か
を示す交差点フラグを対応させている。The fuel consumption calculation section 1 detects each sensor, that is, an air temperature detection sensor 2 for detecting the temperature inside and outside the vehicle, a distance sensor 3 for detecting the traveling distance, a fuel sensor 4 for detecting the remaining fuel, and an occupant. An occupant detection sensor 5 is connected, and these sensors detect the temperature inside and outside the vehicle, the traveling distance at every predetermined time, the remaining fuel, and the number of occupants, and input them to the fuel consumption calculation unit 1. Further, a navigation device 6 is connected to the fuel consumption calculation unit 1, and guide route information is input from the guide route memory 6a during route guide to the destination. The guide route information arranges nodes from the starting point to the destination in order, and each node has a latitude and longitude, a distance between nodes (link length), a gradient of the link (may be a difference in height), a road type (highway). , National roads, prefectural roads, narrow streets, etc.), and an intersection flag indicating whether or not it is an intersection.
【００１０】又、燃費計算部１には、燃費や走行可能距離
等を表示する表示部7や燃費計算のためのエアコンによ
る室温や車速を設定するタッチパネル部８が接続されて
いる。図2はタッチパネル付き表示装置例であり、表示部
７には、現在の室温、時速、及びその時の燃費、走行可
能距離及び変更後の室温、時速、及びその時の燃費、走
行可能距離が表示され、タッチパネル部８には室温アッ
プキー８1、室温ダウンキー８2、車速アップキー８3、車速
ダウンキー８4、リセットキー８5、戻りキー８6等が設け
られている。Further, the fuel consumption calculation unit 1 is connected to a display unit 7 for displaying fuel consumption, a possible traveling distance, etc., and a touch panel unit 8 for setting a room temperature and a vehicle speed by an air conditioner for fuel consumption calculation. FIG. 2 shows an example of a display device with a touch panel. The display unit 7 displays the current room temperature, hourly speed, fuel consumption at that time, travelable distance and changed room temperature, hourly speed, fuel consumption at that time, travelable distance. The touch panel portion 8 is provided with a room temperature up key 8 1 , a room temperature down key 8 2 , a vehicle speed up key 8 3 , a vehicle speed down key 8 4 , a reset key 8 5 , a return key 8 6 and the like.
【００１１】（B）燃費計算
燃費は次式
燃費(km/リットル)=走行距離(km)／消費燃料(リットル) (1)
により求まる。ここで、右辺の走行距離は、車両総重量に
対する燃料基準量(例えば1リットル)当たりの走行距離
であり、図3(a)に示すように車両総重量が重くなる程、
走行距離は短くなる。車両総重量(kg)は次式
車両総重量(kg)＝本体重量(kg)+搭乗者重量(kg)+残燃料の重量(kg) (2)
により求まる重量である。(B) Calculation of fuel consumption The fuel consumption is calculated by the following equation: fuel consumption (km / liter) = mileage (km) / fuel consumption (liter) (1). Here, the mileage on the right side is a mileage per fuel reference amount (for example, 1 liter) with respect to the total vehicle weight, and as the total vehicle weight becomes heavier as shown in FIG. 3 (a),
The mileage becomes shorter. The total vehicle weight (kg) is calculated by the following formula: total vehicle weight (kg) = body weight (kg) + passenger weight (kg) + remaining fuel weight (kg) (2).
【００１２】又、(1)式において右辺の消費燃料(リット
ル)は次式
消費燃料(リットル)=(燃料基準量+エアコンの消費燃料)×勾配燃料消費係数
×車速燃料消費係数 (3)
により求まる量である。エアコン消費燃料は、図3(b)で
示すように車室内外の温度差(外気温差)がマイナスで、
且つ、絶対値が大きくなる程、大きくなる。なお、外気温
差は次式
外気温差（0C）=外気温（0C）−内気温（0C）
より求まる値である。図3(b)は、1時間当たりのエアコン
消費燃料であるため、この値を(3)式のエアコン消費燃料
として、そのまま使用できない。使用できるようにする
には、所定距離C(例えば5.0km)走行するのに要する時間
を求め、該時間におけるエアコン消費量を図3(b)の1時間
当たりの消費燃料を用いて比例配分により求めて(3)式
のエアコン消費燃料とする。Further, the fuel consumption (liter) on the right side of the equation (1) is calculated by the following equation: fuel consumption (liter) = (fuel reference amount + fuel consumption of air conditioner) × gradient fuel consumption coefficient × vehicle speed fuel consumption coefficient (3) It is the amount that can be obtained. As shown in Fig. 3 (b), the air conditioner fuel consumption has a negative temperature difference inside and outside the vehicle (outside air temperature difference).
Moreover, the larger the absolute value, the larger. The outer air temperature difference equation outside temperature difference (0 C) = outdoor temperature (0 C) - a value obtained from the inside air temperature (0 C). Since FIG. 3 (b) shows the air-conditioner consumption fuel per hour, this value cannot be used as it is as the air-conditioner consumption fuel of the equation (3). In order to be able to use it, the time required to travel a predetermined distance C (for example, 5.0 km) is obtained, and the air conditioner consumption at that time is proportionally distributed using the fuel consumption per hour in Fig. 3 (b). The air-conditioner consumption fuel of formula (3) is obtained.
【００１３】(3)式における勾配燃料消費係数ηは坂を
登っているときに消費燃料が多くなるため、図3(c)に示
すように勾配(=高低差／水平距離)が零のとき係数値η
を1にし、勾配が大きくなる程、係数値ηを1より大きくす
る。又、下り坂においてはエンジンブレーキか掛けるため
係数値ηを1より大きくする。尚、図3(c)は一例であり、
最終的には実測値に基づいて決定する。(3)式における車
速燃料消費係数φは高速になる程消費燃料が多くなるた
め、図3(d)に示すように車速=60kmのとき係数値φを1に
し、車速が大きくなる程、係数値φを1より大きくし、車速
が小さくなる程、係数値を1より小さくする。図3(d)は一
例であり、最終的には実測値に基づいて決定する。The gradient fuel consumption coefficient η in the equation (3) consumes a large amount of fuel when climbing a slope. Therefore, as shown in FIG. 3 (c), when the gradient (= height difference / horizontal distance) is zero. Coefficient value η
Is set to 1, and the coefficient value η is set to be larger than 1 as the gradient becomes larger. In addition, the coefficient value η is made larger than 1 in order to apply the engine brake on the downhill. Incidentally, FIG. 3 (c) is an example,
Finally, it is decided based on the actual measurement value. The vehicle speed fuel consumption coefficient φ in Eq. (3) consumes more fuel at higher speeds.Therefore, as shown in Fig. 3 (d), when the vehicle speed = 60 km, the coefficient value φ is set to 1 and the higher the vehicle speed, the more The value φ is made larger than 1, and the coefficient value is made smaller than 1 as the vehicle speed becomes lower. FIG. 3D is an example, and it is finally determined based on the actual measurement value.
【００１４】（C）燃費表示例
（ａ）経路誘導制御中でない場合
図4は経路誘導制御中でない場合における燃費表示処理
フローである。ナビゲーション装置６が経路誘導制御中
でない時に、現在の環境(室温240C、時速100km)における
燃費表示が要求されると(ステップ１０１)、燃費計算部
１は、センサー出力より搭乗員数、残燃料を検出し、平均
重量×搭乗員数から搭乗員の重量を求め、又、残燃料×単
位重量より残燃料の重量を求め、これら重量に車体重量
を加算して車両総重量Ｗを計算する(ステップ１０２)。(C) Example of fuel consumption display (a) When the route guidance control is not being performed FIG. 4 is a flow chart of the fuel consumption display process when the route guidance control is not being performed. When the fuel consumption display in the current environment (room temperature of 240 ° C, speed of 100 km / hour) is requested when the navigation device 6 is not in the route guidance control (step 101), the fuel consumption calculation unit 1 determines the number of passengers and the remaining fuel consumption from the sensor output. The weight of the occupant is calculated from the average weight × the number of occupants, the weight of the residual fuel is determined from the residual fuel × the unit weight, and the vehicle weight is added to these weights to calculate the total vehicle weight W (step 102).
【００１５】ついで、燃費計算部１は、走行距離テーブ
ルTBL１から該車両総重量Ｗに対する1リットル当たりの
走行距離Ｄを求め(ステップ１０３)、次式
RF=Ｃ／Ｄ
によりＣ(ｋｍ）を走行するのに要する燃料の基準量ＲF
を求める(ステップ１０４)。なお、Cは一定距離であ
り、例えば5.0kmである。Next, the fuel consumption calculation unit 1 obtains a traveling distance D per liter with respect to the total vehicle weight W from the traveling distance table TBL1 (step 103), and travels C (km) according to the following formula RF = C / D. Reference amount of fuel required to do RF
Is calculated (step 104). Note that C is a constant distance, for example, 5.0 km.
【００１６】しかる後、燃費計算部１は、気温センサー
２より内外の温度差を求め、該温度差に応じた1時間当た
りのエアコン消費燃料ACFをテーブルTBL2より求める(ス
テップ１０５)。ついで、距離C(=5.0ｋｍ)を現車速Ｖ(=
100km)で通過するに要する時間Ｔ（＝C／Ｖ）を求め(ス
テップ１０６)、次式
Ｆ=ACF×T
により、距離C(=5.0ｋｍ)の通過中に要するエアコン消
費燃料Ｆを計算する(ステップ１０７)。After that, the fuel consumption calculation unit 1 obtains the temperature difference between the inside and the outside from the temperature sensor 2, and obtains the air-conditioner consumption fuel ACF per hour corresponding to the temperature difference from the table TBL2 (step 105). Next, the distance C (= 5.0 km) is changed to the current vehicle speed V (=
The time T (= C / V) required for passing 100 km) is calculated (step 106), and the air-conditioner consumption fuel F required for passing the distance C (= 5.0 km) is calculated by the following formula F = ACF × T. (Step 107).
【００１７】しかる後、テーブルTBL4より現車速に応じ
た車速燃料消費係数φを求め、又、勾配は0と仮定してテ
ーブルTBL3より勾配燃料消費係数η（＝1.0）を求める
(ステップ１０８)。以後、(3)式に従ってＣ（＝5.0ｋｍ)
を走行するのに要する消費燃料Gを次式
G=(RF＋Ｆ)×η×φ
により計算し(ステップ１０９)、(1)式により燃費FC
FC=Ｃ／Ｇ
を計算する（ステップ１１０)。Thereafter, the vehicle speed fuel consumption coefficient φ corresponding to the current vehicle speed is obtained from the table TBL4, and the gradient fuel consumption coefficient η (= 1.0) is obtained from the table TBL3 assuming that the gradient is 0.
(Step 108). After that, according to equation (3), C (= 5.0km)
The fuel consumption G required to drive the vehicle is calculated by the following equation G = (RF + F) × η × φ (step 109), and the fuel consumption FC FC = C / G is calculated by the equation (1) (step 110).
【００１８】以後、残燃料Eを次式
E＝E−Ｇ
により更新すると共に、走行可能距離RD(初期値は０)を
次式
RD=RD＋C
により更新し(ステップ１１１)、E>.0であるかチェック
し(ステップ１１２)、E>0であればステップ１０２以降
の処理を繰り返し、Ｅ≦０であれば、図2の左側に示すよ
うに、現在の環境と共に最初に求まった燃費FC及び走行
可能距離RDを表示する(ステップ１１３)。After that, the remaining fuel E is updated by the following equation E = EG, and the travelable distance RD (initial value is 0) is updated by the following equation RD = RD + C (step 111), and E> .0. It is checked whether there is any (step 112), and if E> 0, the processing from step 102 is repeated. If E ≦ 0, as shown on the left side of FIG. The travelable distance RD is displayed (step 113).
【００１９】又、環境を変えたときの燃費、及び走行可能
距離表示するには、タッチパネル８のキーを用いて室温
及び車速を設定すれば、変更後の環境に基づいて図4と同
様の処理を行って図2に示すように環境変更前と変更後
の燃費、及び走行可能距離表示する。尚、ステップ１０５
においては、外気温と設定室温の差を温度差としてエア
コン燃料ACFをテーブルTBL２より求める。Further, in order to display the fuel consumption and the travelable distance when the environment is changed, the room temperature and the vehicle speed are set by using the keys of the touch panel 8, and the same processing as that shown in FIG. 4 is performed based on the changed environment. Then, as shown in FIG. 2, the fuel consumption before and after the environmental change and the cruising distance are displayed. Incidentally, step 105
In the above, the air conditioner fuel ACF is obtained from the table TBL2 with the difference between the outside air temperature and the set room temperature as the temperature difference.
【００２０】（ｂ）経路誘導制御中の場合
図５は経路誘導制御中の場合における燃費表示処理フロ
ーである。ナビゲーション装置６が経路誘導制御中の
時、現在の環境(室温240C、高速道路における車速100km)
における燃費表示が要求されると(ステップ２０１)、燃
費計算部１は、ナビゲーション装置６より誘導経路情報
を取得する(ステップ２０２)。ついで、ｉ＝１とし(ス
テップ２０３)、現着目地点Ｐi-1から距離Ｃ(Ｃは所定
走行距離で例えば５ｋｍ)離れた次の着目地点Pi迄の間
に登った高さの総計Ｈを、誘導経路情報に含まれる勾配
データあるいは高低差データより求め、H／Cにより近似
的に地点間の勾配GRを求める(ステップ２０４)。又、誘
導経路情報より求まる該地点間の道路種別に基づいて高
速道路では車速100km/hを、高速道路以外では道路種別に
応じた車速(例えば制限速度)を地点Ｐi-1Pi間の速度Ｖ
として求める(ステップ２０５)。(B) During route guidance control FIG. 5 is a fuel consumption display processing flow during route guidance control. When the navigation device 6 is in the route guidance control, the current environment (room temperature 240 ° C, vehicle speed 100km on the highway)
When the fuel consumption display in is requested (step 201), the fuel consumption calculation unit 1 acquires the guide route information from the navigation device 6 (step 202). Then, i = 1 is set (step 203), and the total height H climbed up to the next point of interest P i, which is a distance C (C is a predetermined traveling distance, for example, 5 km) from the current point of interest P i-1. Is calculated from the gradient data or the height difference data included in the guide route information, and the gradient GR between points is approximately calculated by H / C (step 204). Further, based on the road type between the points obtained from the guide route information, the vehicle speed is 100 km / h on the highway, and the vehicle speed (for example, the speed limit) corresponding to the road type other than the highway is set between the points P i-1 P i . Speed V
(Step 205).
【００２１】ついで、燃費計算部１は、センサー出力よ
り搭乗員数、残燃料を検出し、平均重量×搭乗員数から搭
乗員の重量を求め、又、残燃料×単位重量より残燃料の重
量を求め、これら重量に車体重量を加算して車両総重量
Ｗを計算する(ステップ２０６)。車両総重量Ｗが求まれ
ば、燃費計算部１は、走行距離テーブルTBL１から該車両
総重量Ｗに対する1リットル当たりの走行距離Ｄを求め
(ステップ２０７)、次式
RF=Ｃ／Ｄ
によりＣ(ｋｍ）を走行するのに要する燃料の基準量ＲF
を求める(ステップ２０８)。Next, the fuel consumption calculation unit 1 detects the number of crew members and the remaining fuel from the sensor output, obtains the weight of the crew member from the average weight x number of crew members, and also obtains the weight of the remaining fuel from the remaining fuel x unit weight. Then, the vehicle weight is added to these weights to calculate the total vehicle weight W (step 206). If the total vehicle weight W is obtained, the fuel consumption calculation unit 1 obtains the traveling distance D per liter with respect to the total vehicle weight W from the traveling distance table TBL1.
(Step 207), the reference amount RF of fuel required to travel C (km) according to the following formula RF = C / D
Is calculated (step 208).
【００２２】しかる後、燃費計算部１は、気温センサー
２より内外の温度差を求め、該温度差に応じた1時間当た
りのエアコン消費燃料ACFをテーブルTBL2より求める(ス
テップ２０９)。ついで、距離C(=5.0ｋｍ)を前記車速Ｖ
で通過するに要する時間Ｔ（＝C／Ｖ）を求め(ステップ
２１０)、次式
Ｆ=ACF×T
により、距離C(=5.0ｋｍ)の通過中に要するエアコン消
費燃料Ｆを計算する(ステップ２１１)。Thereafter, the fuel consumption calculation unit 1 obtains the temperature difference between the inside and the outside from the temperature sensor 2 and obtains the air-conditioner consumption fuel ACF per hour corresponding to the temperature difference from the table TBL2 (step 209). Next, set the distance C (= 5.0 km) to the vehicle speed V
The time T (= C / V) required to pass through is calculated (step 210), and the air-conditioner consumption fuel F required during the passage of the distance C (= 5.0 km) is calculated by the following formula F = ACF × T (step). 211).
【００２３】しかる後、テーブルTBL4よりステップ205で
求めてある車速Ｖに応じた車速燃料消費係数φを求め、
又、ステップ204で求めてある勾GR配に応じた勾配消費係
数ηをテーブルTBL3より求める(ステップ２１２)。以
後、(3)式に従ってＣ（＝5.0ｋｍ)を走行するのに要する
消費燃料Gを次式
G=(RF＋Ｆ)×η×φ
により計算し (ステップ２１３)、(1)式により燃費FC
FC=Ｃ／Ｇ
を計算する（ステップ２１４)。Thereafter, the vehicle speed fuel consumption coefficient φ corresponding to the vehicle speed V obtained in step 205 is obtained from the table TBL4,
Further, the gradient consumption coefficient η corresponding to the gradient GR distribution obtained in step 204 is obtained from the table TBL3 (step 212). After that, the fuel consumption G required to travel C (= 5.0 km) according to the formula (3) is calculated by the following formula G = (RF + F) × η × φ (step 213), and the fuel consumption FC FC is calculated by the formula (1). = C / G is calculated (step 214).
【００２４】以後、残燃料Eを次式
E＝E−G
により更新すると共に、走行距離RDT(初期値は０)を次式
RDT=RDT＋C
により更新し、燃費FCと走行距離RDTを組にして保存し
(ステップ２１５)、目的地に到達したかチェックする(ス
テップ２１６)。目的地に到達すれば、図６に示すよう
に、現在の環境と共に走行距離RDTと燃費の関係をグラフ
(実線)で表示する (ステップ２１７)。After that, the remaining fuel E is updated by the following equation E = E−G, and the traveling distance RDT (initial value is 0) is updated by the following equation RDT = RDT + C, and the fuel consumption FC and the traveling distance RDT are paired. Save
(Step 215), it is checked whether the destination is reached (Step 216). After reaching the destination, as shown in Fig. 6, graph the relationship between mileage RDT and fuel consumption along with the current environment.
Display (solid line) (step 217).
【００２５】一方、目的地に到達してなければ、E>.0で
あるかチェックし(ステップ２１８)、E>0であればｉを
歩進し（ｉ＝ｉ＋１,ステップ２１９）、ステップ２０
４以降の処理を繰り返し、Ｅ≦０であれば、目的地へ到
達する途中までの走行距離RDTと燃費の関係をグラフで
表示する。ドライバはこのグラフの切れたところの走行
距離を残燃料で走行可能な距離であると認識できる（ス
テップ２１７)。尚、図６において、５１は車両現在位置
マーク、52は通過点マーク、53は目的地マークであり、斜
線部より左が高速道路走行、右側が一般道路走行であ
る。一般道路走行では信号待ち等により停車／発進、加
速／減速を繰り返すため、高速走行より燃費が悪くな
る。また、環境を変えたときの燃費と走行距離のグラフ
を表示するには、タッチパネル８のキーを用いて室温及
び高速道路における車速を設定すれば、変更後の環境(26
0C、80km/h)に基づいて図５と同様の処理を行って図６の
点線で示すように環境変更前と変更後の燃費と走行距離
の関係をグラフで表示する。尚、ステップ２０９におい
ては、外気温と設定室温の差を温度差としてエアコン燃
料ACFをテーブルTBL２より求める。On the other hand, if the destination is not reached, it is checked whether E> .0 (step 218), and if E> 0, i is incremented (i = i + 1, step 219) and step 20
If E ≦ 0 is repeated by repeating the processing from 4 onward, the relationship between the travel distance RDT up to the way to the destination and the fuel consumption is displayed in a graph. The driver can recognize that the traveled distance at the broken portion of the graph is the travelable distance with the remaining fuel (step 217). In FIG. 6, 51 is a current vehicle position mark, 52 is a passing point mark, and 53 is a destination mark. The left side of the shaded portion is highway traveling, and the right side is general road traveling. When driving on general roads, stopping / starting and accelerating / decelerating are repeated due to waiting for signals, etc., resulting in poorer fuel consumption than high-speed driving. To display a graph of fuel consumption and mileage when changing the environment, use the keys on the touch panel 8 to set the room temperature and the vehicle speed on the highway, and change the environment (26
0 C, 80 km / h), the same processing as in FIG. 5 is performed to display a graph of the relationship between the fuel consumption and the mileage before and after the environment change as shown by the dotted line in FIG. In step 209, the air conditioner fuel ACF is obtained from the table TBL2 with the difference between the outside air temperature and the set room temperature as the temperature difference.
【００２６】(D)別の構成
図7は本発明の別の構成図であり、ナビゲーション装置に
燃費計算部を設けた例である。図中、11は地図を記憶す
る地図記憶媒体としてのDVD、12はDVDから所望の地図を
読み出すDVD制御装置、１３は車両位置を検出する車両
位置測定装置、14はDVDより読み取った地図情報を記憶
する地図情報メモリ、15は探索された目的地までの誘導
経路情報を記憶する誘導経路記憶部、16は交差点におけ
る進行方向を音声で案内する音声案内部、１７はメニュ
ー選択／地図スクロール／目的地検索等の入力を行うリ
モコンユニット、18はリモコンインターフェース、19はプ
ログラムに従ってナビゲーション装置全体を制御するプ
ロセッサ(ナビゲーション制御部)、20は各種制御プログ
ラムを記憶するROM、21は処理結果等を記憶するRAM、22は
地図データ及び誘導経路データに基いて地図画像／誘導
経路画像を発生すると共に交差点拡大図を発生する画像
発生部、23はモニター装置、24はタッチパネルである。又、
３1は燃費計算部、３２は各種センサー群である。燃費計
算部３１は図1の燃費計算部１と同様に燃費計算をし、モ
ニタ２３ーに図2又は図6で示すように燃費を表示する。(D) Another configuration FIG. 7 is another configuration diagram of the present invention, which is an example in which a navigation device is provided with a fuel consumption calculation section. In the figure, 11 is a DVD as a map storage medium for storing a map, 12 is a DVD control device for reading a desired map from the DVD, 13 is a vehicle position measuring device for detecting a vehicle position, and 14 is map information read from the DVD. A map information memory to be stored, 15 is a guide route storage unit that stores guide route information to a searched destination, 16 is a voice guide unit that guides the traveling direction at an intersection by voice, 17 is menu selection / map scroll / purpose A remote control unit for inputting location search, 18 is a remote control interface, 19 is a processor (navigation control unit) for controlling the entire navigation device according to a program, 20 is a ROM storing various control programs, and 21 is a processing result and the like. RAM, 22 is an image generation unit that generates a map image / guidance route image based on the map data and the guidance route data, and generates an enlarged view of the intersection. , 23 is a monitor device, and 24 is a touch panel. or,
31 is a fuel consumption calculation unit, and 32 is a group of various sensors. The fuel consumption calculation unit 31 calculates fuel consumption in the same manner as the fuel consumption calculation unit 1 of FIG. 1, and displays the fuel consumption on the monitor 23 as shown in FIG. 2 or FIG.
【００２７】[0027]
【発明の効果】以上の本発明によれば、現在の燃費を表
示でき、しかも、速度や設定室温を変更した場合に燃費が
どのように変化するかをドライバが容易に認識できるよ
うになる。又、本発明によれば、速度や設定室温を変更し
ない場合、あるいは変更した場合、目的地へ向けての走
行時に燃費がどのように変化するかをドライバが容易に
認識できるようになる。又、本発明によれば、残燃料で走
行可能な距離をドライバが容易に把握できるようにな
る。As described above, according to the present invention, the current fuel consumption can be displayed, and the driver can easily recognize how the fuel consumption changes when the speed or the set room temperature is changed. Further, according to the present invention, the driver can easily recognize how the fuel consumption changes when traveling toward the destination if the speed or the set room temperature is not changed or is changed. Further, according to the present invention, the driver can easily grasp the distance over which the remaining fuel can travel.
【図１】本発明の燃費表示装置の構成図である。FIG. 1 is a configuration diagram of a fuel consumption display device of the present invention.
【図２】燃費及び走行可能距離表示例である。FIG. 2 is an example of a display of fuel consumption and travelable distance.
【図３】車両総重量に対する走行距離テーブル、エアコ
ン消費燃料テーブル、勾配燃料消費係数テーブル、車速燃
料消費係数テーブルの説明図である。FIG. 3 is an explanatory diagram of a mileage table for a total vehicle weight, an air conditioner consumption fuel table, a gradient fuel consumption coefficient table, and a vehicle speed fuel consumption coefficient table.
【図４】経路誘導制御中でない場合における燃費表示処
理フローである。FIG. 4 is a fuel consumption display processing flow when the route guidance control is not being performed.
【図５】経路誘導制御中の場合における燃費表示処理フ
ローである。FIG. 5 is a fuel consumption display processing flow when the route guidance control is being performed.
【図６】目的地へ到達するまでの走行距離と燃費の関係
示す表示例である。FIG. 6 is a display example showing a relationship between a traveling distance until reaching a destination and fuel consumption.
【図７】本発明の別の構成図である。FIG. 7 is another configuration diagram of the present invention.
１ 燃費計算部 ２ 気温検出センサー ３ 距離センサー ４ 燃料センサー ５ 搭乗員検出センサー ６ ナビゲーション装置 ７ 表示部 ８ タッチパネル部 1 Fuel efficiency calculator 2 Air temperature detection sensor 3 distance sensor 4 Fuel sensor 5 Crew detection sensor 6 Navigation device 7 Display 8 Touch panel section
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2F029 AA02 AB01 AB07 AB13 AC02 AC09 AC16 2F030 CC04 CE04 CE22 CE25 CE26 CE27 5H180 AA01 BB13 FF03 FF22 FF32 FF40 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 2F029 AA02 AB01 AB07 AB13 AC02 AC09 AC16 2F030 CC04 CE04 CE22 CE25 CE26 CE27 5H180 AA01 BB13 FF03 FF22 FF32 FF40
Claims (7)
おいて、車速と車室内の温度を設定し、 搭乗者、残燃料を含む車の総重量と、車室内外の温度差
と、車速とに基づいて燃費を算出し、該算出された燃費を
表示する、 ことを特徴とする燃費表示方法。1. A fuel consumption display method for predicting and displaying fuel consumption, wherein a vehicle speed and a temperature in a vehicle compartment are set, and a total weight of a vehicle including an occupant and a residual fuel, a temperature difference between the inside and the outside of the vehicle compartment, and a vehicle speed. A fuel consumption display method, characterized in that the fuel consumption is calculated based on, and the calculated fuel consumption is displayed.
する、 ことを特徴とする請求項１記載の燃費表示方法。2. The fuel consumption display method according to claim 1, further comprising calculating and displaying a travelable distance with the remaining fuel.
する燃費表示方法において、車速と車室内の温度を設定
し、 搭乗者、残燃料を含む車の総重量と、車室内外の温度差
と、車速と、高低差などの地理的環境とに基づいて所定の
走行距離毎に燃費を算出し、得られた燃費を車の走行距
離に対応させてグラフで表示する、ことを特徴とする燃
費表示方法。3. A fuel consumption display method for predicting and displaying fuel consumption between a current location and a destination, wherein a vehicle speed and a temperature in a vehicle compartment are set, and a total weight of the vehicle including passengers and residual fuel and a vehicle interior and exterior The fuel consumption is calculated for each predetermined mileage based on the temperature difference, the vehicle speed, and the geographical environment such as the height difference, and the obtained fuel consumption is displayed in a graph corresponding to the mileage of the vehicle. Fuel consumption display method.
までの誘導経路情報より燃費算出対象の地点間における
地理的高低差を求め、また、誘導経路情報より求まる該
地点間の道路種別に基づいて高速道路では前記設定され
た車速を、高速道路以外では道路種別に応じた車速を求
め、これら高低差及び車速を用いて前記地点間の燃費を
算出する、 ことを特徴とする請求項３記載の燃費表示方法。4. A vehicle speed on an expressway is set, a geographical height difference between points of fuel consumption calculation is obtained from guide route information to a destination, and based on a road type between the points obtained from the guide route information. The vehicle speed according to the road type other than the expressway is calculated on the expressway, and the vehicle speed according to the road type is calculated on the expressway, and the fuel consumption between the points is calculated using the height difference and the vehicle speed. Fuel consumption display method.
する、 ことを特徴とする請求項３記載の燃費表示方法。5. The fuel consumption display method according to claim 3, wherein a travelable distance with the remaining fuel is calculated and output.
おいて、車速と車室内の温度を設定する設定部、 搭乗者、残燃料を含む車の総重量と、室内外の温度差と、
車速に基づいて燃費を算出する燃費算出部、算出された
燃費を表示する表示部、を備えたことを特徴とする燃費
表示装置。6. A fuel consumption display device for predicting and displaying fuel consumption, a setting unit for setting a vehicle speed and a temperature in a vehicle compartment, a total weight of a vehicle including an occupant, a residual fuel, and a temperature difference between the inside and outside of the vehicle,
A fuel consumption display device comprising: a fuel consumption calculation unit that calculates fuel consumption based on vehicle speed; and a display unit that displays the calculated fuel consumption.
する燃費表示装置において、車速と車室内の温度を設定
する設定部、搭乗者、残燃料を含む車の総重量と、室内外
の温度差と、車速と、現在地と目的地間の誘導経路情報よ
り求まる高低差などの地理的環境とに基づいて所定の走
行距離毎に燃費を算出する燃費算出部、得られた燃費を
車の走行距離に対応させてグラフで表示する表示部、を
備えたことを特徴とする燃費表示装置。7. A fuel consumption display device for predicting and displaying fuel consumption between a current location and a destination, a setting unit for setting a vehicle speed and a temperature in a vehicle compartment, an occupant, a gross weight of a vehicle including remaining fuel, and indoor and outdoor conditions. Fuel consumption calculation unit that calculates the fuel consumption for each predetermined mileage based on the temperature difference, the vehicle speed, and the geographical environment such as the height difference obtained from the guide route information between the current location and the destination. A display unit for displaying a graph corresponding to the travel distance of the fuel consumption display device.
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|---|---|---|---|
| JP2001364320A JP3833931B2 (en) | 2001-11-29 | 2001-11-29 | Fuel consumption display method and fuel consumption display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001364320A JP3833931B2 (en) | 2001-11-29 | 2001-11-29 | Fuel consumption display method and fuel consumption display device |
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| Publication Number | Publication Date |
|---|---|
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| JP3833931B2 JP3833931B2 (en) | 2006-10-18 |
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| JP2008128715A (en) * | 2006-11-17 | 2008-06-05 | Honda Motor Co Ltd | Fuel consumption display system for vehicle |
| JP2009047640A (en) * | 2007-08-22 | 2009-03-05 | Alpine Electronics Inc | Onboard system and operation support method |
| US7501940B2 (en) | 2005-02-25 | 2009-03-10 | Denso Corporation | Device for displaying fuel efficiency degradation amount based on tire air pressure |
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