CN204572909U - With the engine flywheel of signal groove - Google Patents
With the engine flywheel of signal groove Download PDFInfo
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- CN204572909U CN204572909U CN201520027890.5U CN201520027890U CN204572909U CN 204572909 U CN204572909 U CN 204572909U CN 201520027890 U CN201520027890 U CN 201520027890U CN 204572909 U CN204572909 U CN 204572909U
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Abstract
The utility model discloses a kind of engine flywheel assembly with signal groove, and its structure is: the outer ring of flywheel studs with gear ring, and the circumference of flywheel is provided with 58 semi-circular recesses, forms a projection as signal teeth between two grooves.58 semi-circular recesses be provided with, wherein have α=18 ° that to be separated by between a groove, the angle that all the other 57 grooves are separated by is β=6 °, and groove center is distributed on the concentric circle of flywheel.Crankshaft sensor is arranged on flywheel shell of engine, flywheel rotates with bent axle, because flywheel upper groove is different from sensor distance with signal teeth, the waveform that sensor exports is also different, therefore according to each signal and the signal teeth design attitude compared with wide groove, ECU (Electrical Control Unit) can determine when motor is in top dead center state, then the rotating speed of motor can be calculated according to the signal of sensor collection, carry out oil spout regulation and control etc., ensure that motor is in the best time oil spout, makes motor have best performance and emission level.
Description
Technical field
The utility model belongs to engine parts structure technology, is specifically related to a kind of engine flywheel assembly with signal groove.
Background technique
Current motor substantially all adopts automatically controlled form, needs to gather multi-signal for this reason, matches with it and just needs to arrange corresponding sensor.The collection of such as crankshaft-position signal is the most important information of Computer controlled ignition system.Piston top dead center signal, corner signal and engine rotational speed signal that sensor will detect, and inputted computer, thus make calculating function send optimum igniting time instructions by the ignition order of cylinder.Crankshaft position sensor is generally installed on the side of crankshaft-flywheel, therefore needs design one and the signal source of sensor matching on engine flywheel, ensures that sensor can collect required signal.
The collection of current engine crankshaft signals is mostly on the vibration damper of motor head, or on the flywheel of engine rear end, increases and be arranged in a special-purpose member signal code-disc.Layout and the installation of this signal code-disc are very complicated, and also affect the accuracy of signal after assembling.The utility model, in order to match with sensor, designs a kind of fly wheel assembly of band signal groove, and this signal groove and signal code-disc have identical function, and flywheel structure is simplified, and signal stabilization is reliable.
Summary of the invention
The purpose of this utility model is, proposes a kind of engine flywheel assembly with signal groove, can accurately transmit engine phase position and tach signal.
For realizing this object technical solution adopted in the utility model be: the outside of flywheel studs with gear ring, the circumference of flywheel is provided with 58 semi-circular recesses, forms a projection as signal teeth between two grooves.
According to speed probe and ECU characteristic, the more many reliabilities that more can ensure motor Received signal strength of the number of teeth, prevent rotating speed mistake in computation, therefore can the rotating speed of accurate response motor.But number of teeth sensor its profile of tooth of None-identified again mostly, 58 for this reason designed semi-circular recesses.Wherein have α=18 ° that to be separated by between a groove, the angle that all the other 57 grooves are separated by is β=6 °, and groove center is distributed on the concentric circle of flywheel.
Its working principle is, crankshaft sensor is arranged on flywheel shell of engine, when the engine runs, flywheel rotates with engine crankshaft, owing to flywheel being designed with groove and signal teeth, groove is different from sensor distance with signal teeth, therefore exports different waveforms by sensor, and the ECU (Electrical Control Unit) (ECU) on ECU Received signal strength motor calculates the rotating speed of motor according to the signal of sensor collection.Because the signal teeth compared with wide groove is different from other signal teeth, the signal waveform that sensor receives and other waveform different, therefore according to each signal and compared with the signal teeth design attitude of wide groove, ECU can determine when motor is in top dead center state, ensures that motor is in the best time oil spout.Realize automatically controlled thus, ensure that motor has best performance and emission level.
Feature of the present invention and beneficial effect are that flywheel structure is simple, and signal Pocket Machining is convenient.Under the prerequisite not increasing motor peripheral space size, be light face to current cylindrical, do not have the flywheel of signal teeth to improve a little.Form signal teeth by groove, make the signal collected more accurately with stable, the installation of sensor is also very convenient, is applicable to applying on polytype motor greatly.
Accompanying drawing explanation
Fig. 1 is appearance assumption diagram of the present utility model.
Fig. 2 is the location dimension sketch of the utility model structure.
Fig. 3 is this example flywheel profile of tooth schematic diagram and oscillogram.
Embodiment
Below in conjunction with accompanying drawing and by embodiment to structural principle seat further instruction of the present utility model.
With the engine flywheel assembly of signal groove, comprise flywheel, flywheel casing, gear ring and sensor, its structure is: the outer ring of flywheel 1 studs with gear ring 2, and the circumference of flywheel is provided with 58 semi-circular recesses, forms a projection as signal teeth between two grooves.In 58 semi-circular recesses be provided with, wherein have α=18 ° that are relatively separated by between wide groove 1-1, the angle that all the other 57 relative narrower groove 1-2 are separated by is β=6 °, and groove center is distributed on the concentric circle of flywheel.Flywheel casing is provided with crankshaft sensor 3, and sensor is vertical with flywheel end face, and center sensor is between two grooves of angle [alpha]=18 ° of being separated by.Be separated by angle [alpha]=18 ° two grooves between form protruding arc length degree, being greater than angle of being separated by is form protruding arc length degree between ° two grooves of β=6, therefore forms different wave (as Fig. 3 oscillogram).
As embodiment, groove center diameter of a circle D2=310.6mm, groove outer diameter of a circle D1=316.6mm, the width W=6mm of groove, height L=16mm.
Using the signal teeth (only) that formed between two grooves of angle [alpha]=18 ° of being separated by as the signal judging engine tope center, all the other two grooves to be separated by between 6 ° form signal teeth as comparison.Flywheel often circles the waveform of all signal teeth, and all can be able to be exported by sensor, when relatively wide groove forwards sensing station to, this signal waveform and other 57 waveforms are different, see Fig. 3.Therefore can determine that piston is in top dead center state according to the position of this signal teeth, determine the oil injection time of motor the best with this, ensure that cylinder combustion has best performance and emission level.
Claims (4)
1. with the engine flywheel assembly of signal groove, comprise flywheel, flywheel casing, gear ring and sensor, it is characterized in that: the outside of flywheel (1) studs with gear ring (2), the circumference of flywheel is provided with 58 semi-circular recesses, forms a projection as signal teeth between two grooves.
2. according to the engine flywheel assembly with signal groove according to claim 1, it is characterized in that: 58 semi-circular recesses that described flywheel is provided with, wherein there are α=18 ° that to be separated by between a groove, the angle that all the other 57 grooves are separated by is β=6 °, groove center is distributed on the concentric circle of flywheel, and this circular diameter D2 is 310.6mm, and groove outside diameter D1 is 316.6mm, recess width W is 6mm, and height L is 16mm.
3. according to the engine flywheel assembly with signal groove described in claim 1 or 2, it is characterized in that: on flywheel casing, be provided with crankshaft sensor (3), sensor is vertical with flywheel end face, and center sensor is between two grooves of described angle [alpha]=18 ° of being separated by.
4., according to the engine flywheel assembly with signal groove described in claim 1 or 2, it is characterized in that: described in be separated by angle [alpha]=18 ° two grooves between form protruding height, being greater than angle of being separated by is form protruding height between ° two grooves of β=6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520027890.5U CN204572909U (en) | 2015-01-15 | 2015-01-15 | With the engine flywheel of signal groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520027890.5U CN204572909U (en) | 2015-01-15 | 2015-01-15 | With the engine flywheel of signal groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572909U true CN204572909U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520027890.5U Active CN204572909U (en) | 2015-01-15 | 2015-01-15 | With the engine flywheel of signal groove |
Country Status (1)
| Country | Link |
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| CN (1) | CN204572909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114527A (en) * | 2015-08-27 | 2015-12-02 | 天津雷沃动力有限公司 | Flywheel component for extracting revolution speed signal of engine |
| 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 |
-
2015
- 2015-01-15 CN CN201520027890.5U patent/CN204572909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114527A (en) * | 2015-08-27 | 2015-12-02 | 天津雷沃动力有限公司 | Flywheel component for extracting revolution speed signal of engine |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Engine flywheel that has signal recess Effective date of registration: 20190612 Granted publication date: 20150819 Pledgee: Lingyuan steel enterprise limited liability company Pledgor: Dongfeng Chaoyang Chaochai Power Co., Ltd. Registration number: 2019210000021 |