JP3164336B2 - Gas fuel vehicle residual fuel display - Google Patents
Gas fuel vehicle residual fuel displayInfo
- Publication number
- JP3164336B2 JP3164336B2 JP35188893A JP35188893A JP3164336B2 JP 3164336 B2 JP3164336 B2 JP 3164336B2 JP 35188893 A JP35188893 A JP 35188893A JP 35188893 A JP35188893 A JP 35188893A JP 3164336 B2 JP3164336 B2 JP 3164336B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pressure
- fuel
- tank
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Measuring Fluid Pressure (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス燃料車両の燃料タ
ンクの残量表示装置の改良に関する。なお、本書での圧
又は圧力は絶対圧力、温度は絶対温度である。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fuel tank residual quantity display device for a gas fueled vehicle. Note that the pressure
Alternatively, the pressure is an absolute pressure, and the temperature is an absolute temperature.
【０００２】[0002]
【従来の技術】近年、エネルギー対策、環境対策等の問
題から自動車の燃料として圧縮天然ガス（ＣＮＧ）の使
用が盛んになっている。そしてかかる天然ガスは、例え
ば２００kg/cm2程度の高圧でボンベに貯蔵されて車体に
搭載され、レギュレータによって所定圧に減圧してエン
ジンに供給するようにしている。2. Description of the Related Art In recent years, the use of compressed natural gas (CNG) as fuel for automobiles has become popular due to problems such as energy measures and environmental measures. The natural gas is stored in a cylinder at a high pressure of, for example, about 200 kg / cm 2 , mounted on a vehicle body, and reduced to a predetermined pressure by a regulator to be supplied to an engine.
【０００３】また、かかるタンクの残燃料が少なくなっ
たことを警報する装置として、例えば特開昭６３−２２
２２３５号のようにボンベとレギュレータ間に第１圧力
室と第２圧力室を設け、両者の圧力差を差圧センサによ
って検知することで報知手段を作動させるようにした装
置が知られている。[0003] Further, as a device for warning that the remaining fuel in the tank is low, for example, Japanese Patent Application Laid-Open No. 63-22 / 1988.
As described in Japanese Patent No. 2235, there is known a device in which a first pressure chamber and a second pressure chamber are provided between a cylinder and a regulator, and a notification means is activated by detecting a pressure difference between the two by a differential pressure sensor.
【０００４】しかし、上記の装置の場合、燃料の圧力の
みに依存しており、温度条件等を無視していることから
誤差幅が大きくなる虞れがあった。この様なときには、
一般に温度補正したところの温度補正後の圧力を使用す
ることで誤差を解消する。 即ち、周知のボイル−シャル
ルの法則（Ｐ・Ｖ／Ｔ＝Ｇ・Ｒ）、（ここでＧ：質量、
Ｖ：体積、Ｐ：絶対圧力、Ｔ：絶対温度、Ｒ：ガス定
数）から導いた、Ｐ 1 ／Ｔ 1 ＝Ｐ 2 ／Ｔ 2 なる換算式におい
て、圧力や温度を測定して得たデータを左辺のＰ 1 及び
Ｔ 1 に代入し、又右辺のＰ 2 又はＴ 2 の一方に値を与えれ
ば、残りの１つが求まり、これが換算値（補正後の圧力
Ｐ 2 又は温度Ｔ 2 ）となる。 [0004] However, in the case of the above-mentioned apparatus, there is a possibility that the error width becomes large because the above-mentioned apparatus depends only on the fuel pressure and ignores temperature conditions and the like. In such a case,
Generally, use the pressure after temperature correction after temperature correction.
To eliminate the error. That is, a well-known boil-chal
(P · V / T = GR), where G: mass,
V: volume, P: absolute pressure, T: absolute temperature, R: gas constant
Derived from the number), P 1 / T 1 = P 2 / T 2 becomes conversion formula odor
Te, the data obtained by measuring the pressure and temperature left of P 1 and
Substituting for T 1 and giving a value to either P 2 or T 2 on the right side
Then, the remaining one is found, and this is the converted value (the corrected pressure
P 2 or temperature T 2 ).
【０００５】ところで、右辺のＰ 2 又はＴ 2 をいちいち決
めるのでは面倒である。そこで、多くの場合は、右辺の
Ｐ 2 を１気圧又はＴ 2 を２７３Ｋ（＝０℃）に定め、理想
状態における圧力又は温度にして取扱い性を高めてい
る。理想状態に換算すれば圧力同士又は温度同士を直接
的に比較することができるからである。 By the way, P 2 or T 2 on the right side is determined one by one.
It is troublesome to put it. So, in most cases,
Ideally set P 2 at 1 atm or T 2 at 273K (= 0 ° C)
Pressure or temperature in the state to improve handling.
You. When converted to ideal conditions, direct pressure or temperature
This is because it is possible to make a comparison.
【０００６】[0006]
【発明が解決しようとする課題】上記した理想状態に圧
力や温度を変換し、この変換値でユーテリティなどを管
理することは産業界で広く行われている。 しかし、本発
明が対象とする圧縮天然ガス（ＣＮＧ）は、２００kg/c
m 2 程度と超高圧であるため、上記手法を使用すると次の
様な問題が起こることが分かった。 The present invention is to provide a pressure in the ideal state in which the above-mentioned
Converts force and temperature, and manages utilities etc. with this converted value.
Is widely practiced in industry. However,
The compressed natural gas (CNG) targeted by Akira is 200kg / c
m 2 level as for an ultra high pressure, the following Using the above method
It has been found that such problems occur.
【０００７】上記ボイル−シャルルの法則（Ｐ・Ｖ／Ｔ
＝Ｇ・Ｒ）は、圧力Ｐが比較的低圧であること、容積
（又は体積）Ｖが十分に大きいことが前提条件となって
いる。このことは、容器の中を気体分子が自由に飛回
り、気体分子同士の距離も十分に大きいことを意味す
る。 The above-mentioned Boyle-Charles law (PV / T)
= GR) means that pressure P is relatively low, volume
(Or volume) V must be large enough
I have. This means that gas molecules fly freely through the container.
Means that the distance between gas molecules is sufficiently large.
You.
【０００８】この点、数百気圧の容器には、容器に常温
の数百倍の量の気体を押込んでいることになり、気体分
子同士の距離がごく接近したものとなる。ニートンの万
有引力法則によれば、２つの物体（分子）に働く引力は
距離の２乗に反比例するから、高圧化することで分子距
離が著しく小さくなり、この為に分子間引力が無視でき
ないレベルまで高まり、この引力に比例して圧力Ｐが変
化する。また、一定の容器に多数の分子を詰込むと、分
子自体の体積が無視できなくなり、その分だけ 容器の有
効的な（分子が飛回れる様な）容積Ｖが変化する。従っ
て、超高圧下では、気体分子に起因する引力並びに容積
変化を無視することができないこととなる。 このため、
圧縮天然ガス（ＣＮＧ）の量を理想状態に換算して管理
するだけでは精度上問題があるといえる。 [0008] In this respect, in a container having a pressure of several hundred atmospheres, the container is kept at room temperature
Gas is pushed several hundred times the amount of gas
The distance between the children is very close. Newton's Ten Thousand
According to the law of gravitation, the gravitational force acting on two objects (molecules) is
Since it is inversely proportional to the square of the distance, increasing the pressure increases the molecular distance.
The separation is extremely small, so that the attraction between molecules can be ignored.
Level, and the pressure P changes in proportion to this attractive force.
Become Also, if a large number of molecules are packed in a certain container,
The volume of the child itself cannot be ignored , and
The effective (volume of flying molecules) volume V changes. Follow
At ultra-high pressure, the attractive force and volume due to gas molecules
The change cannot be ignored. For this reason,
Manage the amount of compressed natural gas (CNG) by converting it to an ideal state
It can be said that there is a problem in accuracy just by doing.
【０００９】[0009]
【課題を解決するための手段】そこで、本発明者等は従
来の方法に代わる換算法を各種試み、その過程で、ファ
ンデルワールスの状態式（詳細後述）の利用を検討し、
この状態式を利用することで、従来よりも格段に精度の
よい残燃料の表示法を確立することに成功した。 Therefore, the inventors of the present invention have adopted
Various conversion methods have been tried instead of the conventional method.
Consider using the Ndelwaals state equation (detailed below)
By using this state equation, the accuracy is much higher than before.
We succeeded in establishing a good indication method of remaining fuel.
【００１０】ファンデルワールスの状態式は、実在気体
の状態式と呼ばれる周知の式であるが、実在気体の状態
式は、（Ｐ＋ｎ 2 （ａ／Ｖ 2 ））・（Ｖ−ｎｂ）＝ｎＲ
Ｔ、（ここで、ａ：気体の分子間引力に係る定数、ｂ：
気体分子の大きさに係る定数、ｎ：質量、Ｖ：体積、
Ｐ：絶対圧力、Ｔ：絶対温度、Ｒ：ガス定数）で表わさ
れる式である。 [0010] Van der Waals' state equation is a real gas
Is a well-known equation called the state equation of
The equation is (P + n 2 (a / V 2 )) · (V−nb) = nR
T, (where, a: constant relating to intermolecular attractive force of gas, b:
Constants related to the size of gas molecules, n: mass, V: volume,
P: absolute pressure, T: absolute temperature, R: gas constant)
Expression.
【００１１】しかし、上記実在気体の状態式でその都
度、燃料を計算するのでは変数及び定数の数が多く、計
算が煩雑になる。そこで、本発明者等は、理想気体の状
態式（ＰＶ＝ＧＲＴ）における質量Ｇと、前記実在気体
の状態式における質量ｎとの比（ｎ／Ｇ）を予め計算し
ておき、この比（ｎ／Ｇ）を利用することにより、燃料
の計算を格段に簡略化させる手法を編み出した。すなわ
ち、比（ｎ／Ｇ）を理想状態式で求めたＧに乗じること
により、ｎに変換することができる。 そこで、この比
（ｎ／Ｇ）を実在気体変換係数ＣFと呼ぶことにする。 However, the above-mentioned state equation of the actual gas has
When calculating fuel, the number of variables and constants is large.
The calculation becomes complicated. Therefore, the present inventors have developed the ideal gas state.
Mass G in the form (PV = GRT) and the actual gas
Calculate in advance the ratio (n / G) to mass n in the state equation
By using this ratio (n / G), the fuel
A method was developed to greatly simplify the calculation of. Sand
Multiplying the ratio (n / G) by G obtained by the ideal state equation
Can be converted to n. Therefore, this ratio
(N / G) will be referred to as the real gas conversion coefficient CF.
【００１２】以上のことから、本発明の要旨は次の通り
となる。 請求項１は、ガス燃料車両の燃料タンクの残量
を表示する残燃料表示装置において、燃料タンクの近傍
のガス圧力Ｐとガス温度Ｔに基づいて理想状態の気体の
重量Ｇを求め、この理想状態の気体の重量ＧにＣFを乗
じることにより実在気体の重量ｎに変換し残量を表示す
ることを特徴とする。 From the above, the gist of the present invention is as follows.
Becomes Claim 1 shows the remaining fuel tank of a gas-fueled vehicle.
Near the fuel tank in the remaining fuel display device
Of the gas in the ideal state based on the gas pressure P and the gas temperature T of
Find the weight G and multiply CF by the weight G of this ideal gas.
To the actual gas weight n and display the remaining amount
It is characterized by that.
【００１３】[0013]
【実施例】本発明の残燃料表示装置の実施例について添
付した図面に基づき説明する。図１は残燃料計測要領の
フローチャート図、図２は燃料供給系統の模式図、図３
は燃料供給系統の車体配置の概要図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the residual fuel display device of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a flowchart of the remaining fuel measurement procedure, FIG. 2 is a schematic diagram of a fuel supply system, and FIG.
FIG. 2 is a schematic diagram of a vehicle body arrangement of a fuel supply system.
【００１４】ガス燃料車両の燃料供給系統は、図２、図
３に示すように、車両後部のトランクルームに配設され
るＣＮＧタンク１と、このタンク１から取り出した圧縮
天然ガス（ＣＮＧ）を車両の前方に送給するキャビン下
方の高圧配管２と、車両前方のエンジンルームに配設さ
れガス圧を減圧する一次圧力レギュレータ４、二次圧力
レギュレータ５と、減圧されたガスをインジェクタ７か
ら噴射するエンジン６を備え、このエンジン６の排気ガ
ス系統には排ガスを処理する触媒コンバータ８が設けら
れている。As shown in FIGS. 2 and 3, the fuel supply system of the gas-fueled vehicle includes a CNG tank 1 disposed in a trunk room at the rear of the vehicle and a compressed natural gas (CNG) taken out of the tank 1. , A high-pressure pipe 2 below the cabin for feeding in front of the vehicle, a primary pressure regulator 4 and a secondary pressure regulator 5 disposed in an engine room in front of the vehicle to reduce the gas pressure, and the reduced-pressure gas is injected from the injector 7. An engine 6 is provided, and an exhaust gas system of the engine 6 is provided with a catalytic converter 8 for treating exhaust gas.
【００１５】そして、前記タンク１内には、例えば最大
充填圧２１１kg/cm2のメタンガスを主成分とし、プロパ
ン、ブタン等を含む天然圧縮ガスが充填されており、前
記一次圧力レギュレータ４、及び二次圧力レギュレータ
５によってガス圧を３．５kg/cm 2 （絶対圧）まで減圧す
る。The tank 1 is filled with a natural compressed gas containing, for example, methane gas having a maximum filling pressure of 211 kg / cm 2 as a main component and propane, butane and the like. Next, the gas pressure is reduced by the pressure regulator 5 to 3.5 kg / cm 2 (absolute pressure) .
【００１６】ところで、前記高圧配管２の上流側の途中
には、タンクガス検知部３を設けており、このタンクガ
ス検知部３には、タンクガス圧ＰF0を検知する圧力セン
サ１０と、タンクガス温度ＴF0を検知する温度センサ１
１を設け、タンクガスの圧力と温度を測定出来るように
するとともに、これらセンサ１０、１１を電子制御ユニ
ット(ECU)に接続している。また、このタンクガス検知
部３にはガスの性状を検知する燃料性状センサ１５を設
け、例えばメタン何％というようなガス性状ＦMを検知
して電子制御ユニット(ECU)に送るようにしている。A tank gas detector 3 is provided in the middle of the high pressure pipe 2 on the upstream side. The tank gas detector 3 includes a pressure sensor 10 for detecting the tank gas pressure PF0, a tank gas Temperature sensor 1 for detecting temperature TF0
1 is provided so that the pressure and temperature of the tank gas can be measured, and these sensors 10 and 11 are connected to an electronic control unit (ECU). Further, the tank gas detecting section 3 is provided with a fuel property sensor 15 for detecting the property of the gas, and detects a gas property FM such as a percentage of methane and sends it to an electronic control unit (ECU).
【００１７】また、この電子制御ユニット(ECU)には燃
料計１２（図３）が接続されており、電子制御ユニット
(ECU)で演算した残燃料を表示出来るようにしている。A fuel gauge 12 (FIG. 3) is connected to the electronic control unit (ECU).
The remaining fuel calculated by (ECU) can be displayed.
【００１８】因みに、この電子制御ユニット(ECU)で、
インジェクタ７を介して噴射量を制御するとともに、前
記高圧配管２の上流側に設けた第１電磁遮断弁１３を開
閉制御することができる。 Incidentally, in this electronic control unit (ECU) ,
To together by controlling the injection amount through the injector 7, the first solenoid shut-off valve 1 3 provided on the upstream side of the high-pressure pipe 2 opens <br/> can be closed control.
【００１９】それでは、タンクガス圧ＰF0とタンクガス
温度ＴF0とガス性状ＦMによる残燃料表示の算定要領に
ついて述べる。Next, a description will be given of a method of calculating the remaining fuel display based on the tank gas pressure PF0, the tank gas temperature TF0, and the gas property FM.
【００２０】図１に示すように、圧力センサ１０と温度
センサ１１と性状センサ１５によってタンクガス圧ＰF0
とタンクガス温度ＴF0とガス性状ＦMを読み込むと、ＰF
0／ＴF0から理想状態の気体の重量ＭLOを求める。As shown in FIG. 1, a tank gas pressure PF0 is detected by a pressure sensor 10, a temperature sensor 11, and a property sensor 15.
And the tank gas temperature TF0 and gas property FM, PF
The weight MLO of the gas in the ideal state is obtained from 0 / TF0.
【００２１】また、同時に（Ｂ）図に示すようなＣFマ
ップからＰF0、ＴF0に応じた実在気体変換係数ＣFを求
める。At the same time, a real gas conversion coefficient CF corresponding to PF0 and TF0 is obtained from a CF map as shown in FIG.
【００２２】次に、ガス性状ＦMに応じて実在気体変換
係数ＣFを補正してＣFCを求め、前記理想状態の気体の
重量ＭLOに補正後の実在気体変換係数ＣFCを掛合わせれ
ば、実在気体の重量ＭLが求められる。Next, the real gas conversion coefficient CF is corrected according to the gas property FM to obtain CFC, and the weight MLO of the ideal gas is multiplied by the corrected real gas conversion coefficient CFC to obtain the real gas conversion coefficient CFC. The weight ML is determined.
【００２３】一方、予め、燃料満タン時の実在気体の重
量ＭREFは当初から求められており、前記重量ＭLと満タ
ン時の重量ＭREFとの比率ＦLVL＝ＭL／ＭREFを求めて、
ある一定間隔で出力して燃料計１２に表示する。 On the other hand, the weight MREF of the actual gas when the fuel is full is previously determined from the beginning, and the ratio FLVL = ML / MREF between the weight ML and the weight MREF when the fuel is full is calculated as follows:
That displays the fuel gauge 12 outputs at a certain interval.
【００２４】そして、かかる方法で処理することで、残
燃料を正確に表示することが出来る。[0024] By processing in this manner, the remaining fuel can be accurately displayed.
【００２５】そして、残燃料の値ＦLVLが一定値LMT以下
になれば、Ｎ側に進んで残燃料警報灯を点灯させ、燃料
の残りが少ないことを運転者に認識させる。残燃料の値
ＦLVLが一定値LMTを超えていれば残燃料警報灯は消えた
ままとする。 [0025] Then, lever value of remaining fuel FLVL is a below a predetermined value LMT, turns on the residual fuel warning light proceeds to the N side, the fuel
To let the driver know that there is little left over. Remaining fuel value
When FLVL exceeds a certain value LMT, the remaining fuel warning light goes off.
Leave it alone.
【００２６】因みに、前記タンクガス圧ＰF0がある値以
下になった時には、何等かの異常が発生するか、或いは
残燃料が少なくなった時であり、前記電子制御ユニット
(ECU)によってインジェクタを介して燃料噴射弁を遮断
するようにしている。By the way, when the tank gas pressure PF0 falls below a certain value, it means that some abnormality occurs or the remaining fuel is low, and the electronic control unit
(ECU) shuts off the fuel injection valve via the injector.
【００２７】これは、異常事態に対処するとともに、エ
ンジンから生ガスを排出させないためである。This is to cope with an abnormal situation and not to discharge the raw gas from the engine.
【００２８】[0028]
【発明の効果】以上のように本発明は、タンク近傍のガ
ス圧力とガス温度で理想状態の気体の重量を求めた後、
これを実在気体の重量に変換するようにしたため、従来
のように圧力条件のみならず、温度条件も加味して正確
に残燃料を把握することが出来る。As described above, according to the present invention, after the weight of the gas in the ideal state is determined by the gas pressure and the gas temperature near the tank,
Since this is converted into the weight of the actual gas, the remaining fuel can be accurately grasped by taking into account not only the pressure condition but also the temperature condition as in the related art.
【図１】残燃料の計測要領のフローチャート図FIG. 1 is a flowchart of a procedure for measuring remaining fuel.
【図２】燃料供給系統の模式図FIG. 2 is a schematic diagram of a fuel supply system.
【図３】燃料供給系統の車体配置の概要図FIG. 3 is a schematic diagram of a vehicle arrangement of a fuel supply system.
１…タンク、１２…燃料計、ＰF0…タンクガス圧、ＴF0
…タンクガス温度、ＭLO…理想状態の気体の重量、ＭL
…実在気体の重量。 1 ... tank , 12 ... fuel gauge , PF0 ... tank gas pressure , TF0
… Tank gas temperature , MLO … Ideal gas weight , ML
... the weight of the actual gas .
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石橋 建一郎 埼玉県和光市中央１丁目４番１号 株式 会社 本田技術研究所内 (72)発明者 中村 勝則 埼玉県和光市中央１丁目４番１号 株式 会社 本田技術研究所内 (58)調査した分野(Int.Cl.7，ＤＢ名) F02B 77/08 F02M 21/02 G01L 11/00 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichiro Ishibashi 1-4-1 Chuo, Wako-shi, Saitama Prefecture Incorporated Honda R & D Co., Ltd. (72) Katsunori Nakamura 1-4-1 Chuo, Wako-shi, Saitama Stock Company Honda R & D Co., Ltd. (58) Field surveyed (Int. Cl. 7 , DB name) F02B 77/08 F02M 21/02 G01L 11/00
Claims (1)
する残燃料表示装置において、前記燃料タンクの近傍の
ガス圧力とガス温度に基づいて理想状態の気体の重量を
求め、この理想状態の気体の重量を実在気体の重量に変
換し残量を表示することを特徴とするガス燃料車両の残
燃料表示装置。1. A remaining fuel display device for displaying a remaining amount of a fuel tank of a gas fueled vehicle, wherein an ideal gas weight is obtained based on a gas pressure and a gas temperature in the vicinity of the fuel tank. A remaining fuel display device for a gas-fueled vehicle, which converts the weight of a gas into the weight of a real gas and displays the remaining amount.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35188893A JP3164336B2 (en) | 1993-12-28 | 1993-12-28 | Gas fuel vehicle residual fuel display |
| DE69432323T DE69432323T2 (en) | 1993-12-28 | 1994-12-28 | Gas supply mechanism and device for determining and displaying the amount of gas for a gas engine |
| DE69423594T DE69423594T2 (en) | 1993-12-28 | 1994-12-28 | Gas supply mechanism for gas internal combustion engine |
| US08/365,442 US5611316A (en) | 1993-12-28 | 1994-12-28 | Gas fuel supply mechanism for gas combustion engine |
| EP94120842A EP0661428B1 (en) | 1993-12-28 | 1994-12-28 | Gas fuel supply mechanism for gas combustion engine |
| EP99112594A EP0942161B1 (en) | 1993-12-28 | 1994-12-28 | Gas fuel supply mechanism and amount of gas fuel determining and indicating means for gas combustion engine |
| AU81841/94A AU695675B2 (en) | 1993-12-28 | 1994-12-29 | Gas fuel supply mechanism for gas combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35188893A JP3164336B2 (en) | 1993-12-28 | 1993-12-28 | Gas fuel vehicle residual fuel display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07189731A JPH07189731A (en) | 1995-07-28 |
| JP3164336B2 true JP3164336B2 (en) | 2001-05-08 |
Family
ID=18420304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35188893A Expired - Fee Related JP3164336B2 (en) | 1993-12-28 | 1993-12-28 | Gas fuel vehicle residual fuel display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3164336B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000274311A (en) | 1999-03-19 | 2000-10-03 | Honda Motor Co Ltd | Gas fuel feeding system for vehicle |
| JP2000282956A (en) | 1999-03-29 | 2000-10-10 | Honda Motor Co Ltd | Gas fuel supply system for vehicle |
| JP3949348B2 (en) | 2000-04-20 | 2007-07-25 | 本田技研工業株式会社 | Gas fuel supply device |
| KR100475675B1 (en) * | 2002-04-12 | 2005-03-10 | 씨멘스 오토모티브 주식회사 | Method for calculating fuel tank pressure for lpg injection apparatus |
| JP2016098899A (en) * | 2014-11-20 | 2016-05-30 | いすゞ自動車株式会社 | Fuel gauge for compression natural gas automobile |
| FR3045775B1 (en) | 2015-12-18 | 2018-07-06 | Engie | METHOD AND SYSTEM FOR CALCULATING IN REAL-TIME THE PERIOD OF AUTONOMY OF AN UN-REFRIGERATED TANK CONTAINING LNG |
-
1993
- 1993-12-28 JP JP35188893A patent/JP3164336B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07189731A (en) | 1995-07-28 |
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