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Compresie


RobyL24

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Valoarea 18:1 reprezinta raportul dintre volumul maxim al cilindrului, cu pistonul la punctul mort inferior (BDC), si volumul minim al cilindrului, cu pistonul la punctul mort superior (TDC)

 

O lege importanta a termodinamicii spune ca raportul PV/T este constant, adica PV/T la BDC egal cu PV/T la TDC. Daca se aplica anumite corectii (nu avem gaz ideal), si daca se calculeaza cresterea de temperatura cu micsorarea volumului, se obtine valoarea presiunii la punctul mort superior. Ca date de intrare avem raportul de compresie de 18:1, unde volumul maxim este mai mare de 18 ori fata de volumul minim, presiunea la BDC egala cu presiunea atmosferica si temperatura la BCD 25grdC.

Producatorul specifica Compression ratio 18 , dar cine stie sa o transform in valoarea masurata bari.

Edited by calinus68
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