CN1039148C - Distributor of internal combustion engine - Google Patents
Distributor of internal combustion engine Download PDFInfo
- Publication number
- CN1039148C CN1039148C CN94113092A CN94113092A CN1039148C CN 1039148 C CN1039148 C CN 1039148C CN 94113092 A CN94113092 A CN 94113092A CN 94113092 A CN94113092 A CN 94113092A CN 1039148 C CN1039148 C CN 1039148C
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- China
- Prior art keywords
- distribution
- combustion engine
- rotor
- cover
- internal combustion
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- Expired - Lifetime
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Abstract
The present invention relates to a distributor for internal combustion engines. The present invention comprises a distribution rotor (2), a distribution sheet (3), a distribution cover (5), a ventilating device (8), projecting parts (2a and 2b), shrinking parts (5a, 5b, 8a and 8b), wherein the distribution rotor (2) is inlaid at the upper end of a rotating shaft (1) which synchronously rotates along with an internal combustion engine; the distribution sheet (3) arranged on the distribution rotor (2) distributes the secondary voltage supplied by an ignition coil to an igniting spark plug of each air cylinder of the internal combustion engine; the distribution cover (5) contains the distribution rotor (2); the ventilating device (8) is provided with a ventilating hole (9) at the upper part of the distribution cover (5) in order to communicate the interior and the exterior of the distribution cover (5); the projecting parts (2a and 2b) are formed on the upper surface of the distribution rotor (2); the shrinking parts (5a, 5b, 8a and 8b) are formed close to the top end of the ventilating hole (9) in order to generate negative pressure at the top end of the ventilating hole (9).
Description
The present invention relates to a refreshing distributor of internal combustion engine, the ignition spark plug of each cylinder is given in the rotation of it and internal-combustion engine synchronously the high voltage secondary voltage distribution of being supplied with by spark coil, especially relate to a kind of like this distributor of internal combustion engine: in preventing to rotate in the distribution rotor emersion, can be effectively because undesirable ozone gas that the discharge during distribution produces in the distribution cover etc. are discharged to the outside.
Figure 11 is the sectional view of expression as the top of existing distributor of internal combustion engine major component, among the figure, and the 1st, with bent axle (not shown) rotating shaft of rotation synchronously of internal-combustion engine; The 2nd, the distribution rotor of embedding rotating shaft 1 upper end.
3 are provided in a side of the distribution sheet on distribution rotor 2 upper surfaces, the rotation of itself and internal-combustion engine is synchronous, by discharging with respect to the surround electrodes (not shown) that are positioned in the distribution cover 5, and the ignition spark plug (not shown) of distributing to each cylinder by spark coil (not shown) secondary voltage of being supplied with.
4 is that an end is fixed on the spring on the distribution sheet 3.The 5th, hold the distribution cover of distribution rotor 2 grades, be installed in the shell (not shown).6 are mounted in the center graphite of the central authorities of distribution cover 5, and the lower end surface joins with the free end of spring 4.The 7th, the centre electrode of institute's conducting in the graphite of center is supplied with the secondary voltage (as ignition voltage) from spark coil.
The 8th, at the formed ventilation plant in the top of distribution cover 5, have and be used to be communicated with the inside and outside vent hole 9 of distribution cover 5.10 are provided in a side of the anticreep cover plate in the distribution cover 5, with respect to being located at the electromagnetic sensor in distribution cover 5 bottoms and comprising the igniting electronic circuit part (not shown) of output triode etc., prevent that the secondary voltage of high pressure from leaking.
Wherein, though diagram is not come out, in distribution cover 5, held; Be installed in the signal rotor of intermediate portion in the rotating shaft 1; Along the uniformly-spaced outstanding tinsel corresponding that is provided with of the peripheral part of signal rotor with cylinder number; Include the Test coil of relative configuration and the vibrator circuit of capacitor with signal rotor; Respond the oscillation test signal and carry out the output triode that break-make drives.
Like this, by connect the primary current of cut-out point fire coil according to the switching of output triode.That is, the secondary voltage that takes place synchronously of the rotation of the surround electrode handle of the distribution portion that comprises distribution sheet 3 and center graphite 6 by relative configuration with the top of distribution sheet 3 and signal rotor is applied to ignition spark beyond the Great Wall.
Work to existing distributor of internal combustion engine shown in Figure 11 describes below.
In the rotation of internal-combustion engine, when the tinsel on the signal rotor was not relative with Test coil in the vibrator circuit, Test coil and capacitor carried out the resonance of predetermined strength.On the other hand, when tinsel is relative with Test coil,, the vibration of vibrator circuit is stopped by the eddy current loss that when the magnetic flux that is produced by Test coil passes tinsel, being produced and hysteresis loss etc.
Thereby, according to tinsel with respect to Test coil near and leave, vibrator circuit be in repeatedly oscillatory regime and the vibration halted state, thus, come the driven for opening and closing output triode to connect the secondary current of cut-out point fire coil, when primary current is cut off, produce high-tension secondary voltage.
Secondary voltage from spark coil is conducting on the distribution sheet 3 by centre electrode 7, center graphite 6 and spring 4, and the tip portion of distribution sheet 3 is carried out distribution by discharge when relative with surround electrode, and the ignition spark that in turn is applied to each cylinder beyond the Great Wall.Its result bursts out spark by the ignition spark plug of the cylinder of being controlled, and carries out the igniting of stipulated time.
At this moment, towards periphery during electrode discharge, in distribution cover 5, can produce unwanted ozone etc., thereby will take a breath from distribution sheet 3 at secondary voltage by the vent in the ventilation plant 89.In order to realize gas exchange action effectively, pore (not shown) is set in the bottom of distribution cover 5.
By the anticreep cover plate 10 of insertion between distribution sheet 3 and Test coil and electronic circuit part, thereby when unusual generations such as ignition spark plug comes off, prevent that secondary voltage from leaking on the Test coil.
But,, carrying out abundant effectively ventilation and being still difficulty if ventilation plant 8 only is set.And emersion is next easily owing to the root that produces in the rotation swings for distribution rotor 2, just has the danger that comes off from rotating shaft 1.
As described above, only be provided with ventilation plant 8, can not carry out the fully effectively problem of ventilation with regard to having because existing distributor of internal combustion engine is the ventilation of carrying out in the distribution cover 5.
And the distribution rotor 2 that is embedded with rotating shaft 1 upper end floats in rotation, just the problem that comes off from rotating shaft 1 is arranged.
In order to address the above problem, the purpose of this invention is to provide a kind of distributor of internal combustion engine, can in the emersion that prevents the distribution rotor, carry out the ventilation in the distribution cover effectively.
Distributor of internal combustion engine of the present invention comprises: the distribution rotor that is embedded in the rotating shaft upper end that rotates synchronously with internal-combustion engine; For the secondary voltage of supplying with from spark coil is distributed to each ignition spark plug of internal-combustion engine and is located at the epitrochanterian distribution sheet of distribution; Has ventilation plant at the formed vent in distribution cover top; Formed protuberance on the upper surface of distribution rotor; The contraction flow region that also forms near the tip portion of vent for the tip portion to vent produces negative pressure.
In the present invention, in rotation, provide down force to prevent distribution rotor emersion, simultaneously, impel the air in the distribution cover to take a breath upward by the epitrochanterian protuberance of distribution.Air by means of formed contraction flow region passed through on the vent tip portion of ventilation plant provides negative pressure to vent, to promote in the distribution cover ventilation to the outside.
With accompanying drawing embodiments of the invention 1 are described below.Fig. 1 is the planimetric map of expression by the embodiment of the invention 1 formed distribution cover; Fig. 2 is the formed sectional view of X-X line from Fig. 1, in these figure, and 2～4th, part same as described above, not shown structure are structures as shown in Figure 11.
2a is a formed protuberance on the upper surface of distribution rotor 2, and wherein, in order to obtain the down force with the irrelevant to rotation direction of distribution rotor 2, sectional shape has symmetrical triangle.
Fig. 3 is the sectional view of protuberance 2b of other shapes of expression, by only on sense of rotation R effective trapezoidal institute constitute.At sense of rotation R is under the situation about being predetermined, and preferably uses the protuberance 2b of Fig. 3 shape.
This distribution rotor 2 that has protuberance 2a or 2b on upper surface when rotation drives, is subjected to resistance of air by protuberance 2a or 2b, then promptly embeds the direction plus-pressure of rotating shaft 1 downwards with the direction of depressing.Thereby, just can prevent really by the rotation of the off-centre of the caused distribution sheet 3 of floating of distribution rotor 2 and the collision accident of electrode towards periphery.
Structure to the ventilation plant in the embodiment of the invention 18 describes below.
Fig. 4 is the side view of peripheral construction of the ventilation plant 8 of the expression embodiment of the invention 1, and among the figure, 5,8 and 9 is parts same as described above.
8a is the contraction flow region that is used for producing to the tip portion of vent 9 negative pressure, forms near the tip portion of vent 9.In this case, contraction flow region 8a is by formed circular-arc protuberance is constituted on the top of ventilation plant 8, air flue between the relative wall of the tip portion of ventilation plant 8 and distribution cover 5 narrows down, and the flow velocity of the air A of the tip portion by vent 9 is sharply risen.
According to this structure, in the running of the vehicle that internal-combustion engine has been installed or travelling, by by the wind of the cooling fan that around distributor, produces and travel wind and flow air A, the negative pressure that effect causes in the tip portion of ventilation plant 8 produces by river in Shangdong Province Du.Therefore, the harmful gas that is produced in distribution cover 5 when IGNITION CONTROL is discharged to the outside energetically, effectively takes a breath.
Fig. 5 is the side view of expression during as the forming on distribution cover 5 relative walls of another embodiment, 5,8,9 and A be part same as described above.
5a is a formed circular-arc contraction flow region on the upper surface of distribution cover 5, towards less outstanding to heavens setting of the tip portion of ventilation plant.In this case, the flow velocity of the air A of the tip portion by ventilation plant 8 sharply accelerates, and the negative pressure that produces in the time of thus just can be discharged distribution cover 5 interior harmful gases to the tip portion of vent 9 effectively.
To be expression constitute the side view under the situation that ventilation plant 8 and distribution cover 5 both sides portions form of example as another of contraction flow region to Fig. 6,5,5a, 8,8a, 9 and A be part same as described above.In this case, by dwindling the space between contraction flow region 5a and the 8a, effect becomes big in Du of river in Shangdong Province and make, and the flow velocity of air A is risen, and just has the scavenging action in the more significant distribution cover 5.
Though what represent in each embodiment of Fig. 4～Fig. 6 is that self-evident, shrinking in the horizontal direction also has effect same as described above the space of the tip portion of the ventilation plant 8 direction situation of shrinking up and down.
Fig. 7 is expression contraction flow region another embodiment's a side cross-sectional views, and Fig. 8 is the plan cross-sectional view along the Y-Y line of Fig. 7, in these figure, 5,8,9 and A be part same as described above.
5b is upright sidewall shape contraction flow region on distribution cover 5 with not ing, and upper surface joins with the top end of ventilation plant 8, and give prominence to circular-arc the side relative with vent 9.In this case, by contraction flow region 5b and ventilation plant 8, be designed to the air channel shape path of substantially horizontal with respect to air A, thereby, just can prevent that rainwater and dust from invading in the ventilation plant 8, simultaneously, effect acts on more significantly in Du of river in Shangdong Province, has improved the discharge of harmful gases effect.
Fig. 9 is the expression embodiment's different with contraction flow region a side cross-sectional views, and Figure 10 is the plan cross-sectional view of the Z-Z line of Fig. 9, in each figure, 5,8,9 and A be part same as described above.
8b is the contraction flow region that the outside part prolongation of the tip portion of ventilation plant 8 is formed, and top end joins with the upper surface of distribution cover 5, and inner side surface in this case, has identical action effect with the situation of Fig. 7 and Fig. 8 with circular-arc outstanding.
According to distributor of internal combustion engine of the present invention, owing to be provided with: the distribution rotor that is embedded in the rotating shaft upper end that rotates synchronously with internal-combustion engine; For the secondary voltage of being supplied with by spark coil is distributed to the ignition spark plug of each cylinder of internal-combustion engine and is arranged on the epitrochanterian distribution sheet of distribution; The distribution cover that holds the distribution rotor; In order to be communicated with inside and outside the distribution cover and have the ventilation plant of the vent that is formed on distribution cover top; Formed protuberance on distribution rotor upper surface; In order to produce negative pressure to the tip portion of vent near the formed contraction flow region of the tip portion of vent, so can when preventing that the distribution rotor from floating, carry out the ventilation in the distribution cover effectively.
Fig. 1 is the planimetric map of expression embodiments of the invention 1;
Fig. 2 is the sectional view of X-X line among Fig. 1;
Fig. 3 is the sectional view of another formation example of the epitrochanterian protuberance of distribution in the expression embodiment of the invention 1;
Fig. 4 is the side view of the contraction flow region of the ventilation plant tip portion in the expression embodiment of the invention 1;
Fig. 5 is the sectional view of another configuration example of the contraction flow region in the expression embodiment of the invention 1;
Fig. 6 is the sectional view of expression configuration example that the embodiment's of Fig. 4 and Fig. 5 contraction flow region is combined;
Fig. 7 is the side cross-sectional views of the contraction flow region of another enforcement of expression the present invention;
Fig. 8 is the plan cross-sectional view of Y-Y line among Fig. 7;
Fig. 9 is the side cross-sectional views of expression more different embodiment's of the present invention contraction flow region;
Figure 10 is the plan cross-sectional view of Z-Z line among Fig. 9;
Figure 11 is the sectional view of the major component of the existing internal-combustion engine power distribution unit of expression;
Label among the figure is represented:
1: rotating shaft; 2: the distribution rotor; 2a, 2b: protuberance;
3: the distribution sheet; 5: the distribution cover; 5a, 5b: contraction flow region;
8: ventilation plant; 8a, 8b: contraction flow region;
9: vent.
Claims (1)
1, a kind of distributor of internal combustion engine comprises:
Be embedded in the distribution rotor (2) of rotating shaft (1) upper end that rotates synchronously with internal-combustion engine;
, the secondary voltage of being supplied with by spark coil is located at the distribution sheet (3) of above-mentioned distribution rotor for being distributed to the ignition spark plug of above-mentioned each cylinder of internal-combustion engine;
The distribution cover (5) that holds above-mentioned distribution rotor;
In order to be communicated with inside and outside the above-mentioned distribution cover and have the ventilation plant (8) of the vent (9) that is formed on above-mentioned distribution cover top;
It is characterized in that,
Formed protuberance on the upper surface of above-mentioned distribution rotor (2a, 2b);
For the tip portion to above-mentioned vent hole produces negative pressure and the formed contraction flow region of tip portion (5a, 5b, 8a, 8b) of approaching above-mentioned vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113092A CN1039148C (en) | 1994-12-07 | 1994-12-07 | Distributor of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113092A CN1039148C (en) | 1994-12-07 | 1994-12-07 | Distributor of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1124328A CN1124328A (en) | 1996-06-12 |
| CN1039148C true CN1039148C (en) | 1998-07-15 |
Family
ID=5036531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113092A Expired - Lifetime CN1039148C (en) | 1994-12-07 | 1994-12-07 | Distributor of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039148C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604770U (en) * | 1983-06-24 | 1985-01-14 | 三菱電機株式会社 | Engine ignition power distributor |
| CN87108250A (en) * | 1987-10-20 | 1988-07-27 | 荣成县供销合作社进口车修配厂 | Multi-point spark spacer for ic engine |
| US5209195A (en) * | 1991-07-19 | 1993-05-11 | Nippondenso Co., Ltd. | Ignition distributor |
| US5365909A (en) * | 1992-06-15 | 1994-11-22 | Mitsubishi Denki Kabushiki Kaisha | Ignitor for an internal combustion engine |
-
1994
- 1994-12-07 CN CN94113092A patent/CN1039148C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604770U (en) * | 1983-06-24 | 1985-01-14 | 三菱電機株式会社 | Engine ignition power distributor |
| CN87108250A (en) * | 1987-10-20 | 1988-07-27 | 荣成县供销合作社进口车修配厂 | Multi-point spark spacer for ic engine |
| US5209195A (en) * | 1991-07-19 | 1993-05-11 | Nippondenso Co., Ltd. | Ignition distributor |
| US5365909A (en) * | 1992-06-15 | 1994-11-22 | Mitsubishi Denki Kabushiki Kaisha | Ignitor for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1124328A (en) | 1996-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141207 Granted publication date: 19980715 |