JPH057535B2 - - Google Patents
Info
- Publication number
- JPH057535B2 JPH057535B2 JP58187287A JP18728783A JPH057535B2 JP H057535 B2 JPH057535 B2 JP H057535B2 JP 58187287 A JP58187287 A JP 58187287A JP 18728783 A JP18728783 A JP 18728783A JP H057535 B2 JPH057535 B2 JP H057535B2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- rotation speed
- intake
- natural frequency
- intake 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.)
- Expired - Lifetime
Links
- 230000001052 transient effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000001934 delay Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- F02B2075/1816—Number of cylinders four
-
- 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)
Description
〔産業上の利用分野〕
この発明は、エンジンの吸気装置に関するもの
である。
〔従来技術〕
一般にエンジンの吸気装置はエンジンの燃焼室
に吸入空気を供給するためのものであり、この吸
気装置の１つとして、従来、実開昭56−2023号公
報に示されるように、吸気脈動の周期が吸気管長
をパラメータとして変化することから、この吸気
管長をエンジン回転数に応じて変化させて、エン
ジンの吸気行程においては吸気管内の圧力が正圧
となるようにし、これにより吸入空気量を増大さ
せて充填効率を向上し、過給的効果を得るように
したものがあつた。
しかしながらこのような従来の吸気装置では、
単に検出したエンジン回転数に応じて吸気管長を
可変制御するようにしており、エンジン回転数の
検出には検出遅れがあり、又モータ等の吸気管長
の可変機構には作動遅れがあることから、加速時
等の過渡時には吸気管長の可変制御に遅れが生
じ、十分な過渡応答性が得られないという問題が
あつた。
〔発明の目的〕
この発明は、かかる従来の問題点に鑑み、回転
数の検出遅れやモータ等の作動遅れに起因する過
渡時の吸気管長の制御遅れを防止できるエンジン
の吸気装置を提供せんとするものである。
〔発明の構成〕
そこでこの発明は、エンジンの吸気装置におい
て、第１図の機能ブロツク図に示されるように、
回転数検出手段４０が実際エンジン回転数を検出
するとともに、回転数予測手段４１が回転数検出
手段４０の出力から予測エンジン回転数を発生
し、通常は実際エンジン回転数に応じ、過渡状態
検出手段４３がエンジンの過渡状態を検出したと
きは予測エンジン回転数に応じて制御手段４２が
固有振動数可変制御手段４４を駆動制御して吸気
系の固有振動数を可変制御するようにしたもので
ある。
〔実施例〕
以下、本発明の実施例を図について説明する。
第２図及び第３図は本発明の一実施例によるエ
ンジンの吸気装置を示す。第２図において、１は
エンジン、２は固定管２ａと摺動管２ｂとからな
る長さが可変な吸気管、３は吸気管長を可変制御
するモータ、４は吸気管長を検出する吸気管長セ
ンサ、５はエンジン１のクランク角を検出するク
ランク角センサ、６は上記各センサ４，５の出力
を受けてモータ３に駆動信号を出力する制御回路
である。また７はスロツトル弁、８はエアクリー
ナ、９は排気管、１０は触媒である。
また第３図は上記制御回路６のより具体的な構
成を示し、１１はクランク角センサ５の出力を波
形整形する波形整形回路、１２は吸気管長センサ
４の出力をＡ／Ｄ変換するＡ／Ｄ変換回路、１３
はタイマ、１４はMPU（マイクロプロセツサユニ
ツト）、１５は第４，５図に示すMPU１４の演算
処理のプログラムを格納するROM、１６は
RAM、１７はモータ駆動回路である。そして上
記MPU１４は通常は吸気管２が実際エンジン回
転数に応じた長さとなるように制御信号Ｃ１，Ｃ
２を作成出力し、過渡時は実際エンジン回転数か
ら予測エンジン回転数を求め、吸気管２がこの予
測エンジン回転数に応じた長さになるように制御
信号Ｃ１，Ｃ２を作成出力するものである。また
上記モータ駆動回路１７は下表に示すように、上
記制御信号Ｃ１が“１”のときには制御信号Ｃ２
が“０”のときに吸気管長が短くなる方向に、制
御信号Ｃ２が“１”のときに吸気管長が長くなる
方向にそれぞれモータ３を回転させ、制御信号Ｃ
１が“０”のときには制御信号Ｃ２に関係なく回
転を停止させるものである。
[Industrial Application Field] The present invention relates to an engine intake device. [Prior Art] In general, an engine intake device is for supplying intake air to the combustion chamber of the engine, and as one type of this intake device, conventionally, as shown in Japanese Utility Model Application Publication No. 56-2023, Since the period of intake pulsation changes using the intake pipe length as a parameter, the intake pipe length is changed according to the engine speed so that the pressure inside the intake pipe becomes positive during the engine's intake stroke. There was one that increased the amount of air to improve filling efficiency and obtain a supercharging effect. However, with such conventional intake devices,
The intake pipe length is simply controlled variably according to the detected engine speed, and there is a detection delay in detecting the engine speed, and there is an operation delay in the intake pipe length variable mechanism such as a motor. During transient periods such as during acceleration, there is a delay in variable control of the intake pipe length, resulting in a problem in that sufficient transient response cannot be obtained. [Object of the Invention] In view of these conventional problems, it is an object of the present invention to provide an engine intake system that can prevent delays in controlling the intake pipe length during transient periods due to delays in detection of rotational speed and delays in the operation of motors, etc. It is something to do. [Structure of the Invention] Therefore, the present invention provides an intake system for an engine, as shown in the functional block diagram of FIG.
The rotation speed detection means 40 detects the actual engine rotation speed, and the rotation speed prediction means 41 generates a predicted engine rotation speed from the output of the rotation speed detection means 40. Usually, the transient state detection means 43 detects a transient state of the engine, the control means 42 drives and controls the natural frequency variable control means 44 in accordance with the predicted engine speed to variably control the natural frequency of the intake system. . [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 2 and 3 show an engine intake system according to an embodiment of the present invention. In Fig. 2, 1 is an engine, 2 is an intake pipe of variable length consisting of a fixed pipe 2a and a sliding pipe 2b, 3 is a motor that variably controls the intake pipe length, and 4 is an intake pipe length sensor that detects the intake pipe length. , 5 is a crank angle sensor that detects the crank angle of the engine 1, and 6 is a control circuit that receives outputs from the sensors 4 and 5 and outputs a drive signal to the motor 3. Further, 7 is a throttle valve, 8 is an air cleaner, 9 is an exhaust pipe, and 10 is a catalyst. FIG. 3 shows a more specific configuration of the control circuit 6, where 11 is a waveform shaping circuit that shapes the output of the crank angle sensor 5, and 12 is an A/D converter that converts the output of the intake pipe length sensor 4. D conversion circuit, 13
14 is a timer, 14 is an MPU (microprocessor unit), 15 is a ROM that stores the arithmetic processing program of the MPU 14 shown in Figures 4 and 5, and 16 is a
RAM 17 is a motor drive circuit. The MPU 14 normally sends control signals C1 and C so that the length of the intake pipe 2 corresponds to the actual engine speed.
2 is generated and output, and during a transient period, the predicted engine rotation speed is calculated from the actual engine rotation speed, and control signals C1 and C2 are generated and outputted so that the length of the intake pipe 2 corresponds to this predicted engine rotation speed. be. Further, as shown in the table below, the motor drive circuit 17 receives the control signal C2 when the control signal C1 is "1".
The motor 3 is rotated in the direction in which the intake pipe length is shortened when the control signal C2 is "0", and in the direction in which the intake pipe length is lengthened when the control signal C2 is "1".
When 1 is "0", rotation is stopped regardless of the control signal C2.
以上のように本発明によれば、エンジン回転数
に応じて吸気系の固有振動数を可変とし、過渡時
には現在の回転数から予測される回転数に基づい
て吸気系の固有振動数を可変制御するようにした
のでエンジンの過渡応答性を向上できる効果があ
る。
As described above, according to the present invention, the natural frequency of the intake system is made variable according to the engine speed, and during transient periods, the natural frequency of the intake system is variably controlled based on the rotation speed predicted from the current rotation speed. This has the effect of improving the transient response of the engine.
第１図は本発明の構成を示す機能ブロツク図、
第２図は本発明の一実施例によるエンジンの吸気
装置の構成図、第３図は上記装置における制御回
路６のより具体的な構成図、第４図及び第５図は
上記装置におけるMPU１４のバツクグラウンド
ルーチン及びインターラプトルーチンの演算処理
のフローチヤートを示す図である。
４０…回転数検出手段、４１…回転数予測手
段、４２…制御手段、４３…過渡状態検出手段、
４４…固有振動数可変制御手段、１…エンジン、
２…吸気管、３…モータ、５…クランク角セン
サ、１４…MPU。
FIG. 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a block diagram of an engine intake system according to an embodiment of the present invention, FIG. 3 is a more specific block diagram of the control circuit 6 in the above device, and FIGS. 4 and 5 are diagrams of the MPU 14 in the above device. FIG. 3 is a diagram showing a flowchart of arithmetic processing of a background routine and an interrupt routine. 40... Rotation speed detection means, 41... Rotation speed prediction means, 42... Control means, 43... Transient state detection means,
44... Natural frequency variable control means, 1... Engine,
2...Intake pipe, 3...Motor, 5...Crank angle sensor, 14...MPU.
Claims (1)
と、エンジンの過渡状態を検出する過渡状態検出
手段と、吸気系の固有振動数を可変制御する固有
振動数可変制御手段と、上記回転数検出手段が検
出した実際エンジン回転数を所定量増減して予測
エンジン回転数を発生する回転数予測手段と、上
記回転数検出手段，回転数予測手段及び過渡状態
検出手段の各出力を受け通常は上記実際エンジン
回転数に応じ過渡時は上記予測エンジン回転数に
応じて上記固有振動数可変制御手段を駆動制御す
る制御手段とを備えたことを特徴とするエンジン
の吸気装置。1. A rotation speed detection means for detecting the engine rotation speed, a transient state detection means for detecting a transient state of the engine, a natural frequency variable control means for variably controlling the natural frequency of the intake system, and the above rotation speed detection means. A rotation speed prediction means for generating a predicted engine rotation speed by increasing or decreasing the detected actual engine rotation speed by a predetermined amount; An intake system for an engine, comprising: control means for driving and controlling the natural frequency variable control means according to the predicted engine speed during a transient period according to the rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58187287A JPS6079118A (en) | 1983-10-05 | 1983-10-05 | Intake-air device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58187287A JPS6079118A (en) | 1983-10-05 | 1983-10-05 | Intake-air device of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6079118A JPS6079118A (en) | 1985-05-04 |
| JPH057535B2 true JPH057535B2 (en) | 1993-01-29 |
Family
ID=16203352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58187287A Granted JPS6079118A (en) | 1983-10-05 | 1983-10-05 | Intake-air device of engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6079118A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802244A1 (en) * | 1999-12-14 | 2001-06-15 | Coutier Moulage Gen Ind | I.c. engine air intake distributor has inner bore and sliding piston to vary its volume |
| US6983727B2 (en) * | 2002-03-19 | 2006-01-10 | Siemens Vdo Automotive Inc. | Continuously variable intake manifold with intelligent position control |
| EP1777386B1 (en) * | 2005-10-19 | 2008-07-09 | Ford Global Technologies, LLC | Air intake system with continuously variable length intake tube and method for the variation of the length of such an intake tube |
-
1983
- 1983-10-05 JP JP58187287A patent/JPS6079118A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6079118A (en) | 1985-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5937454U (en) | Drive structure with internal combustion engine transmitting torque fluctuations | |
| JPH057535B2 (en) | ||
| JP2002250245A5 (en) | ||
| KR880014253A (en) | Ignition timing controller | |
| JPH0335241U (en) | ||
| JPS63182236U (en) | ||
| JPH0269041U (en) | ||
| JPS62129533A (en) | Driving gear for throttle valve in internal combustion engine | |
| JPH01160148U (en) | ||
| JPS6249624U (en) | ||
| JPS6197538U (en) | ||
| JPS62153722A (en) | Suction air pressure detector for internal combustion engine | |
| JPS585445A (en) | Feedback fuel controller of internal combustion engine | |
| JPH0558801U (en) | Camshaft torque fluctuation suppression device | |
| JPH0269033U (en) | ||
| JPH0469253U (en) | ||
| JPH0269040U (en) | ||
| JPS61186717U (en) | ||
| JPH04219437A (en) | Transient fuel compensation for internal combustion engine | |
| JPH01174548U (en) | ||
| JPS62140433U (en) | ||
| JPH0382847U (en) | ||
| JPH01102440U (en) | ||
| JPH01127947U (en) | ||
| JPS62261626A (en) | engine control device |