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Valve overlap occurs in a four-stroke engine at the end of the Exhaust stroke and at the beginning of the Induction stroke; and is when both the exhaust and inlet valves are open at the same time.
At the end of the Exhaust stroke, the Exhaust valve is closing and the Inlet valve is starting to open in preparation for the induction of fuel and air into the cylinder.
It is common knowledge that in vehicles that cannot alter the valve timing, the Inlet valve opens approx 6 degrees before top-dead-centre and the Exhaust valve closes at 9 degrees after top-dead-centre
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BlakeValve overlap is the period of time during an engine's operation when both the intake and exhaust valves are open at the same time. This allows for the possibility of overlap in their opening and closing events, helping to optimize engine performance by improving cylinder filling and scavenging of exhaust gases.
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What is overlap repulsion in physics?
Overlap repulsion in physics refers to the phenomenon where two objects or particles cannot occupy the same space at the same time due to the repulsive forces between them. This leads to an increase in the potential energy of the system as the objects or particles are pushed apart to prevent overlap. Overlap repulsion plays a significant role in various physical systems such as atomic and molecular interactions.
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