1. Xa injini ye-diesel isemoyeni, ayingomxube otshayo ongena kwi-cylinder, kodwa umoya. Iinjini ze-diesel zisebenzisa iimpompo ze-fuel-pressure high-pressure to the diesel in the cylinders ngokusebenzisa ii-injection fuel; ngelixa iinjini zepetroli zisebenzisa i-carburetors ukuxuba i-petroli kunye nomoya kwimixube enokutsha, ethi ifunxe kwiisilinda ngeepiston ngexesha lokungena.
2. Ii-injini ze-diesel zi-compression ignition kwaye zeze-compression ignition injini yokutsha yangaphakathi; iinjini zepetroli zibaswe ziintlantsi zombane kwaye zezeenjini zokutsha zangaphakathi ezibasiweyo.
3. Umlinganiselo wokunyanzeliswa kweenjini ze-diesel mkhulu, ngelixa umlinganiselo wokunyanzeliswa kweenjini zepetroli zincinci.
4. Ngenxa yemilinganiselo eyahluka-hlukeneyo yoxinzelelo, ii-crankshafts ze-injini ye-diesel kunye nee-casings kufuneka zimelane noxinzelelo lokuqhuma okukhulu kuneendawo ezifanayo zeenjini zepetroli. Esi sisizathu sokuba kutheni iinjini zedizili zininzi kwaye zininzi.
5. Ixesha lokwenziwa komxube we-injini ye-diesel lifutshane kunexesha lokwenziwa komxube we-injini yepetroli.
6. Ubume begumbi lokutsha le-injini ye-diesel kunye ne-injini yepetroli yahlukile.
7. Iinjini ze-diesel zinzima kakhulu ukuziqalisa kuneenjini zepetroli. Iinjini ze-diesel zineendlela ezahlukeneyo zokuqalisa ezifana ne-injini encinci yepetroli, ukuqala kwamandla aphezulu, ukuqala komoya, njl.; iinjini zepetroli ziqala ngokuqala.
8. Iinjini zedizili ubukhulu becala zixhotyiswe ngezixhobo zokufudumeza; iinjini zepetroli azikho.
9. Isantya se-injini ye-diesel sisezantsi, ngelixa i-injini yepetroli iphezulu.
10. Ngaphantsi kwemeko efanayo yamandla, injini ye-diesel inomthamo omkhulu kwaye injini yepetroli inomthamo omncinci.
11. Inkqubo yokubonelela ngamafutha yahlukile. Iinjini zedizili ziinkqubo zokubonelela ngamafutha ezinoxinzelelo oluphezulu, ngelixa iinjini zepetroli ziziinkqubo zokubonelela ngamafutha e-carburetor kunye neenkqubo zobonelelo lwe-electronic fuel supply.
12. Injongo yahlukile. Iimoto ezincinci kunye nezixhobo ezincinci eziphathwayo (iiseti ezincinci zejeneretha, oomatshini bokucheba ingca, izitshizi, njl. njl.) ikakhulu ziinjini zepetroli; izithuthi ezinzima, izithuthi ezikhethekileyo, oomatshini bokwakha, iiseti zejenereyitha, njl.njl. ziinjini zedizili.