JPH0319448U - - Google Patents
Info
- Publication number
- JPH0319448U JPH0319448U JP8051389U JP8051389U JPH0319448U JP H0319448 U JPH0319448 U JP H0319448U JP 8051389 U JP8051389 U JP 8051389U JP 8051389 U JP8051389 U JP 8051389U JP H0319448 U JPH0319448 U JP H0319448U
- Authority
- JP
- Japan
- Prior art keywords
- knock
- valve timing
- internal combustion
- combustion engine
- frequency band
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000000979 retarding effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
第１図は本考案に係る内燃機関のノツク制御装
置を全体的に示す説明図、第２図は第１図装置中
の制御ユニツトの詳細を示す説明ブロツク図、第
３図はその中のノツク検出回路の動作を示す説明
波形図、第４図は可変バルブタイミング機構の油
圧切換装置を示す説明断面図、第５図は可変バル
ブタイミングの制御動作を一般的に示す説明フロ
ー・チヤート、第６図はその切換特性を示す説明
図、第７図は本考案に係る内燃機関のノツク制御
装置の動作を示すフロー・チヤート、第８図は吸
気弁と排気弁のリフト量の相違を示す説明図、第
９図は吸気弁の着座時の振動レベルを示す説明図
、第１０図は可変バルブタイミング機構を備えた
機関においてバルブタイミングとノツクゲートと
のクランク角度上の位置関係を一例として示す説
明図、第１１図は可変バルブタイミング機構を備
えた機関におけるノツク振動レベルを示す説明図
及び第１２図は本考案の第２実施例を示す第２図
と同様の制御ユニツトの説明ブロツク図である。
１０……内燃機関、１２……吸気管、１４……
スロツトル弁、１８……シリンダヘツド、２０…
…吸気ポート、２２……燃焼室、２４……ピスト
ン、２６……点火プラグ、２８……排気ポート、
３０……排気管、３２……スロツトル位置センサ
、３４…吸気圧力センサ、３６……吸気温センサ
、３８……シリンダブロツク、４０……冷却水通
路、４２……水温センサ、４４，４４０ａ，４４
０ｂ……ノツクセンサ、４６……デイストリビユ
ータ、４８……クランク角センサ、５０……車速
センサ、５２，５２０……制御ユニツト、５４…
…吸気弁、５６……排気弁、６０……可変バルブ
タイミング機構、６２……点火装置、６４……レ
ベル変換回路、６６……マイクロ・コンピユータ
、６８……波形整形回路、７０，７００……ノツ
ク検出回路、７０ａ，７０ｂ……フイルタ手段、
７０ｃ，７００ｃ……マルチプレクサ、７０ｄ，
７００ｄ……コンパレータ手段、７０ｅ，７００
ｅ……Ｄ／Ａ変換回路、７２，７４……出力回路
、６００……油圧スイツチ、６１２……ロツカシ
ヤフト、６１４，６１６，６１８……ロツカアー
ム、６３２……穴、６３４，６３６……孔、６４
０，６４２……連結ピン、６４４……規制ピン、
６４６……油室、６４８……分岐路、６５０……
油路、６５２……バネ、６５４……連通路、６６
０……油圧切換機構、６６２……スプール弁、６
６４……入口ポート、６６６……出口ポート、６
６８……オリフイス孔、６７０……バイパスポー
ト。
FIG. 1 is an explanatory diagram showing the overall structure of a knock control device for an internal combustion engine according to the present invention, FIG. 2 is an explanatory block diagram showing details of the control unit in the device shown in FIG. 1, and FIG. FIG. 4 is an explanatory waveform diagram showing the operation of the detection circuit. FIG. 4 is an explanatory sectional view showing the hydraulic switching device of the variable valve timing mechanism. FIG. 5 is an explanatory flow chart generally showing the control operation of the variable valve timing. Fig. 7 is an explanatory diagram showing the switching characteristics, Fig. 7 is a flow chart showing the operation of the knock control device for an internal combustion engine according to the present invention, and Fig. 8 is an explanatory diagram showing the difference in lift amount between the intake valve and the exhaust valve. , FIG. 9 is an explanatory diagram showing the vibration level when the intake valve is seated, and FIG. 10 is an explanatory diagram showing, as an example, the positional relationship between the valve timing and the knock gate in terms of crank angle in an engine equipped with a variable valve timing mechanism. FIG. 11 is an explanatory diagram showing the knock vibration level in an engine equipped with a variable valve timing mechanism, and FIG. 12 is an explanatory block diagram of a control unit similar to FIG. 2 showing a second embodiment of the present invention. 10... Internal combustion engine, 12... Intake pipe, 14...
Throttle valve, 18... Cylinder head, 20...
...Intake port, 22...Combustion chamber, 24...Piston, 26...Spark plug, 28...Exhaust port,
30... Exhaust pipe, 32... Throttle position sensor, 34... Intake pressure sensor, 36... Intake temperature sensor, 38... Cylinder block, 40... Cooling water passage, 42... Water temperature sensor, 44, 440a, 44
0b... Knock sensor, 46... Distributor, 48... Crank angle sensor, 50... Vehicle speed sensor, 52, 520... Control unit, 54...
... Intake valve, 56 ... Exhaust valve, 60 ... Variable valve timing mechanism, 62 ... Ignition device, 64 ... Level conversion circuit, 66 ... Microcomputer, 68 ... Waveform shaping circuit, 70,700 ... Knock detection circuit, 70a, 70b...filter means,
70c, 700c... multiplexer, 70d,
700d...Comparator means, 70e, 700
e...D/A conversion circuit, 72, 74...Output circuit, 600...Hydraulic switch, 612...Rock shaft, 614, 616, 618...Rock arm, 632...Hole, 634, 636...Hole, 64
0,642...Connection pin, 644...Regulation pin,
646...oil room, 648...branch road, 650...
Oil path, 652...Spring, 654...Communication path, 66
0...Hydraulic switching mechanism, 662...Spool valve, 6
64...Inlet port, 666...Outlet port, 6
68... Orifice hole, 670... Bypass port.
Claims (1)
なくとも一方のバルブタイミング及び／又はリフ
ト量を複数の特性の間で選択的に変更するバルブ
タイミング機構を備えると共に、ノツク検出手段
を通じて機関の所定の振動周波数帯域の出力レベ
ルを検出し、その出力レベルの大きさからノツク
の発生を検知して点火時期を遅角補正するノツク
制御手段を備えてなる内燃機関のノツク制御装置
において、前記可変バルブタイミング機構で選択
される動作特性に応じて前記ノツク検出手段の検
出周波数帯域を変更する様にしたことを特徴とす
る内燃機関のノツク制御装置。 (2) 前記ノツク検出手段は動作帯域において相
互に相違する複数個のフイルタ手段を備え、前記
検出周波数帯域の変更は、前記可変バルブタイミ
ング機構で選択される動作特性に応じて該複数個
のフイルタ手段の少なくとも１個を選択して行う
ことを特徴とする請求項１記載の内燃機関のノツ
ク制御装置。 (3) 前記ノツク検出手段は共振特性において相
互に相違する複数個の検出手段からなり、前記検
出周波数帯域の変更は、前記可変バルブタイミン
グ機構で選択される動作特性に応じて該複数個の
検出手段の少なくとも１個を選択して行うことを
特徴とする請求項１記載の内燃機関のノツク制御
装置。[Claims for Utility Model Registration] (1) A valve timing mechanism that selectively changes the valve timing and/or lift amount of at least one of the intake and exhaust valves between a plurality of characteristics according to the operating state of the internal combustion engine. and a knock control means for detecting the output level of a predetermined vibration frequency band of the engine through the knock detection means, detecting the occurrence of knock from the magnitude of the output level, and retarding the ignition timing. A knock control device for an internal combustion engine, characterized in that the detection frequency band of the knock detection means is changed in accordance with the operating characteristic selected by the variable valve timing mechanism. (2) The knock detection means includes a plurality of filter means that are different from each other in the operating band, and the detection frequency band is changed by controlling the plurality of filter means in accordance with the operating characteristics selected by the variable valve timing mechanism. 2. The knock control device for an internal combustion engine according to claim 1, wherein at least one of the means is selected. (3) The knock detection means is composed of a plurality of detection means having mutually different resonance characteristics, and the detection frequency band is changed depending on the operating characteristics selected by the variable valve timing mechanism. 2. The knock control device for an internal combustion engine according to claim 1, wherein at least one of the means is selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8051389U JPH0648132Y2 (en) | 1989-07-07 | 1989-07-07 | Knock control device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8051389U JPH0648132Y2 (en) | 1989-07-07 | 1989-07-07 | Knock control device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0319448U true JPH0319448U (en) | 1991-02-26 |
| JPH0648132Y2 JPH0648132Y2 (en) | 1994-12-07 |
Family
ID=31625643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8051389U Expired - Lifetime JPH0648132Y2 (en) | 1989-07-07 | 1989-07-07 | Knock control device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648132Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011632A1 (en) * | 1992-11-16 | 1994-05-26 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Knocking noise avoiding device for an engine with a variable valve driving mechanism |
| JP2008267243A (en) * | 2007-04-19 | 2008-11-06 | Mitsubishi Electric Corp | Knock detection device for internal combustion engine |
| US7556527B2 (en) | 2006-12-26 | 2009-07-07 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector assembly |
-
1989
- 1989-07-07 JP JP8051389U patent/JPH0648132Y2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011632A1 (en) * | 1992-11-16 | 1994-05-26 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Knocking noise avoiding device for an engine with a variable valve driving mechanism |
| US7556527B2 (en) | 2006-12-26 | 2009-07-07 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector assembly |
| JP2008267243A (en) * | 2007-04-19 | 2008-11-06 | Mitsubishi Electric Corp | Knock detection device for internal combustion engine |
| JP4482571B2 (en) * | 2007-04-19 | 2010-06-16 | 三菱電機株式会社 | Knock detection device for internal combustion engine |
| US7856308B2 (en) | 2007-04-19 | 2010-12-21 | Mitsubishi Electric Corporation | Knock detection apparatus for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648132Y2 (en) | 1994-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5647312A (en) | Four-stroke Otto engine having hybrid control | |
| US4341188A (en) | Two-cycle internal combustion engine including means for varying cylinder port timing | |
| US4516540A (en) | Two-cycle internal combustion engine including means for varying cylinder port timing | |
| EP0054964B1 (en) | Multi-intake valve type internal combustion engine | |
| US5181491A (en) | Intake system in multi-cylinder type internal combustion engine | |
| US5522360A (en) | Intake control valve | |
| US4484556A (en) | Supercharge control means for an internal combustion engine | |
| EP0156996B1 (en) | Engine valve timing control system | |
| JPH0359253B2 (en) | ||
| US4660514A (en) | Two-cycle internal combustion engine including means for varying cylinder port timing | |
| EP0469596B1 (en) | Multi-cylinder two cycle internal combustion engine | |
| JPH0319448U (en) | ||
| JP2994112B2 (en) | Engine intake system | |
| JPH0345474U (en) | ||
| JPH0442244U (en) | ||
| JP4023637B2 (en) | Electronic fuel injection control device | |
| JPH0319447U (en) | ||
| US6367448B1 (en) | Engine control | |
| US3935843A (en) | Nonlinear vacuum spark advance system | |
| JPH04153524A (en) | Intake device of engine | |
| JPS58167841A (en) | Compression ratio controller of engine | |
| JPH0341150U (en) | ||
| JP3622019B2 (en) | Internal combustion engine | |
| US3800756A (en) | Spark timing control | |
| JP2634466B2 (en) | 4-cycle internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |