Hauv kev kho tsheb, kho lub valve clearance yog qhov tseem ceeb. Cov txheej txheem no tsis tsuas yog ua kom lub cav ua haujlwm zoo xwb tab sis kuj tseem txhim kho kev nyab xeeb thiab ruaj khov thaum tsav tsheb. Kev kho lub valve kom zoo tuaj yeem tiv thaiv kom tsis txhob muaj qhov tshwm sim los ntawm kev kaw lub valve tsis zoo, yog li txhim kho lub cav efficiency thiab lub zog tso zis.
Muaj cov "kev cai ua haujlwm" tshwj xeeb rau kev kuaj xyuas thiab kho lub valve clearance. Txoj kev hloov kho lub tog raj kheej-los-lub tog raj kheej, raws li cov lus qhia qhia, suav nrog kev tshuaj xyuas thiab kho lub valve tshem tawm rau txhua lub tog raj kheej raws li kev txiav txim tua hluav taws kom ntseeg tau tias kev ua haujlwm zoo ntawm tag nrho cov li qub.
Hauv qhov sib piv, txoj kev hloov kho ob-kauj ruam sai dua thiab siv zog tsawg dua, tab sis nws yuav tsum muaj kev nco zoo dua ntawm cov qauv tsheb sib txawv. Txawm hais tias lawv qhov sib txawv, ob txoj hauv kev tsom mus ua kom tiav tib lub hom phiaj- kom ntseeg tau qhov tseeb thiab ruaj khov ntawm kev ua haujlwm valve.
Thaum kho lub valve clearance, muaj ob peb lub ntsiab lus tseem ceeb kom nco ntsoov. Ua ntej, lub valve tshem tawm rau txhua lub tog raj kheej yuav tsum ua kom zoo ib yam kom ntseeg tau tias lub cav ua haujlwm zoo. Thib ob, ua raws li cov kev cai tshwj xeeb thiab cov kev cai uas tau teev tseg los ntawm cov chaw tsim khoom tsheb thaum lub sijhawm hloov kho, ua tib zoo ua txhua kauj ruam. Tsis tas li ntawd, xav txog qhov cuam tshuam ntawm qhov kub thiab txias ntawm lub valve clearance, kom ntseeg tau tias muaj tseeb thiab tsim nyog hloov kho nyob rau hauv ob qho tib si kub thiab txias cav xeev.
Qhov luaj li cas ntawm lub valve clearance yog ncaj qha cuam tshuam rau lub cav efficiency thiab stability. Yog tias qhov kev tshem tawm ntawm lub valve me dhau, nws tuaj yeem ua rau cov pa xau thiab txo qis kev ua haujlwm ntawm lub cav, thaum qhov kev tshem tawm ntau dhau tuaj yeem ua rau kom tsis txaus noj thiab ua tsis tiav, thiab lwm yam teeb meem. Yog li ntawd, tsis tu ncua xyuas thiab kho lub valve clearance yog ib qho tseem ceeb rau kev tswj kom zoo engine lub lag luam, raws li nws ncaj qha cuam tshuam lub engine lub hwj chim tso zis thiab roj efficiency.
