CN202522573U - Mechanism for detecting rotating speed of engine - Google Patents
Mechanism for detecting rotating speed of engine Download PDFInfo
- Publication number
- CN202522573U CN202522573U CN2012201314337U CN201220131433U CN202522573U CN 202522573 U CN202522573 U CN 202522573U CN 2012201314337 U CN2012201314337 U CN 2012201314337U CN 201220131433 U CN201220131433 U CN 201220131433U CN 202522573 U CN202522573 U CN 202522573U
- Authority
- CN
- China
- Prior art keywords
- rotating speed
- engine
- crank throw
- signal disc
- sensor
- 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
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Abstract
The utility model provides a mechanism for detecting the rotating speed of an engine, which comprises a rotating speed signal disc and a sensor. The rotating speed signal disc is arranged on the crank throw of a crankshaft. The sensor is arranged on the left or right side of a cylinder body. The rotating speed signal disc is arranged on the crank throw and is circumferentially positioned through a positioning pin. The positioning pin, the rotating speed signal disc, the crank throw and the crankshaft are in interference fit with each other. The rotating speed signal disc is fixed to the crank throw through hexagon-headed bolts. Three or more hexagon-headed bolts are provided. The gap D between the sensor and the rotating speed signal disc is 1-3 mm. The mechanism effectively improves the operation reliability and the assembly positioning accuracy of the signal disc and simplifies the assembly operation of the signal disc on an engine. Thus, the mechanism for detecting the rotating speed of an engine can be adapted to most electronically controlled diesel engines and fully meet the precision requirement of electronically controlled diesel engines on detecting the rotating speed signals of crankshafts.
Description
Technical field
The utility model relates to a kind of engine speed testing agency, belongs to motor car engine/electron controls technology field.
Background technology
At present, the obtain front end or the rear end that are employed in bent axle of engine rotational speed signal increase signal panels or obtain signal from flywheel more, and these methods of obtaining signal make that the precision of obtaining signal is relatively poor, and the assembling of signal panels is not good.Make that in addition the axis of engine is oversize.
Summary of the invention
The purpose of the utility model is in order to solve the deficiency of prior art; And a kind of engine speed testing agency that proposes; The utility model improves the stability that sensor obtains engine rotational speed signal effectively, improves signal panels and the bent axle assembling on engine.Do not increase simultaneously the axis size of engine.
The technical scheme of the utility model: the engine speed testing agency of the utility model comprises tach signal dish and sensor, and its tach signal dish is installed on the crank throw of bent axle; Sensor is installed in the left side or the right side of cylinder block.
Circumferentially being located by register pin between described tach signal dish installation and the crank throw, is interference fit between register pin and tach signal dish and the crank throw bent axle.
Described tach signal dish is fixed on the crank throw through hexagon head bolt, and the quantity of hexagon head bolt is equal to or greater than 3.
The clearance D of described sensor and tach signal dish is 1～3mm.
The utility model technique effect: the utility model improved effectively the functional reliability of signal panels, also improved assembling positional precision, simplified the assembling of signal panels on engine.Do not increase simultaneously the axis size of engine.Be applied on most electronic controlled diesels, satisfied the accuracy requirement of electronic controlled diesel fully the speed of crankshaft signal.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of the utility model.
Fig. 2 is the side-looking structural representation of the utility model.
Embodiment
Below in conjunction with implementing example the utility model is further described.
As depicted in figs. 1 and 2: a kind of engine speed testing agency of the utility model comprises tach signal dish and sensor, and its tach signal dish 1 is installed on the crank throw 3 of bent axle 2; Sensor 6 is installed in the left side or the right side of cylinder block 7.
Circumferentially being located by register pin 4 between described tach signal dish 1 installation and the crank throw 3, is interference fit between register pin 4 and tach signal dish 1 and crank throw 3 bent axles.
Described tach signal dish 1 is fixed on the crank throw 3 through hexagon head bolt 5, and the quantity of hexagon head bolt 5 is equal to or greater than 3, guarantees that tach signal dish 1 is connected with the firm of crank throw 3.
Described sensor 6 is 1～3mm with the clearance D of tach signal dish 1.
Described bent axle is to turn (multicylinder engine) more, or (single-barrel engine) that singly turn all can.
The engine speed testing agency of the utility model makes electric-control motor can stably realize obtaining the function of speed of crankshaft signal.
Claims (4)
1. an engine speed testing agency comprises tach signal dish and sensor, it is characterized in that: tach signal dish (1)) be installed on the crank throw (3) of bent axle (2); Sensor (6) is installed in the left side or the right side of cylinder block (7).
2. engine speed according to claim 1 testing agency is characterized in that: tach signal dish (1) install with crank throw (3) between circumferentially locate by register pin (4), be interference fit between register pin (4) and tach signal dish (1) and the crank throw (3).
3. engine speed according to claim 1 and 2 testing agency, it is characterized in that: tach signal dish (1) is fixed on the crank throw (3) through hexagon head bolt (5), and the quantity of hexagon head bolt (5) is equal to or greater than 3.
4. engine speed according to claim 1 and 2 testing agency is characterized in that: sensor (6) is 1～3mm with the clearance D of tach signal dish (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201314337U CN202522573U (en) | 2012-03-31 | 2012-03-31 | Mechanism for detecting rotating speed of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201314337U CN202522573U (en) | 2012-03-31 | 2012-03-31 | Mechanism for detecting rotating speed of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202522573U true CN202522573U (en) | 2012-11-07 |
Family
ID=47105516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201314337U Expired - Fee Related CN202522573U (en) | 2012-03-31 | 2012-03-31 | Mechanism for detecting rotating speed of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202522573U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323235A (en) * | 2020-03-10 | 2020-06-23 | 东风柳州汽车有限公司 | Power output detection device of internal combustion engine and mounting method |
| CN112963245A (en) * | 2021-03-16 | 2021-06-15 | 潍柴动力股份有限公司 | Engine speed sensor air gap control device and control method |
| CN113533773A (en) * | 2021-08-17 | 2021-10-22 | 中国航发贵阳发动机设计研究所 | Aircraft engine fan rotational speed measuring device |
-
2012
- 2012-03-31 CN CN2012201314337U patent/CN202522573U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323235A (en) * | 2020-03-10 | 2020-06-23 | 东风柳州汽车有限公司 | Power output detection device of internal combustion engine and mounting method |
| CN112963245A (en) * | 2021-03-16 | 2021-06-15 | 潍柴动力股份有限公司 | Engine speed sensor air gap control device and control method |
| CN112963245B (en) * | 2021-03-16 | 2021-12-21 | 潍柴动力股份有限公司 | Engine speed sensor air gap control device and control method |
| CN113533773A (en) * | 2021-08-17 | 2021-10-22 | 中国航发贵阳发动机设计研究所 | Aircraft engine fan rotational speed measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |