Vacuum brake booster - mudziyo uye musimboti wekushanda

Kudzora kwakaringana kwekudzikisa mota kunokwanisika chete kana huwandu hwekuedza hunoshandiswa nemutyairi kune pedal hunogamuchirwa. Asi mabhureki ane simba emotokari dzemazuva ano anoda kusikwa kwekumanikidza kwakakosha mumabhureki system. Naizvozvo, kutaridzika kwebhureki booster kwave kudikanwa, uye mhinduro yakanakisa ndeye kushandisa vacuum mujini yekudyara yakawanda. Iyi ndiyo nzira iyo vacuum brake booster (VUT) yakaonekwa nayo, iyo ikozvino inoshandiswa pane dzinenge dzose dzekugadzira motokari.

Chinangwa che amplifier

Kuda simba rakawandisa kubva kumutyairi zvinotaridzika zvisina musoro kana paine simba rakadaro riri pedyo sejini yekupisa yemukati. Uyezve, hazvina kutombodikanwa kushandisa michina, yemagetsi kana hydraulic drive mhando. Pane vacuum mune yakawanda yekudyara nekuda kwekupomba kwepistoni, iyo inogona kuiswa nekuishandura kuita mechanical simba.

Basa guru reamplifier nderokubatsira mutyairi paanenge achivhara. Kakawanda uye kwakasimba kudzvanywa pane pedal kunonetesa, iko kurongeka kwekudzora kwekudzora kunoderedzwa. Pamberi pechishandiso chinozoita, mukuwirirana nemunhu, chinokanganisa kuwanda kwekumanikidza mubhureki system, zvese kunyaradza uye kuchengeteka zvichawedzera. Mabhureki masisitimu asina amplifier haagone kusangana pamotokari zhinji.

Amplification scheme

Iyo amplifier block iri pakati peiyo pedal assembly uye main brake cylinder (GTZ) ye hydraulic drive. Iyo inowanzomira kunze kwehukuru hwayo hwakakosha nekuda kwekudiwa kwekushandisa yakakura nzvimbo membrane. Iyo WUT inosanganisira:

• hermetic imba iyo inokutendera iwe kuti uchinje uye uchengetedze akasiyana siyana mumakomba ayo emukati;
• elastic diaphragm (membrane) inoparadzanisa mhepo yemhepo uye vacuum cavities yemuviri;
• pedal stem;
• tsvimbo ye-main brake cylinder;
• chitubu compressing diaphragm;
• control valve;
• chivharo chekutsvaira kubva kune yakawanda yekutora iyo hose inoshanduka yakabatana;
• atmospheric air filter.

Kana iyo pedal isina kudzvinyirirwa, makomba ese ari mudzimba ari pamhepo, iyo diaphragm inotsikirirwa nechitubu chekudzoka chakananga kune pedal stem. Kana dzinde richifambiswa, ndiko kuti, pedal inotsikirirwa, vharuvhu inogoverazve kudzvanywa nenzira yekuti gomba riri kuseri kwe membrane rinotaurirana neakawanda ekutora, uye chiyero chemuchadenga chinochengetwa kune rumwe rutivi.

Kana iyo mota yakashongedzerwa injini yedhiziri isina throttle valve, uye vacuum mune manifold ishoma, ipapo vacuum inogadzirwa nepombi yakakosha inofambiswa neinjini kana yayo yega mota yemagetsi. Pasinei nekuoma kwekugadzirwa, kazhinji, nzira iyi inozviruramisa.

Musiyano wedzvinyiriro pakati pemativi ekunze nemukati mediaphragm, nekuda kwenzvimbo yaro yakakura, inogadzira simba rinobatika rinoshandiswa kune tsvimbo yeGTZ. Inopeta nesimba regumbo remutyairi, ichigadzira simba rekusimbisa. Ivhavha inogadzirisa huwandu hwesimba, kudzivirira kusikwa kwekumanikidzika kwekuwedzera uye kuve nechokwadi chekushanda kwakanaka kwemabhureki. Kutsinhana kwemhepo pakati pemakamuri nemhepo kunoitwa kuburikidza nesefa inodzivirira kuvhara kwemukati makoti. Ivhavha isingadzokeri inosungirirwa muvhavha yevhavha inogadziriswa, iyo isingabvumiri kutarisa kuchinja kwekuchinja muhuwandu hwekutora.

Kuunzwa kwemagetsi mune amplifier

Iyo yakajairika maitiro anga ari kutaridzika mumotokari yevazhinji vabatsiri vemagetsi vanobvisa chikamu chezvinodiwa kubva kumutyairi. Izvi zvinoshandawo kune vacuum amplifiers.

Kana zvichidikanwa kubhureki nekuchimbidza, havasi vese vatyairi vanobata pedal nesimba rinodiwa. Iyo yekukurumidzira braking rubatsiro system yakagadziridzwa, iyo sensor yakavakirwa muiyo VUT chimiro. Inoyera kukurumidza kwekufamba kwetsvimbo, uye nokukurumidza apo kukosha kwayo kunopfuura kukosha kwechikumbaridzo, imwe solenoid inoshandurwa, inobatanidza zvakakwana kukwanisa kwe membrane, kuzarura valve yekudzora kusvika pakakwirira.

Dzimwe nguva zvizere otomatiki kutonga kweVUT kunoshandiswa zvakare. Pakuraira kwemaitiro ekudzikamisa, vacuum valve inovhura, kunyangwe iyo pedal isina kudzvanywa zvachose, uye iyo booster inosanganisirwa mukushanda kwemamwe mabhureki mabhureki pasi pekutonga kwevabatsiri vemagetsi.

Zvinogoneka malfunctions uye kugadzirisa

Pane matambudziko mukuwedzera simba pabhureki pedal. Kana izvi zvikaitika, saka iwe unofanirwa kutarisa VUT nenzira iri nyore - dzvanya pedal kakawanda neinjini yakamira, zvino, uchibata bhureki, tanga injini. Iyo pedal inofanira kufamba imwe chinhambwe nekuda kwevacuum yaonekwa.

Kuputsika kunowanzo kukonzerwa neiyo leaky diaphragm kana control valve kutadza. Iyo dhizaini haina kupatsanurwa, VUT inotsiviwa segungano.

Kugadzirisa kunosanganisira kuisa imwe kukosha kwekurova kwemahara kwetsvimbo. Saka kuti vharuvhu itendeuke panguva yakakodzera, uye panguva imwechete hapana mabhureki ega ega. Asi mukuita, hapana chikonzero cheizvi, ese amplifiers anouya kubva kumugadziri atogadziriswa nemazvo.