Can someone give me a hand with this?
How much air is a 2100cc td engine drawing at 4500rpm.
I think I've worked it out but want to see if what other answers are put forward?
Cheers
Steve
Air Flow
Moderator: RichardW
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Air Flow
98 406 Estate LX 2.1td in white (Anyone call Ghostbusters?)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
hmm I am gonna go crazy and say the following.
Lets say one cylinder will be sucking in air, the other thee will be blowing exhaust, igniting or compressing.
So at any one time at least 420cc of air are being sucked in. That is if there wasn't any fuel. Without how much fuel being injected in each cylinder its difficult to say. Probably not much, lets say 20cc. (thats a complete guess and probably wont constitute a stoichiometric value!) But anyway, based on that:
So at any one time 400 cc of air is always being sucked in per revolution.
400 x 4500 rpm = 1800000 cc of air in a minute.
So about 1800 litres per minute.
That actually sounds plausible!
Lets say one cylinder will be sucking in air, the other thee will be blowing exhaust, igniting or compressing.
So at any one time at least 420cc of air are being sucked in. That is if there wasn't any fuel. Without how much fuel being injected in each cylinder its difficult to say. Probably not much, lets say 20cc. (thats a complete guess and probably wont constitute a stoichiometric value!) But anyway, based on that:
So at any one time 400 cc of air is always being sucked in per revolution.
400 x 4500 rpm = 1800000 cc of air in a minute.
So about 1800 litres per minute.
That actually sounds plausible!
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- Joined: 14 May 2002, 06:01
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Close to what i got.
2100cc divided by four (cylinders) = 525cc
525 X 4500rpm = 2362500cc.
2362.5 cubic meters per minute.
Trying to find an air pump which will put positive air pressure to the intake and trying to ensure I get something with enough guts to actually overcome the suction of the engine.
Any suggestions?
Steve
2100cc divided by four (cylinders) = 525cc
525 X 4500rpm = 2362500cc.
2362.5 cubic meters per minute.
Trying to find an air pump which will put positive air pressure to the intake and trying to ensure I get something with enough guts to actually overcome the suction of the engine.
Any suggestions?
Steve
98 406 Estate LX 2.1td in white (Anyone call Ghostbusters?)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
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- Posts: 112
- Joined: 14 May 2002, 06:01
- Location: United Kingdom
- My Cars:
Exactly the reason I wanted someone else to check my numbers!
Got myself a bilge blower from e-bay so next is to purchase a higher power motor for it to give it enough power to actually move pore air than the engine.
Thought 4500rpm was a good place to stop as the engine is getting a little stressed by that point anyway.
I also need to find a high enough powered feed for it under the bonnet that's switched through the ignition so it's only running when the engine is.
Any hints?
Cheers
Steve
Got myself a bilge blower from e-bay so next is to purchase a higher power motor for it to give it enough power to actually move pore air than the engine.
Thought 4500rpm was a good place to stop as the engine is getting a little stressed by that point anyway.
I also need to find a high enough powered feed for it under the bonnet that's switched through the ignition so it's only running when the engine is.
Any hints?
Cheers
Steve
98 406 Estate LX 2.1td in white (Anyone call Ghostbusters?)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
-
- Posts: 112
- Joined: 14 May 2002, 06:01
- Location: United Kingdom
- My Cars:
Exactly the reason I wanted someone else to check my numbers!
Got myself a bilge blower from e-bay so next is to purchase a higher power motor for it to give it enough power to actually move pore air than the engine.
Thought 4500rpm was a good place to stop as the engine is getting a little stressed by that point anyway.
I also need to find a high enough powered feed for it under the bonnet that's switched through the ignition so it's only running when the engine is.
Any hints?
Cheers
Steve
Got myself a bilge blower from e-bay so next is to purchase a higher power motor for it to give it enough power to actually move pore air than the engine.
Thought 4500rpm was a good place to stop as the engine is getting a little stressed by that point anyway.
I also need to find a high enough powered feed for it under the bonnet that's switched through the ignition so it's only running when the engine is.
Any hints?
Cheers
Steve
98 406 Estate LX 2.1td in white (Anyone call Ghostbusters?)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)
97 Xantia SX 2.1td (Chipped and happy at 130mph) Deceased after agricultural incident (crashed into field).
1981 Mini HL (Just happy to be around)