JPH06207845A - Method and device for measuring volume of piston combustion chamber - Google Patents
Method and device for measuring volume of piston combustion chamberInfo
- Publication number
- JPH06207845A JPH06207845A JP1780993A JP1780993A JPH06207845A JP H06207845 A JPH06207845 A JP H06207845A JP 1780993 A JP1780993 A JP 1780993A JP 1780993 A JP1780993 A JP 1780993A JP H06207845 A JPH06207845 A JP H06207845A
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- air
- piston combustion
- reference container
- volume
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ピストン燃焼室容積計
測方法、およびピストン燃焼室容積計測装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piston combustion chamber volume measuring method and a piston combustion chamber volume measuring device.
【０００２】[0002]
【従来の技術】従来、ピストン燃焼室の容量を計測する
には、一般に、計測対象であるピストン燃焼室に手作業
で液体を注入し、この注入した液体の容量を計測するこ
とにより燃焼室の容量を計測していた。2. Description of the Related Art Conventionally, in order to measure the volume of a piston combustion chamber, generally, a liquid is manually injected into the piston combustion chamber to be measured, and the volume of the injected liquid is measured to measure the volume of the combustion chamber. I was measuring capacity.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな液体を利用した従来の計測方法では、作業に熟練を
要し、したがって、作業者の熟練度によって測定精度が
左右されるとの問題があった。さらに、計測行程の自動
化も困難であり手作業によらなけらばならないため、測
定に時間がかかるものであった。However, in the conventional measuring method using such a liquid, there is a problem that the operation requires skill and therefore the measurement accuracy depends on the skill of the operator. It was Furthermore, it is difficult to automate the measurement process, and it has to be done manually, so that the measurement takes time.
【０００４】本発明は、このような従来の計測方法にお
ける問題点を解決すべくなされたもので、ピストン燃焼
室の容量を、前記従来の方法より格段に簡単に、然も精
度良く測定することができるピストン燃焼室容量計測方
法及び計測装置を提供することを目的とするものであ
る。The present invention has been made to solve the above problems in the conventional measuring method, and it is possible to measure the capacity of the piston combustion chamber much more easily and accurately than the conventional method. It is an object of the present invention to provide a piston combustion chamber capacity measuring method and a measuring apparatus capable of performing the above.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成すべく、
本願の第１の発明は、容量が既知の基準容器に対して一
定量の空気を封入すると共に、該空気封入時における基
準容器内の圧力を測定する工程と、測定対象物であるピ
ストン燃焼室内に一定量の空気を封入すると共に、該空
気封入時におけるピストン燃焼室内の圧力を測定する工
程とを含み、前記基準容器の容量をＸ、前記基準容器に
対する封入空気量をＹ1 、前記基準容器への空気封入時
の圧力をＰ1 、大気圧をＰ0 、ポリトロープ変化指数を
ｎとした場合に、数式 Ｐ0 ・（Ｘ＋Ｙ1 ）n ＝Ｐ1 ・Ｘn からポリトロープ変化指数ｎを求め、前記ピストン燃焼
室に対する封入空気量をＹ2 、前記ピストン燃焼室への
空気封入時の圧力をＰ2 とした場合に、前記求めたポリ
トロープ変化指数ｎと、前記ピストン燃焼室への空気封
入時の圧力Ｐ2 とから、前記ピストン燃焼室と前記基準
容器との容量差Ｚを、数式 Ｐ0 ・（Ｘ＋Ｙ2 ＋Ｚ）n ＝Ｐ2 ・（Ｘ＋Ｚ）n により求め、該容量差Ｚと前記基準容器の容量Ｘとの和
から前記ピストン燃焼室の容量を求めることを特徴とす
るピストン燃焼室容積計測方法に係るものである。[Means for Solving the Problems] To achieve the above object,
A first invention of the present application includes a step of enclosing a fixed amount of air in a reference container having a known capacity and measuring a pressure in the reference container at the time of enclosing the air, and a piston combustion chamber which is an object to be measured. To a predetermined amount of air and to measure the pressure in the piston combustion chamber at the time of the air injection, the capacity of the reference container is X, the amount of air enclosed in the reference container is Y 1 , and the reference container is Where P 1 is the pressure when air is filled into the chamber, P 0 is the atmospheric pressure, and n is the polytropic change index, the polytropic change index n is calculated from the formula P 0 · (X + Y 1 ) n = P 1 · X n When the amount of air filled in the piston combustion chamber is Y 2 and the pressure when air is filled in the piston combustion chamber is P 2 , the calculated polytropic change index n and the air filled in the piston combustion chamber the pressure P 2 Et al., The capacity difference Z between the piston combustion chamber and the reference chamber, determined by the equation P 0 · (X + Y 2 + Z) n = P 2 · (X + Z) n, the capacity X of the reference vessel and said capacitive difference Z The present invention relates to a piston combustion chamber volume measuring method, characterized in that the volume of the piston combustion chamber is obtained from the sum of
【０００６】また、本願の第２の発明は、容量が既知の
基準容器及び測定対象物であるピストン燃焼室内に一定
量の空気を封入する封入手段と、該封入手段により封入
された空気を前記基準容器内及び前記ピストン燃焼室内
に密閉する密閉手段と、前記封入手段による前記基準容
器及び前記ピストン燃焼室への空気封入時における前記
基準容器内及び前記ピストン燃焼室内の圧力を測定する
圧力測定手段とを備えたことを特徴とするピストン燃焼
室容積計測装置に係るものである。A second aspect of the present invention is to enclose a reference container having a known capacity and a piston combustion chamber, which is an object to be measured, with a certain amount of air, and to enclose the air enclosed by the enclosing device with the air. A sealing means for sealing the inside of the reference container and the piston combustion chamber, and a pressure measuring means for measuring the pressure inside the reference container and the piston combustion chamber when the reference container and the piston combustion chamber are filled with air by the sealing means. The present invention relates to a piston combustion chamber volume measuring device including:
【０００７】[0007]
【作用】本発明は、予め容量の判っている基準容器に空
気を封入してポリトロープ変化指数を求め、さらに、測
定すべきピストン燃焼室へ同様に空気を封入してその封
入時の圧力を測定し、その測定値と、前記基準容器への
空気の封入により求められたポリトロープ変化指数とか
ら、基準容器と測定すべきピストン燃焼室との容量差を
求めることで該ピストン燃焼室の容量を求めるものであ
る。In the present invention, the polytropic change index is obtained by enclosing air in a standard container of known capacity, and further, air is similarly enclosed in the piston combustion chamber to be measured and the pressure at the time of enclosing is measured. Then, the volume of the piston combustion chamber is obtained by obtaining the volume difference between the reference vessel and the piston combustion chamber to be measured from the measured value and the polytropic change index obtained by enclosing the air in the reference vessel. It is a thing.
【０００８】すなわち、前記基準容器に一定量の空気を
封入すると共に、該空気封入時における基準容器内の圧
力を測定し、この基準容器への空気の封入によりポリト
ロープ変化指数ｎを求める。That is, a predetermined amount of air is filled in the reference container, the pressure in the reference container when the air is filled is measured, and the polytropic change index n is obtained by filling the reference container with air.
【０００９】すなわち、気体の状態は、ポリトロープ変
化において、圧力をＰ、容積をＶ、ポリトロープ変化指
数をｎとすれば、ＰＶn ＝一定となるから、前記基準容
器の容量をＸ、前記基準容器に対する封入空気量をＹ
1 、前記基準容器への空気封入時の圧力をＰ1 、大気圧
をＰ0 とすれば、次式が成立する。That is, the gas state is PV n = constant, where P is the pressure, V is the volume, and n is the polytropic change index in the polytropic change. Therefore, the volume of the reference container is X and the reference container is the same. The enclosed air amount for Y
1. If the pressure when air is filled in the reference container is P 1 and the atmospheric pressure is P 0 , the following equation holds.
【００１０】 Ｐ0 ・（Ｘ＋Ｙ1 ）n ＝Ｐ1 ・Ｘn …（式１）P 0 · (X + Y 1 ) n = P 1 · X n (Equation 1)
【００１１】Ｐ0 ＝１として、式１をｎについて解く
と、次式が得られる。Solving Equation 1 for n with P 0 = 1 yields the following equation:
【００１２】 ｎ＝ｌｏｇＰ1 ／｛ｌｏｇ（Ｘ＋Ｙ1 ）−ｌｏｇＸ｝…（式２）N = logP 1 / {log (X + Y 1 ) −logX} (Equation 2)
【００１３】したがって、この式に既知量である前記基
準容器の容量Ｘ、及び前記基準容器に対する封入空気量
Ｙ1 と、測定された前記基準容器への空気封入時の圧力
Ｐ1を代入することにより、ポリトロープ変化指数ｎを
求める。Therefore, by substituting the known volume X of the reference container, the enclosed air amount Y 1 into the reference container, and the measured pressure P 1 at the time of air injection into the reference container into this equation. Then, the polytropic change index n is obtained.
【００１４】一方、測定対象物であるピストン燃焼室内
にも、前記基準容器と同様に、一定量の空気を封入する
と共に、該空気封入時におけるピストン燃焼室内の圧力
を測定する。On the other hand, a fixed amount of air is filled in the piston combustion chamber, which is an object to be measured, as in the case of the reference container, and the pressure in the piston combustion chamber when the air is filled is measured.
【００１５】かかるピストン燃焼室への空気の封入にお
いても、前記の基準容器への空気封入と同様に、次式が
成立する。In enclosing air in the piston combustion chamber, the following equation holds, as in the case of enclosing air in the reference container.
【００１６】 Ｐ0 ・（Ｘ＋Ｙ2 ＋Ｚ）n ＝Ｐ2 ・（Ｘ＋Ｚ）n …（式３）P 0 · (X + Y 2 + Z) n = P 2 · (X + Z) n (Equation 3)
【００１７】ここで、Ｙ2 はピストン燃焼室に対する封
入空気量、Ｐ2 はピストン燃焼室への空気封入時の圧
力、ｎはポリトロープ変化指数、Ｚはピストン燃焼室と
前記基準容器との容量差である。Here, Y 2 is the amount of air filled in the piston combustion chamber, P 2 is the pressure when air is filled in the piston combustion chamber, n is the polytropic change index, and Z is the volume difference between the piston combustion chamber and the reference container. Is.
【００１８】前記式３をＺについて解けば、次式が得ら
れる。By solving the above equation 3 for Z, the following equation is obtained.
【００１９】 Ｚ＝｛Ｙ2 ／（Ｐ2 1/n −１）｝−Ｘ…（式４）Z = {Y 2 / (P 2 1 / n −1)} − X ... (Equation 4)
【００２０】この式４に、既知量であるピストン燃焼室
に対する封入空気量Ｙ2 、及び測定されたピストン燃焼
室への空気封入時の圧力Ｐ2 、さらに前記基準容器への
空気封入により求められたポリトロープ変化指数ｎを代
入することにより、ピストン燃焼室と前記基準容器との
容量差Ｚが求められる。This equation 4 is obtained by the known amount of enclosed air Y 2 for the piston combustion chamber, the measured pressure P 2 at the time of air filling the piston combustion chamber, and the air filling of the reference container. By substituting the polytropic change index n, the capacity difference Z between the piston combustion chamber and the reference container is obtained.
【００２１】したがって、前記基準容器の容量Ｘに該容
量差Ｚを加えることにより、当該ピストン燃焼室の容量
を求めることができる。Therefore, the capacity of the piston combustion chamber can be determined by adding the capacity difference Z to the capacity X of the reference container.
【００２２】このように、本願発明に係る計測方法で
は、温度データ等の圧力以外の状態量を考慮する必要が
ないため、等温変化となるように時間をかけて空気を封
入する必要がなく、また、恒温室を使用する必要もな
く、簡単にピストン燃焼室の容量を計測することができ
る。As described above, in the measuring method according to the present invention, since it is not necessary to consider the state quantities other than the pressure such as the temperature data, it is not necessary to enclose the air over time so that the temperature changes isothermally. Further, the volume of the piston combustion chamber can be easily measured without the need to use a temperature-controlled room.
【００２３】また、液体を注入していた従来の計測方法
と異なり、空気を封入するものであるため、取り扱いが
容易であり、計測コストも安価で、然も基準容器との比
較により精度の良い計測が可能である。Further, unlike the conventional measuring method in which a liquid is injected, since air is enclosed, it is easy to handle, the measuring cost is low, and it is more accurate than the reference container. It is possible to measure.
【００２４】さらに、前記本願の第２の発明は、前記本
願の第１の発明に係るピストン燃焼室容積計測方法に使
用する計測装置に係るもので、前記封入手段は、前記基
準容器及び測定対象物である前記ピストン燃焼室内に一
定量の空気を封入するものである。Further, the second invention of the present application relates to a measuring device used in the piston combustion chamber volume measuring method according to the first invention of the present application, wherein the enclosing means is the reference container and the measuring object. A certain amount of air is enclosed in the piston combustion chamber, which is the object.
【００２５】また、前記密閉手段は、前記封入手段によ
り封入された空気を前記基準容器内及び前記ピストン燃
焼室内に密閉する。さらに、前記圧力測定手段は、前記
封入手段による前記基準容器及び前記ピストン燃焼室へ
の空気封入時における前記基準容器内及び前記ピストン
燃焼室内の圧力を測定する。The sealing means seals the air sealed by the sealing means in the reference container and the piston combustion chamber. Further, the pressure measuring means measures the pressure inside the reference container and the piston combustion chamber when the reference container and the piston combustion chamber are filled with air by the filling means.
【００２６】[0026]
【実施例】本発明の一実施例を図面に基き説明する。図
１は、本発明の一実施例に係るピストン燃焼室容積計測
装置の構成を示す該略図であるが、該装置は、前記封入
手段として封入シリンダ１及び該封入シリンダ１により
送出される空気を測定対象物等に導く配管２を、前記圧
力測定手段として圧力センサ３を、また、前記密閉手段
として密閉用ヘッダ４を備え、さらに、封入シリンダ１
により封入された空気を放出するための大気開放弁５を
備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing the structure of a piston combustion chamber volume measuring device according to an embodiment of the present invention. The device is configured to include an enclosing cylinder 1 as the enclosing means and air delivered by the enclosing cylinder 1. A pipe 2 for guiding to an object to be measured or the like, a pressure sensor 3 as the pressure measuring means, and a sealing header 4 as the sealing means are further provided, and the enclosed cylinder 1 is further provided.
The atmosphere release valve 5 is provided for releasing the air enclosed by.
【００２７】密閉用ヘッダ４の内周部には、不図示のリ
ング状のエア封入ゴムシールが組み込まれており、該ゴ
ムシールにエアが封入されることにより、測定対象であ
るピストン６の外周面とヘッダ４の内周面との間がシー
ルされ、該ピストン６の燃焼室６ａが密閉される。A ring-shaped air-filled rubber seal (not shown) is incorporated in the inner peripheral portion of the sealing header 4, and by enclosing air in the rubber seal, an outer peripheral surface of the piston 6 to be measured is formed. The inner peripheral surface of the header 4 is sealed and the combustion chamber 6a of the piston 6 is sealed.
【００２８】本計測装置では、以下のようにして測定対
象であるピストン６の燃焼室６ａの容積が計測される。
すなわち、先ず、予め容積が判っている基準容器（図示
せず）を本装置に装着し前記密閉用ヘッダ４により該基
準容器を密閉する。In this measuring device, the volume of the combustion chamber 6a of the piston 6 to be measured is measured as follows.
That is, first, a reference container (not shown) whose volume is known in advance is attached to this apparatus, and the reference header is sealed by the sealing header 4.
【００２９】大気解放弁５を閉じ配管２を通じて封入シ
リンダ１により基準容器内に空気を封入するとともに、
該封入時における基準容器内の圧力を圧力センサ３によ
り測定する。該圧力の測定後、大気解放弁５を開き、密
閉用ヘッダ４による密閉を解除し基準容器を装置から取
り外す。The atmosphere release valve 5 is closed and air is enclosed in the reference container by the enclosure cylinder 1 through the pipe 2.
The pressure in the reference container at the time of the filling is measured by the pressure sensor 3. After measuring the pressure, the atmosphere release valve 5 is opened, the sealing by the sealing header 4 is released, and the reference container is removed from the apparatus.
【００３０】次に、前記基準容器に換え、図１に示すよ
うに、測定しようとするピストン６を前記基準容器と同
様に本装置に装着し密閉用ヘッダ４により該ピストン６
の燃焼室６ａを密閉する。Next, in place of the reference container, as shown in FIG. 1, the piston 6 to be measured is mounted on the apparatus in the same manner as the reference container, and the piston 6 is closed by the sealing header 4.
The combustion chamber 6a is closed.
【００３１】そして、大気解放弁５を閉じた後、前記基
準容器に対するとと同様にして、封入シリンダ１により
ピストン６の燃焼室６ａに空気を封入し、この封入時の
圧力を圧力センサ３により測定する。After closing the atmosphere release valve 5, air is sealed in the combustion chamber 6a of the piston 6 by the sealing cylinder 1 in the same manner as for the reference container, and the pressure at this sealing is measured by the pressure sensor 3. taking measurement.
【００３２】このようにして、基準容器への空気の封入
時における圧力測定値Ｐ1 、測定すべきピストン燃焼室
６ａへの空気の封入時における圧力測定値Ｐ2 を得る。In this way, the pressure measurement value P 1 when the air is sealed in the reference container and the pressure measurement value P 2 when the air is sealed in the piston combustion chamber 6a to be measured are obtained.
【００３３】前述のように、気体の状態は、ポリトロー
プ変化において、圧力をＰ、容積をＶ、ポリトロープ変
化指数をｎとすれば、ＰＶn ＝一定となるから、基準容
器の容量をＸ（既知量）、封入シリンダ１による基準容
器並びにピストン燃焼室６ａに対する封入空気量をＹ
（既知量）、大気圧をＰ0 として、次式が成立する。As described above, in the gas state, when the pressure is P, the volume is V, and the polytropic change index is n in the polytropic change, PV n = constant. Therefore, the volume of the reference container is X (known). Amount), and the enclosed air amount for the reference container by the enclosed cylinder 1 and the piston combustion chamber 6a is Y
(Known amount) and the atmospheric pressure is P 0 , the following equation holds.
【００３４】 Ｐ0 ・（Ｘ＋Ｙ）n ＝Ｐ1 ・Ｘn …（式５）P 0 · (X + Y) n = P 1 · X n (Equation 5)
【００３５】Ｐ0 ＝１として、式１をｎについて解く
と、次式が得られる。Solving equation 1 for n with P 0 = 1 yields:
【００３６】 ｎ＝ｌｏｇＰ1 ／｛ｌｏｇ（Ｘ＋Ｙ）−ｌｏｇＸ｝…（式６）N = logP 1 / {log (X + Y) −logX} ... (Equation 6)
【００３７】したがって、この式６に既知量である基準
容器の容量Ｘ、及び基準容器に対する封入空気量Ｙと、
測定された基準容器への空気封入時の圧力Ｐ1 を代入す
ることにより、ポリトロープ変化指数ｎを求めることが
できる。Therefore, the capacity X of the reference container, which is a known amount in the equation 6, and the enclosed air amount Y for the reference container,
The polytropic change index n can be obtained by substituting the measured pressure P 1 at the time of filling the reference container with air.
【００３８】一方、ピストン燃焼室６ａへの空気の封入
においても、前記の基準容器への空気封入と同様に、次
式が成立する。On the other hand, the following equation is also established when air is enclosed in the piston combustion chamber 6a, as in the case where the air is enclosed in the reference container.
【００３９】 Ｐ0 ・（Ｘ＋Ｙ＋Ｚ）n ＝Ｐ2 ・（Ｘ＋Ｚ）n …（式７）P 0 · (X + Y + Z) n = P 2 · (X + Z) n (Equation 7)
【００４０】ここで、Ｚはピストン燃焼室６ａと基準容
器との容量差である。Here, Z is the capacity difference between the piston combustion chamber 6a and the reference container.
【００４１】前記式７をＺについて解けば、次式が得ら
れる。By solving the above equation 7 for Z, the following equation is obtained.
【００４２】 Ｚ＝｛Ｙ／（Ｐ2 1/n −１）｝−Ｘ…（式８）Z = {Y / (P 2 1 / n −1)} − X ... (Equation 8)
【００４３】この式８に、既知量であるピストン燃焼室
６ａに対する封入空気量Ｙ、及び測定されたピストン燃
焼室６ａへの空気封入時の圧力Ｐ2 、さらに前記式６に
より求められたポリトロープ変化指数ｎを代入すること
により、ピストン燃焼室６ａと前記基準容器との容量差
Ｚが求められる。In this formula 8, the amount Y of air enclosed in the piston combustion chamber 6a, which is a known amount, the measured pressure P 2 when air is enclosed in the piston combustion chamber 6a, and the polytropic change obtained by the above equation 6 By substituting the index n, the capacity difference Z between the piston combustion chamber 6a and the reference container can be obtained.
【００４４】したがって、前記基準容器の容量Ｘに該容
量差Ｚを加えることにより、当該ピストン燃焼室６ａの
容量を求めることができる。Therefore, by adding the capacity difference Z to the capacity X of the reference container, the capacity of the piston combustion chamber 6a can be obtained.
【００４５】なお、前述の実施例では、基準容器への空
気の封入時における圧力測定値Ｐ1と、測定すべきピス
トン燃焼室への空気の封入時における圧力測定値Ｐ2 を
得るために、最初に基準容器への空気の封入を行い、次
にピストン燃焼室への空気の封入を行ったが、これらの
作業順序は逆であっても良いことは勿論である。In the above embodiment, in order to obtain the pressure measurement value P 1 when the air is filled in the reference container and the pressure measurement value P 2 when the air is filled in the piston combustion chamber to be measured, First, air was sealed in the reference container and then air was sealed in the piston combustion chamber, but it goes without saying that the order of these operations may be reversed.
【００４６】また、この明細書において、本計測方法並
びに計測装置は、ピストンの燃焼室の容量を測定するも
のとしたが、他の容器状の対象物の容積を計測するもの
とすることも可能であることは明らかである。Further, in this specification, the present measuring method and measuring device are intended to measure the volume of the combustion chamber of the piston, but it is also possible to measure the volume of another container-shaped object. It is clear that
【００４７】さらに、本計測方法における前記各操作、
すなわち、密閉用ヘッダ４の装着や大気解放弁５の閉
成、空気の封入、圧力センサ３によるデータ取り等を自
動化すれば、計測者の熟練度等に左右されない正確な計
測を行うことが可能となる。Further, each of the above operations in the present measuring method,
That is, if the mounting of the sealing header 4, the closing of the atmosphere release valve 5, the encapsulation of air, the data acquisition by the pressure sensor 3, etc. are automated, it is possible to perform accurate measurement without being influenced by the skill level of the measurer. Becomes
【００４８】[0048]
【発明の効果】以上説明したとおり、本発明によれば、
ピストン燃焼室の容量を、従来の方法より格段に簡単
に、然も精度良く測定することができる。As described above, according to the present invention,
The volume of the piston combustion chamber can be measured much more easily and accurately than the conventional method.
【図１】本発明の一実施例に係るピストン燃焼室容積計
測装置の構成を示す該略図である。FIG. 1 is a schematic diagram showing a configuration of a piston combustion chamber volume measuring device according to an embodiment of the present invention.
１ 封入シリンダ ２ 配管 ３ 圧力センサ ４ 密閉用ヘッダ ５ 大気開放弁 ６ ピストン ６ａ ピストンの燃焼室 1 Enclosed Cylinder 2 Piping 3 Pressure Sensor 4 Sealing Header 5 Atmospheric Release Valve 6 Piston 6a Piston Combustion Chamber
Claims (2)
空気を封入すると共に、該空気封入時における基準容器
内の圧力を測定する工程と、 測定対象物であるピストン燃焼室内に一定量の空気を封
入すると共に、該空気封入時におけるピストン燃焼室内
の圧力を測定する工程とを含み、 前記基準容器の容量をＸ、前記基準容器に対する封入空
気量をＹ1 、前記基準容器への空気封入時の圧力をＰ
1 、大気圧をＰ0 、ポリトロープ変化指数をｎとした場
合に、数式 Ｐ0 ・（Ｘ＋Ｙ1 ）n ＝Ｐ1 ・Ｘn からポリトロープ変化指数ｎを求め、 前記ピストン燃焼室に対する封入空気量をＹ2 、前記ピ
ストン燃焼室への空気封入時の圧力をＰ2 とした場合
に、前記求めたポリトロープ変化指数ｎと、前記ピスト
ン燃焼室への空気封入時の圧力Ｐ2 とから、前記ピスト
ン燃焼室と前記基準容器との容量差Ｚを、数式 Ｐ0 ・（Ｘ＋Ｙ2 ＋Ｚ）n ＝Ｐ2 ・（Ｘ＋Ｚ）n により求め、 該容量差Ｚと前記基準容器の容量Ｘとの和から前記ピス
トン燃焼室の容量を求めることを特徴とするピストン燃
焼室容積計測方法。1. A step of enclosing a fixed amount of air in a reference container having a known capacity and measuring the pressure in the reference container at the time of enclosing the air, and a fixed amount in a piston combustion chamber that is an object to be measured. The air inside the piston combustion chamber and the pressure inside the piston combustion chamber at the time of the air injection, and the volume of the reference container is X, the amount of air enclosed in the reference container is Y 1 , and the air to the reference container is The pressure when sealed is P
1 , where P 0 is the atmospheric pressure and n is the polytropic change index, the polytropic change index n is calculated from the formula P 0 · (X + Y 1 ) n = P 1 · X n, and the amount of air enclosed in the piston combustion chamber is calculated. when Y 2, the pressure at the time of air injection into the piston combustion chamber and P 2, and polytropic variation index n of the calculated, from the pressure P 2 Metropolitan during air inclusion in the piston combustion chamber, the piston combustion The volume difference Z between the chamber and the reference container is determined by the formula P 0 · (X + Y 2 + Z) n = P 2 · (X + Z) n , and the piston is calculated from the sum of the volume difference Z and the volume X of the reference container. A piston combustion chamber volume measuring method, characterized in that the volume of a combustion chamber is obtained.
あるピストン燃焼室内に一定量の空気を封入する封入手
段と、 該封入手段により封入された空気を前記基準容器内及び
前記ピストン燃焼室内に密閉する密閉手段と、 前記封入手段による前記基準容器及び前記ピストン燃焼
室への空気封入時における前記基準容器内及び前記ピス
トン燃焼室内の圧力を測定する圧力測定手段とを備えた
ことを特徴とするピストン燃焼室容積計測装置。2. A reference container having a known capacity and an enclosing means for enclosing a fixed amount of air in a piston combustion chamber, which is an object to be measured, and the air enclosed by the enclosing means in the reference container and the piston combustion chamber. And a pressure measuring means for measuring the pressure in the reference container and the piston combustion chamber when air is sealed in the reference container and the piston combustion chamber by the sealing means. Piston combustion chamber volume measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1780993A JPH06207845A (en) | 1993-01-11 | 1993-01-11 | Method and device for measuring volume of piston combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1780993A JPH06207845A (en) | 1993-01-11 | 1993-01-11 | Method and device for measuring volume of piston combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06207845A true JPH06207845A (en) | 1994-07-26 |
Family
ID=11954061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1780993A Pending JPH06207845A (en) | 1993-01-11 | 1993-01-11 | Method and device for measuring volume of piston combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06207845A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0843167A (en) * | 1994-06-21 | 1996-02-16 | Johnson & Johnson Clinical Diagnostics Inc | Capacity measuring method of liquid reagent |
| JP2017522929A (en) * | 2014-06-05 | 2017-08-17 | デカ・プロダクツ・リミテッド・パートナーシップ | System for calculating fluid volume changes in a pumping chamber |
| US10871157B2 (en) | 2006-04-14 | 2020-12-22 | Deka Products Limited Partnership | Fluid pumping systems, devices and methods |
| US10881778B2 (en) | 2011-11-04 | 2021-01-05 | Deka Products Limited Partnership | Medical treatment system and methods using a plurality of fluid lines |
| US11154646B2 (en) | 2007-02-27 | 2021-10-26 | Deka Products Limited Partnership | Hemodialysis systems and methods |
| US11253636B2 (en) | 2008-01-23 | 2022-02-22 | Deka Products Limited Partnership | Disposable components for fluid line autoconnect systems and methods |
| US11725645B2 (en) | 2006-04-14 | 2023-08-15 | Deka Products Limited Partnership | Automated control mechanisms and methods for controlling fluid flow in a hemodialysis apparatus |
| US11752248B2 (en) | 2008-01-23 | 2023-09-12 | Deka Products Limited Partnership | Medical treatment system and methods using a plurality of fluid lines |
| US11779689B2 (en) | 2011-05-24 | 2023-10-10 | Deka Products Limited Partnership | Blood treatment systems and methods |
-
1993
- 1993-01-11 JP JP1780993A patent/JPH06207845A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0843167A (en) * | 1994-06-21 | 1996-02-16 | Johnson & Johnson Clinical Diagnostics Inc | Capacity measuring method of liquid reagent |
| US10871157B2 (en) | 2006-04-14 | 2020-12-22 | Deka Products Limited Partnership | Fluid pumping systems, devices and methods |
| US11725645B2 (en) | 2006-04-14 | 2023-08-15 | Deka Products Limited Partnership | Automated control mechanisms and methods for controlling fluid flow in a hemodialysis apparatus |
| US11828279B2 (en) | 2006-04-14 | 2023-11-28 | Deka Products Limited Partnership | System for monitoring and controlling fluid flow in a hemodialysis apparatus |
| US11154646B2 (en) | 2007-02-27 | 2021-10-26 | Deka Products Limited Partnership | Hemodialysis systems and methods |
| US11793915B2 (en) | 2007-02-27 | 2023-10-24 | Deka Products Limited Partnership | Hemodialysis systems and methods |
| US11253636B2 (en) | 2008-01-23 | 2022-02-22 | Deka Products Limited Partnership | Disposable components for fluid line autoconnect systems and methods |
| US11752248B2 (en) | 2008-01-23 | 2023-09-12 | Deka Products Limited Partnership | Medical treatment system and methods using a plurality of fluid lines |
| US11779689B2 (en) | 2011-05-24 | 2023-10-10 | Deka Products Limited Partnership | Blood treatment systems and methods |
| US10881778B2 (en) | 2011-11-04 | 2021-01-05 | Deka Products Limited Partnership | Medical treatment system and methods using a plurality of fluid lines |
| JP2017522929A (en) * | 2014-06-05 | 2017-08-17 | デカ・プロダクツ・リミテッド・パートナーシップ | System for calculating fluid volume changes in a pumping chamber |
| US11400272B2 (en) | 2014-06-05 | 2022-08-02 | Deka Products Limited Partnership | Medical treatment system and methods using a plurality of fluid lines |
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