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Reg.Exhaust stroke 2
- Thread starter sudhakarn
- Start date
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2
- #3
Compositepro
Chemical
The inertia of the engine components keeps things moving, particularly the flywheel.
There is no vacuum on the exhaust stroke. The piston has to do work to push the exhaust out.
The other responders are correct about where the energy for that work has to come from.
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
The other responders are correct about where the energy for that work has to come from.
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
Exhaust manifold design as well as the entire exhaust system design certainly have an effect on getting some of the exhaust gases out via the pressure waves that bounce back in forth in the exhaust system. The majority of the gases though are simply pushed out the cylinder by the rising piston.
- Thread starter
- #8
The work put into the system by the explosion provides momentum. The inertia associated with this movement keeps it going and brings it back to TDC for the second explosion. A flywheel is a big chunk of rotational mass designed to help this. Additionally the other cylinders in a multi piston engine are firing at different times, so more work is being put into the system and the crankshaft keeps revolving.
- Thread starter
- #10
Hi Rvamache,
You hit the bull's eye.The flywheel you have mentioned is the one which gives me a greater understanding of this concept.Thanks a ton to everyone.
P.S.: I am not getting notifications on my inbox on my threads although i didnt turn it off.Any suggestions would be highly appreciated.
You hit the bull's eye.The flywheel you have mentioned is the one which gives me a greater understanding of this concept.Thanks a ton to everyone.
P.S.: I am not getting notifications on my inbox on my threads although i didnt turn it off.Any suggestions would be highly appreciated.
There are old single cylinder engines that regulate their speed by firing only when the speed drops (hit and miss engines). The flywheel inertia can keep the engine turning for several revolutions between combustion events.
Watch a few youtoob examples and perhaps you will become more comfortable with the idea of flywheel inertia sustaining crankshaft rotation:
Watch a few youtoob examples and perhaps you will become more comfortable with the idea of flywheel inertia sustaining crankshaft rotation:
- Thread starter
- #12
- Moderator
- #13
An old friend of mine worked in a bush mill over 50 years ago. The head saw was driven by an enormous single cylinder "hit and miss" engine. The flywheel was about 7 feet or 2 meters in diameter.
Friend said that the crew would turn off the fuel when they went for their 1/2 hour lunch break. When they returned 30 minutes later, the engine would be still turning.
They would turn the fuel back on and go back to work.
They don't make them like that anymore!
Bill
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"Why not the best?"
Jimmy Carter
Friend said that the crew would turn off the fuel when they went for their 1/2 hour lunch break. When they returned 30 minutes later, the engine would be still turning.
They would turn the fuel back on and go back to work.
They don't make them like that anymore!
Bill
--------------------
"Why not the best?"
Jimmy Carter
- Status
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