JPH0584375B2 - - Google Patents
Info
- Publication number
- JPH0584375B2 JPH0584375B2 JP59124424A JP12442484A JPH0584375B2 JP H0584375 B2 JPH0584375 B2 JP H0584375B2 JP 59124424 A JP59124424 A JP 59124424A JP 12442484 A JP12442484 A JP 12442484A JP H0584375 B2 JPH0584375 B2 JP H0584375B2
- Authority
- JP
- Japan
- Prior art keywords
- movable valve
- engine
- exhaust port
- internal combustion
- electronic control
- 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 - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/028—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation for two-stroke engines
- F02D13/0284—Variable control of exhaust valves only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/1502—Digital data processing using one central computing unit
- F02P5/1504—Digital data processing using one central computing unit with particular means during a transient phase, e.g. acceleration, deceleration, gear change
-
- 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
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は２サイクル内燃機関の排気時期を制御
する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a device for controlling exhaust timing of a two-stroke internal combustion engine.
２サイクル内燃機関は排気口がピストンによつ
て開閉操作される構成になつているが、その排気
口の上縁に機関回転速度の検出信号に基づき電子
制御部を介して排気口面積を変化させる可動弁を
設け、その排気時期を制御するようにしたものが
ある（特開昭54−158514号公報参照）。この可動
弁は高速回転時には開度を大きくし、低速回転時
には開度を小さくするように制御されることによ
り排気時期を制御し機関の出力を向上させるよう
にしている。
A two-stroke internal combustion engine has an exhaust port that is opened and closed by a piston, and the area of the exhaust port is changed via an electronic control unit based on a detection signal of the engine rotation speed at the upper edge of the exhaust port. There is one in which a movable valve is provided to control the exhaust timing (see Japanese Unexamined Patent Publication No. 158514/1983). This movable valve is controlled to increase the opening degree during high-speed rotation and to decrease the opening degree during low-speed rotation, thereby controlling the exhaust timing and improving the output of the engine.
しかし、この機関回転速度の信号だけによる排
気時期の制御では、加減速操作したときの過渡応
答性が十分でなく、機関の出力を敏感に変化させ
ることはできなかつた。 However, controlling the exhaust timing using only the engine rotational speed signal does not provide sufficient transient response during acceleration/deceleration operations, and it has not been possible to change the engine output sensitively.
本発明の目的は、加減速操作時の過渡応答性に
優れた２サイクル内燃機関の制御装置を提供する
ことにある。
An object of the present invention is to provide a control device for a two-stroke internal combustion engine that has excellent transient response during acceleration and deceleration operations.
上記目的を達成するための本発明の制御装置
は、ピストンによつて開閉されるシリンダ内面の
排気口の上縁に、排気口面積を変化させる可動弁
を設け、この可動弁の開度を機関回転速度の検出
信号に基づき電子制御部を介して制御すべくした
２サイクル内燃機関において、前記可動弁開度を
制御する電子制御部に、前記機関回転速度と共
に、吸気通路の絞り弁開度の検出信号を入力すべ
くしたことを特徴とするものである。
To achieve the above object, the control device of the present invention is provided with a movable valve that changes the area of the exhaust port at the upper edge of the exhaust port on the inner surface of the cylinder that is opened and closed by a piston, and the opening degree of the movable valve is controlled by the engine. In a two-stroke internal combustion engine that is to be controlled via an electronic control unit based on a rotational speed detection signal, the electronic control unit that controls the movable valve opening is configured to control the throttle valve opening of the intake passage along with the engine rotational speed. It is characterized in that a detection signal is input.
以下、本発明を図に示す実施例により説明す
る。
Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.
第１図において、１は２サイクル内燃機関であ
り、２はシリンダ、３はピストン、４はクランク
軸である。シリンダ２の下部には燃料の混合ガス
を導入する吸気通路５が接続され、その吸気通路
５に吸気量を調節する絞り弁６が設けられてい
る。シリンダ２の上部に形成される燃焼室２ａに
は、上面に点火栓７が設けられ、側面には掃気口
８と排気口９が開口している。排気口９の上縁に
は、その排気口面積を変化させるように変位自在
にしたロータリ式の可動弁１０が設けられ、それ
によつて排気時期を制御できるようにしてある。 In FIG. 1, 1 is a two-stroke internal combustion engine, 2 is a cylinder, 3 is a piston, and 4 is a crankshaft. An intake passage 5 for introducing a fuel mixture gas is connected to the lower part of the cylinder 2, and a throttle valve 6 for adjusting the amount of intake air is provided in the intake passage 5. A combustion chamber 2a formed in the upper part of the cylinder 2 is provided with an ignition plug 7 on the upper surface, and a scavenging port 8 and an exhaust port 9 are opened on the side surface. A rotary movable valve 10 is provided at the upper edge of the exhaust port 9 and is movable so as to change the area of the exhaust port, thereby controlling the exhaust timing.
上記可動弁１０の開度は、後述するマイクロコ
ンピユータ１５を内蔵した電子制御部１１によつ
てマツプ制御され、サーボモータユニツト１３を
介して駆動されるようになつている。第２図に示
すように、上記電子制御部１１は、自動二輪車に
対して、その燃料タンク１４の下部のスペース内
に収納されている。 The opening degree of the movable valve 10 is map-controlled by an electronic control section 11 incorporating a microcomputer 15, which will be described later, and is driven via a servo motor unit 13. As shown in FIG. 2, the electronic control section 11 is housed in a space below the fuel tank 14 of the motorcycle.
電子制御部１１は中央演算手段としてマイクロ
コンピユータ１５を有し、可動弁開度の制御マツ
プが記憶させてある。このマイクロコンピユータ
１５には暴走防止回路１６が付設され、暴走する
ことがないようにしてある。また、マイクロコン
ピユータ１５の入力側には入力インタフエース１
７とＡ／Ｄコンバータ２０が設けられ、出力側に
は可動弁制御出力を出力するモータ駆動部２２が
設けられている。 The electronic control section 11 has a microcomputer 15 as a central calculation means, and a control map for the opening of the movable valve is stored therein. This microcomputer 15 is provided with a runaway prevention circuit 16 to prevent runaway. In addition, an input interface 1 is provided on the input side of the microcomputer 15.
7 and an A/D converter 20, and a motor drive section 22 for outputting a movable valve control output is provided on the output side.
上記マイクロコンピユータ１５には、パルサコ
イル１６によつて検出した機関回転速度Ｎが入力
インタフエース１７を介して入力されると共に、
絞りセンサ１８によつて検出した絞り弁開度θtと
水温センナ１９によつて検出した機関の冷却水温
度Ｔとが、それぞれＡ／Ｄコンバータ２０を介し
て入力されるようになつている。また、サーボモ
ータユニツト１３からは現時点の可動弁開度θp
がＡ／Ｄコンバータ２０を介してマイクロコンピ
ユータ１５に入力されるようになつている。 The engine rotational speed N detected by the pulser coil 16 is input to the microcomputer 15 via the input interface 17, and
The throttle valve opening θt detected by the throttle sensor 18 and the engine cooling water temperature T detected by the water temperature sensor 19 are inputted via the A/D converter 20, respectively. The servo motor unit 13 also outputs the current movable valve opening θp.
is input to the microcomputer 15 via the A/D converter 20.
上述のように入力された各信号は、マイクロコ
ンピユータ１５において第３図のブロツクダイヤ
グラムに示すように可動弁制御マツプに参照させ
て演算処理され、モータ駆動部２２に可動弁制御
出力を出力する。このときの可動弁制御は第４図
のフローチヤートに示すルーチンにより処理され
る。この制御には、第６図のフローチヤートに示
すような補正ルーチンが介在させてあり、機関回
転速度変化量及び絞り弁開度変化量と冷却水温度
によつて出力を補正しし、一層高度な制御を行う
ようにしている。 Each signal inputted as described above is processed in the microcomputer 15 with reference to a movable valve control map as shown in the block diagram of FIG. 3, and a movable valve control output is output to the motor drive section 22. The movable valve control at this time is processed by the routine shown in the flowchart of FIG. This control includes a correction routine as shown in the flowchart in Figure 6, which corrects the output based on the amount of change in engine rotational speed, the amount of change in throttle valve opening, and the cooling water temperature, thereby increasing the altitude. We are trying to carry out appropriate control.
上述した電子制御部１１には、可動弁開度の制
御のために機関回転速度Ｎだけでなく、絞り弁開
度θtの検出信号も同時に入力されるため機関の負
荷が制御に加味されることになり、加減速操作時
における過渡応答性を著しく向上することができ
る。 In order to control the movable valve opening, not only the engine rotational speed N but also a detection signal of the throttle valve opening θt is simultaneously input to the electronic control unit 11 described above, so that the engine load is taken into account in the control. This makes it possible to significantly improve transient response during acceleration/deceleration operations.
上述したように本発明の排気時期制御装置は、
ピストンによつて開閉されるシリンダ内面の排気
口の上縁に、排気口面積を変化させる可動弁を設
け、この可動弁の開度を機関回転速度の検出信号
に基づき電子制御部を介して制御すべくした２サ
イクル内燃機関において、前記可動弁開度を制御
する電子制御部に、前記機関回転速度と共に、吸
気通路の絞り弁開度の検出信号を入力すべくした
ので、機関の負荷が制御に加味されることにな
り、加減速操作時における過渡応答性を著しく向
上することができる。
As mentioned above, the exhaust timing control device of the present invention has the following features:
A movable valve that changes the area of the exhaust port is provided at the upper edge of the exhaust port on the inner surface of the cylinder, which is opened and closed by a piston, and the opening degree of this movable valve is controlled via an electronic control unit based on a detection signal of the engine rotation speed. In the desired two-stroke internal combustion engine, the detection signal of the intake passage throttle valve opening is inputted to the electronic control unit that controls the movable valve opening along with the engine rotation speed, so that the engine load can be controlled. As a result, transient response during acceleration/deceleration operations can be significantly improved.
第１図は本発明の実施例による２サイクル内燃
機関の排気時期制御装置を示す概略図、第２図は
同装置を装備した自動二輪車の側面図、第３図は
同制御装置におけるマイクロコンピユータの機能
をブロツクダイヤグラムで示す説明図、第４図は
同制御装置の可動弁開度制御を示すフローチヤー
ト図、第５図は同じく補正ルーチンのフローチヤ
ート図である。
１……２サイクル内燃機関、２……シリンダ、
３……ピストン、５……吸気通路、６……絞り
弁、９……排気口、１０……可動弁、１１……電
子制御部、１５……マイクロコンピユータ、１６
……パルサコイル（機関回転速度検出部）、１８
……絞りセンサ（絞り弁開度検出部）。
Fig. 1 is a schematic diagram showing an exhaust timing control device for a two-stroke internal combustion engine according to an embodiment of the present invention, Fig. 2 is a side view of a motorcycle equipped with the same device, and Fig. 3 is a diagram of a microcomputer in the control device. FIG. 4 is a flowchart showing the movable valve opening control of the control device, and FIG. 5 is a flowchart of the correction routine. 1...Two-stroke internal combustion engine, 2...Cylinder,
3... Piston, 5... Intake passage, 6... Throttle valve, 9... Exhaust port, 10... Movable valve, 11... Electronic control unit, 15... Microcomputer, 16
... Pulsar coil (engine rotation speed detection section), 18
... Throttle sensor (throttle valve opening detection section).
Claims (1)
排気口の上縁に、排気口面積を変化させる可動弁
を設け、この可動弁の開度を機関回転速度の検出
信号に基づき電子制御部を介して制御すべくした
２サイクル内燃機関において、前記可動弁開度を
制御する電子制御部に、前記機関回転速度と共
に、吸気通路の絞り弁開度の検出信号を入力すべ
くしたことを特徴とする２サイクル内燃機関の排
気時期制御装置。1. A movable valve that changes the area of the exhaust port is provided at the upper edge of the exhaust port on the inner surface of the cylinder that is opened and closed by a piston, and the opening degree of this movable valve is controlled via an electronic control unit based on a detection signal of the engine rotation speed. In the two-stroke internal combustion engine to be controlled, a detection signal of the throttle valve opening of the intake passage is inputted to the electronic control unit that controls the movable valve opening along with the engine rotation speed. Exhaust timing control device for cycle internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59124424A JPS614820A (en) | 1984-06-19 | 1984-06-19 | Exhaust timing controller for 2-cycle internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59124424A JPS614820A (en) | 1984-06-19 | 1984-06-19 | Exhaust timing controller for 2-cycle internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS614820A JPS614820A (en) | 1986-01-10 |
| JPH0584375B2 true JPH0584375B2 (en) | 1993-12-01 |
Family
ID=14885138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59124424A Granted JPS614820A (en) | 1984-06-19 | 1984-06-19 | Exhaust timing controller for 2-cycle internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614820A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62267515A (en) * | 1986-05-14 | 1987-11-20 | Honda Motor Co Ltd | Exhaust timing control device for two-cycle engine |
| DE3868528D1 (en) * | 1987-04-14 | 1992-04-02 | Honda Motor Co Ltd | DEVICE AND METHOD FOR EXHAUST TIME CONTROL FOR AN INTERNAL COMBUSTION ENGINE. |
| JPH0830415B2 (en) * | 1987-06-09 | 1996-03-27 | 本田技研工業株式会社 | Exhaust timing control method for 2-cycle engine |
| JP2006239711A (en) * | 2005-03-01 | 2006-09-14 | Mitsumaro Takahashi | Press cutter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54158514A (en) * | 1978-06-05 | 1979-12-14 | Yamaha Motor Co Ltd | Discharge time controller fir 2-cycle engine |
| JPS587059U (en) * | 1982-04-30 | 1983-01-18 | 松下電器産業株式会社 | Combustion equipment fire extinguishing system |
| JPS5813139A (en) * | 1981-07-14 | 1983-01-25 | Matsushita Electric Ind Co Ltd | Electronic control system for car engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5139112U (en) * | 1974-09-17 | 1976-03-24 | ||
| JPS51147813U (en) * | 1975-05-22 | 1976-11-27 |
-
1984
- 1984-06-19 JP JP59124424A patent/JPS614820A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54158514A (en) * | 1978-06-05 | 1979-12-14 | Yamaha Motor Co Ltd | Discharge time controller fir 2-cycle engine |
| JPS5813139A (en) * | 1981-07-14 | 1983-01-25 | Matsushita Electric Ind Co Ltd | Electronic control system for car engine |
| JPS587059U (en) * | 1982-04-30 | 1983-01-18 | 松下電器産業株式会社 | Combustion equipment fire extinguishing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS614820A (en) | 1986-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |