JPH02129871U - - Google Patents
Info
- Publication number
- JPH02129871U JPH02129871U JP3803489U JP3803489U JPH02129871U JP H02129871 U JPH02129871 U JP H02129871U JP 3803489 U JP3803489 U JP 3803489U JP 3803489 U JP3803489 U JP 3803489U JP H02129871 U JPH02129871 U JP H02129871U
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- counter
- clock signal
- generating means
- generating
- 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
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 claims 2
- 239000000446 fuel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Description
第１図は本考案の一実施例の電気的構成を示す
ブロツク図、第２図は第１カウンタ３および第２
カウンタ４のカウント動作を説明するための波形
図、第３図および第４図は動作を説明するための
フローチヤート、第５図は従来技術のカウント動
作を説明するための波形図である。
１……クランク角検出器、３……第１カウンタ
、４……第２カウンタ、６……クロツク信号発生
回路、８……燃料噴射制御装置、９……燃料カツ
ト制御部、１１……燃料噴射量制御部、１２……
スイツチ、１３……アクチユエータ。
FIG. 1 is a block diagram showing the electrical configuration of an embodiment of the present invention, and FIG. 2 shows the first counter 3 and the second counter 3.
3 and 4 are flowcharts for explaining the operation, and FIG. 5 is a waveform diagram for explaining the counting operation of the prior art. DESCRIPTION OF SYMBOLS 1... Crank angle detector, 3... First counter, 4... Second counter, 6... Clock signal generation circuit, 8... Fuel injection control device, 9... Fuel cut control unit, 11... Fuel Injection amount control section, 12...
Switch, 13...actuator.
Claims (1)
るパルス発生手段と、 前記パルスの発生周期よりも充分短い一定周期
のクロツク信号を発生するクロツク信号発生手段
と、 前記パルス発生手段からの各パルス間のクロツ
ク信号のパルス数を計測する第１カウンタと、 パルス発生手段からの予め定める複数パルス間
のクロツク信号のパルス数を計測する第２カウン
タとを含み、 前記第１カウンタの計測値は計測応答速度が高
いことが必要な用途に用い、第２カウンタの計測
値は計測精度が高いことが必要な用途に用いるこ
とを特徴とする内燃機関の回転速度計測装置。[Claims for Utility Model Registration] Pulse generating means for generating a pulse at every fixed crank angle of an internal combustion engine; clock signal generating means for generating a clock signal with a fixed period sufficiently shorter than the generating period of said pulse; and said pulse. a first counter that measures the number of pulses of the clock signal between each pulse from the pulse generating means; and a second counter that measures the number of pulses of the clock signal between a plurality of predetermined pulses from the pulse generating means; A rotational speed measuring device for an internal combustion engine, characterized in that the measured value of the counter is used for applications that require a high measurement response speed, and the measured value of the second counter is used for applications that require high measurement accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989038034U JP2543577Y2 (en) | 1989-03-31 | 1989-03-31 | Internal combustion engine rotational speed measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989038034U JP2543577Y2 (en) | 1989-03-31 | 1989-03-31 | Internal combustion engine rotational speed measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02129871U true JPH02129871U (en) | 1990-10-25 |
| JP2543577Y2 JP2543577Y2 (en) | 1997-08-06 |
Family
ID=31545677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989038034U Expired - Lifetime JP2543577Y2 (en) | 1989-03-31 | 1989-03-31 | Internal combustion engine rotational speed measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2543577Y2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53143378A (en) * | 1977-05-20 | 1978-12-13 | Hitachi Ltd | Speed counting system |
| JPS60143777A (en) * | 1983-12-29 | 1985-07-30 | Mitsubishi Electric Corp | Apparatus for measuring rotation number |
| JPS61189461A (en) * | 1985-02-19 | 1986-08-23 | Tokico Ltd | Calculating method for vehicle speed |
| JPS6212873U (en) * | 1985-07-09 | 1987-01-26 | ||
| JPS6413464A (en) * | 1987-07-08 | 1989-01-18 | Jidosha Kiki Co | Vehicle speed measuring method |
-
1989
- 1989-03-31 JP JP1989038034U patent/JP2543577Y2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53143378A (en) * | 1977-05-20 | 1978-12-13 | Hitachi Ltd | Speed counting system |
| JPS60143777A (en) * | 1983-12-29 | 1985-07-30 | Mitsubishi Electric Corp | Apparatus for measuring rotation number |
| JPS61189461A (en) * | 1985-02-19 | 1986-08-23 | Tokico Ltd | Calculating method for vehicle speed |
| JPS6212873U (en) * | 1985-07-09 | 1987-01-26 | ||
| JPS6413464A (en) * | 1987-07-08 | 1989-01-18 | Jidosha Kiki Co | Vehicle speed measuring method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2543577Y2 (en) | 1997-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |