e46 330i vs e46 330d

[netercol]

Regardless if we run out of crude oil, we will still be able to use current petrol and diesel engines. With modification, diesels can run on chip oil (made from sun flowers) and petrol cars can run on biofuel such as ethanol...

very true that , petrol cars can be adapted to run on ethanol.. however there is no getting around the fact that compression ignition engines (known as diesels to us ) is just more efficient , thus needing the production of less biofuel.

thus my prediction, and im sticking to it

 

[Sankekur]

Regardless if we run out of crude oil, we will still be able to use current petrol and diesel engines. With modification, diesels can run on chip oil (made from sun flowers) and petrol cars can run on biofuel such as ethanol...

very true that , petrol cars can be adapted to run on ethanol.. however there is no getting around the fact that compression ignition engines (known as diesels to us ) is just more efficient , thus needing the production of less biofuel.

thus my prediction, and im sticking to it

If I am not mistaken diesel engines are only more efficient that petrol engines due to the higher potential chemical energy stored per volume of diesel and not due to the enigine itself.
But I am not really thinking about biofuel, I was thinking more in the lines of hydrogen combustion power. If I remember correctly BMW made a e39 prototype that ran on hydrogen combustion with and adapted petrol engine. Good things about hydrogen is that its combustion only produces water and its the most and its abundant element in the universe.

 

[applehero]

If I am not mistaken diesel engines are only more efficient that petrol engines due to the higher potential chemical energy stored per volume of diesel and not due to the enigine itself.
But I am not really thinking about biofuel, I was thinking more in the lines of hydrogen combustion power. If I remember correctly BMW made a e39 prototype that ran on hydrogen combustion with and adapted petrol engine. Good things about hydrogen is that its combustion only produces water and its the most and its abundant element in the universe.

I read an article on the 7 series using hydrogen. Seems quite an expensive modification... Hydrogen may be really abundant, but it's difficult to extract... But if you wanna do it, go for it. :thumbsup: Anything's possible!

 

[Sankekur]

If I am not mistaken diesel engines are only more efficient that petrol engines due to the higher potential chemical energy stored per volume of diesel and not due to the enigine itself.
But I am not really thinking about biofuel, I was thinking more in the lines of hydrogen combustion power. If I remember correctly BMW made a e39 prototype that ran on hydrogen combustion with and adapted petrol engine. Good things about hydrogen is that its combustion only produces water and its the most and its abundant element in the universe.

I read an article on the 7 series using hydrogen. Seems quite an expensive modification... Hydrogen may be really abundant, but it's difficult to extract... But if you wanna do it, go for it. :thumbsup: Anything's possible!

That it is, but refining petrol and diesel from crude is also not that easy, but if there is a drive hydrogen technology could work, also if it is being used and there is a market it would lead to reseach and better processes for the isolation etc. but I guess we will have to see

 

[netercol]

If I am not mistaken diesel engines are only more efficient that petrol engines due to the higher potential chemical energy stored per volume of diesel and not due to the enigine itself.

yeah that too, but not only that... they have higher thermal efficiency due to higher compression ratio's, because they dont have to worry about about detonation..

problem with hydrogen last time i read about it, is that while a tank of hydrogen produces no carbon , the energy it takes to produce a tank of hydrogen produces about 10x as much carbon, or something silly like that..

anyways, sorry for derailing this thread