JPS5927234A - Apparatus for detecting pressure of suction pipe - Google Patents
Apparatus for detecting pressure of suction pipeInfo
- Publication number
- JPS5927234A JPS5927234A JP13702082A JP13702082A JPS5927234A JP S5927234 A JPS5927234 A JP S5927234A JP 13702082 A JP13702082 A JP 13702082A JP 13702082 A JP13702082 A JP 13702082A JP S5927234 A JPS5927234 A JP S5927234A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pipe
- negative pressure
- throttle valve
- suction pipe
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/24—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid specially adapted for measuring pressure in inlet or exhaust ducts of internal-combustion engines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、内燃機関の吸気管圧力検出装置に係り、特
に多気筒内燃機関において、脈動のない吸気管圧力を1
個の圧カセンザにより検知することが可能な吸気管圧力
検出装置vtに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intake pipe pressure detection device for an internal combustion engine, and particularly for a multi-cylinder internal combustion engine.
The present invention relates to an intake pipe pressure detection device VT which can be detected by two pressure sensors.
内燃機関には、神々の制御装置1例えば点火時期制#、
EGR制御、空燃比制御や燃料噴射量制御等の制御装置
が設けらり、これらの制御装置は。Internal combustion engines have divine control devices 1 such as ignition timing system #,
Control devices such as EGR control, air-fuel ratio control, and fuel injection amount control are provided.
吸気管負圧をその信号負圧とするのが一般的である。It is common to use the intake pipe negative pressure as the signal negative pressure.
そして従来1例えばD−EFI方式による電子制御燃料
噴射装置においては、燃第1噴射量制御パラメータとし
ての吸気管負圧の検知装置を有するが、この装置Nは、
サージタンク内圧力用のセンナと吸気ρ圧力用の負圧管
とセンナを夫々有し、更にまた1点火時期制御用の負圧
管とヒンサとを前記燃料噴射装置用の検知装置6とは別
に有するものであった。このため、構造が極めて複雑と
なり。Conventional 1, for example, an electronically controlled fuel injection system using the D-EFI system has a detection device for intake pipe negative pressure as a first fuel injection amount control parameter, but this device N has a
It has a senna for the surge tank internal pressure, a negative pressure pipe and a senna for the intake ρ pressure, and further has a negative pressure pipe and a hinge for controlling the ignition timing separately from the detection device 6 for the fuel injection device. Met. This makes the structure extremely complex.
製造コストが高く、信号と1ての負圧値の信頼性を維持
する几めの保守が極めて困難であった。Manufacturing costs were high, and maintenance to maintain the reliability of the signals and negative pressure values was extremely difficult.
また、負圧導出用の負圧管を、多気筒内燃機関の夫々の
分岐吸気管に開口始端させている。このため、各気筒特
有の脈動そのものの、極めて変動の多い吸気管負圧を信
号として利用することとなり、理想的な制御を果し待な
いという不都合があった。Further, a negative pressure pipe for deriving negative pressure has an open end at each branch intake pipe of the multi-cylinder internal combustion engine. For this reason, the intake pipe negative pressure, which is caused by the pulsation unique to each cylinder and has extremely large fluctuations, must be used as a signal, resulting in the inconvenience that ideal control cannot be achieved.
そこでこの発明の目的は、吸気管圧力を正確に測定でき
、簡略な構成なので製造コストも安く。Therefore, the purpose of this invention is to be able to accurately measure the intake pipe pressure, and to have a simple configuration, so the manufacturing cost is low.
信頼性維持のための保守が容易な吸気管圧力検出装置を
実現するにある。The object of the present invention is to realize an intake pipe pressure detection device that is easy to maintain in order to maintain reliability.
以下図面に基づいてこの発明の実施例を具体的かつ詳細
に説明す?)。図において、符号2は気筒たるシリンダ
、4はインジェクタ# 6はスロット/l/ ハ、I+
/ −y−、J、Oti<I)it ’、Q /< /
l/ 7− 、11 ij: tJP 気ハ/l/ 7
’ 、 12はシ°−ジタンク、20はエアクリーナ、
22はピストン、24は吸気管H7りは排気管である。Embodiments of the present invention will be described in detail below based on the drawings. ). In the figure, numeral 2 is the cylinder, 4 is the injector #6 is the slot/l/c, I+
/ -y-, J, Oti<I)it', Q /< /
l/ 7-, 11 ij: tJP Qiha/l/ 7
', 12 is a siege tank, 20 is an air cleaner,
22 is a piston, 24 is an intake pipe H7, and 24 is an exhaust pipe.
前i+Eスロットルパルフロは各襲筒毎に設けられてい
る。前記ザージクンクJ2には気圧導出管26を設ける
。また。Front i+E throttle palflo is provided for each attack cylinder. An air pressure outlet pipe 26 is provided in the Zagekunk J2. Also.
スロットルバルブ下流側に、各気筒毎に負圧導出管2B
、 30.32.34を夫々設け、該負圧導出管28゜
30、32.34を統合′Pf:(6により統合する。Negative pressure outlet pipe 2B for each cylinder on the downstream side of the throttle valve
, 30, 32, and 34 are provided, respectively, and the negative pressure outlet pipes 28, 30, and 32, 34 are integrated by 'Pf: (6).
この際。On this occasion.
各気筒から合流部52 tでの実質的距離が同じになる
ように配管する。前ML気圧導出管26と該統合管36
との間には11i−の差)1−センサ可の圧力センナ4
0を介設し、サージタンク12内の圧力と1E″に気管
圧力の差圧′f;C6川゛市する。The pipes are arranged so that the distance from each cylinder to the merging portion 52t is substantially the same. Front ML pressure outlet pipe 26 and the integrated pipe 36
(11i-difference between) 1-sensor capable pressure sensor 4
A differential pressure 'f' between the pressure inside the surge tank 12 and the tracheal pressure 'f;C6' is established.
尚、前A(2気圧7.’71J−1’N’f 2+’i
及び各員JE 導出’772B 、 30 。In addition, before A (2 atm 7.'71J-1'N'f 2+'i
and JE Derivation '772B, 30.
32.34のぞtlぞ)しにkj、エアダンパ112
、44 、46゜48、50を設け、脈動の影響を防市
する。また、前dCC合金管16vcは負圧4114路
:38を設け、プレッシャレギュレータ(図示せず)に
連結させる。32.34 zo tl) shini kj, air damper 112
, 44, 46°, 48, 50 to prevent the influence of pulsation. Further, the front dCC alloy tube 16vc is provided with a negative pressure 4114 path: 38 and connected to a pressure regulator (not shown).
この発明の実施例は上述の如く構成されているので以下
の如く作用する。Since the embodiment of the present invention is constructed as described above, it operates as follows.
各気筒の分岐吸気管負圧pHはピストンの往腹動により
脈N)lを生ずるが、この発明では各負圧導出管28.
:(0,32,34が統合管36に統合されている為
、統合管36内での圧力は、脈動が平均化された統合管
負圧Plnとなる。The branch intake pipe negative pressure pH of each cylinder produces a pulse N)l due to the forward motion of the piston, but in this invention, each negative pressure outlet pipe 28.
:(Since 0, 32, and 34 are integrated into the integrated pipe 36, the pressure within the integrated pipe 36 becomes the integrated pipe negative pressure Pln in which the pulsations are averaged.
前記気圧導出管26における圧力はサージタンク12内
の圧力P0に等しく、該サージタンク圧P8と前記統合
管圧P111との差圧△PInは単一の圧力センナ40
で検知し得るものである。The pressure in the air pressure outlet pipe 26 is equal to the pressure P0 in the surge tank 12, and the pressure difference ΔPn between the surge tank pressure P8 and the integrated pipe pressure P111 is determined by the single pressure sensor 40.
It can be detected by
尚、この実施例では気圧導出管はサージタンク部分に設
けたが、スロットルバルブより上Mt、 l’nllな
らどの位iN kこ取り付けてもよい。In this embodiment, the air pressure outlet pipe is installed in the surge tank, but it may be installed as far above the throttle valve as long as it is above the throttle valve.
また、上述実施例においてti、気圧2,1出管26を
。In addition, in the above embodiment, ti, atmospheric pressure 2,1 outlet pipe 26.
エアクリーナ20の下流1++++に位11′7するサ
ージタンク12部分に設けたものである。しかして、該
エアクリーナzOの目づまり等の劣化に応じて吸気管負
圧がより高くなるものであるが、上述実施例の如く比較
基準値をエアクリーナ2oの後流がら採る構成とすれば
、エアクリーナ2oの劣化にょる負圧値の変動を巧妙に
補正し得ることとなり、イ目頼性の高い負圧値の検出が
nf能となる。It is provided in the surge tank 12 located 11'7 downstream of the air cleaner 20. However, as the air cleaner zO deteriorates due to clogging or the like, the intake pipe negative pressure becomes higher. However, if the comparison standard value is taken from the downstream side of the air cleaner 2o as in the above embodiment, the air cleaner Fluctuations in the negative pressure value due to deterioration of the 2o can be corrected skillfully, and the negative pressure value can be detected with high reliability.
以上の説明から明らかなように、この発明によれに以下
の効果を45する。As is clear from the above description, the present invention provides the following effects.
(1)、単一の圧力センサにより吸気管圧力を検知でき
る為、圧力センサをやν数個使用していた従来装置に比
し、コストを減少できる上、(8顧性維持のための峡部
の管理が容易となり、これにより制御装置のイバ頼件を
向上させ得る。(1) Since the intake pipe pressure can be detected with a single pressure sensor, costs can be reduced compared to conventional devices that use several pressure sensors. management becomes easier, thereby improving the control device's performance requirements.
C2)、各気前の分岐吸気管ごとに負圧導出管を股1べ
し、各負圧導出管を統合管に統合し、この統合管内圧ノ
!を検知する構成としたので、脈動が平均化さit、
、 (rr NiM性の^い吸気管圧力をIE確に検知
することが可能となる。C2), connect one negative pressure outlet pipe for each branch intake pipe, integrate each negative pressure outlet pipe into a unified pipe, and reduce the internal pressure of this integrated pipe! Since the configuration is configured to detect
, (rr It becomes possible to accurately detect the high intake pipe pressure of NiM.
(S)、エアクリーナより下流側に気圧導出管を設置1
′!する(1ヤ成とすれt、e、エアクリーナの汚れや
F4F1gまり等の劣化の影響によるMlった吸気管負
圧を検出する不都合を1市止し得る。(S) Install a pressure outlet pipe downstream from the air cleaner 1
′! (It is possible to prevent the inconvenience of detecting negative pressure in the intake pipe due to the influence of deterioration such as air cleaner dirt or F4F1g clumping).
図面はこの発明の実施例管示すlit略構成図である。
図において、6はスロットルバルブ、26は気圧導出管
、28.コS0.32.34は負圧導出管、36は統合
管、40は圧力センサである。
代理人 弁理士 西 郷 義 美The drawing is a schematic diagram showing the structure of an embodiment of the present invention. In the figure, 6 is a throttle valve, 26 is an air pressure outlet pipe, 28. 34 is a negative pressure outlet pipe, 36 is an integrated pipe, and 40 is a pressure sensor. Agent Patent Attorney Yoshimi Saigo
Claims (1)
おいて、夫々のスロットルバルブ下流側に負圧導出管を
設け、該負圧導出管を統合管に統合し、前記スロットル
バルブ上流側に気圧導出管を設け、該気圧導出管と前記
統合管との間の差圧を検知する圧力センサを設けたこと
を特徴とする吸気管圧力検出装置。In a multi-cylinder internal combustion engine having a throttle valve for each cylinder, a negative pressure outlet pipe is provided on the downstream side of each throttle valve, the negative pressure outlet pipe is integrated into a unified pipe, and a pressure outlet pipe is provided on the upstream side of the throttle valve. An intake pipe pressure detection device comprising: a pressure sensor for detecting a differential pressure between the air pressure outlet pipe and the integrated pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13702082A JPS5927234A (en) | 1982-08-06 | 1982-08-06 | Apparatus for detecting pressure of suction pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13702082A JPS5927234A (en) | 1982-08-06 | 1982-08-06 | Apparatus for detecting pressure of suction pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5927234A true JPS5927234A (en) | 1984-02-13 |
Family
ID=15188952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13702082A Pending JPS5927234A (en) | 1982-08-06 | 1982-08-06 | Apparatus for detecting pressure of suction pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5927234A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0183265A2 (en) * | 1984-11-29 | 1986-06-04 | Toyota Jidosha Kabushiki Kaisha | Suction pipe pressure detection apparatus |
JPS62152042U (en) * | 1986-03-19 | 1987-09-26 | ||
JPS63190539U (en) * | 1987-05-26 | 1988-12-08 |
-
1982
- 1982-08-06 JP JP13702082A patent/JPS5927234A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0183265A2 (en) * | 1984-11-29 | 1986-06-04 | Toyota Jidosha Kabushiki Kaisha | Suction pipe pressure detection apparatus |
JPS62152042U (en) * | 1986-03-19 | 1987-09-26 | ||
JPH0528343Y2 (en) * | 1986-03-19 | 1993-07-21 | ||
JPS63190539U (en) * | 1987-05-26 | 1988-12-08 |
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