Nzira yekuziva sei compression ratio

Kunyangwe iwe uri kuvaka injini nyowani uye uchida metric, kana iwe urikuda kuziva kuti mota yako inoshanda sei nemafuta, unofanirwa kukwanisa kuverenga reshiyo yekumanikidza kweinjini. Pane akati wandei equations anodiwa kuverenga iyo compression reshiyo kana uri kuzviita nemaoko. Vanogona kuita sevakaomesesa pakutanga, asi vanongori geometry yekutanga.

Injini yekutsikirira reshiyo inoyera zvinhu zviviri: chiyero chehuwandu hwegasi mucylinder kana piston iri pamusoro pekurova kwayo (top dead centre, kana TDC), zvichienzaniswa nehuwandu hwegesi kana piston iri pasi payo. . sitiroko (pazasi akafa pakati, kana BDC). Zvichitaurwa zviri nyore, compression reshiyo ndiyo reshiyo yegasi rakadzvanywa kune isina kudzvanywa gasi, kana kuti musanganiswa wemhepo negasi waiswa sei mukamuri yekupisa isati yabatidzwa ne spark plug. Iyo denser iyi musanganiswa inokodzera, zviri nani kupisa uye iyo yakawanda simba inoshandurwa kuita simba reinjini.

Pane nzira mbiri dzaungashandisa kuverenga chiyero chekumanikidza cheinjini. Yekutanga ibhuku remanyorerwo, rinoda kuti uite masvomhu ese nemazvo sezvinobvira, uye yechipiri-uye pamwe ndiyo inonyanya kufarirwa-inoda kuti geji yekumanikidza iiswe mu cartridge isina chinhu spark plug.

Nzira 1 ye2: Edza chiyero chekumanikidza nemaoko

Iyi nzira inoda kuyerwa chaiko, saka zvakakosha kuve nematurusi akanyatsojeka, injini yakachena, uye kuongorora basa rako kaviri kana katatu. Iyi nzira yakanakira avo vari kuvaka injini uye vane maturusi paruoko, kana avo vatove neiyo injini yakabviswa. Kuti ushandise nzira iyi, zvinotora nguva yakareba kwazvo kuparadzanisa injini. Kana uine mota yakaungana, skroka pasi uye shandisa nzira 2 ye2.

Zvinhu zvinodiwa

• Nutrometer
• Calculator
• Degreaser uye rag rakachena (kana zvichidikanwa)
• Bhuku remugadziri (kana bhuku remuridzi wemotokari)
• micrometer
• Notepad, peni uye bepa
• mutongi kana tepi chiyero (inofanirwa kunge yakanyatso kurongeka kune millimeter)

Danho 1: Geza injini Nyatsochenesa injini cylinders uye pistons ane degreaser uye rag yakachena.

Nhanho yechipiri: Tsvaga saizi yegomba. Bore geji ine chikero chinoshandiswa kuyera dhayamita yegomba kana, munyaya iyi, cylinder. Chekutanga tarisa dhayamita yehumburumbira uye gadzirisa nebore geji uchishandisa micrometer. Isa chiyero chekumanikidza muhumburumbira woyera dhayamita yakabhowa kakawanda munzvimbo dzakasiyana mukati mehumburumbira uye nyora zviyero. Wedzera zviyero zvako uye ugovane nehuwandu hwawakatora (kazhinji matatu kana mana anokwana) kuti uwane avhareji yedhayamita. Kamura chiyero ichi ne 2 kuti uwane avhareji yegomba radius.

Danho rechitatu: Verenga saizi yehumburumbira. Uchishandisa mutongi wakarurama kana tepi chiyero, pima urefu hwehumburumbira. Eresa kubva pasi kusvika kumusoro chaiko, kuve nechokwadi chekuti mutongi wakatwasuka. Iyi nhamba inoverenga sitiroko, kana nzvimbo, iyo piston inokwira kumusoro kana pasi pasi cylinder kamwe chete. Shandisa fomula iyi kuverenga huwandu hwehumburumbira: V = π r² h

Danho rechina: Sarudza huwandu hwekamuri yekupisa. Tsvaga vhoriyamu yekamuri yekupisa mugwaro remuridzi wemotokari yako. Vhoriyamu yekamuri yekupisa inoyerwa mu cubic centimeters (CC) uye inoratidza kuti yakawanda sei chinhu chinodiwa kuzadza kuvhurwa kwekamuri yekupisa. Kana uri kugadzira injini, tarisa kune bhuku remugadziri. Zvikasadaro, tarisa bhuku remuridzi wemotokari.

Nhanho 5: Tsvaga iyo Compression Height yePiston. Tsvaga kureba kwekumanikidza kwepiston mubhuku rekushandisa. Chiyero ichi chinhambwe chiri pakati pemutsara wepakati pegomba repini nepamusoro pepiston.

Nhanho yechitanhatu: Edza vhoriyamu yepiston. Zvekare mubhuku, tsvaga huwandu hwedome kana musoro wepiston, wakayerwawo mucubic centimita. Piston ine positive CC value inogara ichinzi "dome" pamusoro pekumanikidza kwepiston, nepo "poppet" ibasa rakashata rekuverengera homwe dzevharuvhu. Kazhinji piston ine zvese dome uye poppet, uye vhoriyamu yekupedzisira ndiyo hwerengedzo yemabasa ese (dome minus poppet).

Nhanho yechinomwe: Tsvaga mukaha uripo pakati pepiston nedeki. Verenga huwandu hwemvumo pakati pepiston nedeki uchishandisa kuverengera kunotevera: (Bore [chiyero kubva padanho 2] + Bore dhayamita × 0.7854 [nguva dzose inoshandura zvese kuita cubic inches] × chinhambwe pakati pepiston nedhiza panzvimbo yepamusoro yakafa [TDC] )

Nhanho 8: Sarudza Pad Vhoriyamu. Eresa ukobvu uye dhayamita yehumburumbira musoro gasket kuona iyo gasket vhoriyamu. Ita izvi nenzira yakafanana sezvawakaita kune gap redhiki (danho rechinomwe): (gomba [kuyera kubva padanho 7] + gomba dhayamita × 8 × gasket ukobvu).

Nhanho 9: Verenga iyo compression ratio. Verenga iyo compression ratio nekugadzirisa iyi equation:

Kana iwe ukawana nhamba, iti 8.75, yako compression ratio ichave 8.75: 1.

• MabasaA: Kana iwe usingade kufunga nhamba iwe pachako, kune akati wandei online compression ratio calculator iyo inokushandira iwe; Dzvanya pano.

Nzira 2 ye2: shandisa geji yekumanikidza

Iyi nzira yakanakira avo vane injini yakavakwa uye vanoda kutarisa kudzvanywa kwemota kuburikidza ne spark plugs. Unoda rubatsiro rweshamwari.

Zvinhu zvinodiwa

• kumanikidza geji
• Dzomoto chivhariso chipanera
• Basa magirovhosi

Danho rechitatu: Dziyisa injini. Mhanya injini kusvika yadziya kusvika kune yakajairika tembiricha. Iwe hausi kuda kuita izvi kana injini ichitonhora nekuti haugone kuverenga kwakaringana.

Nhanho 2: Bvisa spark plugs. Dzima kupisa zvachose uye bvisa imwe ye spark plugs kubva patambo inoibatanidza kune muparadzi. Bvisa spark plug.

• Mabasa Kana ma spark plugs ako akasviba, unogona kushandisa izvi semukana wekuachenesa.

Danho rechitatu: Isa pressure gauge. Isai kamuromo kejeji yepressure mugomba mainge makasungirirwa spark plug. Zvakakosha kuti muromo unyatsopinzwa mukamuri.

Danho rechina: Tarisa humburumbira. Paunenge wakabata geji, ita kuti shamwari itange injini uye ikurumidze mota kwemasekonzi mashanu kuti ugone kuverenga chaiko. Dzima injini, bvisa geji repi uye dzorera spark plug ne torque chaiyo sekurairwa kwebhuku. Dzokorora matanho aya kusvikira waedza silinda imwe neimwe.

Danho rechishanu: Ita muedzo wekumanikidza. Silinda yega yega inofanirwa kunge iine pressure yakafanana uye inofanirwa kuenderana nenhamba iri mubhuku.

Nhanho 6: Verenga PSI kune Compression Ratio. Verenga chiyero chePSI kune compression ratio. Semuenzaniso, kana uine geji yekuverenga ingangoita gumi nemashanu uye iyo compression reshiyo inofanirwa kunge iri 15: 10, ipapo PSI yako inofanira kunge iri 1, kana 150x15/10.