Dwell
Valve overlap.
There is a short time between the exhaust and intake stroke where all the valves are slightly open at the same time. This period of time is called valve overlap. This is because the intake valves are just starting to open as the exhaust valves are just finishing closing. This is done so flow through the engine can be maintained at engine operating speeds.
The length of time a is called that an orginism is experctd to live is ab stimulus
The length of time an organism is expected to live is their lifespan.
If the valve timing is correct and there are no damaged engine parts (or weak/faulty valve springs) that should not happen, yet however if the engine is "over-revved" the valves could "float" which is not normal operation. (If the engine is an interference engine there may possibly be engine damage.) That is normal and it is called valve overlap.
The term for the time when both the intake and exhaust valves are open simultaneously is called "valve overlap." This occurs during the end of the exhaust stroke and the beginning of the intake stroke in a four-stroke engine cycle. Valve overlap can enhance engine efficiency by allowing better exhaust scavenging and improved intake charge filling.
The length of time an organism is expected to live is their lifespan.
nanosecond.
The length of time an organism is expected to live is their lifespan.
The length of time it takes a pesticide to pass through a material to reach the skin is called the "penetration time."
Exhaust valves open at the appropriate time to allow the burnt gasses to escape.
Exhaust valves open at the appropriate time to allow the burnt gasses to escape.