VALVE TIMING DIAGRAM OF FOUR CYCLE DIESEL ENGINE PDF file1. Four stroke cycle diesel engine 2. Measuring tape 3. Chalk 4. Piece of paper Theory and Description : The diagram which shows the position of crank of four stroke cycle engine at the beginning and at the end of suction, compression, expansion, and exhaust of the engine are called as Valve Timing Diagram. VALVE AND PORT TIMING DIAGRAMS - idc-online PDF fileVALVE AND PORT TIMING DIAGRAMS Valve timing Diagram A valve timing diagram is a representation of the positions of the crank when the various operations as inlet valve opening, closing, exhaust valve opening and closing and also the beginning and end of various strokes . The valves cannot open and close abruptly; it requires a finite period Valve Timing Diagram of Two Stroke and Four Stroke Engine IntroductionWhy Do We Need Valve Timing Diagram?Valve Timing Diagram For 4-Stroke EngineValve Timing Diagram For 2-Stroke EngineWe always discuss “The air fuel mixture combust to cause the movement of the piston which in turn causes crankshaft rotation” also “The residual of the combustion goes out from the exhaust” but have you ever wonder, How does this intake and exhaust occurs?, How the timing of this intake and exhaust is controlled? The answer is intake and exhaust valve right? But the question arise, How these intake and exhaust valve is controlled? LSee more on mechanicalbooster What is Valve Timing diagram in Four-stroke Engines This is called the Valve Timing Diagram. The following theoretical Valve Timing diagram will illustrate how the events such as the Inlet valve and Exhaust Valve are open and closes in an ideal cycle. See the below Theoretical Valve Timing Diagram for the Four-stroke Engine. VALVE TIMING DIAGRAM OF 4S ENGINE PDF fileBefore starting the engine is supplied with cooling water. The engine is started by means of hand cranking method constant load is applied to the engine. Open the inlet valve of the cooling water and note the amount of water circulated per minute. Ensure no load on the engine. The time taken for consumption of 10 cc of fuel is noted.