Momwe mungadziwire kuchuluka kwa compression

Kaya mukumanga injini yatsopano ndipo mukufuna metric, kapena mukufuna kudziwa momwe galimoto yanu imayendera mafuta, muyenera kudziwa kuchuluka kwa kuponderezedwa kwa injini. Pali ma equation angapo ofunikira kuti muwerengere kuchuluka kwa compression ngati mukuchita pamanja. Zitha kuwoneka zovuta poyamba, koma kwenikweni ndi geometry yoyambira.

Kuponderezana kwa injini kumayesa zinthu ziwiri: chiŵerengero cha kuchuluka kwa mpweya mu silinda pamene pisitoni ili pamwamba pa sitiroko yake (top dead center, kapena TDC), poyerekeza ndi kuchuluka kwa mpweya pamene pisitoni ili pansi pake. . stroke (pakatikati pakufa, kapena BDC). Mwachidule, chiŵerengero cha kuponderezana ndi chiŵerengero cha gasi woponderezedwa ndi gasi wosakanizidwa, kapena momwe kusakaniza kwa mpweya ndi gasi kumayikidwira m'chipinda choyatsira moto chisanayambe kuyatsidwa ndi spark plug. Kusakaniza kumeneku kumakwanira, kumayaka bwino komanso mphamvu zambiri zimasinthidwa kukhala mphamvu ya injini.

Pali njira ziwiri zomwe mungagwiritse ntchito kuti muwerengere kuchuluka kwa kuponderezana kwa injini. Yoyamba ndi buku lamanja, lomwe limakufunsani kuti muchite masamu molondola momwe mungathere, ndipo yachiwiri-ndipo mwina yofala kwambiri-imafuna kuti mulingo wopimitsira ulowetsedwe mu cartridge ya spark plug yopanda kanthu.

Njira 1 ya 2: Yezerani kuchuluka kwa kuponderezana pamanja

Njirayi imafuna miyeso yolondola kwambiri, kotero ndikofunikira kukhala ndi zida zolondola kwambiri, injini yoyera, ndikuwunika kawiri kapena katatu ntchito yanu. Njirayi ndi yabwino kwa iwo omwe mwina akumanga injini ndi zida m'manja, kapena omwe injiniyo yathyoledwa kale. Kuti mugwiritse ntchito njirayi, zidzatenga nthawi yayitali kwambiri kuti musamasule injini. Ngati muli ndi mota yolumikizidwa, pindani pansi ndikugwiritsa ntchito njira 2 mwa 2.

Zida zofunika

• Nutrometer
• Calculator
• Degreaser ndi chiguduli choyera (ngati kuli kofunikira)
• Buku la wopanga (kapena buku la eni galimoto)
• micrometer
• Notepad, cholembera ndi pepala
• wolamulira kapena tepi muyeso (ayenera kukhala yolondola kwambiri mpaka millimeter)

Gawo 1: Yeretsani injini Tsukani bwino masilinda a injini ndi ma pistoni ndi degreaser ndi chiguduli choyera.

Gawo 2: Pezani kukula kwa dzenje. Bore gauge yokhala ndi sikelo imagwiritsidwa ntchito kuyeza kukula kwa dzenje kapena, pakadali pano, silinda. Choyamba kudziwa pafupifupi awiri a yamphamvu ndi calibrate ndi anaboola gauge ntchito micrometer. Ikani choyezera champhamvu mu silinda ndikuyeza kukula kwake kangapo m'malo osiyanasiyana mkati mwa silinda ndikulemba miyesoyo. Onjezani miyeso yanu ndikugawa ndi zingati zomwe mudatenga (nthawi zambiri zitatu kapena zinayi ndizokwanira) kuti mupeze mainchesi. Gawani muyeso uwu ndi 2 kuti mutenge pakati pa dzenje.

3: Werengani kukula kwa silinda. Pogwiritsa ntchito wolamulira wolondola kapena tepi muyeso, yesani kutalika kwa silinda. Yezerani kuchokera pansi mpaka pamwamba kwambiri, kuonetsetsa kuti wolamulirayo ndi wowongoka. Nambala iyi imawerengera sitiroko, kapena malo, omwe pisitoni imasunthira mmwamba kapena pansi pa silinda kamodzi. Gwiritsani ntchito ndondomekoyi kuti muwerenge kuchuluka kwa silinda: V = π r² h

Khwerero 4: Dziwani kuchuluka kwa chipinda choyaka moto. Pezani kuchuluka kwa chipinda choyaka moto m'mabuku a eni galimoto yanu. Kuchuluka kwa chipinda choyaka moto kumayesedwa mu cubic centimita (CC) ndikuwonetsa kuchuluka kwa zinthu zomwe zimafunika kuti mudzaze kutsegulira kwa chipinda choyaka. Ngati mukupanga injini, onani buku la wopanga. Apo ayi, tchulani bukhu la eni galimoto.

Khwerero 5: Pezani Compression Height ya Piston. Pezani kutalika kwa pisitoni mu bukhuli. Kuyeza uku ndi mtunda wapakati pakati pa dzenje la pini ndi pamwamba pa pistoni.

Khwerero 6: Yezerani kuchuluka kwa pistoni. Apanso mu bukhuli, pezani kuchuluka kwa mutu wa dome kapena pistoni, womwe umayesedwanso mu cubic centimita. Pistoni yokhala ndi mtengo wabwino wa CC nthawi zonse imatchedwa "dome" pamwamba pa kutalika kwa pistoni, pamene "poppet" ndi mtengo woipa wowerengera matumba a valve. Nthawi zambiri pisitoni imakhala ndi dome ndi poppet, ndipo voliyumu yomaliza ndi kuchuluka kwa ntchito zonse ziwiri (dome minus poppet).

Khwerero 7: Pezani kusiyana pakati pa pisitoni ndi sitimayo. Werengani kuchuluka kwa chilolezo pakati pa pisitoni ndi sitimayo pogwiritsa ntchito mawerengedwe otsatirawa: (Bore [muyeso kuchokera pa sitepe 2] + Bore diameter × 0.7854 [nthawi zonse yomwe imatembenuza chilichonse kukhala mainchesi a kiyubiki] × mtunda pakati pa pisitoni ndi sitimayo pakatikati pakufa [TDC] ).

Khwerero 8: Sankhani Pad Volume. Yezerani makulidwe ndi mainchesi a cylinder head gasket kuti muwone kuchuluka kwa gasket. Chitani izi mofanana ndi momwe munachitira ndi kusiyana kwa sitimayo (gawo 7): (dzenje [muyeso kuchokera pa sitepe 8] + dzenje m'mimba mwake × 0.7854 × makulidwe a gasket).

Khwerero 9: Werengani kuchuluka kwa compression. Werengani kuchuluka kwa compression pothetsa equation iyi:

Ngati mutapeza nambala, nenani 8.75, chiŵerengero chanu cha kuponderezana chidzakhala 8.75:1.

• NtchitoYankho: Ngati simukufuna kudziwerengera nokha manambala, pali zowerengera zingapo zapaintaneti zomwe zingakuthandizireni; Dinani apa.

Njira 2 ya 2: gwiritsani ntchito chopimitsira

Njirayi ndi yabwino kwa iwo omwe ali ndi injini yomanga ndipo akufuna kuyang'ana kupanikizika kwa galimotoyo kudzera muzitsulo zotsekemera. Mudzafunika thandizo la mnzanu.

Zida zofunika

• kuthamanga n'zotsimikizira
• Kuthetheka pulagi wrench
• Ntchito magolovesi

Gawo 1: Yatsani injini. Thamangani injini mpaka itenthe mpaka kutentha kwabwino. Simukufuna kuchita izi injini ikazizira chifukwa simuwerenga molondola.

Khwerero 2: Chotsani ma spark plugs. Zimitsani poyatsira kwathunthu ndikudula imodzi mwamapulagi a spark kuchokera ku chingwe cholumikiza ndi wogawa. Chotsani plug spark.

• Ntchito Ngati ma spark plugs anu ndi akuda, mutha kugwiritsa ntchito ngati mwayi kuwayeretsa.

Khwerero 3: Ikani choyezera kuthamanga. Ikani nsonga ya chopimira chopimira mu dzenje lomwe pulagi ya spark idamangidwira. Ndikofunika kuti mphunoyo ilowetsedwe mokwanira m'chipinda.

Khwerero 4: Yang'anani silinda. Pamene mukugwira choyezera, funsani mnzanu kuti ayambe injini ndikuyendetsa galimotoyo kwa masekondi asanu kuti muwerenge bwino. Zimitsani injiniyo, chotsani nsonga yoyezera ndikuyikanso pulagi ya spark ndi torque yoyenera monga momwe zalembedwera. Bwerezani izi mpaka mutayesa silinda iliyonse.

Khwerero 5: Yesetsani kuyesa kuthamanga. Silinda iliyonse iyenera kukhala ndi mphamvu yofanana ndipo iyenera kufanana ndi nambala yomwe ili mu bukhuli.

Khwerero 6: Werengani PSI ku Compression Ratio. Werengerani chiyerekezo cha PSI mpaka compression ratio. Mwachitsanzo, ngati muli ndi geji yowerengera pafupifupi 15 ndipo compression ratio iyenera kukhala 10:1, ndiye kuti PSI yanu iyenera kukhala 150, kapena 15x10/1.