CN105444654A - Valve-timing phase detection method for engine - Google Patents
Valve-timing phase detection method for engine Download PDFInfo
- Publication number
- CN105444654A CN105444654A CN201510915761.4A CN201510915761A CN105444654A CN 105444654 A CN105444654 A CN 105444654A CN 201510915761 A CN201510915761 A CN 201510915761A CN 105444654 A CN105444654 A CN 105444654A
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- Prior art keywords
- engine
- valve
- belt pulley
- cylinder
- detected cylinder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses a valve-timing phase detection method for an engine. The valve-timing phase detection method for an engine comprises the steps: identifying the position of a belt pulley corresponding to a top dead centre of a piston of each cylinder for an engine; adjusting the valve clearance of each cylinder for the engine; abutting a measuring rod head of an indicating gauge with a gauge base to a rear end surface of a spring-leaf retainer of a detected cylinder; steering a crankshaft of the engine according to the working rotation direction of the engine to rotate the indicating gauge while a rope is used to measure the circumferential length between the location for alignment of a pointer of the belt pulley and the identification position of the detected cylinder on the belt pulley, and acquiring the early opening angle of the valve of the detected cylinder by means of comparison of the circumferential length with the scale segment on the belt pulley; and continuously steering the crankshaft according to the working rotation direction of the engine to stop rotation of the indicating gauge exactly during the closure process of the valve of the detected cylinder, and obtaining the late closing angle of the valve of the detected cylinder through measurement according to the above steps. The valve-timing phase detection method for an engine is simple in drawing materials, and can perform detection work for valve-timing phase at any time, thus being high in efficiency.
Description
Technical field
The present invention relates to engine art, particularly a kind of detection method of port timing of engine.
Background technology
The detection of the port timing of engine needs to make in advance one, and isometric and decile is decorated with the paper slip of 360 ° of angle grooves with engine crankshaft belt pulley excircle, making this paper slip needs the drawing first consulting engine crankshaft belt pulley to calculate its outer circumference, and computing machine will be used, printer apparatus prints paper slip.Method is: on the excircle of engine crankshaft belt pulley, paste the paper slip being decorated with 360 ° of angle grooves, valve clearance is adjusted by the testing requirement of port timing, the dial gauge measuring staff head of band gauge stand is loaded on above the end face of inlet valve (or exhaust valve) spring-leaf retainer detecting cylinder, utilizes paper slip to coordinate dial gauge measure the angle of advanced opening degree of the port timing of the inlet valve (or exhaust valve) detecting cylinder respectively and close angle late.
But, the detection of the port timing of engine must make the paper slip that and decile isometric with the crank pulley excircle of engine is decorated with 360 ° of angle grooves in advance, make above-mentioned paper slip need the time and engine crankshaft belt pulley drawing must be had, computing machine, the condition of printer and application power, port timing testing result reading is loaded down with trivial details unordered, require testing staff to understand and confirm on each cylinder piston, angle value corresponding on engine crankshaft belt pulley during lower dead center, slightly do not note being easy to make mistakes, require that the level of skill of testing staff is higher, be subject to the above restrictions, need can not detect whenever and wherever possible when detecting port timing at once, affect work efficiency.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of detection method of port timing of engine, thus the detection overcoming existing port timing is more loaded down with trivial details, requires the shortcoming that the level of skill of testing staff is higher.
For achieving the above object, the invention provides a kind of detection method of port timing of engine, comprise the following steps: step one, the top dead center position that when piston that the periphery of the belt pulley of the bent axle of engine identifies each cylinder of engine is positioned at top dead centre, the pointer of belt pulley is corresponding; Step 2, adjusts the valve clearance of each cylinder of described engine; Step 3, be resisted against on the rear end face of the spring-leaf retainer of the valve of detected cylinder by the measuring staff head of the dial gauge of band gauge stand, this dial gauge is provided with precompressed range; Step 4, the bent axle rotating bearing circle forwarding motivation by the work of described engine makes described dial gauge just rotate, the position now aligned with the pointer that rope measures belt pulley on described belt pulley to detected cylinder top dead center position between the first circumferential length, contrast the angle of advanced opening degree of the valve to obtain described detected cylinder according to the angle index section on this first circumferential length and belt pulley; Step 5, continue to rotate bearing circle by the work of described engine and turn described bent axle, the valve of described detected cylinder dial gauge described in closing process is just stopped operating, the position now aligned with the pointer that rope measures belt pulley on described belt pulley to detected cylinder top dead center position between the second circumferential length, what contrast valve to obtain described detected cylinder according to the angle index section on this second circumferential length and described belt pulley closes angle late.
Preferably, in technique scheme, if dial gauge measuring object is the exhaust valve of described detected cylinder in step 4, described in gained, angle of advanced opening degree need subtract 180 °.
Preferably, in technique scheme, if dial gauge measuring object is the inlet valve of described detected cylinder in step 5, closes angle described in gained late and need subtract 180 °.
Preferably, in technique scheme, valve clearance described in step 2 is 1mm.
Compared with prior art, the present invention has following beneficial effect:
The morning that the present invention utilizes the angle index section in the rope length and belt pulley measured to compare and can read the port timing of engine fast opens and closes angle late, avoid testing staff on each cylinder piston, angle value on crank pulley corresponding during lower dead center confirms the hidden danger being forbidden to cause testing result reading to make mistakes, and avoid and need use engine crankshaft belt pulley drawing, computing machine, printer apparatus could realize the condition restriction detected, and detection method is simple, accurately, understandable, easy to remember, require that the level of skill of testing staff is not high, drawing can not be consulted, use computing machine, the general personnel of printer can both carry out detection operation.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the detection method of port timing according to engine of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole instructions and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or ingredient, and do not get rid of other element or other ingredient.
Fig. 1 shows the schematic flow sheet of the detection method of the port timing of engine according to the preferred embodiment of the present invention.As shown in Figure 1, the method comprises:
Step one, the top dead center position that when piston that the periphery of the belt pulley of the bent axle of engine identifies each cylinder of engine is positioned at top dead centre, the pointer of belt pulley is corresponding;
Particularly, the periphery of the belt pulley of the bent axle of engine is rule in the other direction by the rotation of engine operation from 0 scale on belt pulley and identifies the job order position of each cylinder of engine, namely when the piston of each cylinder of engine is positioned at top dead centre, belt pulley pointer correspondence position over pulleys carried, is top dead center position hereinafter referred to as this position.
Step 2, adjusts the valve clearance of each cylinder of engine by the technical requirement of the detection of gas distribution phase of engine.
Particularly, by the detection of gas distribution phase of engine technical requirement adjustment inlet valve gap and emission valve clearance be 1mm.
Step 3, be resisted against on the rear end face of the inlet valve of detected cylinder or the spring-leaf retainer of exhaust valve by the measuring staff head of the dial gauge of band gauge stand, this dial gauge is preferably provided with suitable precompressed range.
Step 4, the bent axle rotating bearing circle forwarding motivation by the work of engine makes the inlet valve of detection cylinder or exhaust valve just open, namely dial gauge just rotates, the first circumferential length between the position now aligned with the pointer that rope measures belt pulley over pulleys carried to the top dead center position corresponding to top dead centre of the piston of detected cylinder, contrasts to obtain the angle of advanced opening degree of detected cylinder intake valve relative to the port timing of top dead centre or the relative lower dead center of exhaust valve according to this first circumferential length and the scale section on belt pulley;
In this step, existing belt pulley is generally provided with 0 scale marker position, and be positioned at 0 scale both sides there is one section of angle mark scale, the circumferential length measured with rope and this section of angle identify scale and contrast, if rope circumferential length is greater than this section of angle mark scale, namely by repeatedly contrasting the angle drawing circumferential length segmentation, then be added and draw angle of advanced opening degree, wherein, if dial gauge measuring object is the exhaust valve of detected cylinder, gained angle of advanced opening degree need subtract 180 °.
Step 5, continuing to turn bent axle by the work rotation bearing circle of described engine makes the inlet valve of detected cylinder or exhaust valve just close completely, namely in inlet valve or exhaust valve closing process, dial gauge just stops operating, the second circumferential length between the position now aligned with the pointer that rope measures belt pulley over pulleys carried to the top dead center position corresponding to top dead centre of the piston of detected cylinder, according to this second circumferential length and the scale section on belt pulley contrast with the inlet valve obtaining detected cylinder relative to lower dead center or the relative top dead centre of exhaust valve port timing close angle late.
In this step, its angle measurement method is consistent with step 4, and if dial gauge measuring object is the inlet valve of detected cylinder, gained closes angle late need subtract 180 °.
According to the method, capable of circulationly detect the angle of advanced opening degree of the port timing of other cylinder and close angle late.
To sum up, the present invention utilizes the principle of work of engine, the definition of dependency structure and gas distribution phase of engine and the Cleaning Principle of gas distribution phase of engine, with the angle value of 0 scale both sides on a rope and detected engine crankshaft belt pulley as detection aid, the detection of port timing can be carried out, method is simple, accurately, understandable, easy to remember, can detect fast timely whenever and wherever possible, avoid testing staff on each cylinder piston, angle value on crank pulley corresponding during lower dead center confirms the hidden danger being forbidden to cause testing result reading to make mistakes, the detection method of this invention need not be consulted engine crankshaft belt pulley drawing and be made the paper slip that and decile isometric with engine crankshaft belt pulley excircle is decorated with 360 ° of angle grooves, avoid and wait for the time of the above-mentioned paper slip of making and engine crankshaft belt pulley drawing will be used, computing machine, printer apparatus could realize the condition restriction detected, increase work efficiency, require that the level of skill of testing staff is not high simultaneously, drawing can not be consulted, use computing machine, the general personnel of printer can both carry out detection operation.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (4)
1. a detection method for the port timing of engine, is characterized in that, comprises the following steps:
Step one, the top dead center position that when piston that the periphery of the belt pulley of the bent axle of engine identifies each cylinder of engine is positioned at top dead centre, the pointer of belt pulley is corresponding;
Step 2, adjusts the valve clearance of each cylinder of described engine;
Step 3, be resisted against on the rear end face of the spring-leaf retainer of the valve of detected cylinder by the measuring staff head of the dial gauge of band gauge stand, this dial gauge is provided with precompressed range;
Step 4, the bent axle rotating bearing circle forwarding motivation by the work of described engine makes described dial gauge just rotate, the position now aligned with the pointer that rope measures belt pulley on described belt pulley to detected cylinder top dead center position between the first circumferential length, contrast the angle of advanced opening degree of the valve to obtain described detected cylinder according to the angle index section on this first circumferential length and belt pulley;
Step 5, continue to rotate bearing circle by the work of described engine and turn described bent axle, the valve of described detected cylinder dial gauge described in closing process is just stopped operating, the position now aligned with the pointer that rope measures belt pulley on described belt pulley to detected cylinder top dead center position between the second circumferential length, what contrast valve to obtain described detected cylinder according to the angle index section on this second circumferential length and described belt pulley closes angle late.
2. the detection method of the port timing of engine according to claim 1, is characterized in that, if described dial gauge measuring object is the exhaust valve of detected cylinder in step 4, described in gained, angle of advanced opening degree need subtract 180 °.
3. the detection method of the port timing of engine according to claim 1, is characterized in that, if described dial gauge measuring object is the inlet valve of detected cylinder in step 5, closes angle late and need subtract 180 ° described in gained.
4. the detection method of the port timing of engine according to claim 1, is characterized in that, valve clearance described in step 2 is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915761.4A CN105444654A (en) | 2015-12-10 | 2015-12-10 | Valve-timing phase detection method for engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915761.4A CN105444654A (en) | 2015-12-10 | 2015-12-10 | Valve-timing phase detection method for engine |
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| Publication Number | Publication Date |
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| CN105444654A true CN105444654A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510915761.4A Pending CN105444654A (en) | 2015-12-10 | 2015-12-10 | Valve-timing phase detection method for engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279856A (en) * | 2021-07-02 | 2021-08-20 | 宁波市鄞州德来特技术有限公司 | Engine valve timing phase measuring method |
| CN113903157A (en) * | 2021-09-29 | 2022-01-07 | 潍柴动力股份有限公司 | Gas distribution phase monitoring method and device, vehicle and storage medium |
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| CN103527280A (en) * | 2013-10-15 | 2014-01-22 | 潍柴重机股份有限公司 | Method for controlling valve timing of diesel engine |
| CN204286801U (en) * | 2014-12-19 | 2015-04-22 | 北汽福田汽车股份有限公司 | Gas distribution phase of engine measurement mechanism |
| CN104634230A (en) * | 2015-02-12 | 2015-05-20 | 广西玉柴机器股份有限公司 | Aided detection device and detection method for valve timing of diesel engine |
-
2015
- 2015-12-10 CN CN201510915761.4A patent/CN105444654A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| US5827954A (en) * | 1997-05-15 | 1998-10-27 | Noland; E. Bruce | Camshaft degreeing platform |
| CN103527280A (en) * | 2013-10-15 | 2014-01-22 | 潍柴重机股份有限公司 | Method for controlling valve timing of diesel engine |
| CN204286801U (en) * | 2014-12-19 | 2015-04-22 | 北汽福田汽车股份有限公司 | Gas distribution phase of engine measurement mechanism |
| CN104634230A (en) * | 2015-02-12 | 2015-05-20 | 广西玉柴机器股份有限公司 | Aided detection device and detection method for valve timing of diesel engine |
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| 伊晓浏等: "《汽车构造与装调 上册》", 28 February 2015, 广东科技出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279856A (en) * | 2021-07-02 | 2021-08-20 | 宁波市鄞州德来特技术有限公司 | Engine valve timing phase measuring method |
| CN113903157A (en) * | 2021-09-29 | 2022-01-07 | 潍柴动力股份有限公司 | Gas distribution phase monitoring method and device, vehicle and storage medium |
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Application publication date: 20160330 |