JPH08121287A - Verification method and device for fuel injection quantity measuring device - Google Patents

Verification method and device for fuel injection quantity measuring device

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Publication number
JPH08121287A
JPH08121287A JP25522494A JP25522494A JPH08121287A JP H08121287 A JPH08121287 A JP H08121287A JP 25522494 A JP25522494 A JP 25522494A JP 25522494 A JP25522494 A JP 25522494A JP H08121287 A JPH08121287 A JP H08121287A
Authority
JP
Japan
Prior art keywords
injection
injection amount
measuring device
fluid
amount
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.)
Granted
Application number
JP25522494A
Other languages
Japanese (ja)
Other versions
JP3561977B2 (en
Inventor
Hideaki Hara
秀章 原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP25522494A priority Critical patent/JP3561977B2/en
Publication of JPH08121287A publication Critical patent/JPH08121287A/en
Application granted granted Critical
Publication of JP3561977B2 publication Critical patent/JP3561977B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE: To independently measure pilot injection and main injection plural times individually in a single injection stroke so as to improve precision in a verification method and a verification device for an injection quantity measuring device. CONSTITUTION: As to pilot injection and main injection in a fuel injection device of an internal combustion engine, selection is carried out for each type of injection in a control unit 7, and then, injection is carried out independently in an injector 6, that is, only the pilot injection or only the main injection is carried out when fluid is injected plural times in a single injection stroke. The unselected type of injection is stopped. In this way, only the infection quantity of the selected type of injection is actually measured by means of a volumetric flow rate meter such as a measuring cylinder 9, so that the injection quantity based on the specific type of injection can be precisely measured, and as a result, a measurement value for the injection quantity by an injection quantity measuring device 8 can be verified with high precision. In addition, if individual injection among injections carried out plural times in a single injection stroke is independently added by means of another injection system, no mutual interference in injection occurs, so that verification precision is improved further.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、パイロット噴射機構を
有する燃料噴射ポンプの噴射量を測定する装置の精度を
検定するための方法及び装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for calibrating the accuracy of an apparatus for measuring the injection quantity of a fuel injection pump having a pilot injection mechanism.

【0002】[0002]

【従来の技術】パイロット噴射機構を有する燃料噴射ポ
ンプは、ポンプが1回転する間に、つまり1噴射工程内
に、パイロット噴射とメイン噴射を所定の間隔をおいて
順次行うポンプであって、パイロット噴射とメイン噴射
との間隔はきわめて短い。そのため、それぞれの噴射量
を分離して測定することは非常に難しく、高速で高精度
の測定が可能な噴射量測定装置が必要になる。
2. Description of the Related Art A fuel injection pump having a pilot injection mechanism is a pump for sequentially performing pilot injection and main injection at predetermined intervals during one rotation of the pump, that is, in one injection process. The interval between the injection and the main injection is extremely short. Therefore, it is very difficult to measure each injection quantity separately, and an injection quantity measuring device capable of high speed and highly accurate measurement is required.

【0003】パイロット噴射量とメイン噴射量を分離し
て測定する装置の一つとして、密閉圧力容器内に噴射さ
れた流体の噴射量に比例する圧力値と、高精度な体積流
量計によって測定した総噴射量(パイロット噴射量+メ
イン噴射量)とを使用し、総噴射量を圧力の比(パイロ
ット噴射量とメイン噴射量の比)で分配することによっ
て、パイロット噴射量とメイン噴射量とを測定する装置
が考えられている。また、この装置の他にも、噴射率計
を使用し噴射率を積分して噴射量を測定する装置もあ
る。いずれの測定装置によっても、原理的にはパイロッ
ト噴射量とメイン噴射量を分離して測定することが可能
であることは証明されているが、実際に測定された噴射
量が正しいかどうかということは、測定装置としての十
分な精度検定を行わない限り証明することができない。
As one of the devices for separately measuring the pilot injection amount and the main injection amount, a pressure value proportional to the injection amount of the fluid injected into the closed pressure vessel and a highly accurate volume flow meter were used for measurement. The total injection amount (pilot injection amount + main injection amount) is used, and the total injection amount is distributed at a pressure ratio (ratio between the pilot injection amount and the main injection amount), so that the pilot injection amount and the main injection amount are A measuring device is considered. In addition to this device, there is also a device that uses an injection rate meter to measure the injection amount by integrating the injection rate. It has been proved that the pilot injection amount and the main injection amount can be separated and measured by any measuring device in principle, but whether or not the actually measured injection amount is correct Cannot be certified unless a sufficient accuracy test is performed as a measuring device.

【0004】しかしながら、このようにパイロット噴射
量とメイン噴射量とを分離して測定する装置の検定方法
及び装置で現在のところ実用に供されているものはな
い。流量計の検定装置として特開昭54−1661号公
報に記載されている検定装置は知られているが、この装
置は一定の容器に貯まった液体の体積と、流量計を通っ
た液体の流量とを比較するもので、噴射量測定装置に対
して総噴射量の精度検定はできるものの、パイロット噴
射量とメイン噴射量とを切り離して個々に検定すること
はできない。
However, there is currently no practical method or apparatus for certifying a device for measuring the pilot injection amount and the main injection amount separately. As a verification device for a flow meter, a verification device described in Japanese Patent Laid-Open No. 54-1661 is known. However, this device has a volume of liquid stored in a certain container and a flow rate of the liquid passing through the flow meter. Although the accuracy of the total injection amount can be verified with respect to the injection amount measuring device, the pilot injection amount and the main injection amount cannot be separated and individually verified.

【0005】[0005]

【発明が解決しようとする課題】本発明の目的は、噴射
量測定装置の検定方法及び装置として、ポンプが1回転
する間に(即ち、1噴射工程内に)パイロット噴射とメ
イン噴射のような複数回の噴射を行うことができるもの
であって、しかも1噴射工程内のパイロット噴射とメイ
ン噴射のような複数回の噴射を個々に分離して、それら
を独立に測定することもできるものを提供することにあ
る。
SUMMARY OF THE INVENTION An object of the present invention is to provide a verification method and device for an injection amount measuring device, such as pilot injection and main injection while the pump makes one revolution (that is, within one injection process). It is possible to perform multiple injections, and it is also possible to individually separate multiple injections such as pilot injection and main injection in one injection process, and measure them independently. To provide.

【0006】また、本発明の他の目的は、噴射量測定装
置の検定方法及び装置として、検定時のパイロット噴射
とメイン噴射のような複数回の噴射における各噴射量及
び噴射タイミングを、任意の検定条件又は測定条件に合
わせることができるものを提供することにある。
Another object of the present invention is to provide a verification method and apparatus for an injection amount measuring apparatus, in which each injection amount and injection timing in a plurality of injections such as pilot injection and main injection at the time of verification are arbitrarily determined. It is to provide the one that can be matched with the test condition or the measurement condition.

【0007】[0007]

【課題を解決するための手段】本発明は、前記の課題を
解決するための手段として、1噴射工程内で流体を複数
回噴射する流体噴射ポンプの個々の噴射の噴射量を測定
する測定装置を検定するために、1噴射工程内で複数回
行われる個々の噴射を切り離して、特定の噴射のみを任
意に選んで噴射を実行させると共に、前記噴射工程内の
他の噴射を休止させて、前記特定の噴射による噴射量の
みを実測し、実測された噴射量と前記測定装置によって
得られた特定の噴射のみによる流体の噴射量の測定値と
を比較することにより、前記測定装置を検定する噴射量
測定装置の検定方法及び検定装置を提供する。この場
合、1噴射工程内で複数回行われる個々の噴射を、それ
ぞれ別の噴射系によって独立に行わせることもできる。
As a means for solving the above problems, the present invention is a measuring device for measuring the injection amount of each injection of a fluid injection pump for injecting a fluid a plurality of times in one injection step. In order to verify, the individual injections performed a plurality of times in one injection process are separated, and only a specific injection is arbitrarily selected to execute the injection, and other injections in the injection process are stopped, Only the injection amount by the specific injection is measured, and the measurement device is verified by comparing the measured injection amount with the measured value of the injection amount of the fluid by the specific injection obtained by the measurement device. An inspection method and an inspection device for an injection amount measuring device are provided. In this case, the individual injections performed a plurality of times in one injection process can be independently performed by different injection systems.

【0008】[0008]

【作用】本発明の噴射量測定装置の検定方法或いは検定
装置においては、パイロット噴射とメイン噴射のよう
に、1噴射工程内で流体を複数回噴射する流体噴射ポン
プの個々の噴射を、パイロット噴射のみ、或いはメイン
噴射のみというように、噴射の種類毎に選択して相互に
切り離して独立に噴射を実行させる。選択されない種類
の噴射は休止される。それによって選択された種類の噴
射の噴射量のみを実測するので、特定の種類による噴射
による噴射量のみを正確に測定することが可能になる。
更に、1噴射工程内で複数回行われる個々の噴射を、そ
れぞれ別の噴射系によって独立に行わせると、相互の干
渉による誤差の発生が予防されて、検定精度が一層向上
する。
In the verification method of the injection amount measuring apparatus or the verification apparatus of the present invention, the individual injections of the fluid injection pump that injects the fluid a plurality of times in one injection step, such as the pilot injection and the main injection, are performed by the pilot injection. Only, or only the main injection is selected for each type of injection, and the injections are performed independently of each other. Injection types not selected are deactivated. As a result, only the injection amount of the selected type of injection is actually measured, so that it is possible to accurately measure only the injection amount of the injection of the specific type.
Furthermore, when the individual injections performed a plurality of times in one injection process are independently performed by different injection systems, the occurrence of an error due to mutual interference is prevented, and the verification accuracy is further improved.

【0009】[0009]

【実施例】本発明による噴射量検定装置の基本的な実施
態様を第1実施例として、その構成を図1に示す。1は
モータ、2はモータ1の回転軸1aに取り付けられて回
転信号を発生するエンコーダであって、回転軸1aには
燃料等の液体を加圧して圧送するポンプ3が取り付けら
れて回転駆動されるようになっている。ポンプ3によっ
て加圧された液体は高圧配管4を経て圧力蓄積室(アキ
ュームレータ)5へ送られ、圧力蓄積室5から更に高圧
配管4を経てインジェクタ(燃料噴射弁)6へ送られて
噴射される。インジェクタ6による噴射のタイミング及
び噴射量を制御するためにコントロールユニット7が設
けられる。8は検定装置の検定対象となる噴射量測定装
置であって、前述のインジェクタ6は噴射量測定装置8
に取り付けられており、噴射量測定装置8はインジェク
タ6から噴射される液体の量を測定する。噴射量測定装
置8から出た液体はメスシリンダ9のような体積流量計
内へ導かれて計量されるようになっている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A basic embodiment of an injection quantity verification device according to the present invention is defined as a first embodiment, and its construction is shown in FIG. Reference numeral 1 is a motor, 2 is an encoder attached to a rotary shaft 1a of the motor 1 to generate a rotation signal, and a rotary pump 1a is attached with a pump 3 for pressurizing and pumping a liquid such as fuel to be rotationally driven. It has become so. The liquid pressurized by the pump 3 is sent to the pressure accumulation chamber (accumulator) 5 via the high-pressure pipe 4, and further sent from the pressure accumulation chamber 5 to the injector (fuel injection valve) 6 via the high-pressure pipe 4 to be injected. . A control unit 7 is provided to control the timing and amount of injection by the injector 6. Reference numeral 8 denotes an injection amount measuring device which is an inspection target of the inspection device, and the injector 6 described above is the injection amount measuring device 8
The injection amount measuring device 8 is attached to the injector 6 and measures the amount of the liquid ejected from the injector 6. The liquid discharged from the injection amount measuring device 8 is introduced into a volumetric flow meter such as a graduated cylinder 9 to be measured.

【0010】作動状態において、モータ1を回転させて
ポンプ3から燃料等の液体を圧送させ、圧力蓄積室5に
一定圧力の液体を蓄える。このときのモータ1の回転数
や圧力蓄積室5の圧力値は噴射量測定装置8の検定条件
(又は測定条件)に合わせて設定する。コントロールユ
ニット7は回転軸1aに取り付けられたエンコーダ2か
ら送られて来る回転信号を受けてインジェクタ6を駆動
する信号を設定する。この駆動信号が継続している時間
だけインジェクタ6が開弁して液体が噴射されることに
なる。
In the operating state, the motor 1 is rotated to pump the liquid such as fuel from the pump 3 to store the liquid having a constant pressure in the pressure storage chamber 5. The rotation speed of the motor 1 and the pressure value of the pressure accumulating chamber 5 at this time are set according to the verification condition (or measurement condition) of the injection amount measuring device 8. The control unit 7 receives a rotation signal sent from the encoder 2 attached to the rotary shaft 1a and sets a signal for driving the injector 6. The injector 6 is opened and the liquid is ejected only during the time when the drive signal continues.

【0011】検定の第1ステップとして、検定条件(又
は測定条件)におけるパイロット噴射とメイン噴射のモ
ードが、図2(b)のように設定されている場合、コン
トロールユニット7はインジェクタ6から噴射される液
体の噴射率が図2(b)と同じになるように、図2
(c)に示すような駆動信号を設定する。コントロール
ユニット7から図2(c)のような駆動信号が送り出さ
れると、インジェクタ6からは図2(b)と同じく図2
(d)に示すような噴射率の噴射が実行される。この状
態において噴射量測定装置8によって噴射量を測定し、
測定したパイロット噴射量をQp とし、メイン噴射量を
Qm として記録しておく。
As a first step of the verification, when the mode of pilot injection and main injection under the verification condition (or measurement condition) is set as shown in FIG. 2B, the control unit 7 is injected from the injector 6. 2 so that the ejection rate of the liquid is the same as in FIG.
A drive signal as shown in (c) is set. When a drive signal as shown in FIG. 2C is sent out from the control unit 7, the injector 6 receives the drive signal shown in FIG.
Injection with the injection rate as shown in (d) is executed. In this state, the injection amount measuring device 8 measures the injection amount,
Record the measured pilot injection quantity as Qp and the main injection quantity as Qm.

【0012】次に、検定の第2ステップとして、パイロ
ット噴射又はメイン噴射のいずれか一方のみの噴射量を
測定する。まずパイロット噴射量のみを測定するには、
図2(d)の波形からメイン噴射を消去したパイロット
噴射のみにする。そのため、コントロールユニット7か
らは、図2(c)のうちパイロット噴射の駆動信号だけ
を取り出した図2(e)に示すような信号を送り出し
て、図2(f)のような噴射率の噴射を実行させる。そ
して、このときの噴射量をメスシリンダ9によって実測
してその値をQp0とする。また、メイン噴射量のみを測
定するには、メイン噴射のみをさせるための図2(g)
のような駆動信号をコントロールユニット7から送り出
し、図2(h)のような噴射を実行させて、このときの
噴射量をメスシリンダ9によって実測してその値をQm0
とする。
Next, as the second step of the verification, the injection amount of either the pilot injection or the main injection is measured. First, to measure only the pilot injection amount,
Only the pilot injection in which the main injection is deleted from the waveform of FIG. Therefore, the control unit 7 sends out a signal as shown in FIG. 2 (e) in which only the pilot injection drive signal is taken out from FIG. 2 (c), and the injection rate is as shown in FIG. 2 (f). To execute. Then, the injection amount at this time is actually measured by the graduated cylinder 9 and the value is set to Qp 0 . Further, in order to measure only the main injection amount, FIG.
A drive signal such as is sent from the control unit 7 to execute the injection shown in FIG. 2 (h), the injection amount at this time is measured by the graduated cylinder 9, and the value is Qm 0.
And

【0013】メスシリンダ9によって実測した噴射量Q
p0及びQm0を基準として、それと噴射量測定装置8の測
定値Qp 及びQm とを比較することにより、噴射量測定
装置8の精度を検定することができる。なお、上述の検
定の第1ステップと第2ステップの順序を反対にして実
行してもよいことは言うまでもない。
Injection quantity Q measured by the graduated cylinder 9
The accuracy of the injection amount measuring device 8 can be verified by comparing the measured values Qp and Qm of the injection amount measuring device 8 with p 0 and Qm 0 as references. Needless to say, the order of the first step and the second step of the above-mentioned test may be reversed.

【0014】上述の検定装置は、図1に示すようにポン
プ3、高圧配管4、圧力蓄積室5、インジェクタ6、及
びコントロールユニット7からなる単一の噴射系によっ
て構成されているため、パイロット噴射のみ、或いはメ
イン噴射のみを実行させた場合に、高圧配管4や圧力蓄
積室5内の圧力変動とか、インジェクタ6内に設けられ
たソレノイドの残留磁気の影響等により、パイロット噴
射とメイン噴射を交互に行う場合とは少し違った噴射状
態となるので検定誤差が生じるおそれがある。そこで、
このような誤差が入ることを防止して、更に高精度の検
定を行うことができるようにしたものが図3に示す第2
実施例としての検定装置である。
As shown in FIG. 1, the above-described verification device is composed of a single injection system including a pump 3, a high-pressure pipe 4, a pressure accumulating chamber 5, an injector 6, and a control unit 7. Only, or when only main injection is executed, pilot injection and main injection alternate due to the influence of pressure fluctuations in the high-pressure pipe 4 and the pressure accumulation chamber 5, the residual magnetism of the solenoid provided in the injector 6, and the like. Since the injection state is slightly different from that in the case of (1), there is a possibility that a verification error will occur. Therefore,
The second one shown in FIG. 3 is one that is capable of performing a highly accurate test by preventing such an error.
It is an assay device as an example.

【0015】第2実施例の検定装置の特徴は、独立して
設けられた2つの噴射系から構成されている点にある。
即ち、パイロット噴射を行うための噴射系は、ポンプ
3、高圧配管4、圧力蓄積室5、インジェクタ6、及び
コントロールユニット7から構成されていると共に、メ
イン噴射を行うための噴射系は、ポンプ3’、高圧配管
4’、圧力蓄積室5’、インジェクタ6’、及びコント
ロールユニット7’から構成されていて、これら2つの
噴射系は相互に独立して、並列的に設けられている。そ
して、コントロールユニット7からは図4(b)に示す
ような駆動信号、コントロールユニット7’からは図4
(d)に示すような駆動信号がそれぞれ送り出され、イ
ンジェクタ6からは図4(c)に示すような噴射が、ま
たインジェクタ6’からは図4(e)に示すような噴射
が実行される。
The characteristic of the verification device of the second embodiment is that it is composed of two injection systems independently provided.
That is, the injection system for performing the pilot injection is composed of the pump 3, the high-pressure pipe 4, the pressure accumulating chamber 5, the injector 6, and the control unit 7, and the injection system for performing the main injection is the pump 3 It consists of a high pressure pipe 4 ', a pressure accumulating chamber 5', an injector 6 ', and a control unit 7', and these two injection systems are provided in parallel independently of each other. Then, a drive signal as shown in FIG. 4B is output from the control unit 7, and a drive signal shown in FIG.
Driving signals as shown in (d) are respectively sent out, and the injector 6 performs injection as shown in FIG. 4 (c), and the injector 6 ′ performs injection as shown in FIG. 4 (e). .

【0016】2つのインジェクタ6及び6’が取り付け
られた噴射量測定装置8内では、図4(f)に示すよう
に、パイロット噴射とメイン噴射が交互に行われること
になり、これは図2(d)と同じ噴射波形であるため、
検定の第1ステップを実行することができる。検定の第
2ステップは、コントロールユニット7だけを作動させ
ればパイロット噴射のみとなり、またコントロールユニ
ット7’だけを作動させればメイン噴射のみとなる。こ
の構成では、パイロットとメインの噴射系を別々にする
ことによって、一方の噴射が他方の噴射に影響を与える
ことがなく、検定の第1ステップと第2ステップにおい
て同じ噴射を実行するため、検定誤差の少ない検定を行
うことができる。
In the injection quantity measuring device 8 to which the two injectors 6 and 6'are attached, pilot injection and main injection are alternately performed as shown in FIG. 4 (f), which is shown in FIG. Since the injection waveform is the same as in (d),
The first step of the assay can be performed. In the second step of the verification, if only the control unit 7 is operated, only pilot injection is performed, and if only the control unit 7'is operated, only main injection is performed. In this configuration, by making the pilot and main injection systems separate, one injection does not affect the other injection, and the same injection is executed in the first step and the second step of the verification. A test with a small error can be performed.

【0017】前述の第1実施例及び第2実施例では、ポ
ンプ3及び/又は3’が1回転する間に、パイロット噴
射とメイン噴射がそれぞれ1回ずつ、計2回の噴射が行
われるという形の噴射モードを有している燃料噴射ポン
プについて、その噴射量を測定する装置のための検定装
置及びその検定方法を説明したが、ポンプ1回転の間に
(即ち、1噴射工程内に)3回以上の噴射が行われる燃
料噴射ポンプについても、その噴射量測定装置に対して
同じ考え方を適用して検定を行うことができることは説
明を要しない。
In the first and second embodiments described above, the pilot injection and the main injection are performed once each while the pump 3 and / or 3'makes one revolution, that is, a total of two injections are performed. For a fuel injection pump having a flat injection mode, a verification device and a verification method for the device for measuring the injection amount have been described, but during one revolution of the pump (ie, within one injection process). It is not necessary to explain that the same concept can be applied to the injection amount measuring device for the fuel injection pump in which the injection is performed three times or more.

【0018】また、第1実施例及び第2実施例では、基
準になる流量計としてメスシリンダ9を使用する場合を
例示しているが、メスシリンダ9を他の体積流量計等に
置き換えても、同様に検定を行うことができることは言
うまでもない。
Further, in the first and second embodiments, the case where the graduated cylinder 9 is used as the reference flowmeter is illustrated, but the graduated cylinder 9 may be replaced with another volumetric flowmeter or the like. Needless to say, the same test can be performed.

【0019】[0019]

【発明の効果】本発明によれば、1噴射工程内にパイロ
ット噴射とメイン噴射のような複数回の噴射を行うこと
ができると共に、それらの複数回の噴射を個々に分離し
て、それぞれ独立に測定することもできるので、噴射量
測定装置の検定方法或いは検定装置としての精度を高め
ることができる。
According to the present invention, a plurality of injections such as pilot injection and main injection can be performed in one injection process, and the plurality of injections can be separated individually and independently. Since it can also be measured, the accuracy of the injection amount measuring device as a verification method or a verification device can be improved.

【0020】また、本発明の噴射量測定装置の検定方法
或いは検定装置によれば、検定時のパイロット噴射とメ
イン噴射のような複数回の噴射における各噴射量及び噴
射タイミングを、任意の検定条件又は測定条件に合わせ
ることができるので、自由に選択した検定条件又は測定
条件において高精度の検定を行うことができる。
Further, according to the verification method of the injection amount measuring device or the verification device of the present invention, each injection amount and injection timing in a plurality of injections such as the pilot injection and the main injection at the time of verification can be performed under arbitrary verification conditions. Alternatively, since it can be adjusted to the measurement conditions, highly accurate test can be performed under the freely selected test conditions or measurement conditions.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による噴射量検定装置の第1実施例を示
すシステム構成図である。
FIG. 1 is a system configuration diagram showing a first embodiment of an injection amount verification device according to the present invention.

【図2】第1実施例の噴射量検定装置における噴射モー
ドとコントロールユニットの駆動信号を示すタイムチャ
ートである。
FIG. 2 is a time chart showing an injection mode and a drive signal of a control unit in the injection amount verification device of the first embodiment.

【図3】本発明による噴射量検定装置の第2実施例を示
すシステム構成図である。
FIG. 3 is a system configuration diagram showing a second embodiment of the injection amount verification device according to the present invention.

【図4】第2実施例の噴射量検定装置における噴射モー
ドとコントロールユニットの駆動信号を示すタイムチャ
ートである。
FIG. 4 is a time chart showing an injection mode and a drive signal of a control unit in the injection amount verification device of the second embodiment.

【符号の説明】[Explanation of symbols]

1…モータ 1a…回転軸 2…エンコーダ 3,3’…ポンプ 4,4’…高圧配管 5,5’…圧力蓄積室 6,6’…インジェクタ 7,7’…コントロールユニット 8…噴射量測定装置 9…メスシリンダ(体積流量計) 1 ... Motor 1a ... Rotary shaft 2 ... Encoder 3,3 '... Pump 4,4' ... High pressure piping 5,5 '... Pressure accumulation chamber 6,6' ... Injector 7,7 '... Control unit 8 ... Injection amount measuring device 9 ... Measuring cylinder (volume flow meter)

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 1噴射工程内で流体を複数回噴射する流
体噴射ポンプの個々の噴射の噴射量を測定する測定装置
を検定するために、1噴射工程内で複数回行われる個々
の噴射を切り離して、特定の噴射のみを任意に選んで噴
射を実行させると共に、前記噴射工程内の他の噴射を休
止させて、前記特定の噴射による噴射量のみを実測し、
実測された噴射量と前記測定装置によって得られた特定
の噴射のみによる流体の噴射量の測定値とを比較するこ
とにより、前記測定装置を検定することを特徴とする噴
射量測定装置の検定方法。
1. In order to calibrate a measuring device for measuring the injection amount of each injection of a fluid injection pump that injects a fluid a plurality of times in one injection process, the individual injections performed a plurality of times in one injection process are performed. Separately, while performing injection by arbitrarily selecting only a specific injection, suspending other injections in the injection process, and measuring only the injection amount by the specific injection,
An inspection method of an injection amount measuring device, characterized in that the measurement device is inspected by comparing an actually measured injection amount with a measurement value of an injection amount of a fluid obtained only by a specific injection obtained by the measurement device. .
【請求項2】 1噴射工程内で複数回行われる個々の噴
射を、それぞれ別の噴射系によって独立に行わせるよう
にした請求項1記載の噴射量測定装置の検定方法。
2. The verification method for an injection amount measuring device according to claim 1, wherein individual injections performed a plurality of times in one injection process are independently performed by different injection systems.
【請求項3】 1噴射工程内で流体を複数回噴射する流
体噴射ポンプの個々の噴射の噴射量を測定する測定装置
を検定するために、1噴射工程内で複数回行われる個々
の噴射を切り離して特定の噴射のみを任意に選んで噴射
を実行させる手段と、前記噴射工程内の他の噴射を休止
させる手段と、前記特定の噴射による噴射量のみを実測
する手段と、実測された噴射量と前記測定装置によって
得られた特定の噴射のみによる流体の噴射量の測定値と
を比較するための手段とを備えていることを特徴とする
噴射量測定装置の検定装置。
3. In order to calibrate a measuring device for measuring the injection amount of each injection of a fluid injection pump that injects a fluid a plurality of times in one injection process, the individual injections performed a plurality of times in one injection process are performed. Means for separating and selectively injecting only a specific injection to perform injection, means for suspending other injections in the injection process, means for measuring only the injection amount by the specific injection, and the measured injection An apparatus for inspecting an injection amount measuring apparatus, comprising means for comparing the amount with the measured value of the injection amount of the fluid by only the specific injection obtained by the measuring device.
【請求項4】 流体加圧ポンプと、高圧配管と、圧力蓄
積室と、インジェクタと、コントロールユニットからな
る少なくとも1つの噴射系と、前記インジェクタが取り
付けられる噴射量測定装置と、噴射された流体の量を実
測する体積流量計とを含んでいる請求項3記載の噴射量
測定装置の検定装置。
4. A fluid pressurizing pump, a high pressure pipe, a pressure accumulating chamber, an injector, at least one injection system including a control unit, an injection amount measuring device to which the injector is attached, and an injection amount of the injected fluid. A verification device for an injection amount measuring device according to claim 3, further comprising a volume flow meter for actually measuring the amount.
【請求項5】 個々の噴射の噴射量と噴射タイミングを
自由に設定することができるようにした請求項3又は4
に記載の噴射量測定装置の検定装置。
5. The injection amount and the injection timing of each injection can be freely set.
Verification device of the injection amount measuring device described in.
【請求項6】 流体噴射ポンプから噴射される流体が内
燃機関用の燃料である請求項3乃至5のいずれかに記載
の噴射量測定装置の検定装置。
6. The verification device for an injection amount measuring device according to claim 3, wherein the fluid injected from the fluid injection pump is fuel for an internal combustion engine.
【請求項7】 1噴射工程内で複数回行われる個々の噴
射がパイロット噴射とメイン噴射である、請求項3乃至
6のいずれかに記載の噴射量測定装置の検定装置。
7. The verification device for an injection amount measuring device according to claim 3, wherein the individual injections performed a plurality of times in one injection process are a pilot injection and a main injection.
【請求項8】 1噴射工程内で複数回行われる個々の噴
射を、それぞれ別の噴射系によって独立に行わせるよう
にした請求項3乃至7のいずれかに記載の噴射量測定装
置の検定装置。
8. The inspection device for an injection amount measuring device according to claim 3, wherein each of the injections performed a plurality of times in one injection process is independently performed by different injection systems. .
JP25522494A 1994-10-20 1994-10-20 Inspection method and device for injection amount measuring device Expired - Fee Related JP3561977B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25522494A JP3561977B2 (en) 1994-10-20 1994-10-20 Inspection method and device for injection amount measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25522494A JP3561977B2 (en) 1994-10-20 1994-10-20 Inspection method and device for injection amount measuring device

Publications (2)

Publication Number Publication Date
JPH08121287A true JPH08121287A (en) 1996-05-14
JP3561977B2 JP3561977B2 (en) 2004-09-08

Family

ID=17275760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25522494A Expired - Fee Related JP3561977B2 (en) 1994-10-20 1994-10-20 Inspection method and device for injection amount measuring device

Country Status (1)

Country Link
JP (1) JP3561977B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009036091A (en) * 2007-08-01 2009-02-19 Denso Corp Injection quantity measurement device
JP2012233411A (en) * 2011-04-28 2012-11-29 Denso Corp Flow rate measuring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009036091A (en) * 2007-08-01 2009-02-19 Denso Corp Injection quantity measurement device
JP2012233411A (en) * 2011-04-28 2012-11-29 Denso Corp Flow rate measuring device

Also Published As

Publication number Publication date
JP3561977B2 (en) 2004-09-08

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