CN2275292Y - Sparking plug for local heat source - Google Patents
Sparking plug for local heat source Download PDFInfo
- Publication number
- CN2275292Y CN2275292Y CN 96245824 CN96245824U CN2275292Y CN 2275292 Y CN2275292 Y CN 2275292Y CN 96245824 CN96245824 CN 96245824 CN 96245824 U CN96245824 U CN 96245824U CN 2275292 Y CN2275292 Y CN 2275292Y
- Authority
- CN
- China
- Prior art keywords
- heat source
- ignition
- local heat
- engine
- sparking plug
- 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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- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model relates to a sparking plug for local heat source used for increasing ignition quality of engine at low temperature, which is characterized in that a local heat source is added on periphery of an ignition electrode of the sparking plug. When an engine in low temperature starting and normal operating, non-gasified fuel oil mist in a cylinder is vaporized at an ignition point by the local heat source, local hot air mass which has a higher average temperature of gas than the cylinder is formed at periphery of the ignition point, making fuel / air mixture gas easy to ignite in the same ignition energy, and increasing flame core in ignition time so as to increase the ignition quality of the engine.
Description
The utility model relates to a kind of local heat source's spark plug that improves engine low temperature ignition performance.
There is the problem of end warm spot fire difficulty in present existing spark plug, as loses fire and even do not start because of the ignition energy quantitative limitation.Though the spark plug that has structurally changes (as the multiple spot discharge) to some extent, ignition performance is improved little.
The utility model designs a kind of local heat source's spark plug that improves the engine ignition performance at the problem that prior art exists.
The utility model is realized by following manner: a kind of local heat source spark plug is characterized in that: increase a local heat source in the plug ignition electrode perimeter, the as far as possible close ignition point of this local heat source, temperature constant.The value of heating addition when the temperature of thermal source and compression stroke finish is lower than firing temperature (not causing pre-ignition).When engine low-temperature starting-up and operate as normal, this local heat source can make the fuel oil mist of oil that does not gasify in the cylinder in the evaporation gasification of ignition point place, and form the localized heat air mass that a temperature is higher than mean temperature in the cylinder around can making ignition point, feasible combustion takes out-and air gas mixture is easier to light under same ignition energy, and the nucleus of flame when strengthening igniting.Because local heat source is very little, near ignition point and away from end gas, so can not cause malcombustion such as engine knock.
The utility model compared with prior art has the more ignitable advantage of low-temperature working.
Fig. 1 is a kind of electric heating device schematic diagram of the present utility model.
Fig. 2 is an another kind of electric heating device schematic diagram of the present utility model.
Among the figure: 1 earth terminal ignitor, 2 localized heat air mass, 3 local heat sources, 4 heat-insulation layers, 5 spark plug outer walls, 6 local heat source's leads, 7 high-pressure side ignitors, 8 insulated ceramic cores.
Most preferred embodiment of the present utility model as shown in Figure 1 and Figure 2.A kind of local heat source spark plug is characterized in that: increasing a local heat source 3 with spark plug high-pressure side ignitor as shown in Figure 17 at a distance of the periphery of certain distance (guaranteeing not discharge).Local heat source 3 is made by the PTC electroceramics material with thermostatic characteristics.The non-working surface of local heat source 3 is added with heat-insulation layer 4.Heat-insulation layer 4 can reduce the heat radiation of local heat source 3 to reduce energy consumption.The thickness of heat-insulation layer 4 is to guarantee not causing that pre-ignition is for pushing away.An electrode of local heat source 3 is started to exchange fire and is spent wall 5 beyond the Great Wall, and another electrode connects local heat source's lead 6.When engine low-temperature starting-up and operate as normal, local heat source's 3 heating powers.When the temperature of local thermal source 3 reached design load (Curie point of the selection of material), its volume resistance sharply increased, and electric current reduces rapidly, makes its constant temperature in design temperature.The value of heating addition when this design temperature and compression stroke finish need guarantee not cause malcombustions such as pre-ignition.Local heat source 3 raises the gas temperature of pressing close to it, around ignition point, form the localized heat air mass 2 that a temperature is higher than gas mean temperature in the cylinder, make the petrol-air mixture body under same ignition energy, be easier to light, and strengthen the nucleus of flame when lighting a fire.Among Fig. 2, local heat source's 3 lock rings are lived earth terminal ignitor 1, and with the electrode of this electrode as local heat source 3.This makes local heat source's 3 more close ignition points, and size is little, and energy consumption is little.
Claims (1)
1. local heat source's spark plug is characterized in that increasing a local heat source in the plug ignition electrode perimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96245824 CN2275292Y (en) | 1996-11-06 | 1996-11-06 | Sparking plug for local heat source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96245824 CN2275292Y (en) | 1996-11-06 | 1996-11-06 | Sparking plug for local heat source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2275292Y true CN2275292Y (en) | 1998-02-25 |
Family
ID=33918734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96245824 Expired - Fee Related CN2275292Y (en) | 1996-11-06 | 1996-11-06 | Sparking plug for local heat source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2275292Y (en) |
-
1996
- 1996-11-06 CN CN 96245824 patent/CN2275292Y/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 |