JPS61112727A - Intake air device for internal-combustion engine - Google Patents

Intake air device for internal-combustion engine

Info

Publication number
JPS61112727A
JPS61112727A JP59233952A JP23395284A JPS61112727A JP S61112727 A JPS61112727 A JP S61112727A JP 59233952 A JP59233952 A JP 59233952A JP 23395284 A JP23395284 A JP 23395284A JP S61112727 A JPS61112727 A JP S61112727A
Authority
JP
Japan
Prior art keywords
intake air
air temperature
intake
length
passage
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
Application number
JP59233952A
Other languages
Japanese (ja)
Inventor
Yasuo Yoshikawa
康雄 吉川
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP59233952A priority Critical patent/JPS61112727A/en
Publication of JPS61112727A publication Critical patent/JPS61112727A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0205—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the charging effect
    • F02B27/0215—Oscillating pipe charging, i.e. variable intake pipe length charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0231—Movable ducts, walls or the like
    • F02B27/0236—Movable ducts, walls or the like with continuously variable adjustment of a length or width
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1824—Number of cylinders six
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20—SOHC [Single overhead camshaft]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0294—Actuators or controllers therefor; Diagnosis; Calibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE:To obtain the appropriate length of an intake air passage in response to variation of sound speed depending on temperature by correcting the passage length in accordance with intake air temperature in a device to obtain an optimum length of the intake air passage in accordance with the engine operating condition by varying the length of the intake air passage. CONSTITUTION:Movable partition plates 11 are provided, transversely, in relation to a central separating wall 10, in an intake air manifold 2 having an intake air branched pipe 9 leading each to cylinder and drivenby a stepping motor 12 controlled and driven by a control circuit 5. The control circuit 5 sets the basic length of the intake air tube in response to the output of an engine speed sensor, but because the sound speed is varied and the vibrating frequency of the intake air is different in accordance with the intake air temperature, correction of the predetermined length of the intake air tube is achieved by the control circuit 5 after detecting the intake air temperature with an intake air temperature sensor 4.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、吸気の動的効果によって充填効率の向上を
図った内燃機関の吸気装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an intake system for an internal combustion engine in which charging efficiency is improved by the dynamic effect of intake air.

従来の技術 吸気通路内での吸気の慣性効果あるいは共鳴効果を利用
して吸気弁直前の圧力を高め、充填効率を向上させるよ
うにした内燃帰関の吸気装置が種々知られている。例え
ば１％開昭５７−１９５８５４号公報には、各気筒の吸
気通路の通路長を可変とし１機関回転速度に応じて上記
通路長を制御することによって、広範な回転数詞域で同
調状態つま多充填効率の同上効果を得られるようにした
吸気装置が記載されている。BACKGROUND OF THE INVENTION Various internal combustion air intake systems are known that utilize the inertia effect or resonance effect of intake air in an intake passage to increase the pressure immediately before an intake valve to improve charging efficiency. For example, 1% patent publication No. 57-195854 discloses that the passage length of the intake passage of each cylinder is made variable and the passage length is controlled according to the rotational speed of one engine, thereby making it possible to maintain a synchronized state over a wide rotational speed range. An air intake device is described which is capable of achieving the same effect of filling efficiency.

発明が解決しようとする問題点 しかし、上記従来の吸気装置にあっては１機関回転速度
に対応して予め定められた制御家だけアクチェエータを
駆動することによシ、吸気の振動周波数を機関回転速度
に同調させるようにしているので、吸気温度変化に伴う
吸気の振動周波数の変動に対処することができず、低温
時や高温時には常温時に比べて効果が半旗してしまうと
いう欠点がある。Problems to be Solved by the Invention However, in the above-mentioned conventional intake system, by driving the actuator only in a predetermined controller corresponding to one engine rotation speed, the vibration frequency of the intake air can be adjusted to the engine rotation speed. Since it is synchronized with the speed, it cannot cope with fluctuations in the vibration frequency of the intake air due to changes in the intake air temperature, and has the disadvantage that its effectiveness is reduced to half-mast at low or high temperatures compared to at room temperature.

問題点を解決するための手段 上記の問題点を解決するために、この発明は、吸気通路
内の圧力感動周波Ｉｆｉを変化させる周波数回ｆ機構と
、この周波数回ｆ機構の駆動機構と。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a frequency frequency f mechanism for changing the pressure impression frequency Ifi in the intake passage, and a drive mechanism for this frequency frequency f mechanism.

機関回転速度を検出する回転速度センサと、この機関回
転速度に基づき上記駆動機構を制御する制（至）回路と
を備えてなる内燃機関の吸気装置において、吸気温度を
検出する吸気温度センサを設け。In an intake system for an internal combustion engine comprising a rotation speed sensor for detecting engine rotation speed and a control circuit for controlling the drive mechanism based on the engine rotation speed, an intake air temperature sensor for detecting intake air temperature is provided. .

この吸気温度に応じて上記駆動機構を補正制御するよう
にし九ものである。The drive mechanism is corrected and controlled in accordance with this intake air temperature.

作用 例えば自動車用内燃機関にあっては種々の環境下で夏用
されるため吸気温度は一り０℃〜５０℃程度の広範囲に
亘る。突気の音速ａは。Function: For example, internal combustion engines for automobiles are used in summer under various environments, so the intake air temperature ranges over a wide range from about 0°C to 50°C. The speed of sound a of the sudden thrust is.

ａ＝Ｆ１工Ｉｎ／ａ］　Ｋ：比熱比（約１．４）、Ｒ：
ガス足数（約ｚ　８７　Ｃ”ｆｃｇ−ｘｌ）−Ｔ：＠度
■］の式で示され、その温度に応じて変化するから。a=F1 In/a] K: Specific heat ratio (about 1.4), R:
It is expressed by the formula: gas foot count (approximately z 87 C"fcg-xl) - T: @ degrees ■, and changes depending on the temperature.

吸気通路長等の条件が同一であっても吸気の圧力感動周
波数は異なるものとなる。そこで、この発明は、吸気温
度に基づく音速の変化に対応した補正を加え、異なる温
度下にあっても所期の同調周波数に維持するのである。Even if the conditions such as the length of the intake passage are the same, the pressure impression frequency of the intake air will be different. Therefore, the present invention adds correction corresponding to changes in sound speed based on intake air temperature, and maintains the desired tuning frequency even under different temperatures.

実施例 第１図はこの発明に係る吸気装置の一実施例を示す構成
説明図であって、１は内燃機関、２は周波数可変機構を
備えた可変吸気マニホルド、３はディストリビュータあ
るいはクランクシャフト等に設けられた回転速度センサ
、４は可変吸気マニホルド２の下流側あるいは上流側な
ど吸気通路の適宜な位置に設けられた吸気温度センサ、
５はこれらの信号処理を行う制御回路を夫々示している
。Embodiment FIG. 1 is a configuration explanatory diagram showing an embodiment of an intake system according to the present invention, in which 1 is an internal combustion engine, 2 is a variable intake manifold equipped with a variable frequency mechanism, and 3 is a distributor or crankshaft, etc. 4 is an intake air temperature sensor provided at an appropriate position in the intake passage, such as on the downstream side or upstream side of the variable intake manifold 2;
Reference numeral 5 designates control circuits that perform these signal processes.

尚、吸気温度センサ４は外気温などから間接に吸気温度
を検出するものであっても良い。Note that the intake air temperature sensor 4 may be one that indirectly detects the intake air temperature from the outside air temperature or the like.

上記可変吸気マニホルド２は、第２図にも示すように、
吸気取入口８お↓び複数の吸気ブランチ部９・・・を有
する箱状の本体７内に固定隔壁１０を固設し、÷１〜す
３気肩用の吸気ブランチ部９とす４〜す６気箇用の吸気
ブランチ部９とを区画するとともに、気筒列方向と平行
に一対の可動仕切板１１．１１を摺動可能に配設し、か
つ上記可動仕切板１１．１１下縁のラック部１１ａ、ｌ
ｌａに、ステッピングモータ１２のピニオン１３’１ｉ
−９合させ九構成となっている。すなわち、駆動！構ト
するステッピングモータ１２が回転すると、可動仕切板
１１．１１が本体７の内壁に配設された溝に沿って夫々
互い違いに摺動し、吸気導入通路°１４の実質的管長ｌ
が伸縮して、共鳴周波数が変化するのである。尚、１５
．１６は夫々シール部材を示している。As shown in FIG. 2, the variable intake manifold 2 has the following features:
A fixed partition wall 10 is fixedly installed in a box-shaped main body 7 having an intake port 8 and a plurality of intake branches 9... A pair of movable partition plates 11.11 are slidably disposed parallel to the cylinder row direction, and the lower edge of the movable partition plate 11.11 is Rack parts 11a, l
In la, the pinion 13'1i of the stepping motor 12
-9 is combined to form 9 configurations. In other words, drive! When the configured stepping motor 12 rotates, the movable partition plates 11, 11 alternately slide along the grooves provided on the inner wall of the main body 7, thereby increasing the actual pipe length l of the intake air introduction passage 14.
expands and contracts, and the resonant frequency changes. In addition, 15
．． Reference numeral 16 indicates a sealing member.

次に上記制御回路５によって行われるステッピングモー
タ１２の制御について説明する。Next, the control of the stepping motor 12 performed by the control circuit 5 will be explained.

第３図は補間計算によシ温度補正を行うようにし九実施
例を示す７０−チャートであって、先ず機関回転速度Ｎ
と吸気ｌ温度Ｔとを読み込み、矢に読み込んだ機関回転
速度Ｎに対応する第１制御データＡ、をデータテーブル
エから検索する。上記データテーブルエには、吸気温度
Ｔ、（例えば４０℃）において同調状態となシ得るステ
ッピングモータ１２０回転位置に相当するデータが、予
め各回転速度Ｎに対し与えられている。またステップ４
では同様に読み込んだ機関回転速度Ｎに対応する第２制
御データＡｌｔ−データテーブルＩから検索する。上記
データテーブル■には、吸気温度Ｔ、（例えば−１０℃
）において同調状態となり得るステッピングモータ１２
０回転位置に相当するデータが、各回転速度Ｎに対し与
えられている。そしてステップ５において、これらの−
ＡＩ。FIG. 3 is a 70-chart showing nine embodiments in which temperature correction is performed by interpolation calculation.
and the intake air temperature T, and search the data table for the first control data A corresponding to the engine rotational speed N read in at the arrow. In the data table E, data corresponding to the rotational position of the stepping motor 120 that can be synchronized at the intake air temperature T (for example, 40° C.) is given in advance for each rotational speed N. Also step 4
Then, search is made from the second control data Alt-data table I corresponding to the engine rotational speed N read in the same manner. The above data table ■ shows the intake air temperature T, (for example -10℃
) The stepping motor 12 can be in a synchronized state at
Data corresponding to the 0 rotation position is given for each rotation speed N. And in step 5, these −
A.I.

第２制御データＡ、６Ａｔを用い、ステップ２で読み込
んだ吸気温度Ｔに対し補間計：ｇｔ−行って、その温度
ＴＫｆｉ通な制御データＡＪｋ得るのである。Using the second control data A, 6At, interpolation is performed on the intake air temperature T read in step 2 to obtain control data AJk that is accurate to the temperature TKfi.

尚、更に複数の温度条件に対するデータテーブルを用い
て二次補間等を行うようにしても良い。Furthermore, quadratic interpolation or the like may be performed using data tables for a plurality of temperature conditions.

ｔた第４図に示すフローチャートのように、機関回転速
度Ｎと吸気温度Ｔと金変数とした二次元テーブルマツプ
を与えておき、このテーブルマツプから読み込んだ回転
速度Ｎと吸気一度Ｔとに対応する制御データＡｔ−検索
するようにしても良い。As shown in the flowchart shown in Fig. 4, a two-dimensional table map with engine rotational speed N, intake air temperature T, and metal variables is given, and the rotational speed N and intake air temperature T read from this table map correspond to The control data At- may be searched.

更に巣５図に示すＬうに、機関回転速度Ｎと吸気温度Ｔ
と制御データＡとの関係を予め関数の形で配憶させ、そ
の演算によってＭ！Ａ次制（至）データ人を求めるよう
にすることもできる。Furthermore, as shown in Figure 5, engine rotation speed N and intake air temperature T
The relationship between A and control data A is stored in advance in the form of a function, and the calculation results in M! It is also possible to request the A-level data person.

また吸・気装置としては、吸気通路途中に開閉弁を介し
て連通ずる共鳴容積室を備えたＭｉＬｔ−用いて１回転
数と吸入空気量に応じてこの開閉弁を開閉するようにし
てもよい。Further, as the intake/air device, a MiLt equipped with a resonant volume chamber communicated via an on-off valve in the middle of the intake passage may be used, and this on-off valve may be opened and closed according to the number of revolutions and the amount of intake air. .

発明の効果 以上の説明で明らかなように、この発明に係る内燃機関
の吸気装置によれば、吸気温度に応じて補正を加えるよ
うにしたので、高温時あるいは低温時にあっても吸気の
動的効果を有効に利用して高い充填効率を確保すること
ができる。Effects of the Invention As is clear from the above explanation, according to the intake system for an internal combustion engine according to the present invention, since correction is made according to the intake air temperature, the dynamic intake air flow is maintained even at high or low temperatures. High filling efficiency can be ensured by effectively utilizing the effect.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの発明の一実施例を示す構成説明図。 第２図はそのＩ−［綴にｅつた断面図、第３図はその制
御の流れを示す７ａ−チャート、第４図および第５図は
夫々その制御の異なる実施例を示すフローチャートであ
る。 １・・・内燃機関、２・・・可変吸気マニホルド、３・
・・回転速度センナ、４・・・吸気温度センナ、５・・
・制御回路、１２・・・ステッピングモータ。 第１図 第５図FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention. FIG. 2 is a sectional view taken along line I-[e], FIG. 3 is a 7a-chart showing the flow of control, and FIGS. 4 and 5 are flow charts showing different embodiments of the control. 1... Internal combustion engine, 2... Variable intake manifold, 3...
...Rotational speed sensor, 4...Intake air temperature sensor, 5...
-Control circuit, 12...stepping motor. Figure 1 Figure 5

Claims (1)

【特許請求の範囲】[Claims] （１）吸気通路内の圧力振動周波数を変化させる周波数
可変機構と、この周波数可変機構の駆動機構と、機関回
転速度を検出する回転速度センサと、この機関回転速度
に基づき上記駆動機構を制御する制御回路とを備えてな
る内燃機関の吸気装置において、吸気温度を検出する吸
気温度センサを設け、この吸気温度に応じて上記駆動機
構を補正制御することを特徴とする内燃機関の吸気装置
。(1) A frequency variable mechanism that changes the pressure vibration frequency in the intake passage, a drive mechanism for this frequency variable mechanism, a rotation speed sensor that detects engine rotation speed, and controls the drive mechanism based on this engine rotation speed. What is claimed is: 1. An intake system for an internal combustion engine comprising a control circuit, the intake system comprising: an intake air temperature sensor for detecting intake air temperature; and the drive mechanism is corrected and controlled in accordance with the intake air temperature.
JP59233952A 1984-11-06 1984-11-06 Intake air device for internal-combustion engine Pending JPS61112727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59233952A JPS61112727A (en) 1984-11-06 1984-11-06 Intake air device for internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59233952A JPS61112727A (en) 1984-11-06 1984-11-06 Intake air device for internal-combustion engine

Publications (1)

Publication Number Publication Date
JPS61112727A true JPS61112727A (en) 1986-05-30

Family

ID=16963193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59233952A Pending JPS61112727A (en) 1984-11-06 1984-11-06 Intake air device for internal-combustion engine

Country Status (1)

Country Link
JP (1) JPS61112727A (en)

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