CN1013509B - Electric squib - Google Patents
Electric squibInfo
- Publication number
- CN1013509B CN1013509B CN 89100656 CN89100656A CN1013509B CN 1013509 B CN1013509 B CN 1013509B CN 89100656 CN89100656 CN 89100656 CN 89100656 A CN89100656 A CN 89100656A CN 1013509 B CN1013509 B CN 1013509B
- Authority
- CN
- China
- Prior art keywords
- cavity
- igniting
- electric heating
- petrol engine
- cylinder
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
Landscapes
- Spark Plugs (AREA)
Abstract
The present invention relates to an electric heating igniting tube which is a component for directly igniting in an ignition system of a petrol engine (a gas engine), and the present invention can replace a sparking plug to be arranged on a cylinder cover. An electric heating wire is wound outside the electric heating igniting tube, and a steel tube can be heated to 400 DEG C to 550 DEG C within 1 to 2 minutes after a power supply is switched on. After a compression stroke starts, mixed steam is pressed into the steel tube, and 'hot face combustion ' similar to preignition occurs when a piston is approach to an upper dead point. When the pressure of combusted gas exceeds the pressure of a cylinder, the combusted gas is converged with flame to rush out of a tube opening together, and thus, the mixed steam is ignited to start the petrol engine. After the petrol engine normally runs, the power supply can be cut off, definite temperature of the steel tube is maintained by the running heat quantity of the petrol engine, and an ignition action is continued to be exerted.
Description
The present invention relates to a kind of ignition mechanism that is used for internal-combustion engine, particularly petrol engine, the device bottom has it is installed on screw thread in the cylinder spark plug screw, and the igniting cavity is arranged in the device, and there is the mouth that communicates with cylinder the cavity lower end.
The used ignition system of petrol engine before the present invention is open mainly contains storage battery, ignition coil system and magneto ignition system two big classes.The common feature of this two classes ignition system is that the low tension that will be exported by storage battery or magnetogenerator is distributed to each spark coil with distributor, by spark coil low tension is upgraded to high-tension electricity, and introducing places the spark plug of cylinder, make high-tension electricity on spark plug, produce small electrical spark, with the mixed steam in the cylinder that ignites.Existing ignition system has following deficiency: 1. the parts of ignition system are many, complex structure, and the parts of high-speed motion are all arranged.Therefore, ignition system easy break-down; 2. the parts manufacture difficulty is big, cost of production is higher; 3. ignition energy is little, is unfavorable for that the combustor inner cylinder process finishes rapidly, influences gear efficiency.
U.S. Pat-4075996 discloses a kind of external-burning ignition system of internal-combustion engine, its objective is to utilize a kind of novel hammering type ignition by compression device with the further combustion process of improving mixed steam in the cylinder, reduces the discharging of poisonous fume.This system is made of the peripheral hardware fire chamber that communicates with cylinder of being located at cylinder upper, the igniting hammer by the drive coil driving that is arranged at this chamber top, procedure control unit and other auxilliary parts that belong to.This system is by low pressure distributor, procedure control unit controlling and driving coil switch power when lighting a fire operation, make the igniting hammer under the magnetic force of drive wire, produce high speed hammering compressed action, make the interior mixed steam of peripheral hardware fire chamber by compression ignite, and then the burning of the mixed steam in the cylinder that ignites, more existing igniting system of the mechanism of this patent
It is more complicated to unite, and is difficult to realize, and has both made and can work, also easier generation fault.
The purpose of this invention is to provide a kind of prior art deficiency that overcomes, mechanism is simple, easily manufactured, movement-less part, using effect reliable, the ignition mechanism of higher ignition energy is arranged.
Purpose of the present invention realizes by electric squib.Electric squib is that a bottom has it is installed on screw thread in the cylinder spark plug screw, the igniting cavity is wherein arranged, there is the mouth that communicates with cylinder the cavity lower end, the cavity upper end closed, the outside is provided with the electric heating equipment with the tubular member of insulating material, can be heated to 400-550 ℃ with the igniting cavity---as electric heating wire---after the energising of electric heating equipment.Above-mentioned electric squib is installed on the cylinder, the electric heating equipment on it is linked by switch and power supply can replace ignition system of the prior art.The igniting cavity promptly is heated after the electric heating equipment on the electric squib is by electricity, utilizes this moment the piston stroking upward motion in the petrol engine compression stroke mixed steam in the cylinder can be pressed in the igniting cavity of electric squib.The mixed steam that enters the igniting cavity promptly is heated, and continues upstroke with piston simultaneously, and the pressure and temperature of the gas in the cavity raises gradually, waits to surpass lag phase, after the mixed steam in the igniting cavity reaches certain pressure and temperature spontaneous combustion takes place promptly.Wait to light a fire when the pressure of burnt gas surpasses inner cylinder pressure in the cavity, flame and burnt gas are together gone out the igniting cavity, and the mixed steam in the cylinder is lighted.Thereby make the petrol engine entry into service.After petrol engine turns round a period of time (about 2-3 minute), can cut off the power supply of electric heating equipment on the electric squib, the heat that utilizes the petrol engine running to be produced can make the igniting cavity maintain in the certain temperature range, thereby makes the igniting cavity continue the performance ignition action.
The also available following manner of purpose of the present invention realizes:
With the parameters such as power of testing igniting cavity length, cross-section area and the electric heating equipment of determining electric squib, make it to satisfy when the mixed steam that burns in the igniting cavity sprays the cavity mouth, ignition advance angle is 23 °.
Adopting electric squib to replace existing plug ignition system can make petrol engine normally start and keep normal operation.This be because: the cavity of electric squib has the electric heating equipment outward, and the lower end of body is connected with cylinder body, when the body cavity is heated, the heat of body bottom mainly distributes through cylinder block by conduction pattern, therefore axially certainly existing a temperature gradient along cavity, promptly the temperature on body cavity top must be higher than the bottom.The temperature that is pressed into igniting cavity top by piston stroking upward must be higher than the bottom.The cold mixed steam that is pressed in the igniting cavity by piston stroking upward must be top part elder generation heat, firing at first, and to the burning of cylinder direction, until from the igniting cavity, spraying.The tube wall that is firing simultaneously the zone earlier also is that the combustion vapour that is being fired the district at first heats, and this is kept the temperature gradient in the igniting cavity.When cutting off the power supply of electric heating equipment after gasoline engine starting running a period of time, the tube wall that the zone is being fired in aforesaid elder generation heated phenomenon is earlier proceeded, and the temperature of cavity is remained in 400-550 ℃ the scope.So, the heat with the petrol engine running still can make the igniting cavity keep normal ignition function.
Secondly, the initial combustion of the igniting cavity of electric squib is due to the spontaneous combustion, promptly is similar to " pre-ignition " of petrol engine but this " pre-ignition " and is only limited in cavity in the location.And cylinder block this be the condition of tool " pre-ignition " not under the effect of cylinder radiation system.In other words, the temperature in the electric squib igniting cavity is higher than the temperature in the cylinder, makes it to possess the condition of " pre-ignition ", does not then have the condition of " pre-ignition " in the cylinder.So the mixed steam that is positioned at electric squib is being heated to proper temperature and under (by what piston motion produced) pressure effect spontaneous combustion can taking place, and the mixed steam in the cylinder can only be lighted by the thermojet of igniting cavity ejection.
The parameters such as power of length, cross-section area and the electric heating equipment of electric squib igniting cavity are to mix in the influence igniting cavity that gas is firing and the principal element of ejection mouth of pipe needed time.Can optimize the isoparametric optimum value of power of igniting cavity length, cross-section area and electric heating equipment by experiment, make it to satisfy when the mixed steam that burns in the igniting cavity sprays the mouth of pipe, ignition advance angle is about 23 °.When this condition satisfies, can make petrol engine be in optimum Working.
For guaranteeing the petrol engine proper motion, the power supply of cutting off the electric heating equipment still can make the igniting cavity remain on certain temperature range and unlikely overheated, can radiator be set in the upper end of electric squib.
Advantage of the present invention is as follows:
The present invention compared with prior art, it is simple in structure, and is easily manufactured, particularly movement-less part and easily damaged parts in the system, therefore being in operation to significantly reduce the rate of fault of ignition system.Reduce operation and manufacture cost.And electric squib can be durable in use.
2. the present invention utilizes the thermojet of ejection in the igniting cavity to realize ignition function, and its ignition energy is far above the ignition energy of existing plug ignition system.Therefore, the present invention helps promoting finishing rapidly of combustor inner cylinder process, improves the machine thermal efficiency, reduces the discharging of poisonous fume.
3. the present invention is in service need not power consumption.
4. the present invention is in service except that can ensureing the normal ignition function, and has the tendency of automatic adjusting ignition advance angle.Its reason is as follows:
Propagation of flame speed is to be directly proportional with the rotating speed of petrol engine in petrol engine, and when petrol engine moved in the 2000rpm-5000rpm scope, the amplitude that its ignition advance angle need be adjusted was also little.Therefore, when length, cross-section area and the electric heating equipment power of electric squib igniting cavity are optimum value, when promptly ignition advance angle is 23 ° of left and right sides, can guarantee that petrol engine works in the best condition.
Secondly, the spontaneous combustion of mixed steam is that pressure and temperature with environment adapts period of delay.Wherein particularly responsive to variation of temperature.With in the petrol engine of electric squib, the temperature that improves the cavity of then lighting a fire as rotating speed also will improve thereupon at dress, and this is conspicuous, and temperature improves will make spontaneous combustion shortening period of delay, thereby ignition advance angle is shifted to an earlier date thereupon.This point is also proved in our test.
Accompanying drawing provides the sectional drawing of an example of the present invention.
1 is the body of electric squib among the figure, and it is made by steel or refractory steel.8 are the igniting cavity in the body, and the Fu outside is provided with electric heating wire 2.There is insulating material 3 in the interior outside at electric heating wire 2.4 is one section outside on electric squib hexagonal gabarit part, and instrument (as socket wrench) is puted forth effort when being used for installation or removal.The 5th, be positioned at the radiator of electric squib upper end.6 is lead.The 7th, the pipe lower end be used for cylinder on the screw thread that cooperates of spark plug screw.The 9th, the mouth that igniting cavity 8 and cylinder communicate.But only need in actual the use body is installed in the spark plug screw of cylinder, electric heating wire and automobile power source are connected, and got final product with hand switch control.
Claims (3)
1, internal-combustion engine, the electric squib of petrol engine igniting usefulness particularly, its underpart is useful on it is installed in Luo line in the cylinder spark plug Luo hole, the igniting cavity is wherein arranged, there is the mouth that communicates with cylinder the cavity lower end, it is characterized in that the cavity upper end closed, the cavity outside is provided with electric heating equipment and insulating material, cavity can be heated to 400-550 ℃ after the energising of electric heating equipment.
2, electric squib according to claim 1 is characterized in that the parameters such as power of length, cross-section area and the electric heating equipment of determined igniting cavity can guarantee that ignition advance angle is 23 ° when the mixed gas that burns in the igniting cavity sprays the cavity mouth.
3, electric squib according to claim 1 and 2 is characterized in that there is radiator on its top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100656 CN1013509B (en) | 1989-02-02 | 1989-02-02 | Electric squib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100656 CN1013509B (en) | 1989-02-02 | 1989-02-02 | Electric squib |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1037760A CN1037760A (en) | 1989-12-06 |
| CN1013509B true CN1013509B (en) | 1991-08-14 |
Family
ID=4853959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100656 Expired CN1013509B (en) | 1989-02-02 | 1989-02-02 | Electric squib |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013509B (en) |
-
1989
- 1989-02-02 CN CN 89100656 patent/CN1013509B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1037760A (en) | 1989-12-06 |
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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 | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |