CN204493055U - A kind of four-cylinder gasoline engine ignition system - Google Patents
A kind of four-cylinder gasoline engine ignition system Download PDFInfo
- Publication number
- CN204493055U CN204493055U CN201420827362.3U CN201420827362U CN204493055U CN 204493055 U CN204493055 U CN 204493055U CN 201420827362 U CN201420827362 U CN 201420827362U CN 204493055 U CN204493055 U CN 204493055U
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- China
- Prior art keywords
- boss
- flywheel
- igniter
- fire signal
- ignition system
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- 238000002485 combustion reaction Methods 0.000 abstract description 9
- 239000000523 sample Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of four-cylinder gasoline engine ignition system, comprise engine speed sensor, fire signal flywheel, igniter and high-voltage ignition coil, wherein fire signal flywheel is assemblied on engine crankshaft, flywheel angular velocity is identical with angular velocity of crankshaft, key is: fire signal flywheel is arranged four boss, first boss and the 4th boss symmetrical, between the first boss and the 4th boss, be evenly arranged the second boss and the 3rd boss.The rotating speed that combustion engine speed probe reads fire signal flywheel is converted into electric wave, be delivered to igniter microprocessing unit, igniter microprocessing unit is according to the requirement of tach signal according to setting, igniting power on/off signal is exported, by the pulse of high-voltage ignition coil conveying high-pressure to spark plug to high-voltage ignition coil.The ignition system of this structure, as the electronic-controlled ignition system simplified, can cancel distributor structure, and structure is simple, with low cost.
Description
Technical field
The utility model relates to a kind of ignition system of petrol engine motor.
Background technique
Usually use the internal-combustion engine of the fuel such as vapour oil and gas at present, possess petrolic feature, their Iganition control system is mainly divided into electronic control and Mechanical course.Traditional multi-cylinder gasoline engine adopts mechanically controlled type igniting (distributor structure) fallen behind, this complex structure, relate to component more, rate of fault is high, Installation and Debugging inconvenience, nearly more than ten years be electronically controlled substitute, be mainly electronic fuel injection system (abbreviation EFI), be widely used in the combustion control system of motor car engine, but due to electric injection system, to relate to sensor feedback multisystem many, complex structure, and control program is complicated, particularly cost is high, is not easy to use on small displacement multi-cylinder petrol engine.And the ignition system of existing electric injection system is carried out structure and uses and simplify by this patent, have the control principle of EFI ignition system, structure is simple, and relate to component few, on former distributor formula basis, component are with low uncertainty, and cost is low, without the need to debugging direct use.This structure is mainly the digital ignition system adopting single-chip microcomputer and sensor technology, the control program of ignition system is mainly igniter, this type of igniter can adjustment ignition advance angle within the scope of internal-combustion engine whole service again, can light a fire according to the igniting requirement of each cylinder and ignition order, effectively control the consistent of engine power and fuel economy, but owing to adopting this ignition system structure simple, cost is low, relate to sensor few, control program is simple, there is certain shortcoming in relative electric injection system: the delivery volume 2 that 1) effectively can not control the fuel oil of motor according to the air inflow of motor) can not according to the firing angle of pollutant feedback adjustment motor of engine exhaust and the delivery volume 3 of fuel oil) be control discharge index, Carburetor need carry out precision adjustment and control.
Model utility content
Because the defect existing for above-mentioned prior art, the purpose of this utility model is, provides four-cylinder gasoline engine ignition system, can simplify the requirement that sensor is installed on internal-combustion engine, avoids machinery change larger on distributor internal-combustion engine.
To achieve these goals, by the following technical solutions: a kind of four-cylinder gasoline engine ignition system, comprise engine speed sensor, fire signal flywheel, igniter and high-voltage ignition coil, wherein fire signal flywheel is assemblied on engine crankshaft, flywheel angular velocity is identical with angular velocity of crankshaft, it is characterized in that: fire signal flywheel is arranged four boss, first boss and the 4th boss symmetrical, between the first boss and the 4th boss, be evenly arranged the second boss and the 3rd boss.
The angle of the first boss is the X ° of firing angle fire signal as two cylinders, the angle X ° of the 4th boss, as the firing angle fire signal of another two cylinders, the 1st, 4 boss are symmetrical, 1st, 4 boss symmetrical between be evenly arranged 2 boss, its angle is Y °.Wherein X can be 35 or other numeral.
Fire signal flywheel is connected with I. C. engine crankshaft, together rotates with bent axle, and engine speed sensor reads the rotating speed of fire signal flywheel, changes pulse radio into, then by rat tail by Potential transmission to igniter microprocessing unit (igniter).Igniter is by electric wave period, the running speed of calculation engine, according to the corresponding relation of the engine speed preset and firing angle, calculate and export the output time of fire signal, the i.e. ignition advance angle of motor, engine speed changes, and the output time (ignition advance angle) of fire signal changes; The situation of change of igniter by waveform in each pulse interval and the length of each amplitude, judgement should be lighted a fire by certain cylinder, namely to certain single output circuit output voltage electric current (control power on/off).Igniter is connected by the high-voltage ignition coil of rat tail with every cylinder, every cylinder all has independent high-voltage ignition coil, once the high-voltage ignition coil of igniter and certain cylinder has electric current to pass through, then high-voltage ignition coil produces a high pressure, this high pressure is discharged by spark plug, is formed and once effectively lights a fire.
The utility model structure is simple, good reliability, and cost is low, and control simple, adaptability is good, easy to operate.Both effectively can having controlled the firing time of motor, control combustion characteristic, again without the need to changing on original structure, having reduced complete machine cost on a large scale simultaneously.
Accompanying drawing explanation
Fig. 1 is the catenation principle figure of embodiment.
Embodiment
As shown in Figure 1: this ignition system comprises power connector end mouth, engine speed sensor 2, fire signal flywheel 1, igniter microprocessing unit 3, high-voltage ignition coil 4, rat tail;
When an engine is stopped, because the external world's such as starting electrical machinery makes engine crankshaft rotate according to certain rotating speed, 1, fire signal flywheel rotates with crankshaft-synchronous, engine speed sensor 2 reads the convex signal of fire signal flywheel 1, produce pulsed voltage, thus generation impulsive current, after impulsive current is delivered to igniter microprocessing unit 3, the pulse interval is calculated by igniter microprocessing unit 3, rotating speed and the speed of crankshaft of fire signal flywheel 1 is judged by the pulse interval, determine the initial ignition angle in next crankshaft rotating cycle, when within next week, crankshaft rotating is to this firing angle, igniter microprocessing unit 3 starts output point ignition voltage electric current.Igniter microprocessing unit 3 is by calculating the Pulse length difference in per pulse interval, judge the high-voltage ignition coil 4 fire signal being transported to certain cylinder, form high pressure by high-voltage ignition coil 4 and pass through spark-discharge, the inflammable mixture of engine chamber catches fire under discharge scenario, form burning, work by combustion promotes bent axle autorotation, and motor normally starts.When external world's increase accelerator open degree or load change, engine speed is changed, pulse interval changes, igniter microprocessing unit 3 judges the ignition advance angle under this rotating speed according to the pulse interval, and when within next week, crankshaft rotating is to this firing angle, igniter microprocessing unit 3 starts output point ignition voltage electric current, forms the ignition advance angle change that different rotating speeds is different, to adapt to the combustion characteristic of different rotating speeds.
Claims (2)
1. a four-cylinder gasoline engine ignition system, comprise engine speed sensor, fire signal flywheel, igniter and high-voltage ignition coil, wherein fire signal flywheel is assemblied on engine crankshaft, flywheel angular velocity is identical with angular velocity of crankshaft, it is characterized in that: fire signal flywheel is arranged four boss, first boss and the 4th boss symmetrical, between the first boss and the 4th boss, be evenly arranged the second boss and the 3rd boss.
2. four-cylinder gasoline engine ignition system as claimed in claim 1, is characterized in that: the angle of described first boss is 35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827362.3U CN204493055U (en) | 2014-12-24 | 2014-12-24 | A kind of four-cylinder gasoline engine ignition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827362.3U CN204493055U (en) | 2014-12-24 | 2014-12-24 | A kind of four-cylinder gasoline engine ignition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493055U true CN204493055U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420827362.3U Expired - Fee Related CN204493055U (en) | 2014-12-24 | 2014-12-24 | A kind of four-cylinder gasoline engine ignition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526037A (en) * | 2016-02-05 | 2016-04-27 | 重庆科克发动机技术有限公司 | Ignition control system of gas engine |
-
2014
- 2014-12-24 CN CN201420827362.3U patent/CN204493055U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526037A (en) * | 2016-02-05 | 2016-04-27 | 重庆科克发动机技术有限公司 | Ignition control system of gas engine |
| CN105526037B (en) * | 2016-02-05 | 2017-08-29 | 重庆科克发动机技术有限公司 | A kind of gas engine Iganition control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 |