CN2150353Y - Platinum-contact protecting device for automobile igniting - Google Patents
Platinum-contact protecting device for automobile igniting Download PDFInfo
- Publication number
- CN2150353Y CN2150353Y CN 93209355 CN93209355U CN2150353Y CN 2150353 Y CN2150353 Y CN 2150353Y CN 93209355 CN93209355 CN 93209355 CN 93209355 U CN93209355 U CN 93209355U CN 2150353 Y CN2150353 Y CN 2150353Y
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- CN
- China
- Prior art keywords
- platinum
- field effect
- effect transistor
- lead
- igniting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a platinum-contact protecting device for automobile igniting, which is composed of a housing and a circuit board arranged in the housing. The platinum-contact protecting device for automobile igniting is characterized in that the circuit board is provided with a switching circuit composed of a transistor T1 and a field effect transistor T2; the first level output of the transistor T1 of the switching circuit is connected with the input of the field effect transistor by a resistor; the output of the field effect transistor T2 is directly connected with one end of an igniting primary coil, and the other end of the coil is supplied by a power supply 12V voltage; the input signal source of the switching circuit is used as platinum contacts C1 and C2. The platinum-contact protecting device for automobile igniting has the advantages of no ablation of the platinum contacts, good quality of igniting, high reliability, complete combustion of mix gas, fuel saving, and environment pollution improvement.
Description
The utility model relates to a kind of automotive ignition with platinum contact protection device, belongs to auto parts machinery.
Conventional igniton system commonly used is leading to of primary air L1 circuit in the control ignition system by the break-make of platinum contact C1 and C2 on the existing automobile, disconnected, therefore pass through the electric current big (3～5 amperes) of platinum contact, and when the platinum contact separates, the place easily forms spark and the ablation contact in the contact, so not only shorten greatly the working life of platinum contact, and limited the raising of electric current in the igniting primary air circuit, thereby ignition voltage in the secondary coil circuit and energy also are restricted at this point, its consequence often causes ignition quality not good, make mixture combustion insufficient and reduce the power of motor, increase with fuel consumption, even go back serious environment pollution; In addition, ignition voltage is restricted, and the climbing speed of secondary voltage is low, makes it relatively responsive to sooting of the spark plug, and when sooting of the spark plug with when polluting, secondary voltage will descend, also thereby can reduce the reliability of igniting.This shows the electric current that reduces the platinum contact, just can reduce the ablation of its contact, so not only make contact prolongation in working life itself, and directly relate to the insufficient of the quality of igniting and burning, influence the power and the oil consumption of motor.
The purpose of this utility model is to design automotive ignition platinum contact protector; this protector can significantly reduce the carbon deposit of the ablation spark plug of platinum contact, improves ignition quality and improves the igniting reliability, thereby make mixture combustion abundant; save oil consumption, improve environmental pollution.
The purpose of this utility model is achieved in that a kind of automotive ignition platinum contact protection device; formed by a housing and the circuit board that is arranged in the housing; it is characterized in that circuit board is provided with a switching circuit of being made up of transistor T1 and field effect transistor T2; the one-level output of this switching circuit transistor T 1 links by the input of resistance and field effect transistor; the output of field effect transistor T2 is then directly joined with igniting primary air one end; the other end of this coil and power supply 12V voltage link, and the input signal source of switching circuit is platinum contact C1, C2.Because the platinum contact is arranged at this and makes signal source, though use so it still makes IGNITION CONTROL, but the electric current that flows through on it only is original several a thousandths (about about 10 milliamperes), so ablating appears in platinum contact never again, and this switching circuit is logical, disconnected property is good, when its field effect transistor adopts high power valve, it can be very big by electric current, so the electric current that primary air L1 passes through is restricted the voltage climbing speed height of secondary winding never again, thereby ignition quality is improved greatly, make mixture combustion abundant, oil consumption is few, makes to be difficult for carbon deposit on the spark plug, igniting reliability height, and laborsaving, the saving of labor.
With drawings and Examples structure of the present utility model is further narrated below.
Description of drawings:
Fig. 1 is an overall structure schematic representation of the present utility model.
Fig. 2 is the circuti diagram of circuit board of the present utility model.
By Fig. 1; Fig. 2 as seen; automotive ignition of the present utility model is made up of a housing 1 and the circuit board that is arranged in the housing 1 with platinum contact protection device; housing 1 is provided with threading hole 11; it is characterized in that circuit board is provided with a switching circuit of being made up of transistor T1 and high-power FET T2; the output of triode T1 collector electrode links by the grid of resistance R 3 with field effect transistor T2; the base stage of triode T1 is drawn by resistance R 2 usefulness lead c; triode T1 emitter is drawn with lead d by resistance R 1 back; the source electrode of field effect transistor T2 is drawn with lead b; the negative pole of lead b and power supply joins; the field effect transistor drain electrode is drawn with lead a; leak; a capacitor C 1 in parallel between source electrode, lead a; d; c; b draws through threading hole 11.
Above-mentioned a, d, c, b lead are corresponding with igniting primary air two ends and two platinum contacts respectively, and lead d connects the positive pole of power supply, and lead b connects the negative pole (ground connection) of power supply.When this protector and the primary air L1, the power supply (12V direct current) that are arranged on the automobile; and platinum contact C, C2 is corresponding is connected; make the switching circuit control ignition of signal source with regard to available platinum contact by this protector; make its ignition quality good; the mixture combustion of automobile is complete, and fuel-economizing, saving of labor, platinum contact are not ablated, spark plug is difficult for carbon deposit, the high purpose of igniting reliability thereby reach.
As seen from Figure 2, triode adopts 2N6309 in the switching circuit of the present utility model, field effect transistor is selected high-power N ditch VMOS pipe (MTM15N50) for use, very good through the experiment using effect, its platinum touches narrows the life-span and can be original tens times, fuel-efficient, and the tail gas exhaust rate height that inclines only, reach the regulation examination criteria fully.
Claims (2)
1; automotive ignition platinum contact protection device; formed by a housing (1) and the circuit board that is arranged in the housing (1); housing (1) is provided with threading hole (11); it is characterized in that circuit board is provided with a switching circuit of being made up of transistor T1 and high-power FET T2; the output of triode T1 collector electrode links by the grid of resistance R 3 with field effect transistor T2; the base stage of triode T1 is drawn by resistance R 2 usefulness lead c; triode T1 emitter is drawn with lead d by resistance R 1 back; the source electrode of field effect transistor T2 is drawn with lead b; the negative pole of lead b and power supply joins; the field effect transistor drain electrode is drawn with lead a; leak; a capacitor C 1 in parallel between source electrode, lead a; d; c; b draws through threading hole (11).
2, by the described automotive ignition of claim 1 platinum contact protection device, it is characterized in that triode is 2N6309 in the switching circuit, field effect transistor is the high-power V metal-oxide-semiconductor of MTM15N50 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209355 CN2150353Y (en) | 1993-04-14 | 1993-04-14 | Platinum-contact protecting device for automobile igniting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209355 CN2150353Y (en) | 1993-04-14 | 1993-04-14 | Platinum-contact protecting device for automobile igniting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2150353Y true CN2150353Y (en) | 1993-12-22 |
Family
ID=33791561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93209355 Expired - Fee Related CN2150353Y (en) | 1993-04-14 | 1993-04-14 | Platinum-contact protecting device for automobile igniting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2150353Y (en) |
-
1993
- 1993-04-14 CN CN 93209355 patent/CN2150353Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |