Isikhathi se-valve esiguquguqukayo - kuyini? Ayini amandla enjini?

Uma ufuna ukuthola kalula ukuthi imoto ine-variable valve timing system, kufanele ubheke ukuqokwa kwenjini. Kuyaziwa ukuthi cishe akunakwenzeka ukubakhumbula bonke. Yiziphi izimpawu okufanele wazi? Okudume kakhulu yi-V-TEC, Vanos, CVVT, VVT-i ne-Multiair. Ngamunye wabo egameni lisho ukwanda kwenani lomoya, noma ushintsho endaweni yama-valve. Funda ukuthi iyini isikhathi semoto nokuthi ukuhlukahluka kuyithinta kanjani idrayivu. uzohamba nathi

Yiziphi izigaba zesikhathi senjini?

Ungakusho kanjani ngendlela elula? Lolu hlelo lulawula ukuvulwa kwama-valve okungenisa nawokukhipha. Lokhu kuzokwenza ngcono ukugeleza kwamagesi phakathi kwegumbi elivuthayo kanye nama-nifolds amaningi okukhiphayo nokukhipha umoya. Lokhu, futhi, kukuvumela ukuthi uthole amandla enjini amaningi ngaphandle kokusebenzisa, isibonelo, i-turbocharger. Isikhathi se-valve esiguquguqukayo sisetshenziswa ngezindlela eziningi. Kodwa-ke, indima yabo njalo ukulawula izikhathi zokuvula ama-valve kuhlu oluthile lwesivinini senjini.

Indlela yokushintsha isikhathi se-valve iyisici esibalulekile

I-CPFR, njengoba le nto ibizwa kafushane, iwucezu olubalulekile lwephazili eyinkimbinkimbi. I-variable valve time mechanism ibizwa nangokuthi i-phaser, variator, phase shifter, noma i-phase shifter. Lesi sici sinesibopho ngokuyinhloko sokulawula i-camshaft nokushintsha indawo yayo ye-angular. Ezimweni eziningi ihlanganiswe nendlela yokusabalalisa. Lokhu kuhumushela ekwenziweni lula komshini ngokwawo kanye nosayizi wedrayivu omncane.

Indlela yokushintsha isikhathi se-valve - izimpawu zokungasebenzi kahle

Njengezinye izingxenye eziningi zemoto, i-KZFR nayo isengozini yokulimala. Ungababona kanjani? Akuzona njalo ezingacacile, futhi ngokuvamile izimpawu zenkinga zihambisana nokunye ukungasebenzi kahle okungenzeka. Nokho, zikhona izimpawu zesici. Uma isistimu yesikhathi se-valve eguquguqukayo yenjini yakho ingasebenzi kahle, cishe uhlangabezana nale:

• ukushintshashintsha kwesivinini sokungenzi lutho;
• ukushaya enjini;
• akukho shintsho ekusebenzeni kwenjini ebangeni eliphansi lejubane;
• ukufiphalisa injini uma ima, isibonelo, erobhothini;
• inkinga ngokuqalisa injini;
• ukusebenza okunomsindo kwe-cold drive.

Ukushayela ngesondo lesikhathi se-valve elimele - yiziphi izingozi?

Ngaphezu kweqiniso lokuthi uzozizwa izinkinga esizibalile ngenkathi ushayela, imiphumela yemishini ingaba mibi. Ukusebenza okungalungile kwendlela yokubeka isikhathi ye-valve kuthinta i-valve shaft ngokwayo. Ungakunaki ukulungiswa kwedrayivu yesikhathi. Akukho okumele ulinde, ngoba umphumela ungase ube umonakalo ongenakulungiseka ku-roller ngokwayo. Futhi-ke isistimu yesikhathi se-valve eguquguqukayo ngeke isebenze kahle futhi kuzoba nenye ingxenye (ebizayo!), Okuzodinga ukushintshwa.

Isebenza isikhathi esingakanani i-valve yesikhathi?

Esibonelweni semishini evela kwa-BMW, ​​i.e. Vanos, singasho lokho isikhathi eside. Ezinjinini ezisebenza kahle nezinakekelwa kahle, izinkinga aziveli kuze kube ngemva kokudlula amakhilomitha angu-200. Lokhu kusho ukuthi ezimotweni ezintsha, umnikazi mancane amathuba okuthi ashintshe le nto. Okubalulekile ukuthi injini isebenza kanjani. Noma yikuphi ukunganaki kuzobonakala endleleni umshini osebenza ngayo. Futhi yini engahamba kahle ohlelweni lwesigaba esiguquguqukayo?

Inzwa yesikhathi se-valve eyonakele - izimpawu

Ungazi kanjani ukuthi i-valve eguquguqukayo yesikhathi solenoid valve inesici? Izimpawu zokulimala zifana nokuhluleka kwe-stepper motor. Iklanyelwe ukugcina isivinini esingaguquki sokungenzi lutho. Uma kunenkinga ngenzwa (i-solenoid valve), injini lapho ingenzi lutho cishe izoba nokuthambekela kokumisa. Akusho lutho uma ushayela ubanda, noma injini eshisayo. Isizathu senkinga singase sibe ukungasebenzi kahle ohlelweni lokulawula noma ukwehluleka komshini. Ngakho-ke, kungcono ukukala kuqala i-voltage ku-valve ye-solenoid, bese ubuyisela izakhi.

Ukushintsha isikhathi se-valve nokushintsha yonke idrayivu

Cishe uqagele ukuthi indlela yokulawula i-valve ingase yehluleke. Futhi lokhu kubonisa ukuthi i-KZFR ayiyona eyaphakade. Ngakho-ke, ngezikhathi ezithile (ngokuvamile ngoshintsho lwesikhathi lwesibili), isondo ngokwalo kufanele lishintshwe. Ngeshwa, isistimu yesikhathi se-valve eguquguqukayo ayilona eshibhile kakhulu ukuyisebenzisa. Kwezinye izimoto, intengo yokuthenga yazo zonke izingxenye zedrayivu, kanye nepompo yamanzi, akufanele idlule ama-euro angama-700-80, noma kunjalo, kukhona amamodeli lapho ibhande lesikhathi elilodwa kuphela libiza okungenani ama-euro ayi-1500-200, ngakho-ke lokhu isamba esikhulu. Inani.

Indlela yokunakekela isistimu yesikhathi se-valve eguquguqukayo? Ukuze kusebenze kahle isistimu yesikhathi se-valve eguquguqukayo, kubalulekile ukugcina kahle iyunithi yamandla. Okubalulekile yizikhawu zokushintsha uwoyela, okufanele zenzeke minyaka yonke noma njalo ngamakhilomitha ayizinkulungwane eziyi-12-15. Futhi khumbula ukuthi ngemva kwesikhathi eside sokungasebenzi, injini akufanele ijikeleze ngaphezu kuka-4500 rpm, ngoba uwoyela olawula ukusebenza komshini ngeke ugeleze lapho usuka epanini likawoyela.