आधुनिक आवर् त सारणी ✓ Multiple courses in Single Subscription ✓ Unlimited Access ✓ Live polls & Leaderboard ✓ Interact with Educator ✓ Test Series & Analysis ✓ LIVE Doubt Clearing Session ✓ PDF of Every class आधुनिक आवर् त सारणी Comparison of Otto, Diesel and Dual Cycles ➢ Case 1: Same Compression Ratio and Heat Rejection: Otto cycle has the highest work output and efficiency. Diesel cycle has the least efficiency and Dual cycle having the efficiency between the two. Wifistudy | Neeraj Sir 14 Comparison of Otto, Diesel and Dual Cycles Wifistudy | Neeraj Sir 15 Comparison of Otto, Diesel and Dual Cycles ➢ Case 2: Same Peak Pressure, Peak Temperature and Heat Rejection: The Diesel cycle efficiency is greater than the Otto cycle efficiency and Dual cycle having the efficiency between the two. Wifistudy | Neeraj Sir 16 Comparison of Otto, Diesel and Dual Cycles Wifistudy | Neeraj Sir 17 Internal Combustion Engine and Its Type ➢ An internal combustion engine is a heat engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber that is an integral part of the engine itself. ➢ In 1872, American George Brayton invented the first commercial liquid-fueled internal combustion engine. In 1876, Nicolaus Otto, working with Gottlieb Daimler and Wilhelm Maybach, patented the compressed charge, four-stroke cycle engine. ➢ It is used mainly in all type of automobiles. Wifistudy | Neeraj Sir 18 Internal Combustion Engine and Its Type ➢ According to working cycle completion IC engines are classified as : 1. Two Stroke IC Engine 2. Four Stroke IC Engine ➢ According to fuel ignition mechanism IC engines are classified as : 1. Spark Ignition Engine 2. Compression Ignition Engine Wifistudy | Neeraj Sir 19 Four Stroke IC Engine ➢ A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle. Construction ➢ There is two valves in this type of engine. ➢ Gas movement takes place through valves called inlet and exhaust valve. Wifistudy | Neeraj Sir 20 Working of Four Stroke IC Engine Wifistudy | Neeraj Sir 21 Which of the engine has a spark plug used for igniting the fuel? (A) Petrol (B) Diesel (C) Gas (D) Steam Wifistudy | Neeraj Sir 22 In an IC engine, the connecting rod connects which of the following pair of parts? (A) Piston and crankshaft (B) Cylinder and crankshaft (C) Cylinder and piston (D) None of these Wifistudy | Neeraj Sir 23 ✓ Multiple courses in Single Subscription ✓ Unlimited Access ✓ Live polls & Leaderboard ✓ Interact with Educator ✓ Test Series & Analysis ✓ LIVE Doubt Clearing Session ✓ PDF of Every class .