The Off Topic Thread.

[Puffwagon]

Ay so I was just reading some stuff about atkinson cycle engine operation and I wondered if we could implement this on our cars?

 

We have access to cam tuning and obviously we can have custom cams made.

 

I haven't done any maths at this point so I can't confirm if it would work and there are a multitude of reasons why it may not work.

 

Surely I'm not the only person to consider this, has anyone put some time and thought into seeing if it could work?

[Rab]

Don't they use different stroke length for intake/compression and exhaust/power?

 

edit: nvm - googled it

Edited 13/09/16 05:28 AM by Rab

[Puffwagon]

Lol for anyone else, not you Rab, who doesn't want to google it, the basic principle is keeping the intake valve open for a period of time during the compression cycle to reduce the compression therefore reducing load on the engine making it more efficient.

 

It's quite easy to turn a engine by hand with the plugs out but difficult or impossible in some cases with the plugs in.

 

Easier to turn means less fuel needed to overcome the cylinder pressure.

 

Potato version: Use less fuel when cruising.

[MattyP]

Morning all

 

new tail shaft coupling arrived today, along with paint. Can't wait for the next few days off and get my g6 sorted.

 

then I might be able to tackle the celica 

[skidxr6t]

22 hours ago, Puffwagon said:

Lol for anyone else, not you Rab, who doesn't want to google it, the basic principle is keeping the intake valve open for a period of time during the compression cycle to reduce the compression therefore reducing load on the engine making it more efficient.

 

I think that would be detrimental to a turbocharged engine though? only good for a motor that runs a high compression ratio?

 

have you heard of this technology? I think this is what we want

 

[MattyP]

It's still not addressing the fatal flaw though with most ICE engines

 

petrol,

 

its grot, it likes to knock, it's not renewable 

 

e85 14 to 1 comp and boost = win

[Puffwagon]

11 minutes ago, johnxr6t said:

 

I think that would be detrimental to a turbocharged engine though? only good for a motor that runs a high compression ratio?

 

have you heard of this technology? I think this is what we want

 

 

Most motors aren't "charged" when they are cruising so I don't think it would matter.

 

Obviously some form of intake cam timing is necessary to make it happen later. Maybe the cam timing is already set like that? I have no idea but I'll have a look eventually.

[Puffwagon]

I see you've upgraded your car a bit MattyP. Gotta give you some smiles ay?

[El Andrew]

Clinton:



Scotty Kilmer:

[hawlass]

Still don't understand why the yanks choose pensioners for presidents?

Experience , sure, but they're closer to alzheimer's than anything truly useful.