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Technical knowledge Series Two wheelers - BikeJinni

Technical knowledge Series Two wheelers - BikeJinni. Bike Engines -Two Stroke/Four Stroke Engines Classification. Engine. 1.Engine Classification- 1.1 Spark Ignition Engines 1.2 Compression Ignition Engines 1.3 Two stroke & Four stroke Engines

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Technical knowledge Series Two wheelers - BikeJinni

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  1. Technical knowledge Series Two wheelers - BikeJinni Bike Engines -Two Stroke/Four Stroke Engines Classification

  2. Engine 1.Engine Classification- 1.1 Spark Ignition Engines 1.2 Compression Ignition Engines 1.3 Two stroke & Four stroke Engines 1.4 Engine Types – Vertical, Horizontal, Inline , V Engine etc 1.5 OHC and DOHC Engines

  3. 1.1 Spark Ignition (SI) Engines • In Spark Ignition Engine or SI Engine- Air-fuel mixture enters into the combustion chamber together. ignition takes place with the help of an electric spark by spark plug. • Usually petrol engines are SI engines. Spark Ignition Engine

  4. 1.2 Compression Ignition (CI) Engines • In Compression Ignition Engine or CI Engine-Air and fuel enters separately into the combustion chamber. Ignition takes place by means of heat generated by the compressed air inside the cylinder. • There is no spark plug • Diesel engines are CI engines

  5. 1.3 Two Stroke Engines • In Two Stroke Engine - • First stroke: is combination of Intake & Compression stroke . • Piston moves up to compress the air/fuel mixture, at the same time intake port is opened which allows fresh mixture to move in the lower part of crankcase. Transfer port helps in moving this fresh mixture from the lower portion to the top of the piston. • Second stroke:This stroke is a combination of power and exhaust strokes. The piston moves down after power stroke, opening the exhaust port at the same time to move burnt gases out of the combustion space.  Second Stroke Power & Exhaust First Stroke Intake & Compression

  6. 1.4 Four Stroke Engine • In Four Stroke Engine - • First is Intake Stroke: Inlet valve is open and the fuel air mixture is drawn in while the piston goes down. • Second is Compression Stroke: Inlet valve is closed and piston moves up, thus compressing the fuel air mixture Before the piston reaches the top the spark plug emits a spark that combust the fuel air mixture. • Third is Combustion Stroke: The piston is forced down due to Combustion of fuel air mixture. Engine power is obtained from this. • Exhaust Stroke: Exhaust valve is open and the piston travels up making the gases to exit from the exhaust valve.

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