CN204175499U - To catch fire at a high speed speed-limiting capacitance formula ignition mechanism - Google Patents
To catch fire at a high speed speed-limiting capacitance formula ignition mechanism Download PDFInfo
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- CN204175499U CN204175499U CN201420500368.XU CN201420500368U CN204175499U CN 204175499 U CN204175499 U CN 204175499U CN 201420500368 U CN201420500368 U CN 201420500368U CN 204175499 U CN204175499 U CN 204175499U
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Abstract
The utility model discloses a kind of speed-limiting capacitance formula ignition mechanism of catching fire at a high speed, comprise monopulse commutating circuit, charge to Ignition capacitor, it comprises charge coil L1, diode D1, D2, and Ignition capacitor C1; Controllable silicon Q2, carry out discharge and recharge, its minus earth for controlling Ignition capacitor C1, anode is connected to the input end of described Ignition capacitor C1; Trigger loop, for controlling the discharging time of Ignition capacitor C1, controlling pole with described silicon controlled and being connected, control silicon controlled conducting and cut-off; Catch fire at a high speed speed limit loop, for the discharging time of the C1 of the down-firing electric capacity that controls to run up, is connected, control silicon controlled conducting and cut-off with the control pole of described controllable silicon Q2; And spark coil T1, it comprises primary air L3 and secondary winding L4, and secondary winding L4 exports high pressure.
Description
Technical field
The utility model belongs to miniature gasoline engine igniter field, especially relates to a kind of speed-limiting capacitance formula ignition mechanism of catching fire at a high speed.
Background technique
The miniature gasoline engine ignition mechanisms such as existing miniature gasoline engine mowing machine, chain saw, blower, pruner, capacitor charge and discharge formula (C.D.I) ignition mechanism, rotating speed too high or driving phenomenon (rotating speed too high rear automatic detonation when existing petrol engine exists at full speed, can not stop working), there is larger potential safety hazard, be the emphasis that miniature gasoline engine field needs to control always.
Model utility content
The utility model, in order to overcome the deficiencies in the prior art, provides a kind of speed-limiting capacitance formula ignition mechanism that has that the speed error that catches fire is little, the high speed of stabilization of speed is caught fire.
To achieve these goals, the utility model by the following technical solutions: a kind of speed-limiting capacitance formula ignition mechanism of catching fire at a high speed, comprises monopulse commutating circuit, Ignition capacitor is charged, it comprises charge coil L1, diode D1, D2, and Ignition capacitor C1;
Controllable silicon Q2, carry out discharge and recharge, its minus earth for controlling Ignition capacitor C1, anode is connected to the input end of described Ignition capacitor C1;
Trigger loop, for controlling the discharging time of Ignition capacitor C1, controlling pole with described silicon controlled and being connected, control silicon controlled conducting and cut-off;
Catch fire at a high speed speed limit loop, for the discharging time of the C1 of the down-firing electric capacity that controls to run up, is connected, control silicon controlled conducting and cut-off with the control pole of described controllable silicon Q2;
And spark coil T1, it comprises primary air L3 and secondary winding L4, and secondary winding L4 exports high pressure; Described triggering loop comprises trigger winding L2, resistance R5, R6, diode D4, D5, trigger winding L2 one end ground connection, and the other end is extremely connected with the control of described controllable silicon S1 after series diode D4, resistance R9 successively; Diode D5 plus earth, negative electrode is connected between trigger winding and diode D4 anode; Resistance R6 one end ground connection, the other end is connected between the output terminal of resistance R5 and the control pole of described controllable silicon S1;
The described high speed speed limit loop that catches fire comprises resistance R2, R3, R4, filter capacitor C2, controllable silicon Q1 and diode D3, the minus earth of controllable silicon Q1, and anode is connected to the output terminal of charge coil; One end ground connection after resistance R2, R3 parallel connection, the other end is connected with the control pole of controllable silicon Q1; Resistance R4 input end is connected to the control pole of controllable silicon Q1, and output terminal is connected the negative electrode of described diode D3, and the anode of diode D3 is connected to the anode of described diode D4; Filter capacitor C2 one end ground connection, the other end is connected between resistance R4 and diode D3.
Further, described monopulse commutating circuit comprises charge coil L1, diode D1, D2, Ignition capacitor C1, is connected in parallel on the diode D6 at Ignition capacitor C1 two ends and is connected in parallel on the resistance R1 at charge coil L1 two ends, one end ground connection of charge coil L1, the other end connects primary air L3 after series diode D1, D2, Ignition capacitor C1 successively; The plus earth of diode D6, negative electrode is connected to the input end of Ignition capacitor C1; The anode of controllable silicon S1 is connected between the negative electrode of diode D2 and the negative electrode of diode D6.
In sum, the utility model has the following advantages: this device integrated circuit is simple, and components and parts are few, and when running up, igniter is not enable, makes gasoline engine power not enough, realizes speed limiting function; And it is little to have the speed error that catches fire, the advantages such as stabilization of speed.
Accompanying drawing explanation
Fig. 1 is external structure schematic diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of model utility.
Embodiment
The utility model scheme is better understood in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, clear, complete description is carried out to the technological scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
As shown in Figure 1, 2, a kind of speed-limiting capacitance formula ignition mechanism of catching fire at a high speed, its exterior mechanical comprises charge coil 1, primary air 2, point slot coil 3, circuit board 4, iron core 5, shell 6, flame-out sheet 7, high-head 8, high-voltage connection 9, and its structure is simple, stable.
The circuit board 4 of described ignition mechanism comprises monopulse commutating circuit, charges to Ignition capacitor, and it comprises charge coil L1, diode D1, D2, and Ignition capacitor C1; Controllable silicon Q2, carry out discharge and recharge, its minus earth for controlling Ignition capacitor C1, anode is connected to the input end of described Ignition capacitor C1; Trigger loop, for controlling the discharging time of Ignition capacitor C1, controlling pole with described silicon controlled and being connected, control silicon controlled conducting and cut-off; Catch fire at a high speed speed limit loop, for the discharging time of the C1 of the down-firing electric capacity that controls to run up, is connected, control silicon controlled conducting and cut-off with the control pole of described controllable silicon Q2; And spark coil T1, it comprises primary air L3 and secondary winding L4, and secondary winding L4 exports high pressure; Described triggering loop comprises trigger winding L2, resistance R5, R6, diode D4, D5, trigger winding L2 one end ground connection, and the other end is extremely connected with the control of described controllable silicon S1 after series diode D4, resistance R9 successively; Diode D5 plus earth, negative electrode is connected between trigger winding and diode D4 anode; Resistance R6 one end ground connection, the other end is connected between the output terminal of resistance R5 and the control pole of described controllable silicon S1;
The described high speed speed limit loop that catches fire comprises resistance R2, R3, R4, filter capacitor C2, controllable silicon Q1 and diode D3, the minus earth of controllable silicon Q1, and anode is connected to the output terminal of charge coil; One end ground connection after resistance R2, R3 parallel connection, the other end is connected with the control pole of controllable silicon Q1; Resistance R4 input end is connected to the control pole of controllable silicon Q1, and output terminal is connected the negative electrode of described diode D3, and the anode of diode D3 is connected to the anode of described diode D4; Filter capacitor C2 one end ground connection, the other end is connected between resistance R4 and diode D3.
Concrete, in the present embodiment, described monopulse commutating circuit comprises charge coil L1, diode D1, D2, Ignition capacitor C1, is connected in parallel on the diode D6 at Ignition capacitor C1 two ends and is connected in parallel on the resistance R1 at charge coil L1 two ends, one end ground connection of charge coil L1, the other end connects primary air L3 after series diode D1, D2, Ignition capacitor C1 successively; The plus earth of diode D6, negative electrode is connected to the input end of Ignition capacitor C1; The anode of controllable silicon S1 is connected between the negative electrode of diode D2 and the negative electrode of diode D6.
Working principle:
1. normal ignition process:
When magnet rotor rotates, charge coil L1 produces pulse, and in figure, the pulse of A point is through diode D1, D2, forms monopulse commutating circuit after Ignition capacitor C1, primary air L3, charges to Ignition capacitor C1;
The pulse that trigger winding L2 produces lags behind charge coil L1, in figure, the pulse of C point is after diode D4 rectification, formed behind loop through resistance R5, R6, trigger current is provided to controllable silicon Q2, make controllable silicon Q2 conducting, the electricity that Ignition capacitor C1 fills forms loop by controllable silicon Q2, primary air L3, carries out instantaneous discharge to charging capacitor C1, and primary air L3 current break senses that secondary winding L4 forms secondary high-pressure and exports; Magnet rotor often rotates a circle and repeats once above function, realizes normal ignition.
2. to catch fire at a high speed speed limit process: by the circuit realiration in dotted line frame;
The pulse C point that during high speed, trigger winding L2 produces is through diode D3 rectification, resistance R2, R3, R4, and filter capacitor C2 forms RC loop, charges to filter capacitor C2, the electricity that C2 fills forms RC time delay discharge loop through resistance R2, R3, R4, provides trigger current to controllable silicon Q1; When charge coil L1 pulse arrives, filter capacitor C2 also has electricity to keep providing trigger current to controllable silicon Q1, make controllable silicon Q1 conducting, by the electromotive force release that charge coil L1 produces, the pulse that L1 produces can not charge to charging capacitor C1 after diode D1, controllable silicon Q1 release again, C1 can not obtain electricity just can not realize electric discharge, can not realize above 1st normal ignition function, thus realizes catching fire speed limiting function.
Catch fire in loop, diode D1 and resistance R3 has special function: the special role of D1 makes controllable silicon Q1 anode (B point) can only obtain positive electricity, makes Q1 keep conducting, be of value to stabilization of speed of catching fire when catching fire enable; Resistance R3 is negative temperature coefficient resister, and special role is the rotating speed deviation of catching fire under the high or low temperature condition of compensation.
Claims (2)
1. high speed is caught fire a speed-limiting capacitance formula ignition mechanism, comprises
Monopulse commutating circuit, charges to Ignition capacitor, and it comprises charge coil L1, diode D1, D2, and Ignition capacitor C1;
Controllable silicon Q2, carry out discharge and recharge, its minus earth for controlling Ignition capacitor C1, anode is connected to the input end of described Ignition capacitor C1;
Trigger loop, for controlling the discharging time of Ignition capacitor C1, controlling pole with described silicon controlled and being connected, control silicon controlled conducting and cut-off;
Catch fire at a high speed speed limit loop, for the discharging time of the C1 of the down-firing electric capacity that controls to run up, is connected, control silicon controlled conducting and cut-off with the control pole of described controllable silicon Q2;
And spark coil T1, it comprises primary air L3 and secondary winding L4, and secondary winding L4 exports high pressure; It is characterized in that: described triggering loop comprises trigger winding L2, resistance R5, R6, diode D4, D5, trigger winding L2 one end ground connection, the other end is extremely connected with the control of described controllable silicon S1 after series diode D4, resistance R9 successively; Diode D5 plus earth, negative electrode is connected between trigger winding and diode D4 anode; Resistance R6 one end ground connection, the other end is connected between the output terminal of resistance R5 and the control pole of described controllable silicon S1;
The described high speed speed limit loop that catches fire comprises resistance R2, R3, R4, filter capacitor C2, controllable silicon Q1 and diode D3, the minus earth of controllable silicon Q1, and anode is connected to the output terminal of charge coil; One end ground connection after resistance R2, R3 parallel connection, the other end is connected with the control pole of controllable silicon Q1; Resistance R4 input end is connected to the control pole of controllable silicon Q1, and output terminal is connected the negative electrode of described diode D3, and the anode of diode D3 is connected to the anode of described diode D4; Filter capacitor C2 one end ground connection, the other end is connected between resistance R4 and diode D3.
2. high speed according to claim 1 is caught fire speed-limiting capacitance formula ignition mechanism, it is characterized in that: described monopulse commutating circuit comprises charge coil L1, diode D1, D2, Ignition capacitor C1, is connected in parallel on the diode D6 at Ignition capacitor C1 two ends and is connected in parallel on the resistance R1 at charge coil L1 two ends, one end ground connection of charge coil L1, the other end connects primary air L3 after series diode D1, D2, Ignition capacitor C1 successively; The plus earth of diode D6, negative electrode is connected to the input end of Ignition capacitor C1; The anode of controllable silicon S1 is connected between the negative electrode of diode D2 and the negative electrode of diode D6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500368.XU CN204175499U (en) | 2014-09-02 | 2014-09-02 | To catch fire at a high speed speed-limiting capacitance formula ignition mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500368.XU CN204175499U (en) | 2014-09-02 | 2014-09-02 | To catch fire at a high speed speed-limiting capacitance formula ignition mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175499U true CN204175499U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420500368.XU Active CN204175499U (en) | 2014-09-02 | 2014-09-02 | To catch fire at a high speed speed-limiting capacitance formula ignition mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN204175499U (en) |
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2014
- 2014-09-02 CN CN201420500368.XU patent/CN204175499U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 312300 Liang Lake Industrial Park, Shangyu District, Shaoxing, Zhejiang, Shangyu Patentee after: ZHEJIANG FENGLONG ELECTRICAL MACHINERY CO., LTD. Address before: 312351 Zhejiang province Shaoxing city Shangyu city Liang Lake Industrial Park Lu Ze West Road Patentee before: Shaoxing Fenglong Motor Co., Ltd. |