If ever auomobile engineering goona change its technology

AI Thread Summary
The discussion centers on the pressure of the piston during the suction stroke in automobile engines, highlighting that the vacuum value typically measures around 20 inches, which can lead to pumping losses. Increasing this pressure could theoretically provide benefits, but the vacuum is often harmful and can be mitigated with external devices like pumps. In turbocharged or supercharged engines, a constant manifold pressure eliminates vacuum issues, while diesel engines do not experience vacuum at all. The conversation also questions what specific technology should change and the reasons behind it. Overall, understanding and managing piston pressure and vacuum is crucial for improving engine efficiency.
prashan
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whats the pressure of piston in suction stroke...and if we increase it could we get more benifit
 
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prashan said:
whats the pressure of piston in suction stroke...and if we increase it could we get more benifit
If you mean the vacuum value, then this should be around 20 inches and it's harmful actually and is referred to as pumping losses
nevertheless, there are some auxiliary components that utilize some of this vacuum, but this vacuum could be generated with an external device (e.g pump) therefor eliminating the harmful effects.

the vacuum inside the engine results from the restricted air flow by the butterfly that is partially closed
In a turbocharged/ supercharged engine there will be a constant pressure through the manifold which eliminates the vacuum from it altogether, also note that diesel engines don't experience vacuum at all

However, what "technology" excatly do you refer to and why should it be changed ?
 
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