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Video Engine Technology
Video Piston Engines
Video Combustion Engine 1
Video Combustion Engine 2
Video Combustion Engine 3
Video Combustion Engine 4
Video Combustion Engine 5
Video Combustion Engine 6
Video Combustion Engine 7
Video Combustion Engine 8
Video Combustion Engine 9

Video Four-stroke Engine
Video Intake Stroke
Video Compression Stroke
Video Combustion Stroke
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Video Fish Hook Curve Diagram
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Video Equaliser Shafts 1
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Video Inertial forces + -torques
Video Int. Combustion Engine
Video Petrol Engine
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Video Torque 1
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Video Torque 3
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Video Combustion Engine 1
Video Combustion Engine 2
Video Combustion Engine 3
Video Combustion Engine 4

Video Piston Engine 1
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          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

  Combustion stroke

Temperature2000 - 2500C
PressureUp to 75 bar (petrol engine)
Up to 180 bar (diesel engine)

The piston travels from TDC to BDC. The working pressure accelerates the piston.
TDC = Top Dead Center, BDC = Bottom Dead Center

The animated working process.


The combustion stroke should provide an early and rapidly increasing combustion pressure in the completely sealed combustion chamber, which is then transferred to the crankshaft through the pistons and the connecting rods.


It actually begins during the compression stroke, when the fuel is injected (Diesel engine) or when the electric spark ignites the air-fuel mixture (petrol engine). At idling speed, this occurs mostly just before TDC, and at higher revs, at around 30 (Diesel engine) or 60 before TDC (petrol engine). The greatest increase in pressure occurs, in all cases, after TDC. The performance obtained must be substantially higher than that rendered in the other three strokes. 09/11               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

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