University:
Swansea University
Course:
EG-086 | Engineering Science
Academic year:

2023
Views:

278

Pages:

4
Author:

Lloyd R.

Dual Combustion cycle) (5) This Cycle (also called the limited pressure cycle is cycle) is a or mixed Combination of Otto and Diesel ajcles, in a way, that heat is added partly at constant volume and parth at Constant pressure; the advantage of which is that time is available to fuel for Combustion. move Because of lagging characteristics of fuel this cycle is invariably wed for dieses and hot spot ignition engine The dual Combustion Cycle Consists of the following Operations: (1)1-2- Adiabatic Compression (ii) 2-8-Addition of heat at Constant Volume. post (1) 3-4- Additional of heat at constant pressure. (iv) 4-5 - Adiabatic expansion (v) 5-1- Rejection of heat at constant Volume 20 is fol Adiababe Acbiabatic Consider 1 kg of air. Total heat supplied = Heat supplied cluring heat supplied during the operation the operation 3-4 =W 2-3+ er(T3-12) + Cp(T4-13) (1) 5-1 = Cr (T5-T) the process 5-1 Heat vejected during t Suite NASM Work done = Heat supplied-Heat rejected. how = ev (73-Tc) + Cp(TH-73) - Cv (Ts-Ti) Now, Ndual (Cv (T3-12) + Cp (Ty-Ts)-(v (T5-T1) Work clone Heat Supplied CV (TS-T2) + CP(Th-Ts) The efficiency of Deisel cycle and Dual Combustion cycle is greater len than Otto cylle. 21 than 4 For the Sam Comprensive ratto Diesel C > Qualatto Cycle cycle * If Compressive ratio increases then efficiency increases.