Course:Understanding the Basics of I C Engine Lesson 4 Diesel Cycle Presented by : Harshit Aggarwal
ABOUT ME Graduated from NIT Nagpur in 2008 . Cleared Indian Engineering Services (IES-UPSC) Exam . Got the offer letter from most of the Maharatna and Navratna Companies Cleared GATE Examm . Course fee: CONTRIBUTE Course fee: CONTRIBUTE . Follow me on Unacademy at: https://unacademy.in/user/harshit_aggarwal
DIESEL CYCLE (CONSTANT PRESSURE CYCLE) 1-2: Reversible Adiabatic Compression 3-4 Reversible Adiabafic Expansion 2-3: Constant Pressure Heat Addition 4-1: Constant Volume Heat Rejection Qs 3
IMPORTANT TERMS Compression Ratior vi/ v2 . Cut-off Volume =v3-v2 Cut-off Ratio re It is the ratio of the volume after heat addition to the volume before heat addition.rc Va V2 . Expansion Ratio re It is the ratio of volume V. V after expansion to the volume before expansion. =v,
AIR STANDARD EFFICIENCY OF DIESEL CYCLE as CAT -2 CAdiabatic T-1 T-1 CPCTI
0-I Efficienu of diese cle depends on cutr-off sao L compressian sao.
EFFECT OF VARIATION OF CUT-OFF RATIO ON EFFICIENCY Less slope more slop slope as . With increase in cut-off ratio, the heat rejection occurs at a constantrate because heat rejection occurs at constant volume and slope of constant volume lines is greater than slope of constant pressure lines. . With increase in cut-off ratio, efficiency decreases of a diesel cycle.
Cleared UPSC ESE twice with Rank 63 and 90 in mechanical engg. Got 99 percentile in GATE. Cracked ONGC, BHEL,ISRO, SAIL, GAIL successfully