JP3175177U

JP3175177U - Fuel consumption measuring device and fuel consumption indicator used in the measuring device

Info

Publication number: JP3175177U
Application number: JP2012000454U
Authority: JP
Inventors: 耕三淵野
Original assignee: FUCHINO CO Ltd
Current assignee: FUCHINO CO Ltd
Priority date: 2012-01-31
Filing date: 2012-01-31
Publication date: 2012-04-26
Anticipated expiration: 2022-01-31

Abstract

【課題】原動機が微量の燃料を消費する状態でも燃料消費量が高精度で測定される燃料消費量測定装置を提供する。
【解決手段】燃料が燃料供給ラインから電磁弁１１を経て燃料タンク１４に供給され、貯蔵される。燃料タンク１４に燃料が供給されない状態（電磁弁１１が燃料伝送管１２側に切り替えられている）、かつ、燃料タンク１４から燃料が原動機に供給されている状態（電磁弁１３が燃料タンク１４側に切り替えられている）で、電磁平衡式重量検出器１５により、燃料タンク１４の重量が計測される。温度検出器１６により、燃料タンク１４から原動機に供給されている燃料の温度が検出される。燃料消費指示計１７では、燃料タンク１４の重量値ｍ、燃料の温度値ｔ、及び燃料の温度値ｔに対応した比重に基づいて、燃料タンク１４から原動機に供給される燃料の単位時間当たりの流量が演算される。
【選択図】図１A fuel consumption measuring device capable of measuring a fuel consumption with high accuracy even when a prime mover consumes a small amount of fuel.
Fuel is supplied from a fuel supply line to a fuel tank 14 via an electromagnetic valve 11 and stored. A state in which no fuel is supplied to the fuel tank 14 (the electromagnetic valve 11 is switched to the fuel transmission pipe 12 side), and a state in which fuel is being supplied from the fuel tank 14 to the prime mover (the electromagnetic valve 13 is on the fuel tank 14 side) The weight of the fuel tank 14 is measured by the electromagnetic balance type weight detector 15. The temperature detector 16 detects the temperature of the fuel supplied from the fuel tank 14 to the prime mover. The fuel consumption indicator 17 is based on the weight value m of the fuel tank 14, the fuel temperature value t, and the specific gravity corresponding to the fuel temperature value t per unit time of the fuel supplied from the fuel tank 14 to the prime mover. The flow rate is calculated.
[Selection] Figure 1

Description

この考案は、燃料消費量測定装置、該測定装置に用いられる燃料消費量測定方法及び燃料消費量測定プログラム、並びに燃料消費量指示計に係り、たとえばガソリンや軽油などを燃料とする原動機（エンジン）に対して、特に微量の燃料を消費する状態で燃料消費量を測定する場合に用いて好適な燃料消費量測定装置、該測定装置に用いられる燃料消費量測定方法及び燃料消費量測定プログラム、並びに燃料消費量指示計に関する。 The present invention relates to a fuel consumption measuring device, a fuel consumption measuring method and a fuel consumption measuring program used in the measuring device, and a fuel consumption indicator, for example, a prime mover (engine) using gasoline or light oil as fuel. On the other hand, a fuel consumption measuring device suitable for use in measuring fuel consumption particularly in a state where a very small amount of fuel is consumed, a fuel consumption measuring method and a fuel consumption measuring program used in the measuring device, and The fuel consumption indicator.

ガソリンや軽油などを燃料とする原動機（エンジン）の燃料消費量を測定する場合、流量検出器を有する燃料消費量測定装置が用いられる。 When measuring the fuel consumption of a prime mover (engine) using gasoline or light oil as a fuel, a fuel consumption measuring device having a flow rate detector is used.

この種の関連技術としては、たとえば、特許文献１に記載された燃料消費量測定装置がある。
この燃料消費量測定装置は、たとえば図３に示すように、燃料供給系１と、ストレーナ２と、流量検出器３と、デジタル表示計４と、キャブレタ５とから構成されている。
この燃料消費量測定装置では、燃料供給系統１は、図示しない燃料タンク及び燃料ポンプなどで構成され、同燃料供給系統１からストレーナ２を経て原動機のキャブレタ５に供給される燃料の流量が流量検出器３により検出され、瞬時流量や一定時間の積算流量がデジタル表示計４で演算及び表示される。 As this type of related technology, for example, there is a fuel consumption measuring device described in Patent Document 1.
For example, as shown in FIG. 3, the fuel consumption measuring device includes a fuel supply system 1, a strainer 2, a flow rate detector 3, a digital indicator 4, and a carburetor 5.
In this fuel consumption measuring device, the fuel supply system 1 is composed of a fuel tank and a fuel pump (not shown), and the flow rate of the fuel supplied from the fuel supply system 1 through the strainer 2 to the carburetor 5 of the prime mover is detected. The digital flow meter 4 calculates and displays the instantaneous flow rate and the integrated flow rate for a predetermined time.

流量検出器３では、図示しない流量検出部に放射状に配置された４個のピストンが、入口から出口へ流れる燃料によって往復運動を繰り返す。これらのピストンの動きは、クランクシャフトにより回転運動となってマグネットカップリングされた回転検出部に伝えられる。回転検出部のロータリエンコーダは、ピストンの移動容量に応じたパルス信号を発生し、デジタル表示計４により、瞬時流量及び積算流量が演算表示される。パルス信号の発生は、９０度の位相差をもつ２組の投・受光素子により行われ、回転方向を判別することにより、逆流及び脈流による影響を受けずに流量測定が行われる。なお、流量検出器３は、たとえば非特許文献１に記載された流量検出器に基づいて構成されている。 In the flow rate detector 3, four pistons arranged radially in a flow rate detection unit (not shown) repeat reciprocating motion with the fuel flowing from the inlet to the outlet. The movements of these pistons are transmitted to the rotation detection unit that is magnet-coupled as a rotational motion by the crankshaft. The rotary encoder of the rotation detection unit generates a pulse signal corresponding to the displacement of the piston, and the digital display 4 calculates and displays the instantaneous flow rate and the integrated flow rate. Generation of the pulse signal is performed by two sets of light projecting / receiving elements having a phase difference of 90 degrees, and the flow rate is measured without being influenced by the reverse flow and the pulsating flow by determining the rotation direction. The flow rate detector 3 is configured based on the flow rate detector described in Non-Patent Document 1, for example.

特開平７−１０３７９８号公報JP-A-7-103798

小野測器ＷＥＢサイト、ホームページ「流量計関連計測器」Ono Sokki WEB site, homepage "flow meter related measuring instrument"

新光電子ＷＥＢサイト、ホームページ「電磁力平衡方式センサ」Shinko Electronics WEB site, homepage "Electromagnetic force balanced sensor"

しかしながら、上記関連技術では、次のような課題があった。
すなわち、図３の燃料消費量測定装置では、流量検出器３に流れる燃料の容積に比例して発生するパルス数が計測されるが、原動機による燃料の消費量が微量のときには、ピストンが燃料の容積に比例して円滑に作動しないことがある。このため、パルス信号が正確に発生せず、燃料消費量の計測精度が低くなるという課題がある。 However, the related technology has the following problems.
That is, in the fuel consumption measuring device of FIG. 3, the number of pulses generated in proportion to the volume of the fuel flowing through the flow rate detector 3 is measured, but when the amount of fuel consumed by the prime mover is very small, the piston It may not operate smoothly in proportion to the volume. For this reason, there is a problem that the pulse signal is not generated accurately and the measurement accuracy of the fuel consumption is lowered.

この考案は、上述の事情に鑑みてなされたもので、原動機が微量の燃料を消費する状態でも、燃料消費量が高精度で測定される燃料消費量測定装置、該測定装置に用いられる燃料消費量測定方法及び燃料消費量測定プログラム、並びに燃料消費量指示計を提供することを目的としている。 The present invention has been made in view of the above-described circumstances. A fuel consumption measuring device that measures fuel consumption with high accuracy even when a prime mover consumes a small amount of fuel, and a fuel consumption used in the measuring device. An object of the present invention is to provide an amount measurement method, a fuel consumption measurement program, and a fuel consumption indicator.

上記課題を解決するために、この考案の第１の構成は、燃料供給手段と原動機との間に設置されて前記原動機による燃料の消費量を測定する燃料消費量測定装置に係り、前記燃料供給手段から供給される前記燃料を貯蔵するための燃料タンクと、該燃料タンクに前記燃料が供給されない状態、かつ、該燃料タンクから前記燃料が前記原動機に供給されている状態で前記燃料タンクの重量を計測する重量計測手段と、前記燃料タンクから前記原動機に供給されている前記燃料の温度を検出する燃料温度計測手段と、前記重量計測手段により計測される前記燃料タンクの重量値、前記燃料温度計測手段により計測される前記燃料の温度値、及び前記燃料の前記温度値に対応した比重に基づいて、前記燃料タンクから前記原動機に供給される前記燃料の流量を演算する燃料消費量演算手段とを有し、前記重量計測手段は、磁石とコイルとを組み合わせることにより発生した電磁力と前記燃料タンクの重量との平衡をとり、該平衡がとれた状態で前記コイルに流れる電流値を測定して該電流値を前記燃料タンクの前記重量値に変換する電磁平衡式重量検出器から構成されていることを特徴としている。 In order to solve the above-mentioned problems, a first configuration of the present invention relates to a fuel consumption measuring device that is installed between a fuel supply means and a prime mover and measures the fuel consumption by the prime mover, and the fuel supply A fuel tank for storing the fuel supplied from the means, a weight of the fuel tank in a state where the fuel is not supplied to the fuel tank, and a state where the fuel is supplied from the fuel tank to the prime mover A weight measuring means for measuring the fuel, a fuel temperature measuring means for detecting the temperature of the fuel supplied from the fuel tank to the prime mover, a weight value of the fuel tank measured by the weight measuring means, and the fuel temperature The fuel supplied from the fuel tank to the prime mover based on the temperature value of the fuel measured by the measuring means and the specific gravity corresponding to the temperature value of the fuel. A fuel consumption calculating means for calculating the flow rate of the fuel, wherein the weight measuring means balances the electromagnetic force generated by combining a magnet and a coil with the weight of the fuel tank, and the balance is achieved. It is characterized by comprising an electromagnetic balance type weight detector that measures a current value flowing through the coil in a state and converts the current value into the weight value of the fuel tank.

この考案の第２の構成は、燃料供給手段と原動機との間に設置されて前記原動機による燃料の消費量を測定する燃料消費量測定装置に用いられ、燃料消費量測定プログラムがコンピュータに前記燃料の消費量を測定させる燃料消費量測定方法に係り、前記燃料消費量測定装置に、前記燃料供給手段から供給される前記燃料を貯蔵するための燃料タンクと、該燃料タンクに前記燃料が供給されない状態、かつ、該燃料タンクから前記燃料が前記原動機に供給されている状態で前記燃料タンクの重量を計測する重量計測手段と、前記燃料タンクから前記原動機に供給されている前記燃料の温度を検出する燃料温度計測手段とを設け、前記重量計測手段を、磁石とコイルとを組み合わせることにより発生した電磁力と前記燃料タンクの重量との平衡をとり、該平衡がとれた状態で前記コイルに流れる電流値を測定して該電流値を前記燃料タンクの重量値に変換する電磁平衡式重量検出器から構成しておき、前記コンピュータに、前記重量計測手段により計測される前記燃料タンクの前記重量値、前記燃料温度計測手段により計測される前記燃料の温度値、及び前記燃料の前記温度値に対応した比重に基づいて、前記燃料タンクから前記原動機に供給される前記燃料の流量を演算する燃料消費量演算処理を行わせることを特徴としている。 The second configuration of the present invention is used in a fuel consumption measuring device that is installed between a fuel supply means and a prime mover and measures the amount of fuel consumed by the prime mover, and a fuel consumption measurement program is stored in the computer. A fuel tank for storing the fuel supplied from the fuel supply means in the fuel consumption measuring device, and the fuel is not supplied to the fuel tank. A weight measuring means for measuring the weight of the fuel tank in a state where the fuel is being supplied from the fuel tank to the prime mover, and detecting the temperature of the fuel being supplied from the fuel tank to the prime mover A fuel temperature measuring means that performs an equilibrium between an electromagnetic force generated by combining a magnet and a coil and the weight of the fuel tank. And measuring the current value flowing through the coil in the balanced state and converting the current value into the weight value of the fuel tank, and comprising the electromagnetic balance type weight detector. Based on the weight value of the fuel tank measured by the measuring means, the temperature value of the fuel measured by the fuel temperature measuring means, and the specific gravity corresponding to the temperature value of the fuel, the prime mover from the fuel tank A fuel consumption amount calculation process for calculating the flow rate of the fuel supplied to is performed.

この考案の構成によれば、原動機が微量の燃料を消費する状態でも、燃料消費量が高精度で測定される燃料消費量測定装置を提供することができる。 According to the configuration of the present invention, it is possible to provide a fuel consumption measuring device that can measure the fuel consumption with high accuracy even when the prime mover consumes a small amount of fuel.

この考案の一実施形態である燃料消費量測定装置の要部の構成を示す模式図である。It is a schematic diagram which shows the structure of the principal part of the fuel consumption measuring device which is one Embodiment of this device. 図１中の電磁平衡式重量検出器１５の要部の電気的構成例を示す模式図である。It is a schematic diagram which shows the electrical structural example of the principal part of the electromagnetic balance type weight detector 15 in FIG. 関連技術に係る燃料消費量測定装置の構成図である。It is a block diagram of the fuel consumption measuring device which concerns on related technology.

燃料伝送管と、上記燃料供給手段から供給される上記燃料を上記燃料タンク又は上記燃料伝送管に送出する第１の燃料供給切替え手段（電磁弁）と、上記燃料タンクから上記燃料を上記原動機へ送出するか、又は上記第１の燃料供給切替え手段から上記燃料伝送管を経て送出される上記燃料を上記原動機に送出する第２の燃料供給切替え手段（電磁弁）とを有する燃料消費量測定装置を実現する。 A fuel transmission pipe; first fuel supply switching means (electromagnetic valve) for sending the fuel supplied from the fuel supply means to the fuel tank or the fuel transmission pipe; and the fuel from the fuel tank to the prime mover. A fuel consumption measuring device having second fuel supply switching means (solenoid valve) for sending the fuel sent from the first fuel supply switching means via the fuel transmission pipe to the prime mover Is realized.

Embodiment

図１は、この考案の一実施形態である燃料消費量測定装置の要部の構成を示す模式図である。
この形態の燃料消費量測定装置は、同図に示すように、燃料供給ライン（燃料供給手段）と原動機との間に設置され、電磁弁１１と、燃料伝送管１２と、電磁弁１３と、燃料タンク１４と、電磁平衡式重量検出器１５と、温度検出器１６と、燃料消費指示計１７とから構成されている。電磁弁１１は、たとえば防爆構造の四方弁で構成され、図示しない燃料タンクや燃料ポンプを有する燃料供給ラインから供給される燃料（たとえば、ガソリン）を燃料タンク１４へ送出するか又は燃料伝送管１２に送出する。燃料伝送管１２は、電磁弁１１と電磁弁１３との間に設けられている。燃料タンク１４は、燃料供給ラインから電磁弁１１を経て供給される燃料を貯蔵するためのものである。 FIG. 1 is a schematic diagram showing a configuration of a main part of a fuel consumption measuring device according to an embodiment of the present invention.
As shown in the figure, the fuel consumption measuring device of this embodiment is installed between a fuel supply line (fuel supply means) and a prime mover, and includes an electromagnetic valve 11, a fuel transmission pipe 12, an electromagnetic valve 13, The fuel tank 14, the electromagnetic balance type weight detector 15, the temperature detector 16, and the fuel consumption indicator 17 are configured. The solenoid valve 11 is constituted by an explosion-proof four-way valve, for example, and sends fuel (for example, gasoline) supplied from a fuel supply line having a fuel tank and a fuel pump (not shown) to the fuel tank 14 or a fuel transmission pipe 12. To send. The fuel transmission pipe 12 is provided between the electromagnetic valve 11 and the electromagnetic valve 13. The fuel tank 14 is for storing fuel supplied from the fuel supply line via the electromagnetic valve 11.

電磁弁１３は、たとえば防爆構造の三方弁で構成され、燃料タンク１４から燃料を原動機へ送出するか、又は電磁弁１１から燃料伝送管１２を経て送出される燃料を同原動機に送出する。なお、燃料タンク１４及び電磁弁１３は、燃料タンク１４の内部の燃料が同燃料の重量によって電磁弁１３を経て原動機へ送出されるように、原動機よりも高い位置に配置されている。電磁平衡式重量検出器１５は、図示しない磁石とコイルとを組み合わせることにより発生した電磁力と燃料タンク１４の重量との平衡をとり、平衡がとれた状態で上記コイルに流れる電流値を測定して同電流値を燃料タンク１４の重量値ｍに変換する。特に、この実施形態では、電磁平衡式重量検出器１５は、燃料タンク１４に燃料が供給されない状態、かつ、同燃料タンク１４から燃料が原動機に供給されている状態で燃料を含む燃料タンク１４の重量を計測する。温度検出器１６は、燃料タンク１４から原動機に供給されている燃料の温度を検出する。燃料消費指示計１７は、燃料消費量測定プログラムに基づいて機能するコンピュータで構成され、電磁平衡式重量検出器１５により計測される燃料タンク１４の重量値ｍ、温度検出器１６により計測される燃料の温度値ｔ、及び燃料の温度値ｔに対応した比重に基づいて、燃料タンク１４から原動機に供給される燃料の単位時間当たりの流量を演算して表示する。 The solenoid valve 13 is constituted by, for example, an explosion-proof three-way valve, and sends fuel from the fuel tank 14 to the prime mover, or sends fuel sent from the solenoid valve 11 via the fuel transmission pipe 12 to the prime mover. The fuel tank 14 and the electromagnetic valve 13 are arranged at a higher position than the prime mover so that the fuel inside the fuel tank 14 is sent to the prime mover via the electromagnetic valve 13 by the weight of the fuel. The electromagnetic balance type weight detector 15 balances the electromagnetic force generated by combining a magnet (not shown) and a coil with the weight of the fuel tank 14, and measures the current value flowing through the coil in a balanced state. The current value is converted into the weight value m of the fuel tank 14. In particular, in this embodiment, the electromagnetic balance type weight detector 15 is provided in the fuel tank 14 containing fuel in a state where no fuel is supplied to the fuel tank 14 and in a state where fuel is supplied from the fuel tank 14 to the prime mover. Measure the weight. The temperature detector 16 detects the temperature of the fuel supplied from the fuel tank 14 to the prime mover. The fuel consumption indicator 17 is composed of a computer that functions based on a fuel consumption measurement program, and the weight value m of the fuel tank 14 measured by the electromagnetic balance type weight detector 15 and the fuel measured by the temperature detector 16. The flow rate per unit time of the fuel supplied from the fuel tank 14 to the prime mover is calculated and displayed based on the temperature value t and the specific gravity corresponding to the fuel temperature value t.

図２は、図１中の電磁平衡式重量検出器１５の要部の電気的構成例を示す模式図である。
この電磁平衡式重量検出器１５は、図２に示すように、計量台２１と、零検出器２２と、サーボ増幅器２３と、コイル２４と、磁石２５と、抵抗２６と、信号増幅器２７と、フィルタ２８と、Ａ／Ｄ（アナログ／デジタル）変換器２９と、数字表示部３０とから構成されている。
この電磁平衡式重量検出器１５では、計量台２１に図１中の燃料タンク１４が載置された状態でサーボ増幅器２３からコイル２４に電流が供給される。そして、磁石２５とコイル２４との組み合わせにより発生した電磁力と燃料タンク１４の重量との平衡が零検出器２２により検出されたときの同コイル２４に流れる電流が抵抗２６により電圧Ｅに変換される。電圧Ｅは、信号増幅器２７により所定の増幅率で増幅され、フィルタ２８でノイズ成分が除去されて燃料タンク１４の重量値ｍが出力される。また、燃料タンク１４の重量値ｍは、Ａ／Ｄ変換器２９によりアナログからデジタルに変換されると共に同燃料タンク１４の空状態での重量が差し引かれ（風袋引き）、数字表示部３０に表示される。なお、この電磁平衡式重量検出器１５は、非特許文献２に記載された電磁力平衡方式センサに基づいて構成されている。 FIG. 2 is a schematic diagram showing an example of the electrical configuration of the main part of the electromagnetic balance type weight detector 15 in FIG.
As shown in FIG. 2, the electromagnetic balance type weight detector 15 includes a weighing table 21, a zero detector 22, a servo amplifier 23, a coil 24, a magnet 25, a resistor 26, a signal amplifier 27, The filter 28, an A / D (analog / digital) converter 29, and a number display unit 30 are included.
In the electromagnetic balance type weight detector 15, a current is supplied from the servo amplifier 23 to the coil 24 in a state where the fuel tank 14 in FIG. The current flowing in the coil 24 when the balance between the electromagnetic force generated by the combination of the magnet 25 and the coil 24 and the weight of the fuel tank 14 is detected by the zero detector 22 is converted into the voltage E by the resistor 26. The The voltage E is amplified by the signal amplifier 27 at a predetermined amplification factor, the noise component is removed by the filter 28, and the weight value m of the fuel tank 14 is output. The weight value m of the fuel tank 14 is converted from analog to digital by the A / D converter 29 and the weight of the fuel tank 14 in an empty state is subtracted (tare), and displayed on the number display unit 30. Is done. The electromagnetic balance type weight detector 15 is configured based on an electromagnetic force balance type sensor described in Non-Patent Document 2.

次に、この形態の燃料消費量測定装置に用いられる燃料消費量測定方法の処理内容について説明する。
この燃料消費量測定装置では、燃料が燃料供給ラインから電磁弁１１を経て燃料タンク１４に供給され、貯蔵される。そして、燃料タンク１４に燃料が供給されない状態（すなわち、電磁弁１１が燃料伝送管１２側に切り替えられている状態）、かつ、同燃料タンク１４から燃料が原動機に供給されている状態（すなわち、電磁弁１３が燃料タンク１４側に切り替えられている状態）で、電磁平衡式重量検出器１５により、燃料を含む燃料タンク１４の重量が計測される。また、温度検出器１６により、燃料タンク１４から原動機に供給されている燃料の温度が検出される。燃料消費指示計１７では、電磁平衡式重量検出器１５により計測される燃料タンク１４の重量値ｍ、温度検出器１６により計測される燃料の温度値ｔ、及び燃料の温度値ｔに対応した比重に基づいて、燃料タンク１４から原動機に供給される燃料の単位時間当たりの流量が演算される（燃料消費量演算処理）。 Next, the processing content of the fuel consumption measuring method used in the fuel consumption measuring device of this embodiment will be described.
In this fuel consumption measuring device, fuel is supplied from the fuel supply line to the fuel tank 14 via the electromagnetic valve 11 and stored. The fuel tank 14 is not supplied with fuel (that is, the electromagnetic valve 11 is switched to the fuel transmission pipe 12 side), and the fuel is supplied from the fuel tank 14 to the prime mover (that is, In the state where the solenoid valve 13 is switched to the fuel tank 14 side), the weight of the fuel tank 14 containing fuel is measured by the electromagnetic balance type weight detector 15. Further, the temperature detector 16 detects the temperature of the fuel supplied from the fuel tank 14 to the prime mover. In the fuel consumption indicator 17, the weight value m of the fuel tank 14 measured by the electromagnetic balance type weight detector 15, the fuel temperature value t measured by the temperature detector 16, and the specific gravity corresponding to the fuel temperature value t. Based on the above, the flow rate per unit time of the fuel supplied from the fuel tank 14 to the prime mover is calculated (fuel consumption calculation processing).

この場合、燃料消費指示計１７では、燃料（ガソリン）の１５℃での体積Ｖ15に対する温度値ｔでの体積Ｖt の比が次式（１）により計算される。
Ｖt ／Ｖ15＝［１−０．００１２６（ｔ−１５）］・・・（１）
但し、
Ｖt ；ｔ℃での体積
Ｖ15；１５℃での体積
ｔ；温度値
また、ガソリンの１５℃での比重を０．７３とすると、ｔ℃での比重ｐt が０．７３／（Ｖt ／Ｖ15）となる。電磁平衡式重量検出器１５により計測される燃料タンク１４の重量値ｍは、燃料消費指示計１７に逐次入力され、たとえば時刻ｎ１での重量値ｍ1 と時刻ｎ２での重量値ｍ2 との差分を比重ｐt で除すことにより、次式（２）で表される流量ｆが算出される。
流量ｆ＝（ｍ2 −ｍ1 ）／ｐt ・・・（２）
また、この流量ｆを時刻ｎ１から時刻ｎ２に至る時間で除すことにより、単位時間当たりの流量が演算される。 In this case, the fuel consumption indicator 17 calculates the ratio of the volume Vt at the temperature value t to the volume V15 at 15 ° C. of the fuel (gasoline) by the following equation (1).
Vt / V15 = [1-0.00126 (t-15)] (1)
However,
Vt; Volume at t ° C
V15: Volume at 15 ° C
t: Temperature value If the specific gravity of gasoline at 15 ° C is 0.73, the specific gravity pt at t ° C is 0.73 / (Vt / V15). The weight value m of the fuel tank 14 measured by the electromagnetic balance type weight detector 15 is sequentially input to the fuel consumption indicator 17, and for example, the difference between the weight value m1 at time n1 and the weight value m2 at time n2 is calculated. By dividing by the specific gravity pt, the flow rate f represented by the following equation (2) is calculated.
Flow rate f = (m2-m1) / pt (2)
Further, the flow rate per unit time is calculated by dividing the flow rate f by the time from the time n1 to the time n2.

以上のように、この実施形態では、燃料消費指示計１７により、電磁平衡式重量検出器１５で計測される燃料タンク１４の重量値ｍを用いて流量ｆが算出されるので、原動機が微量の燃料を消費する状態でも、燃料消費量が高精度で測定される。 As described above, in this embodiment, the flow rate f is calculated by the fuel consumption indicator 17 using the weight value m of the fuel tank 14 measured by the electromagnetic balance type weight detector 15, so that the prime mover has a very small amount. Even when the fuel is consumed, the fuel consumption is measured with high accuracy.

以上、この考案の実施形態を図面により詳述してきたが、具体的な構成は同実施形態に限られるものではなく、この考案の要旨を逸脱しない範囲の設計の変更などがあっても、この考案に含まれる。
たとえば、上記実施形態では、燃料タンク１４及び電磁弁１３は、燃料タンク１４の内部の燃料が同燃料の重量によって電磁弁１３を経て原動機へ送出されるように、原動機よりも高い位置に配置されているが、燃料タンク１４及び電磁弁１３が原動機よりも低い位置に配置されている場合では、燃料タンク１４と電磁弁１３との間にポンプを付加する構成としても良い。また、原動機の燃料として軽油を用いる場合では、上記式（１）に代えて、次式（３）が用いられる。
Ｖt ／Ｖ15＝［１−０．０００８７３（ｔ−１５）］・・・（３） The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the idea.
For example, in the above embodiment, the fuel tank 14 and the solenoid valve 13 are arranged at a position higher than the prime mover so that the fuel inside the fuel tank 14 is sent to the prime mover via the solenoid valve 13 by the weight of the fuel. However, in the case where the fuel tank 14 and the electromagnetic valve 13 are disposed at a position lower than the prime mover, a configuration may be adopted in which a pump is added between the fuel tank 14 and the electromagnetic valve 13. Moreover, when using light oil as a fuel of a motor | power_engine, it replaces with said Formula (1) and following Formula (3) is used.
Vt / V15 = [1-0.000873 (t-15)] (3)

この考案は、たとえばガソリンや軽油などを燃料とする原動機の燃料消費量を測定する場合全般に適用でき、特に微量の燃料を消費する状態で燃料消費量を測定する場合に用いて有効である。 The present invention can be applied in general when measuring the fuel consumption of a prime mover that uses gasoline, light oil, or the like as fuel, and is particularly effective when measuring the fuel consumption when a small amount of fuel is consumed.

１１電磁弁（第１の燃料供給切替え手段）
１２燃料伝送管
１３電磁弁（第２の燃料供給切替え手段）
１４燃料タンク
１５電磁平衡式重量検出器（重量計測手段）
１６温度検出器（燃料温度計測手段）
１７燃料消費指示計（燃料消費量演算手段） 11 Solenoid valve (first fuel supply switching means)
12 Fuel transmission pipe 13 Solenoid valve (second fuel supply switching means)
14 Fuel tank 15 Electromagnetic balance type weight detector (weight measuring means)
16 Temperature detector (fuel temperature measuring means)
17 Fuel consumption indicator (fuel consumption calculation means)

この考案は、燃料消費量測定装置及び該測定装置に用いられる燃料消費量指示計に係り、たとえばガソリンや軽油などを燃料とする原動機（エンジン）に対して、特に微量の燃料を消費する状態で燃料消費量を測定する場合に用いて好適な燃料消費量測定装置及び該測定装置に用いられる燃料消費量指示計に関する。 The present invention relates to a fuel consumption measuring device and a fuel consumption indicator used in the measuring device . For example, in a state where a very small amount of fuel is consumed for a prime mover (engine) which uses gasoline or light oil as fuel. The present invention relates to a fuel consumption measuring device suitable for use in measuring fuel consumption and a fuel consumption indicator used in the measuring device .

この考案は、上述の事情に鑑みてなされたもので、原動機が微量の燃料を消費する状態でも、燃料消費量が高精度で測定される燃料消費量測定装置及び該測定装置に用いられる燃料消費量指示計を提供することを目的としている。 The present invention has been made in view of the above-described circumstances. A fuel consumption measuring device that measures fuel consumption with high accuracy even when the prime mover consumes a small amount of fuel, and a fuel consumption used in the measuring device. The purpose is to provide a quantity indicator .

Claims

A fuel consumption measuring device installed between a fuel supply means and a prime mover to measure fuel consumption by the prime mover,
A fuel tank for storing the fuel supplied from the fuel supply means;
A weight measuring means for measuring the weight of the fuel tank in a state where the fuel is not supplied to the fuel tank, and in a state where the fuel is supplied from the fuel tank to the prime mover;
Fuel temperature measuring means for detecting the temperature of the fuel supplied from the fuel tank to the prime mover;
Based on the weight value of the fuel tank measured by the weight measuring means, the temperature value of the fuel measured by the fuel temperature measuring means, and the specific gravity corresponding to the temperature value of the fuel, from the fuel tank Fuel consumption calculation means for calculating the flow rate of the fuel supplied to the prime mover,
The weight measuring means includes
The electromagnetic force generated by combining the magnet and the coil and the weight of the fuel tank are balanced, the current value flowing through the coil is measured in the balanced state, and the current value of the fuel tank is measured. A fuel consumption measuring device comprising an electromagnetic balance type weight detector for converting to a weight value.

A fuel transmission tube;
First fuel supply switching means for sending the fuel supplied from the fuel supply means to the fuel tank or the fuel transmission pipe;
A second fuel supply switching means for sending the fuel from the fuel tank to the prime mover or sending the fuel sent from the first fuel supply switching means via the fuel transmission pipe to the prime mover; The fuel consumption measuring device according to claim 1, comprising:

A fuel consumption amount installed between a fuel supply means and a prime mover and used in a fuel consumption measurement device for measuring a fuel consumption amount by the prime mover, and a fuel consumption measurement program causing a computer to measure the fuel consumption amount A measuring method,
In the fuel consumption measuring device,
A fuel tank for storing the fuel supplied from the fuel supply means;
A weight measuring means for measuring the weight of the fuel tank in a state where the fuel is not supplied to the fuel tank, and in a state where the fuel is supplied from the fuel tank to the prime mover;
Fuel temperature measuring means for detecting the temperature of the fuel supplied from the fuel tank to the prime mover; and
The weight measuring means balances the electromagnetic force generated by combining a magnet and a coil with the weight of the fuel tank, and measures the current value flowing through the coil in the balanced state. Is composed of an electromagnetic balance type weight detector that converts the weight value of the fuel tank,
In the computer,
Based on the weight value of the fuel tank measured by the weight measuring means, the temperature value of the fuel measured by the fuel temperature measuring means, and the specific gravity corresponding to the temperature value of the fuel, from the fuel tank A fuel consumption measuring method, comprising: performing a fuel consumption calculation process for calculating a flow rate of the fuel supplied to the prime mover.

A fuel consumption measuring program for causing a computer to function as the fuel consumption calculating means according to claim 1 or 2.

A fuel consumption indicator installed between a fuel supply means and a prime mover and used in a fuel consumption measurement device for measuring fuel consumption by the prime mover,
The fuel consumption measuring device comprises:
A fuel tank for storing the fuel supplied from the fuel supply means;
A weight measuring means for measuring the weight of the fuel tank in a state where the fuel is not supplied to the fuel tank, and in a state where the fuel is supplied from the fuel tank to the prime mover;
Fuel temperature measuring means for detecting the temperature of the fuel supplied from the fuel tank to the prime mover;
The fuel consumption indicator is
Based on the weight value of the fuel tank measured by the weight measuring means, the temperature value of the fuel measured by the fuel temperature measuring means, and the specific gravity corresponding to the temperature value of the fuel, from the fuel tank A fuel consumption indicator that calculates and indicates the flow rate of the fuel supplied to the prime mover.

The weight measuring means includes
The electromagnetic force generated by combining the magnet and the coil and the weight of the fuel tank are balanced, the current value flowing through the coil is measured in the balanced state, and the current value of the fuel tank is measured. 6. The fuel consumption indicator according to claim 5, comprising an electromagnetic balance type weight detector for converting to a weight value.