Jump to content
SAU Community

Recommended Posts

i wonder how far off we are from a mass produced toyota nissan holden version of this, or if that will ever happen

i really dont know why we cant run our cars on methanol apart from the government finding it hard to stop ppls making vodka baths in the basement to run the kids to school in the daewoo oh and the not tgacing it thing

BMW Hydrogen 7 launched

Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/
Share on other sites

i wonder how far off we are from a mass produced toyota nissan holden version of this, or if that will ever happen

i really dont know why we cant run our cars on methanol apart from the government finding it hard to stop ppls making vodka baths in the basement to run the kids to school in the daewoo oh and the not tgacing it thing

BMW Hydrogen 7 launched

The technology is fantasic, the production of hydrogen though is very expensive until that problem is solved they are not worth it.

If you havent seen the movie who killed the electric car go see it or i could lend it to ya. Yes it is biased towards electrics but has some info on the hydrogen cars and stuff coming into play in the US.

Also have a look at http://www.teslamotors.com/

They have the backing to do it so it shall be interesting over the next year or two.

Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2672547
Share on other sites

Dosen't it still take more energy and produce more emissions making hydrogen just using petrol?

"hydrogen - the most common element in the universe" yeah, most common but 99.99999999999% of it is contained in stars and gas clouds in space - not that easy to get to. Hydrogen in its elemental form on earth is in very very small proportions, 99.9999% makes up part of the water in our oceans.

Edited by JCMarshall_Law
Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2672728
Share on other sites

that telsa look good ... but thats the problem with electric no engine sound @ least with hydrogen engine would still make a noise but dont know if you can modify the exhaust

Id make my own noises...the other 1/2 already says i do :D

Id like to try one of them tesla cars out...

Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2673507
Share on other sites

This is why oil companies and the US government never backed the electric car, but have embraced the hydrogen fuel cell:

They can provide an "environmentally friendly alternative" but still warrant charging and taxing an arm and a leg for fuel.

The fundamental difference between hydrogen powered & electric cars comes into play when you want to refuel. In an electric car the process takes hours, in a hydrogen fuelled car it can be done in a matter of minutes. Which makes it possible to use a hydgrogen powered car in the same manner as a petrol powered car. Something that (conspiracy theorists aside) proponents of electric cars can never claim.

Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2673549
Share on other sites

The fundamental difference between hydrogen powered & electric cars comes into play when you want to refuel. In an electric car the process takes hours, in a hydrogen fuelled car it can be done in a matter of minutes. Which makes it possible to use a hydgrogen powered car in the same manner as a petrol powered car. Something that (conspiracy theorists aside) proponents of electric cars can never claim.

Yes they cant claim this, but the distances and charging times would suit a large percentage of the population eg the people that drive to work and back each day. Telsa is 3.5 hours for fullcharge which is about 400kms.

Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2675041
Share on other sites

Yes the Tesla car looks like it could be a lot of fun, however there is one fundamental problem I have with it that people always seem to forget.....

Yeah for sure the car itself doesn't put out any emissions, but what about it's power source?? Unless you are using a solar or wind generator you are going to be burning fossil fuels every time you have to charge the sucker up. The idea itself is a good one but without green power production it's effectively usless IMO.

Plus who has another car that they use if they all of a sudden have to travel more than 400km the next day that they can otherwise afford to have lying around doing nothing?

This is where the Hydrogen system becomes interesting, as when they can sought out the tank storage system (which no doubt with more reseach they will) & reduce the cost of producing the hydrogen (which with increasing production levels & more efficient systems will happen) it then becomes highly viable.

BMW's spent truckloads of money researching this system almost completely all by themselves & I can't see them doing it all for nothing.

Edited by JazzaR33
Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2683455
Share on other sites

Yes the Tesla car looks like it could be a lot of fun, however there is one fundamental problem I have with it that people always seem to forget.....

Yeah for sure the car itself doesn't put out any emissions, but what about it's power source?? Unless you are using a solar or wind generator you are going to be burning fossil fuels every time you have to charge the sucker up. The idea itself is a good one but without green power production it's effectively usless IMO.

Plus who has another car that they use if they all of a sudden have to travel more than 400km the next day that they can otherwise afford to have lying around doing nothing?

Yes you have to produce the electricity, but its cheaper/more efficent(lesser amounts of nasties) to produce the power needed in a power station then it is to burn petrol in a car.

Also as i said above currently and until a major breakthough happens its more expensive(eg the electricity needed to make hydroden makes more byproducts) then either of the above.

To the more then 400kms car lying around. Thats what hire cars are for :blink: among other things. :wave:

Link to comment
https://www.sau.com.au/forums/topic/143304-bmw/#findComment-2687236
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • @Haggerty this is your red flag. In MAP based ECU's the Manifold pressure X RPM calculation is how the engine knows it is actually...running/going through ANY load. You are confusing the term 'base map' with your base VE/Fuel table. When most people say 'base map' they mean the stock entire tune shipped with the ECU, hopefully aimed at a specific car/setup to use as a base for beginning to tune your specific car. Haltech has a lot of documentation (or at least they used to, I expect it to be better now). Read it voraciously.
    • I saw you mention this earlier and it raised a red flag, but I couldn't believe it was real. Yes, the vacuum signal should vary. It is the one and only load signal from the engine to the ECU, and it MUST vary. It is either not connected or is badly f**ked up in some way.
    • @Haggerty you still haven't answered my question.  Many things you are saying do not make sense for someone who can tune, yet I would not expect someone who cannot tune to be playing with the things in the ECU that you are.  This process would be a lot quicker to figure out if we can remove user error from the equation. 
    • If as it's stalling, the fuel pressure rises, it's saying there's less vacuum in the intake manifold. This is pretty typical of an engine that is slowing down.   While typically is agree it sounds fuel related, it really sounds fuel/air mixture related. Since the whole system has been refurbished, including injectors, pump, etc, it's likely we've altered how well the system is delivering fuel. If someone before you has messed with the IACV because it needed fiddling with as the fuel system was dieing out, we need to readjust it back. Getting things back to factory spec everywhere, is what's going to help the entire system. So if it idles at 400rpm with no IACV, that needs raising. Getting factory air flow back to normal will help us get everything back in spec, and likely help chase down any other issues. Back on IACV, if the base idle (no IACV plugged in) is too far out, it's a lot harder for the ECU to control idle. The IACV duty cycle causes non linear variations in reality. When I've tuned the idle valves in the past, you need to keep it in a relatively narrow window on aftermarket ecus to stop them doing wild dances. It also means if your base idle is too low, the valve needs to open too much, and then the smallest % change ends up being a huge variation.
    • I guess one thing that might be wrong is the manifold pressure.  It is a constant -5.9 and never moves even under 100% throttle and load.  I would expect it to atleast go to 0 correct?  It's doing this with the OEM MAP as well as the ECU vacuum sensor. When trying to tune the base map under load the crosshairs only climb vertically with RPM, but always in the -5.9 column.
×
×
  • Create New...