Fuel Economy Scams

Can you please explain the turbo blanket to me.
I have seen them and expect it has something to do with less heat convection away from the turbo and exhaust manifold.
This I think should give a bit more boost as the gasses are hotter and thus with expansion more volumetric.
Am I correct?

If so or even if I'm not correct does this blanket not carry the risk cooking the head and turbo more easily?

 

If i remember right its to keep the air in the turbine hot.....hot air flows faster.

 

Yes you are correct its there to keep the Turbo running harder faster giving a little better performance and response.

If your temps are high enough to ruin the Turbo then you have other issues. Yes the blanket does prevent heat from radiating off the housing, but its not soo much to the point you'll be breaking things any faster.

A lot of these things need a lot of miles to see the big gains. Every little thing helps but make sure you take into account the length of ROI.

 

You have to look at the entire picture though when comparing engines. N/A motors can be more efficient and enough times are. Turbo diesels are around due to power and size. Most trucks are 400hp+ now. An N/A motor would be massive to make that kind of power efficiently.

A lot of the N/A diesels used indirect injection too. The key thing though is the compression ratio. They all ran 20:1 and higher where today's Turbo motors all run under 18:1 generally.

The size is the issue. Look at the n/a motors of yesteryear, all big behemoths making less than half.the power.of their Turbocharged replacements. However the N/A motors were always more efficient. The old 6.2 GM diesel's were hard pressed to get under 20mpg tooling around whereas the newer duramax will have a hard time seeing 20mpgs again if ever. Same goes for ford.

The difference though? About 270hp and 520ft-lb torque more. The 6.2 had 130hp and 240ft-lb, the current LML Duramax has 397hp and 765ft-lbs. The might as well just round the numbers like ford and ram too soo every truck is 400/800 haha. There is a big price difference though. $1,500 for the 6.2 back in the day, $8,400 for a duramax/Allison now. 6.2 weighed about 700lbs the LML weighs 1,100-1,200lbs.

2 strokes are the.most efficient diesel's in the world now and also the largest.


The "turbo-compounding" you refer to is being used by a number of OEMs now. You wouldn't think it would do much but every little bit.helps.I guess.

I saw a steam generator idea Cummins had awhile back using steam off the EGR.

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I have not come across any OEM besides Scania using this kind of turbo compounding.
It works fairly well so it actually surprises me.

 

Fiat Powertrain uses it on some of their off road motors. Other OEM's are as well. Cummins is too.

 

If you are going to put oil into the fuel tank for lubricity , why not add used engine oil instead of two stroke oil ?? On a second note - never heard of adding trans fluid to clean engine before .

 

I have read the new bio diesel is the best lubricity for diesel engines.