Four Stroke Compression Ignition (CI) Engine

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Presentation transcript:

Four Stroke Compression Ignition (CI) Engine Stroke 1: Air is introduced into cylinder through intake valve Stroke 2: Air is compressed Stroke 3: Combustion (roughly constant pressure) occurs and product gases expand doing work Stroke 4: Product gases pushed out of the cylinder through the exhaust valve A I R Fuel Injector Air Combustion Products Intake Stroke Compression Stroke Power Stroke Exhaust Stroke

Four-Stroke CI Combustion SOI – start of injection EOI – end of injection SOC – start of combustion EOC – end of combustion Fuel mass flow rate Fuel mass burn rate

Diesel Fuel Injection System