why we open inlet valve before TDC and why Spark Plug at given Particular Angle?

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Accepted Answer

The inlet valve is opened before TDC to allow fresh air-fuel mixture into the combustion chamber. The spark plug is positioned at a specific angle for efficient combustion.

Opening the inlet valve before TDC ensures that the piston is moving downwards, creating a pressure difference that helps in drawing the air-fuel mixture into the combustion chamber.
This timing also allows for better mixing of the air and fuel, leading to improved combustion efficiency.
The spark plug is positioned at a particular angle to ensure optimal ignition of the air-fuel mixture.
The angle is determined based on factors like the shape of the combustion chamber, spark plug design, and desired flame propagation.
By positioning the spark plug correctly, it ensures that the flame front spreads evenly and efficiently throughout the combustion chamber.
This leads to better fuel combustion, reduced emissions, and improved engine performance.

why we open inlet valve before TDC and why Spark Plug at given Particular Angle?

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