CN105021101B - The detection method of the top dead centre of the piston of engine - Google Patents
The detection method of the top dead centre of the piston of engine Download PDFInfo
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- CN105021101B CN105021101B CN201510487298.8A CN201510487298A CN105021101B CN 105021101 B CN105021101 B CN 105021101B CN 201510487298 A CN201510487298 A CN 201510487298A CN 105021101 B CN105021101 B CN 105021101B
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Abstract
The invention discloses a kind of detection method of the top dead centre of the piston of engine, detection method includes：The cylinder head cover for removing engine forwards the bent axle of motivation that the piston for being measured cylinder is made to be near top dead center, is measured the inlet valve of cylinder near top dead center and valve seating is closed by the work rotation steering wheel of engine；The valve spring and valve oil seal for removing the rocking arm of measured cylinder and any one valve of measured cylinder, make valve be fallen on the top surface of piston under its own gravity；The measuring staff head of dial gauge with gauge stand is vertically resisted against on the rear end face of valve stem so that the measuring staff and valve stem of dial gauge are on the same axis；Disk turns bent axle, and connecting rod is made to push piston and valve uplink, and to push dial gauge to rotate, dial gauge corresponds to piston-top surface position when showing maximum value is the top dead centre of piston；Reinstall valve oil seal, valve spring, rocking arm and cylinder head cover.The present invention accurately detects the top dead centre of engine piston, and improves working efficiency.
Description
Technical field
The present invention relates to engine art, more particularly to a kind of detection method of the top dead centre of the piston of engine.
Background technology
The detection of the top dead centre of engine piston can only be detected in the case where being fitted without engine cylinder cover, method be by
The measuring staff of dial gauge with gauge stand is vertically loaded on the surface of the piston top of engine, turns by the work rotation steering wheel of engine
Engine crankshaft makes piston stroking upward, and dial gauge is pushed to rotate, and the position of the piston-top surface corresponding to the maximum value of dial gauge is
The top dead centre of engine piston.
But when detection has installed the piston top dead center of engine complete machine of the parts such as cylinder cap, it must just remove cylinder
Lid, cylinder head cover, rocking arm, whole high-pressure oil pipe, water pump, air inlet pipe, exhaust pipe, outlet pipe, booster oil inlet and oil return pipe, bavin filter and
The a large amount of related fittings such as oil pipe, workload is very big, time-consuming and laborious, it is possible to cause damage, replacement of related fittings etc.
Hidden danger, while the labor intensity of dismounting is increased, and greatly reduce working efficiency.
Being disclosed in the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or imply that the information is constituted in any form.
Invention content
It is existing to overcome the purpose of the present invention is to provide a kind of detection method of the top dead centre of the piston of engine
Detection method working efficiency is low, and increases damage and replace the defect of the hidden danger of related fittings.
To achieve the above object, the present invention provides a kind of detection method of the top dead centre of the piston of engine, detection sides
Method includes：The cylinder head cover for removing engine forwards the bent axle of motivation to make to be measured cylinder by the work rotation steering wheel of engine
Piston is near top dead center, is measured the inlet valve of cylinder near top dead center and valve seating is closed；Remove shaking for measured cylinder
The valve spring and valve oil seal of any one valve of arm and measured cylinder, make valve fall on the top surface of piston under its own gravity
On；The measuring staff head of dial gauge with gauge stand is vertically resisted against on the rear end face of valve stem so that the measuring staff and valve of dial gauge
Bar is on the same axis；Disk turns bent axle, and connecting rod is made to push piston and valve uplink, and to push dial gauge to rotate, dial gauge is aobvious
The position that piston-top surface is corresponded to when showing maximum value is the top dead centre of piston；Reinstall valve oil seal, valve spring, rocking arm with
And cylinder head cover.
Compared with prior art, the present invention has the advantages that：
The present invention is equivalent using the design feature of engine and the testing principle of engine tope center, engine air valve rod
In the measuring rod of the dial gauge of lengthening, it need to only remove rocking arm, valve spring, valve oil seal and can be achieved with quick, accurate detection hair
The top dead centre of motivation piston, therefore can the accurate of piston top dead center directly be carried out to the engine complete machine for installing the parts such as cylinder cap
Detection avoids disassembling and assembling engine cylinder cap, whole high-pressure oil pipes, water pump, air inlet pipe, exhaust pipe, outlet pipe, booster oil inlet and oil return
The a large amount of related fittings such as pipe, bavin filter and oil pipe, reduce the labor intensity of dismounting, and improve working efficiency, time saving province
Power, while avoiding the hidden danger of quality such as the damage of related fittings, replacement.
Description of the drawings
Fig. 1 is the flow chart of the detection method of the top dead centre of the piston of engine according to the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific implementation mode of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield range is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As shown in Figure 1, including according to the detection method of the top dead centre of the piston of the engine of the specific embodiment of the invention
Following steps：
S1：The cylinder head cover of removal of engine forwards the bent axle of motivation to make to be measured by the work rotation steering wheel of engine
The piston of cylinder is near top dead center, to prevent valve after removing valve spring in following steps S2 from falling into cylinder, ensures gas
The rear end face of door rod exposes outside conduit, facilitates subsequent operation.
Specifically, the judgment method that piston is near top dead center is：Turn song by the work rotation steering wheel of engine
Axis, be measured cylinder inlet valve will be opened (i.e. inlet valve and valve seating are closed, almost without valve clearance) when, measured cylinder
Piston approaches top dead center.
S2：The valve spring and valve oil seal of the rocking arm of measured cylinder and any one valve of measured cylinder are removed, at this time
The valve is fallen under self gravitation effect on the top surface of piston without valve spring, the constraint limitation of valve oil seal.
S3：The measuring staff head of dial gauge with gauge stand is vertically resisted against to the rear end face of valve stem as possible, makes valve stem and hundred
Divide the measuring staff of table on the same axis.
S4：Forward the bent axle of motivation, bent axle that connecting rod is driven to push piston and valve by the work rotation steering wheel of engine
Uplink, and then dial gauge rotation is pushed, the position of the piston-top surface in motion process corresponding to the maximum value of dial gauge is to live
The top dead centre of plug.If piston has crossed top dead centre in operating process, need anti-backlash to appropriate location, then detection is again
Can, avoid valve from falling into cylinder.
S5：It reinstalls valve oil seal, valve spring, rocking arm and cylinder head cover and (measures other cylinders, cylinder head cover if necessary
It wouldn't reinstall).
If necessary to detect other cylinders, above-mentioned step S1-S5 is repeated.
In the detection method, the valve stem being utilized is equal to the measuring rod of the dial gauge of lengthening, and since engine is set
There are piston compression clearance, valve to have deflection in meter upper cylinder, and valve spring has been removed, and is utilized in entire detection process
Valve be just open always, therefore be measured cylinder in without pressure act on, testing conditions with installation cylinder cap before detection
Condition is almost the same, does not interfere with the accuracy of testing result.
The present invention is equivalent using the design feature of engine and the testing principle of engine tope center, engine air valve rod
In the measuring rod of the dial gauge of lengthening, it need to only remove rocking arm, valve spring, valve oil seal and can be achieved with quick, accurate detection hair
The top dead centre of motivation piston, therefore can the accurate of piston top dead center directly be carried out to the engine complete machine for installing the parts such as cylinder cap
Detection avoids disassembling and assembling engine cylinder cap, whole high-pressure oil pipes, water pump, air inlet pipe, exhaust pipe, outlet pipe, booster oil inlet and oil return
The a large amount of related fittings such as pipe, bavin filter and oil pipe, reduce the labor intensity of dismounting, and improve working efficiency, time saving province
Power, while avoiding the hidden danger of quality such as the damage of related fittings, replacement.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the present invention and its actually answering
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (1)
1. a kind of detection method of the top dead centre of the piston of engine, which is characterized in that the detection method includes：
The cylinder head cover for removing engine forwards the bent axle of motivation to make the piston for being measured cylinder by the work rotation steering wheel of engine
In near top dead center, inlet valve and valve seating that cylinder is measured described in the near top dead center are closed；
The valve spring and valve oil seal for removing the rocking arm of the measured cylinder and any one valve of the measured cylinder, make institute
Valve is stated to fall under its own gravity on the top surface of the piston；
The measuring staff head of dial gauge with gauge stand is vertically resisted against on the rear end face of valve stem so that the measuring staff of the dial gauge with
The valve stem is on the same axis；
Disk turns the bent axle, and connecting rod is made to push the piston and the valve uplink, described to push the dial gauge to rotate
Dial gauge corresponds to piston-top surface position when showing maximum value is the top dead centre of the piston；
Reinstall the valve oil seal, the valve spring, the rocking arm and the cylinder head cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510487298.8A CN105021101B (en) | 2015-08-10 | 2015-08-10 | The detection method of the top dead centre of the piston of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510487298.8A CN105021101B (en) | 2015-08-10 | 2015-08-10 | The detection method of the top dead centre of the piston of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105021101A CN105021101A (en) | 2015-11-04 |
| CN105021101B true CN105021101B (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510487298.8A Active CN105021101B (en) | 2015-08-10 | 2015-08-10 | The detection method of the top dead centre of the piston of engine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759617B (en) * | 2018-05-25 | 2020-07-24 | 永康市小菜丫厨具有限公司 | Engine piston cylinder discharge amount detection device and adjustment method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373739Y (en) * | 2009-03-13 | 2009-12-30 | 南车戚墅堰机车有限公司 | Diesel engine top dead center adjusting device |
| CN201476731U (en) * | 2009-09-01 | 2010-05-19 | 广西玉柴机器股份有限公司 | Upper dead point measurement tool of engine piston |
| CN201561856U (en) * | 2009-12-15 | 2010-08-25 | 吉林大学 | All-condition measuring system of position of piston and phases of engine |
| CN101858722A (en) * | 2010-05-25 | 2010-10-13 | 中国兵器工业集团第七0研究所 | Detection device of working top dead center of diesel engine |
| CN102243071A (en) * | 2011-05-05 | 2011-11-16 | 天津大学 | Piston top dead center automatic detecting and positioning device of reciprocating machinery |
| CN202836422U (en) * | 2012-09-29 | 2013-03-27 | 徐州徐工斗山发动机有限公司 | Measuring device for engine cylinder top dead center |
| JP5716427B2 (en) * | 2011-02-03 | 2015-05-13 | 株式会社東京精密 | Roundness measuring device and method of correcting misalignment |
-
2015
- 2015-08-10 CN CN201510487298.8A patent/CN105021101B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373739Y (en) * | 2009-03-13 | 2009-12-30 | 南车戚墅堰机车有限公司 | Diesel engine top dead center adjusting device |
| CN201476731U (en) * | 2009-09-01 | 2010-05-19 | 广西玉柴机器股份有限公司 | Upper dead point measurement tool of engine piston |
| CN201561856U (en) * | 2009-12-15 | 2010-08-25 | 吉林大学 | All-condition measuring system of position of piston and phases of engine |
| CN101858722A (en) * | 2010-05-25 | 2010-10-13 | 中国兵器工业集团第七0研究所 | Detection device of working top dead center of diesel engine |
| JP5716427B2 (en) * | 2011-02-03 | 2015-05-13 | 株式会社東京精密 | Roundness measuring device and method of correcting misalignment |
| CN102243071A (en) * | 2011-05-05 | 2011-11-16 | 天津大学 | Piston top dead center automatic detecting and positioning device of reciprocating machinery |
| CN202836422U (en) * | 2012-09-29 | 2013-03-27 | 徐州徐工斗山发动机有限公司 | Measuring device for engine cylinder top dead center |
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| Publication number | Publication date |
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| CN105021101A (en) | 2015-11-04 |
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