CN108060977B - Non-deviation engine ignition timing device and ignition timing method thereof - Google Patents
Non-deviation engine ignition timing device and ignition timing method thereof Download PDFInfo
- Publication number
- CN108060977B CN108060977B CN201810062828.8A CN201810062828A CN108060977B CN 108060977 B CN108060977 B CN 108060977B CN 201810062828 A CN201810062828 A CN 201810062828A CN 108060977 B CN108060977 B CN 108060977B
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- CN
- China
- Prior art keywords
- connecting rod
- rod assembly
- piston
- magneto rotor
- crankshaft
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims description 3
- 208000010392 Bone Fractures Diseases 0.000 abstract description 4
- 206010017076 Fracture Diseases 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 208000013201 Stress fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/087—Safety, indicating, or supervising devices determining top dead centre or ignition-timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P1/00—Installations having electric ignition energy generated by magneto- or dynamo- electric generators without subsequent storage
- F02P1/005—Construction and fastening of elements of magnetos other than the magnetic circuit and the windings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention discloses a non-deviation engine ignition timing device which comprises a crank case, a crank connecting rod assembly, an engine mounting bracket and a magneto rotor, wherein the crank connecting rod assembly is positioned in the crank case, a crank output shaft with an outer conical surface is arranged on the crank connecting rod assembly, and an inner conical surface matched with the outer conical surface of the crank output shaft is arranged at a central hole of the magneto rotor. According to the invention, the crankshaft output shaft is free of the half key and the magneto rotor is free of the rectangular groove, and the area of the taper joint surface of the inner taper surface of the central hole of the magneto rotor and the outer taper surface of the crankshaft output shaft of the crankshaft connecting rod assembly is increased, so that the connection is more firm, the part processing procedures are reduced, the structure is simple, and meanwhile, the fracture risk of the half key and the stress concentration fracture risk of the sharp corner of the rectangular groove are reduced, so that the device is suitable for part assembly of a high-torque engine.
Description
Technical Field
The invention relates to the field of engines, in particular to a non-deviation engine ignition timing device and an ignition timing method thereof.
Background
In the traditional positioning mode of the magneto in the market at present, a semicircular key is arranged on a crankshaft, a rectangular groove is arranged on a flywheel, the rectangular groove is aligned to the semicircular key to be installed when the flywheel is assembled, the fatigue fracture risk of parts caused by stress concentration at sharp corners of the semicircular key and the rectangular groove exists, and meanwhile, the area of a taper joint surface of the crankshaft and the flywheel is small, so that the magneto is not suitable for a large-torque engine; meanwhile, the ignition timing mode of the engine is that an observation window is arranged on the magneto cover, the magneto cover is required to be assembled and positioned in timing mode by means of marking points on the flywheel, and the upper dead center positioning deviation, namely the ignition timing positioning deviation exists due to manufacturing errors and human observation errors of the flywheel or the magneto cover.
Therefore, there is a need to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to: a first object of the present invention is to provide a non-deviation engine ignition timing device having a simple structure, a rotor convenient to install, and a large contact area with a crankshaft.
A second object of the present invention is to provide an ignition timing method of the engine ignition timing apparatus.
The technical scheme is as follows: in order to achieve the above purpose, the invention discloses a non-deviation engine ignition timing device, which comprises a crankcase, a crankshaft connecting rod assembly, an engine mounting bracket and a magneto rotor, wherein the crankshaft connecting rod assembly is positioned in the crankcase, the crankshaft connecting rod assembly is provided with a crankshaft output shaft with an outer conical surface, and the central hole of the magneto rotor is provided with an inner conical surface matched with the outer conical surface of the crankshaft output shaft.
The external conical surface of the crankshaft output shaft and the conical surface of the internal conical surface of the magneto rotor are consistent in taper, the tolerance of the axial dimension A of the crankshaft output shaft taking the conical surface diameter of 20mm as a reference and the axial dimension B of the magneto rotor taking the conical surface diameter of 20mm as a reference is +/-0.15 mm, the conical surface roughness is less than 1.6, and the coloring rate is more than 95%.
Preferably, the outer ring of the magneto rotor is uniformly distributed with a plurality of crankshaft signal teeth, wherein one crankshaft signal tooth is used as an ignition timing marking tooth.
Further, the number of the crank signal teeth is 58, and the 58 crank signal teeth are formed by equally dividing the outer ring of the magneto rotor into 60 teeth and removing 2 consecutive teeth.
Further, the first tooth at the notch with 2 consecutive teeth removed is marked as the first tooth, and the 20 th tooth counted counterclockwise from the first tooth is used as the ignition timing marking tooth.
Preferably, 2 triggers are arranged on the engine mounting bracket at intervals, and the center contact position of the left trigger is marked.
The invention relates to an ignition timing method of an unbiased engine ignition timing device, which comprises the following steps:
(1) Firstly, cleaning an outer conical surface of an output shaft of a crankshaft and an inner conical surface of a magneto rotor before assembly;
(2) Marking from the first tooth to the 20 th tooth from the notch of the outer ring of the magneto rotor, and taking the mark as an ignition timing mark tooth;
(3) Firstly, a crankshaft connecting rod assembly is installed in a crankcase, then an engine mounting bracket provided with a trigger is assembled with the crankcase, and then a left piston, a piston ring, a piston pin and a left cylinder block are installed;
(4) The piston protrusion measuring tool is fixed on the joint surface of the left cylinder body, the crankshaft connecting rod assembly is rotated, meanwhile, the display number of the piston protrusion measuring tool is observed, the highest point of the piston protrusion is found out, and a connecting rod at the other side of the crankshaft connecting rod assembly is fixed by using a tuning fork and a plug piece, so that the crankshaft connecting rod assembly is fixed;
(5) Assembling an inner conical surface at a central hole of a magneto rotor with an outer conical surface of a crankshaft output shaft of a crankshaft connecting rod assembly, and enabling a 20 th tooth of the magneto rotor to be opposite to a central contact position of a left trigger;
(6) And (3) simultaneously adopting a fastening nut to fix and screw the compacting magneto rotor, taking down the piston protrusion measuring tool, the tuning fork and the plug piece, and completing the positioning of the ignition timing of the engine.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable advantages: (1) Firstly, the crankshaft output shaft is free of the half key and the magneto rotor is free of the rectangular groove, the area of the taper joint surface of the inner taper surface of the central hole of the magneto rotor and the outer taper surface of the crankshaft output shaft of the crankshaft connecting rod assembly is increased, so that the connection is more firm, the part processing procedures are reduced, the structure is simple, the fracture risk of the half key and the stress concentration fracture risk of the sharp corner of the rectangular groove are reduced, and the device is suitable for part assembly of a high-torque engine; (2) Secondly, timing marks are carried out on the magneto rotor and the left trigger in advance, so that the assembly procedure is reduced, and the phenomenon that the positioning accuracy is affected due to artificial observation errors in the assembly process can be effectively avoided; (3) The invention also discloses a method for positioning the upper dead point by directly using the piston protrusion measuring tool, which is free from indirect positioning by means of the magneto rotor and the magneto shell, has accurate and reliable positioning, and can not influence the positioning precision due to the manufacturing tolerance and human observation error of the magneto rotor or the magneto shell.
Drawings
FIG. 1 is a schematic illustration of a crankshaft connecting rod assembly of the present invention;
FIG. 2 is a schematic diagram of a magneto rotor according to the present invention;
FIG. 3 is a cross-sectional view of a magneto rotor according to the present invention;
FIG. 4 is a schematic illustration of the assembly of the crankshaft connecting rod assembly of the present invention into a crankcase;
FIG. 5 is a schematic illustration of the installation of a piston protrusion gauge according to the present invention;
FIG. 6 is a schematic diagram of engine spark timing positioning in accordance with the present invention;
FIG. 7 is an exploded view of the present invention;
FIG. 8 is a schematic diagram of a piston protrusion gauge according to the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
As shown in fig. 7, the unbiased engine ignition timing apparatus of the present invention includes a crank case 1, a crank connecting rod assembly 2, an engine mounting bracket 3, a magneto rotor 4, a trigger 8, a left piston 9, a piston ring 10, a piston pin 11, a left cylinder block 12, a piston protrusion measuring tool 13, a tuning fork 15, and a plug 16. The crankshaft connecting rod assembly 2 of the present invention is located in the crankcase 1, and the magneto rotor 4 is mounted on the crankshaft connecting rod assembly 2. The crankshaft connecting rod assembly 2 is provided with a crankshaft output shaft 5 with an outer conical surface, and an inner conical surface matched with the outer conical surface of the crankshaft output shaft 5 is arranged at the central hole of the magneto rotor 4. In the invention, 2 triggers 8 are arranged on the engine mounting bracket 3 at intervals, and the center contact position of the left trigger 8 is marked. As shown in fig. 8, the piston protrusion measuring tool 13 of the present invention is composed of a commercially available gauge head 1301 and a measuring tool holder 1302, wherein the gauge head 1301 is fixed to the measuring tool holder 1302 by bolts, and the measuring tool holder 1302 is inserted into a threaded hole of the left cylinder block 12 by two positioning pins for positioning.
As shown in fig. 1 and 3, the taper of the outer conical surface of the crankshaft output shaft 5 is identical to the taper of the inner conical surface of the magneto rotor 4, the tolerance of the axial dimension a of the crankshaft output shaft 5 based on the 20mm conical surface diameter position and the axial dimension B of the magneto rotor 4 based on the 20mm conical surface diameter position is + -0.15 mm, the conical surface roughness is less than 1.6, and the coloring rate is more than 95%.
As shown in fig. 2, the outer ring of the magneto rotor 4 is uniformly distributed with a plurality of crank signal teeth, the number of the crank signal teeth is 58, and the 58 crank signal teeth are formed by uniformly dividing the outer ring of the magneto rotor into 60 teeth and removing 2 continuous teeth. The present invention eliminates the first tooth at the notch of 2 consecutive teeth, designated as first tooth 7, counting counterclockwise from the first tooth to the 20 th tooth as ignition timing marking tooth 6.
The invention relates to an ignition timing method of an unbiased engine ignition timing device, which comprises the following steps:
(1) Firstly, cleaning the outer conical surface of the crankshaft output shaft 5 and the inner conical surface of the magneto rotor 4 before assembly;
(2) Marking from the first tooth to the 20 th tooth from the notch of the outer ring of the magneto rotor 4 to be used as an ignition timing marking tooth 6;
(3) Firstly, the crankshaft connecting rod assembly 2 is installed in the crankcase 1, then the engine mounting bracket 3 with the trigger 8 is assembled with the crankcase 1, and then the left piston 9, the piston ring 10, the piston pin 11 and the left cylinder block 12 are installed, as shown in fig. 4;
(4) Fixing the piston protrusion measuring tool 13 on the left cylinder block joint surface 14, rotating the crankshaft connecting rod assembly 2, simultaneously taking care of observing the display number of the piston protrusion measuring tool 13, finding out the highest point of the piston protrusion, and fixing the connecting rod at the other side of the crankshaft connecting rod assembly 2 by using the tuning fork 15 and the plug 16, so that the crankshaft connecting rod assembly 2 is fixed, as shown in fig. 5;
(5) Assembling the inner conical surface at the central hole of the magneto rotor 4 with the outer conical surface of the crankshaft output shaft 5 of the crankshaft connecting rod assembly 2, and enabling the 20 th tooth of the magneto rotor 4 to be opposite to the central contact position of the left trigger 8, as shown in fig. 6;
(6) And the compacting magneto rotor 4 is simultaneously fixed and screwed by adopting a fastening nut, the piston protrusion measuring tool 13, the tuning fork 15 and the plug 16 are taken down, and the ignition timing positioning of the engine is completed.
Claims (1)
1. A method of unbiased engine ignition timing, characterized by:
The device comprises a crank case (1), a crank shaft connecting rod assembly (2), an engine mounting bracket (3), a magneto rotor (4), a trigger (8), a left piston (9), a piston ring (10), a piston pin (11), a left cylinder block (12), a piston protrusion measuring tool (13), a tuning fork (15) and a plug piece (16);
(2) Firstly, cleaning an outer conical surface of a crankshaft output shaft (5) and an inner conical surface of a magneto rotor (4) before assembly;
(3) Marking from the first tooth to the 20 th tooth from the notch of the outer ring of the magneto rotor (4) in a counter-clockwise manner, and taking the marking as an ignition timing marking tooth (6);
(4) Firstly, a crankshaft connecting rod assembly (2) is installed in a crank case (1), then an engine mounting bracket (3) provided with a trigger (8) is assembled with the crank case (1), and then a left piston (9), a piston ring (10), a piston pin (11) and a left cylinder block (12) are installed;
(5) Fixing a piston protrusion measuring tool (13) on a left cylinder body joint surface (14), rotating the crankshaft connecting rod assembly (2), simultaneously observing the display number of the piston protrusion measuring tool (13), finding out the highest point of the piston protrusion, and fixing a connecting rod at the other side of the crankshaft connecting rod assembly (2) by using a tuning fork (15) and a plug piece (16), so that the crankshaft connecting rod assembly (2) is fixed;
(6) Assembling an inner conical surface at the central hole of the magneto rotor (4) with an outer conical surface of a crankshaft output shaft (5) of the crankshaft connecting rod assembly (2), and enabling the 20 th tooth of the magneto rotor (4) to be opposite to the central contact position of the left trigger (8);
(7) And the compressing magneto rotor (4) is simultaneously fixed and screwed by adopting a fastening nut, and the piston protrusion measuring tool (13), the tuning fork (15) and the plug piece (16) are taken down, so that the ignition timing positioning of the engine is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062828.8A CN108060977B (en) | 2018-01-23 | 2018-01-23 | Non-deviation engine ignition timing device and ignition timing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062828.8A CN108060977B (en) | 2018-01-23 | 2018-01-23 | Non-deviation engine ignition timing device and ignition timing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108060977A CN108060977A (en) | 2018-05-22 |
| CN108060977B true CN108060977B (en) | 2024-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810062828.8A Active CN108060977B (en) | 2018-01-23 | 2018-01-23 | Non-deviation engine ignition timing device and ignition timing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108060977B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185537A (en) * | 2019-07-03 | 2019-08-30 | 吕国良 | Do work mechanism, rotor internal-combustion engine, vehicle, aircraft and ship |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0932620A (en) * | 1995-07-20 | 1997-02-04 | Toyota Motor Corp | Crank angle detecting device of internal combustion engine |
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| JP2004236382A (en) * | 2003-01-28 | 2004-08-19 | Kokusan Denki Co Ltd | Multipolar magnet generator for internal combustion engine and ignition unit for capacitor discharge type internal combustion engine using this magnet generator |
| CN102032041A (en) * | 2009-10-07 | 2011-04-27 | 陈早明 | One-cylinder double-piston internal combustion engine for combustion explosion working before 45-degree angle after upper dead point |
| CN102072065A (en) * | 2010-11-21 | 2011-05-25 | 庄景阳 | Improvements on maintenance and performance of ignition system |
| JP2011132819A (en) * | 2009-12-22 | 2011-07-07 | Kawasaki Heavy Ind Ltd | Engine control device and engine control method |
| CN203394645U (en) * | 2013-06-21 | 2014-01-15 | 浙江福爱电子有限公司 | Electronic fuel injection engine superscript device |
| CN205422935U (en) * | 2016-03-09 | 2016-08-03 | 重庆长安汽车股份有限公司 | Structure of engine crankshaft rotational speed signal disc |
| CN206440218U (en) * | 2017-01-24 | 2017-08-25 | 重庆小康工业集团股份有限公司 | Magneto trigger gap special gauge |
| CN208010470U (en) * | 2018-01-23 | 2018-10-26 | 金城集团有限公司 | Zero deflection engine ignition timing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5108058B2 (en) * | 2010-06-10 | 2012-12-26 | 三菱電機株式会社 | Internal combustion engine control device |
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2018
- 2018-01-23 CN CN201810062828.8A patent/CN108060977B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932620A (en) * | 1995-07-20 | 1997-02-04 | Toyota Motor Corp | Crank angle detecting device of internal combustion engine |
| US6041647A (en) * | 1996-05-28 | 2000-03-28 | Toyota Jidosha Kabushiki Kaisha | Crank angle detecting apparatus for internal combustion engine |
| JP2003184629A (en) * | 2001-12-20 | 2003-07-03 | Denso Corp | Crank angle determining device for internal combustion engine |
| CN2573710Y (en) * | 2002-05-30 | 2003-09-17 | 杜俊雄 | High-energy igniting device for petrol motor |
| JP2004236382A (en) * | 2003-01-28 | 2004-08-19 | Kokusan Denki Co Ltd | Multipolar magnet generator for internal combustion engine and ignition unit for capacitor discharge type internal combustion engine using this magnet generator |
| CN102032041A (en) * | 2009-10-07 | 2011-04-27 | 陈早明 | One-cylinder double-piston internal combustion engine for combustion explosion working before 45-degree angle after upper dead point |
| JP2011132819A (en) * | 2009-12-22 | 2011-07-07 | Kawasaki Heavy Ind Ltd | Engine control device and engine control method |
| CN102072065A (en) * | 2010-11-21 | 2011-05-25 | 庄景阳 | Improvements on maintenance and performance of ignition system |
| CN203394645U (en) * | 2013-06-21 | 2014-01-15 | 浙江福爱电子有限公司 | Electronic fuel injection engine superscript device |
| CN205422935U (en) * | 2016-03-09 | 2016-08-03 | 重庆长安汽车股份有限公司 | Structure of engine crankshaft rotational speed signal disc |
| CN206440218U (en) * | 2017-01-24 | 2017-08-25 | 重庆小康工业集团股份有限公司 | Magneto trigger gap special gauge |
| CN208010470U (en) * | 2018-01-23 | 2018-10-26 | 金城集团有限公司 | Zero deflection engine ignition timing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108060977A (en) | 2018-05-22 |
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Effective date of registration: 20200303 Address after: 210000 No. 518 Zhongshan East Road, Qinhuai District, Nanjing, Jiangsu. Applicant after: Jincheng Group Co.,Ltd. Applicant after: Nanjing Jincheng Machinery Co.,Ltd. Address before: 211121 No. 518 Zhongshan East Road, Qinhuai District, Nanjing, Jiangsu. Applicant before: Jincheng Group Co.,Ltd. |
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