CN209524872U - A kind of signal pickup assembly detecting piston top dead center - Google Patents
A kind of signal pickup assembly detecting piston top dead center Download PDFInfo
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- CN209524872U CN209524872U CN201920635935.5U CN201920635935U CN209524872U CN 209524872 U CN209524872 U CN 209524872U CN 201920635935 U CN201920635935 U CN 201920635935U CN 209524872 U CN209524872 U CN 209524872U
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- top dead
- tdc sensor
- signal pickup
- dead center
- pickup assembly
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Abstract
The utility model discloses a kind of signal pickup assemblies for detecting piston top dead center, belong to engine detection technique field, master is to solve how to detect the technical issues of piston accurately reaches top dead centre, the signal pickup assembly include TDCS TDC Sensor and be plugged in oil injector hole for installing the installation set of the TDCS TDC Sensor, the compatible stepped hole with the TDCS TDC Sensor periphery is equipped in the installation set, the probe of the TDCS TDC Sensor is passed down through the stepped hole and protrudes into cylinder-bore, the stepped hole upper end is equipped with the internal screw thread for locking the TDCS TDC Sensor, the stepped hole lower end is equipped with the pilot hole for guiding the probe.The utility model can accurately detect piston and reach top dead centre, to obtain the correct time that piston reaches top dead centre.
Description
Technical field
The utility model relates to engine detection technique fields, more specifically, it relates to a kind of detection piston top dead center
Signal pickup assembly.
Background technique
During diesel engine development experiments, by accurately controlling the opening of valve, open the time, and oil spout is accurately controlled
The injection time and distributive value of device, thus make engine in optimal working condition, and this is opened, opens time needs by piston
The time of top dead centre is reached to determine.This just must first know when piston reaches top dead centre.In the past generally by meter
Calculate crankshaft corner come determine piston top dead center indirectly, this top dead centre calculated with actually have error.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned deficiency for the prior art, and the purpose of this utility model is
A kind of signal pickup assembly that can accurately detect piston and reach the detection piston top dead center of top dead centre is provided.
The technical solution of the utility model is: a kind of signal pickup assembly detecting piston top dead center, including top dead centre pass
Sensor and be plugged in oil injector hole for installing the installation set of the TDCS TDC Sensor, be equipped in the installation set with
The peripheral compatible stepped hole of the TDCS TDC Sensor, the probe of the TDCS TDC Sensor are passed down through the stepped hole
And protrude into cylinder-bore, the stepped hole upper end is equipped with the internal screw thread for locking the TDCS TDC Sensor, the stepped hole
Lower end is equipped with the pilot hole for guiding the probe.
As a further improvement, further including the pressing plate being pressed on the installation set in cylinder head.
Further, the two sides of the installation set are respectively equipped with an indent, and one end of the pressing plate is equipped with and can be socketed
The U-type groove of the indent described in two sides, the other end are equipped with support portion, and the middle part of the pressing plate, which is equipped with, compresses screw hole.
Further, the installation set lower end is equipped with gasket seal.
Further, the installation set periphery is equipped with and the consistent ladder outer circle of fuel injector shape.
Further, the TDCS TDC Sensor is the sensor of model TDC-Sensor 428.
Beneficial effect
The utility model compared with prior art, has the advantage that are as follows: the TDCS TDC Sensor in the utility model passes through
Oil injector hole extend into cylinder-bore the height for directly detecting piston-top surface movement, can accurately detect piston and reach top dead centre, from
And the correct time that piston reaches top dead centre is obtained, guarantee that engine is in optimal working condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view in Fig. 1；
Fig. 3 is the structural schematic diagram of TDCS TDC Sensor and installation set assembly in the utility model；
Fig. 4 is the structural schematic diagram of installation set in the utility model.
Wherein: 1- TDCS TDC Sensor, 2- installation set, 3- stepped hole, 4- probe, 5- internal screw thread, 6- pilot hole, 7- cylinder
Lid, 8- pressing plate, 9- indent, 10- support portion, 11- gasket seal, 12- ladder outer circle, 13- vibration insulating ring, 14- annular groove, 15- are compressed
Bolt, 16- output interface, 17- piston.
Specific embodiment
Specific embodiment in reference to the accompanying drawing is described further the utility model.
Refering to fig. 1-4, a kind of signal pickup assembly detecting piston top dead center, including TDCS TDC Sensor 1 and be plugged in
In oil injector hole for installing the installation set 2 of TDCS TDC Sensor 1, be equipped in installation set 2 and the peripheral phase of TDCS TDC Sensor 1
The stepped hole 3 of adaptation, the probe 4 of TDCS TDC Sensor 1 are passed down through stepped hole 3 and protrude into cylinder-bore, and 3 upper end of stepped hole is set
There is the internal screw thread 5 of locking TDCS TDC Sensor 1,3 lower end of stepped hole is equipped with the pilot hole 6 of guidance probe 4.TDCS TDC Sensor 1
Output interface 16 be electrically connected external test equipment, external test equipment is used to record the output of TDCS TDC Sensor 1
Maximum value or minimum value and maximum value or minimum value corresponding time, and output piston top dead centre and reach top dead centre when
Between.
The present apparatus further includes the pressing plate 8 being pressed on installation set 2 in cylinder head 7, and the two sides of installation set 2 are respectively equipped with one
Indent 9, one end of pressing plate 8 are equipped with the U-type groove that can be socketed on two sides indent 9, and the other end is equipped with support portion 10, in pressing plate 8
Portion, which is equipped with, compresses screw hole, is the structure of triangular arrangement between the middle part and both ends of pressing plate 8, is passed through and compressed by hold-down bolt 15
Pressing plate 8 is locked in cylinder head 7 by screw hole.
In the present embodiment, 2 lower end of installation set is equipped with gasket seal 11, seals during piston 17 pumps
Gasket 11 can prevent the impurity such as dust or iron filings to be inhaled into cylinder, and gasket seal 11 can be made of copper material.Installation
Set 2 periphery be equipped with the consistent ladder outer circle 12 of fuel injector shape, can be convenient by installation set 2 be packed into oil injector hole in, and
2 accurate positioning of installation set.
In the present embodiment, the periphery of installation set 2 is equipped at least one vibration insulating ring 13, installation set 2 be equipped with for install every
The annular groove 14 of ring 13 is shaken, vibration insulating ring 13 is made of flexible material, and it can prevent the vibration of engine from damaging TDCS TDC Sensor 1,
Influence of the vibration of engine to 1 detection accuracy of TDCS TDC Sensor can be reduced simultaneously.
In the present embodiment, TDCS TDC Sensor 1 is the sensor of model TDC_Sensor428, TDC_Sensor428
Sensor is capacitance type sensor, and in actual use, probe 4 and the minimum range of 17 top surface of piston are about 0.5mm, 4 nothings of popping one's head in
Need contact piston 17 can be detected 17 top surface of piston movement height, can to avoid probe 4 with 17 hard contact of piston and cause
Damage.
TDCS TDC Sensor in the utility model is extend into cylinder-bore by oil injector hole directly detects piston-top surface
The height of movement can accurately detect piston and reach top dead centre, to obtain the correct time that piston reaches top dead centre, guarantee to start
Machine is in optimal working condition.
Above are merely preferred embodiments of the utility model, it should be pointed out that for those skilled in the art,
Under the premise of not departing from the utility model structure, several modifications and improvements can also be made, it is practical new that these all will not influence this
The effect and patent practicability that type is implemented.
Claims (6)
1. a kind of signal pickup assembly for detecting piston top dead center, it is characterised in that: including TDCS TDC Sensor (1) and be plugged in
In oil injector hole for installing the installation set (2) of the TDCS TDC Sensor (1), be equipped in the installation set (2) and institute
The compatible stepped hole (3) in TDCS TDC Sensor (1) periphery is stated, the probe (4) of the TDCS TDC Sensor (1) is passed down through institute
The stepped hole (3) stated simultaneously protrudes into cylinder-bore, and the stepped hole (3) upper end, which is equipped with, locks the TDCS TDC Sensor (1)
Internal screw thread (5), the stepped hole (3) lower end are equipped with the pilot hole (6) for guiding the probe (4).
2. it is according to claim 1 it is a kind of detect piston top dead center signal pickup assembly, it is characterised in that: further include by
The installation set (2) is pressed on the pressing plate (8) on cylinder head (7).
3. a kind of signal pickup assembly for detecting piston top dead center according to claim 2, it is characterised in that: the installation
The two sides of set (2) are respectively equipped with an indent (9), and one end of the pressing plate (8), which is equipped with, can be socketed on indent described in two sides (9)
U-type groove, the other end is equipped with support portion (10), and the middle part of the pressing plate (8), which is equipped with, compresses screw hole.
4. a kind of signal pickup assembly for detecting piston top dead center according to claim 1, it is characterised in that: the peace
Encapsulation (2) lower end is equipped with gasket seal (11).
5. a kind of signal pickup assembly for detecting piston top dead center according to claim 1, it is characterised in that: the peace
Encapsulation (2) periphery is equipped with and the consistent ladder outer circle (12) of fuel injector shape.
6. a kind of signal pickup assembly of detection piston top dead center, feature described in -5 any one exist according to claim 1
In: the TDCS TDC Sensor (1) is the sensor of model TDC_Sensor428.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920635935.5U CN209524872U (en) | 2019-05-06 | 2019-05-06 | A kind of signal pickup assembly detecting piston top dead center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920635935.5U CN209524872U (en) | 2019-05-06 | 2019-05-06 | A kind of signal pickup assembly detecting piston top dead center |
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| Publication Number | Publication Date |
|---|---|
| CN209524872U true CN209524872U (en) | 2019-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920635935.5U Active CN209524872U (en) | 2019-05-06 | 2019-05-06 | A kind of signal pickup assembly detecting piston top dead center |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990693A (en) * | 2019-05-06 | 2019-07-09 | 广西玉柴机器股份有限公司 | A kind of method and device detecting piston top dead center |
| CN113027608A (en) * | 2021-04-06 | 2021-06-25 | 华中科技大学 | Internal combustion engine piston top surface transient temperature remote measuring system and installation method thereof |
-
2019
- 2019-05-06 CN CN201920635935.5U patent/CN209524872U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990693A (en) * | 2019-05-06 | 2019-07-09 | 广西玉柴机器股份有限公司 | A kind of method and device detecting piston top dead center |
| CN113027608A (en) * | 2021-04-06 | 2021-06-25 | 华中科技大学 | Internal combustion engine piston top surface transient temperature remote measuring system and installation method thereof |
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