İsmail ALTIN, PhD Assistant Professor Karadeniz Technical University Faculty of Marine Sciences Department of Naval Architecture and Marine Engineering TURKEY Karadeniz Technical University Faculty of Marine Sciences Department of Naval Architecture and Marine Engineering TURKEY KARADENİZ TECHNICAL UNIVERSITY Personal web page:

Working of Internal Combustion Engines

1.Introduction to internal combustion engines (ICEs) 2.Main engine components 3.Working of four-stroke engines 4.Working of two-stroke engines 5.Working of Wankel engines 6.Indicating diagrams 7.Animations of ICEs Contents

1. Introduction to internal combustion engines The internal combustion engine (ICE) is a heat engine that converts chemical energy stored in a fuel into mechanical energy, usually made available on a rotating output shaft.

1. Introduction to internal combustion engines…

The cylinder volume at any crank position Instantanenous piston speed Mean piston speed

2. Main engine components Engine block

2. Main engine components… Cylinder head

2. Main engine components… Injector

2. Main engine components… Cylinder

2. Main engine components… Piston

2. Main engine components… Connecting rod

2. Main engine components… Crosshead

2. Main engine components… Crankshaft flywheel

2. Main engine components… Flywheel

2. Main engine components… Camshaft

2. Main engine components… Valvetrain

2. Main engine components… Valvetrain-valve

2. Main engine components… Valvetrain…

2. Main engine components… Valvetrain…

2. Main engine components… Valvetrain…

2. Main engine components… Turbocharger

exhaust intake 3. Working of four-stroke engines

2-stroke Reed Valve intake 4. Working of two-stroke engines

intakeexhaust +: No valves needed Continuous motion  less vibration -: Leaks through seals  low compression ratio  pollution (high levels of HC and CO) 5. Working of Wankel engines

6. Indicating diagrams

6. Indicating diagrams…