CN2300812Y - Low temp. starting contact type ignitor - Google Patents
Low temp. starting contact type ignitor Download PDFInfo
- Publication number
- CN2300812Y CN2300812Y CN 97222954 CN97222954U CN2300812Y CN 2300812 Y CN2300812 Y CN 2300812Y CN 97222954 CN97222954 CN 97222954 CN 97222954 U CN97222954 U CN 97222954U CN 2300812 Y CN2300812 Y CN 2300812Y
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- CN
- China
- Prior art keywords
- transistor
- separated motor
- contact
- motor contact
- ignition coil
- 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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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model belongs to an ignitor used for an automobile, particularly a low temperature starting contact type ignitor, which is characterized in that the upper part of a circuit board (3) is provided with a bottom cover (2); an outer shell is connected with a resistor (4) -R16; a sub motor contact (11) can be connected with a capacitor (C3) in parallel; one end of a negative pole wire (7) is connected with an ignition coil (5), and the other end is connected with the collector of a transistor (T8); one end of a positive pole wire (6) is connected with an accumulator cell (13), and the other end is connected with the emitter of a transistor (T7); one end of an earth wire (8) is grounded, and the other end is connected with the emitter of the transistor (T8); one end of a lead-out wire (9) of the sub motor contact is connected with the sub motor contact (11), and the other end is connected with the base electrode of a unijunction transistor (T1). The utility model can be normally started in-35DEG C, and has low cost, high safety, and convenient maintenance.
Description
The utility model belongs to the igniter of using on the automobile, is specially a kind of a kind of cold-starting contact-controlled ignition device that is.
In the contact electronic igniter, distributor point is used for triggering transistor, conducting and by primary current, because the electric current by the contact is little, can seriously not ablate in the contact, therefore can keep higher voltage output, and can keep the correct duration of ignition in the longer time.Example 1: with the BD-71Z type, when must reaching 250-350mA, its contact current could effectively control the on-off circuit of forming by transistor, so the pitting of contact phenomenon happens occasionally, example 2: the TR12N transistor npn npn contact-controlled ignition device and the BD-71Z type of development company of U.S. Motorola Inc. are basic identical, also more than 200mA, but also there is ablation phenomen the contact to its contact control electric current.Example 3: it compares the FT310 type of Japanese Toyota Company with homemade BD-71Z type and has increased by four transistors, to improve the driving force to switching tube.No matter be homemade or the transistor contact electronic igniter of the U.S., Japan, their structure is identical substantially, must be equipped with special-purpose ignition coil.For example homemade BD-71Z type igniter, must with supporting could the use of DQ710 type ignition coil of special use, need to remove the capacitor that is in parallel with the platinum contact in the former ignition distributor, need reduce contactor gap, because above contact electronic igniter, must when the closing of contact, just can make and form on-off circuit work by transistor, so reduce the angle of ignition, and to suitably adjust the main jet of carburetor, make it to dwindle, with the reduction oil mass, but dwindling of main jet can reduce automobile engine power, makes the engine power deficiency.
The purpose of this utility model is to provide a kind of cold-starting contact-controlled ignition device that can start smoothly in the winter time.
The purpose of this utility model is achieved in that a kind of cold-starting contact-controlled ignition device, it is by shell (1), bottom (2), wiring board (3), additional resistance (4)-R16, ignition coil (5), electrode line (6), negative line (7), ground wire (8), separated motor contact lead-out wire (9), separated motor (10), separated motor contact (11), ignition switch (12), battery (13), ignition coil secondary cable (14), separated motor lid (15), spark plug (16), split fire head (17) in the separated motor, transistor (T), crystal diode (D), resistance (R), capacitor (C) is formed, it is characterized in that: one bottom (2) is arranged on wiring board (3) top, on shell, connect a resistance (4)-R16, can a capacitor (C3) in parallel on separated motor contact (11), negative line (7) one ends and ignition coil (5), the other end is connected with transistor (T8) colelctor electrode, electrode line (6) one ends and battery (13), the other end is connected with transistor (T7) emitter stage, ground wire (8) one ends and ground, the other end is connected with transistor (T8) emitter stage, separated motor contact lead-out wire (9) one ends and separated motor contact (11), the other end is connected with the base stage of unijunction transistor (T1).
Advantage of the present utility model is: vehicle can normally start at-35 ℃, and the electric current that flows through distributor point is at 8mA.Simple in structure, with low cost, safe and reliable, operating maintenance is easy to use.
Fig. 1 is the utility model structural principle schematic diagram.
Fig. 2 is the utility model and each parts catenation principle schematic diagram of automobile.
Fig. 3 is the utility model and automobile power source, starting system catenation principle schematic diagram.
Fig. 4 is the utility model electrical schematic diagram schematic diagram.
Split fire head, T-transistor, D-crystal diode, R-resistance, C-capacitor in 1-shell, 2-bottom, 3-wiring board, 4-additional resistance R16,5-ignition coil, 6-electrode line, 7-negative line, 8-ground wire, 9-separated motor contact lead-out wire, 10-separated motor, 11-separated motor contact, 12-ignition switch, 13-battery, 14-ignition coil secondary cable, 15-separated motor lid, 16-spark plug, the 17-separated motor.
Below in conjunction with accompanying drawing, the utility model most preferred embodiment is described in detail in detail: a kind of cold-starting contact-controlled ignition device, it is by shell (1), bottom (2), wiring board (3), additional resistance (4)-R16, ignition coil (5), electrode line (6), negative line (7), ground wire (8), separated motor contact lead-out wire (9), separated motor (10), separated motor contact (11), ignition switch (12), battery (13), ignition coil secondary cable (14), separated motor lid (15), spark plug (16), split fire head (17) in the separated motor, transistor (T), crystal diode (D), resistance (R), capacitor (C) is formed, it is characterized in that: one bottom (2) is arranged on wiring board (3) top, on shell, connect a resistance (4)-R16, can a capacitor (C3) in parallel on separated motor contact (11), negative line (7) one ends and ignition coil (5), the other end is connected with transistor (T8) colelctor electrode, electrode line (6) one ends and battery (13), the other end is connected with transistor (T7) emitter stage, ground wire (8) one ends and ground, the other end is connected with transistor (T8) emitter stage, separated motor contact lead-out wire (9) one ends and separated motor contact (11), the other end is connected with the base stage of unijunction transistor (T1).Impulse generator is made up of T1, R1, R3, C1, and R3 is that current-limiting resistance, the R1 of T1 is the biasing resistor of T1, and C1 is an oscillating capacitance.Isolator is made up of T2, R2, R4, R5.R2 is that biasing resistor, R5 are divider resistance, and Schmidt trigger is made up of T3, T4, R6, R7, R8, R9, R11, and R6, R11 are the biasing resistor of T3, T4, and R7, R8, R9 are the piezoresistance of T3, T4.Impulse generator, isolator, Schmidt trigger power supply are to be finished by D1 and R14.Square wave amplifier is made up of T5, T6, T7, R10, R12, R13, R15, R16, and R10, R12, R15 are the biasing resistor of T5, T6.On-off circuit is made up of T7, T8, D2, C2, R16 ignition coil, and T7, T8 are the voltage that switching tube, C2 improve induced electromotive force, and D2 is the protection diode of T8, T7.When contact breaker points disconnects, the self-maintained circuit starting of oscillation of forming by unijunction transistor T1, produce consecutive pulses, pulse signal shaping amplification circuit via electronic original parts such as T2, T3, T4, T5 formation, the shift pulse signal that self-maintained circuit is produced becomes reverse rectangle square-wave signal, to drive electronic switching tube T7, T8.Amplifier output electronegative potential ends T6, causes T7, T8 to end, and electric current is cut off in the primary coil, produces a high-tension electricity kinetic potential at secondary coil, and D2 prevents that self induction electromotive force from making the switch overload and damage.Because the frequency of oscillation of self-maintained circuit is higher, can produce the firing pulse high pressure in a combustion period of engine, frequency is 200/second, can obviously improve cold starting performance.Can be in parallel on the separated motor contact or shnt capacitor C3 not.
Claims (1)
1, a kind of cold-starting contact-controlled ignition device, it is by shell (1), bottom (2), wiring board (3), additional resistance (4)-R16, ignition coil (5), electrode line (6), negative line (7), ground wire (8), separated motor contact lead-out wire (9), separated motor (10), separated motor contact (11), ignition switch (12), battery (13), ignition coil secondary cable (14), separated motor lid (15), spark plug (16), split fire head (17) in the separated motor, transistor (T), crystal diode (D), resistance (R), capacitor (C) is formed, it is characterized in that: one bottom (2) is arranged on wiring board (3) top, on shell, connect a resistance (4)-R16, can a capacitor (C3) in parallel on separated motor contact (11), negative line (7) one ends and ignition coil (5), the other end is connected with transistor (T8) colelctor electrode, electrode line (6) one ends and battery (13), the other end is connected with transistor (T7) emitter stage, ground wire (8) one ends and ground, the other end is connected with transistor (T8) emitter stage, separated motor contact lead-out wire (9) one ends and separated motor contact (11), the other end is connected with the base stage of unijunction transistor (T1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222954 CN2300812Y (en) | 1997-05-22 | 1997-05-22 | Low temp. starting contact type ignitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222954 CN2300812Y (en) | 1997-05-22 | 1997-05-22 | Low temp. starting contact type ignitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2300812Y true CN2300812Y (en) | 1998-12-16 |
Family
ID=33937853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97222954 Expired - Fee Related CN2300812Y (en) | 1997-05-22 | 1997-05-22 | Low temp. starting contact type ignitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2300812Y (en) |
-
1997
- 1997-05-22 CN CN 97222954 patent/CN2300812Y/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 |