Keeb kwm ntawm roj additives
Thawj thiab ob tiam neeg ntxiv: 1960-1990, tus qauv kev ua qauv yog ib hom kab carburetor, thiab cov khoom siv sib piv los daws qhov teeb meem carbon deposition ntawm carburetor (cov tshuaj muaj pes tsawg leeg yog polyisobutylene succinimide)
Xyoo thib peb ntawm cov additives (feem ntau hu ua roj cov khoom muaj nqis): 1990-2010, cov qauv kev ua haujlwm yog ntau lub ntsiab lus EFI (manifold injection) qauv, qhov sib xyaw ua ke yuav daws tau cov teeb meem carbon cov dej khov ntawm qhov hno thiab txais nyiaj hauv EFI kaw lus. , nws cov tshuaj lom neeg muaj pes tsawg leeg yog PIBA (polyisobutylene amine)
Tom qab xyoo 2010, cov qauv ua qauv yog cov qauv siv rau hauv cov cylinder ncaj qha, thiab cov khoom siv sib piv yuav daws tau qhov teeb meem ntawm cov pa carbon deposits nyob rau hauv lub nozzle, piston taub thiab lub tua hluav taws chamber ntawm lub kev txhaj tshuaj tiv thaiv ncaj qha rau hauv lub cylinder. Nws cov tshuaj muaj pes tsawg leeg yog PEA (polyetheramine)