I-Horsepower iyunithi yamandla enjini. Ungayiguqula kanjani i-km ibe yi-kW? Funda!

Ayini amandla amahhashi? Abalwa kanjani amandla enjini?

Ukuze uthole impendulo yombuzo wokuthi ayini amandla amahhashi, kuzodingeka ubuyele emuva emlandweni wekhulu lesi-XNUMX. Konke kwaqala ngokuthi kwashintshwa izilwane ezimayini. Ukusungulwa kwenjini yesitimu ekwazi ukwenza umsebenzi ofanayo kwaba ngenxa yokuzimisela kwamandla ayo. Umsunguli nonjiniyela oyiNgisi uThomas Savery weza nombono olula futhi ngesikhathi esifanayo obonakalayo ngendlela emangalisayo. Uveze ukuthi amandla alolu phiko angaqhathaniswa nesibalo samahhashi enza umsebenzi ngendlela efanayo ngesikhathi esisodwa. Ngakho, injini yomlilo yangaphakathi, eyenza umsebenzi wamahora angu-24, okwakuhileleke kuwo amahhashi, kwakudingeka ibe namandla angu-10-12 amahhashi.

Nokho, lena kwakungeyona indlela enembe kakhulu yokulinganisa. Eqinisweni, yayingahlangene kangako namandla angempela. Ngo-1782, uJames Watt wasiza isayensi nokuhamba ngezimoto. Wasebenzisa indlela entsha yokubala amandla amahhashi esebenzisa amayunithi asemthethweni. Ubone ukuthi ihhashi enkundleni (i-treadmill) lihamba ibanga elingamamitha angama-55 ngomzuzu owodwa. Wabeka inani lesisindo kumakhilogremu angu-82, okwamvumela ukuba abale umsebenzi owenziwa isilwane. Ngenxa yalokho, unqume ukuthi amandla amahhashi angu-1 alingana no-33 ft x lbf/min. Le yindlela i-watt engu-000 eyakhiwe ngayo.

Amayunithi Amandla - Ukuguqula i-kW ibe i-km

Ngokuhamba kwesikhathi ekuthuthukisweni kobuchwepheshe beyunithi yokushayela, kwavela ubunzima ngokukalwa kwamanani amandla enjini. Lokhu kwakungenxa yemibono eyahlukene esetshenziswa ezweni. Isibonelo, emazweni ase-Anglo-Saxon i-nomenclature yamukelwa Amandla ehhashiesasebenza nanamuhla. I-Horsepower, ngakolunye uhlangothi, idabuka eJalimane futhi ihlotshaniswa kakhulu negama Ku-Pferdester (PS, ihhashi elinamandla). Incazelo ehluke kancane - hp. (Amandla okubhuleka), okungamandla akalwa ku-dynamometer, kucatshangelwa ukumelana kwesistimu yokudlulisela. Okwamanje kwamukelwe ukuthi i-1 hp. ilingana no-0,74 kW.

Indlela yokubala amandla amahhashi?

Uma ubheka ngesitifiketi sokubhalisa, uzothola kuso kuphela inani le-kW, ngenxa yokuba khona kwayo ngokusemthethweni ohlelweni lwamazwe ngamazwe lwamayunithi nezilinganiso (SI). Uma ufuna ukwazi ukuthi imoto yakho inamandla angakanani amahhashi, kufanele uthathe inani elingu-1 kW = 1,36 hp. Isibonelo, injini engu-59 kW ikhiqiza i-80 hp. Endabeni yehhashi le-steam (hp), inani lihluke kancane, kusukela ku-1 kW = 1,34 hp. Ngakho-ke, izimoto ezifanayo ezithengiswa ezimakethe ezahlukene zingase zibe nezimpawu zamandla eyunithi ezihluke kancane. Iqiniso elimangalisayo ukuthi amandla awabalulekile ekusebenzeni kwenjini evuthayo yangaphakathi. Lokhu kungukuphuma kwe-torque, okubaluleke kakhulu ekusebenzeni kahle kwemoto.