(Solved): - A four stroke Diesel cycle operated internal combustion engine combustion chamber pressure at the ...

- A four stroke Diesel cycle operated internal combustion engine combustion chamber pressure at the end of the heat input process is $69.25\times 10^5\mathrm{Pa}$. The temperature at the end of the heat output is $45^{\circ }\mathrm{C}$, at the beginning of heat input is $622.17^{\circ }\mathrm{C}$, at the end of the heat input is $1524.86^{\circ }\mathrm{C}$ and at the end of the power stroke is $605.83^{\circ }\mathrm{C}$. a) Find the temperatures and pressures at the characteristics point of the cycle. b) Find the thermal efficiency $\left({\eta }_t\right)$ and the indicated pressure of the cycle $\left(P_{ml}\right)$ (Seilinger Cyele Indacated Pressure- $P_{\mathrm{m}i}$ and Thermal Efficiencey - ${\prod }_T$ is given as below) $\begin{array}{l}Pmi={\eta }_T\cdot \frac{P_1\cdot {\epsilon }^k}{(k-1)(\epsilon -1)}\left[\rho -1+k\rho \left({\epsilon }_g-1\right)\right]\\ {\eta }_T=1-\frac{1}{{\epsilon }^{k-1}}\cdot \frac{\rho \cdot {\epsilon }_g^k-1}{\rho -1+k\cdot \rho \cdot \left({\epsilon }_g-1\right)}\end{array}$