Dab tsi yog Hom Spark Plugs?

Raws li tus nqi calorific, muaj hom txias thiab kub hom; Raws li cov khoom siv electrode, muaj nickel alloy, silver alloy, platinum alloy, thiab lwm yam.; Yog hais tias nws yog kev tshaj lij, cov hom ntawm lub txim hluav taws xob feem ntau yog raws li hauv qab no:
1. Quasi-type spark plug: Lub tsho insulator yog me ntsis retracted rau hauv lub ntsej muag kawg ntawm lub plhaub, thiab sab electrode yog sab nraum lub ntsej muag kawg ntawm lub plhaub. Nws yog hom siv dav tshaj plaws [5].
2. Spark plug nrog protruding rim: lub insulator tiab ntev thiab protrudes tshaj lub ntsej muag kawg ntawm lub casing. Nws muaj qhov zoo ntawm kev nqus cua kub loj thiab muaj peev xwm tiv thaiv fouling zoo, thiab tuaj yeem ua kom txias ncaj qha los ntawm cov cua nkag los txo qhov kub, yog li nws tsis yooj yim rau hluav taws kub, yog li nws muaj qhov dav thermal adaptability ntau yam [5] .
3. Electrode hom spark plug: Nws cov electrode yog nyias nyias, muaj zog sparks thiab zoo ignition muaj peev xwm. Nws tuaj yeem ua kom lub cav pib sai thiab ntseeg tau txawm tias thaum lub caij txias heev. Nws muaj ntau yam thermal ntau thiab tuaj yeem ua tau raws ntau lub hom phiaj [5].
4. Lub tog raj kheej lub tog raj kheej: Nws lub plhaub thiab cov ntsia hlau xov yog ua rau hauv cov duab tapered, yog li nws muaj peev xwm tuav tau lub foob zoo yam tsis muaj lub gasket, yog li txo qhov loj ntawm lub txim hluav taws xob, uas muaj txiaj ntsig zoo rau lub cav tsim [5 ].
5. Polar hom spark plug: Feem ntau muaj ob los yog ntau tshaj sab electrodes. Qhov kom zoo dua yog txhim khu kev qha ignition thiab qhov sib txawv tsis tas yuav tsum tau kho ntau zaus. Yog li ntawd, nws yog feem ntau siv nyob rau hauv ib co roj av cav qhov twg cov electrode yog ib qho yooj yim rau ablate thiab lub txim plug qhov tsis sib xws tsis tuaj yeem kho ntau zaus [5].
6. Nto spark plug: uas yog, ntog hom. Nws yog hom txias tshaj plaws ntawm lub txim hluav taws xob. Qhov sib txawv ntawm qhov chaw electrode thiab lub plhaub kawg lub ntsej muag yog concentric [5].
7. Txheem thiab protruding spark plugs
Tus qauv txim hluav taws xob yog ib qho hluav taws xob hluav taws xob ib leeg nrog lub tiab kawg ntawm lub insulator me ntsis qis dua lub ntsej muag kawg ntawm lub tsev. Nws txais cov qauv kev tua hluav taws uas feem ntau siv dav hauv cov tshuab sab-valve. Yuav kom paub qhov txawv ntawm "protruding type" uas tshwm sim tom qab, cov qauv no hu ua "tus qauv" [6].
Protruding spark plugs yog Ameslikas tsim rau overhead valve engines. Nws insulator tiab protrudes los ntawm threaded kawg lub ntsej muag ntawm lub tsev thiab txuas mus rau hauv lub combustion chamber. Nws absorbs cua sov ntau dua hauv qhov sib tov sib xyaw, thiab muaj kev ua haujlwm siab dua ntawm kev so nrawm kom tsis txhob fouling; nyob rau hauv kev kub ceev, vim nyob rau sab saum toj txoj hauj lwm ntawm lub valve, inhaled airflow yog qhia nyob rau hauv lub tiab ntawm lub insulator, txias nws, thiaj li hais tias qhov siab tshaj plaws kub tsis nce. Ntau dua, yog li cov thermal range loj dua. Protruding spark plugs tsis haum rau sab-valve engines vim muaj ntau lem nyob rau hauv lub intake duct thiab airflow muaj me ntsis cuam tshuam rau txias lub insulator tiab [6].
8. Ib leeg-sab ncej thiab ntau-sab ncej spark plugs
Cov tsoos ib leeg-sab electrode spark plug muaj qhov tsis pom tseeb, uas yog, sab electrode npog qhov chaw electrode. Thaum muaj hluav taws xob hluav taws xob ntau tshwm sim ntawm ob tus ncej, qhov sib xyaw ntawm qhov sib txawv ntawm qhov sib txawv yuav nqus cov cua sov ntawm lub txim thiab raug qhib los ntawm ionization los ua "qhov hluav taws kub". Qhov chaw uas cov tub ntxhais hluav taws tau tsim yog feem ntau nyob ze rau sab electrode, thiab cov cua sov yuav nqus tau ntau dua los ntawm sab electrode, uas yog, " nplaim taws cuam tshuam" ntawm cov electrode, uas txo lub txim hluav taws xob thiab kev ua haujlwm flashover. [6].
Yog li ntawd, nyob rau xyoo 1920, peb-sab ncej hluav taws xob tau tshwm sim. Piv nrog rau ib sab ncej, qhov sib txawv ntawm cov ncej ntau sab yog tsim los ntawm cov ntu ntu ntawm ntau sab electrodes (punched rau hauv lub voj voog) thiab lub cylindrical nto ntawm qhov chaw electrode. Qhov sib txawv ntawm qhov sib txawv no tshem tawm qhov teeb meem ntawm sab electrodes npog qhov chaw electrode. Qhov tsis zoo yog tias nws nce qhov "kev nkag tau" ntawm lub txim. Lub txim hluav taws xob loj dua thiab nws yooj yim dua nkag mus tob rau hauv lub tog raj kheej, uas yuav pab txhim kho qhov sib xyaw ntawm cov khoom sib xyaw thiab txo cov pa tawm. Txij li cov ncej ntau sab muab ntau txoj kab hluav taws xob, lub neej kev pab cuam txuas ntxiv thiab qhov kev ntseeg ntawm qhov hluav taws xob tau txhim kho. Nws yuav tsum tau taw qhia rau ntawm no tias tsuas yog ib qho channel tuaj yeem nyem thaum lub sijhawm tso tawm, thiab nws tsis tuaj yeem ua rau ntau tus ncej rau flash rau tib lub sijhawm. Kev yees duab ceev ceev ntawm cov txheej txheem tso tawm qhia qhov no [6].
Cov ntawv tom qab (cov ntawv tom qab tus nqi calorific) D, J, thiab Q hauv cov qauv hluav taws xob hauv tsev sawv cev rau ob sab ncej, peb sab ncej, thiab plaub sab ncej raws li [6].
9. Nickel-based alloy thiab tooj liab core electrode spark plugs
Qhov tseem ceeb tshaj plaws uas yuav tsum tau ua rau electrodes txuas mus rau hauv lub combustion chamber yog tsis kam mus rau ablation (hluav taws xob thiab tshuaj corrosion) thiab zoo thermal conductivity. Nrog rau kev txhim kho cov ntaub ntawv tshawb fawb thiab txheej txheem thev naus laus zis, cov ntaub ntawv electrode tau ntsib kev hloov pauv ntawm cov hlau, npib tsib xee, npib tsib xee-raws li alloys, cov khoom siv tooj liab-tooj ​​liab, thiab cov hlau muaj txiaj ntsig. Cov khoom siv feem ntau siv niaj hnub no yog nickel-based alloys. Feem ntau, cov hlau ntshiab muaj cov thermal conductivity zoo dua li cov hlau, tab sis cov hlau ntshiab (xws li npib tsib xee) yog cov rhiab heev rau cov tshuaj corrosion ntawm combustion gases thiab cov khoom deposits lawv tsim dua alloys. Yog li, cov khoom siv hluav taws xob siv cov nickel puag nrog cov ntsiab lus xws li chromium, manganese, thiab silicon ntxiv. Chromium txhim kho kev tiv thaiv hluav taws xob corrosion, thiab manganese thiab silicon txhim kho cov tshuaj tiv thaiv corrosion, tshwj xeeb tshaj yog cov tshuaj tiv thaiv corrosion rau teeb meem sulfur oxides [6].
10. Ordinary thiab tsis kam spark plugs
Raws li lub tshuab hluav taws xob tawm hluav taws xob, lub txim hluav taws xob yog qhov sib txuas txuas txuas hluav taws xob hluav taws xob hluav taws xob cuam tshuam cuam tshuam. Txhawm rau tiv thaiv kev cuam tshuam muaj zog rau hauv xov tooj cua los ntawm hluav taws xob hluav taws xob los ntawm flashover, tiv thaiv kev sib txuas lus hauv xov tooj cua thiab tiv thaiv kev ua haujlwm tsis zoo ntawm cov khoom siv hluav taws xob hauv tsheb, cov teb chaws thoob plaws ntiaj teb tau nce kev txhim kho ntawm cov hluav taws xob tiv thaiv txij li xyoo 1960. Peb lub teb chaws kuj tau tshaj tawm cov qauv ntawm lub teb chaws rau qhov yuav tsum tau siv hluav taws xob sib xyaw ua ke, uas ua rau muaj kev txwv nruj ntawm cov xov tooj cua cuam tshuam cov yam ntxwv ntawm lub tsheb uas tau tsav los ntawm lub tshuab hluav taws xob hluav taws xob. Yog li ntawd, qhov kev thov rau cov hluav taws xob hluav taws xob kuj tau nce ntau heev. Tsis muaj qhov sib txawv loj hauv cov qauv ntawm cov kab hluav taws xob tiv thaiv thiab hom zoo tib yam. Nws yog tsuas yog hais tias tus neeg xyuas pib sealant nyob rau hauv lub insulator yog hloov mus rau ib tug kuj sealant.