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BMW Hydrogen 7 !

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To promote hydrogen for future luxury car makers like BMW are leasing Hydrogen 7 series Sedan on loan not to make profit but to promote it for future .

It is said that hydrogen fuel will come 2 decades but car manufactures want to change that to a Decade.

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as far as hydrogen-powered cars are concerned, i really like honda's approach with the "energy station" concept, where u can use regular piped gas to fill youyr car, and the hydrogen is then extracted from this. the energy station also provides a power back-up for your household, and is a proper move aimed at sustainable technology which doesn't require a massive infrastructure development to be viable. of course, it also makes honda more money, but i like the end-to-end

solution. shows a well thought through approach

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Saw these ages ago in World Hydrogen Energy Conferences in Pasadena (1982) and Vienna (1984). The fact that they are still 'concepts' or similar after 25 years says it all. I suspect that Hydrogen Vehicles (if and when they come!) will more likely be Fuel Cell based and not IC engine based.

Incidentally, if anyone can come up with a successful Methanol based Fuel Cell then he/she has a fortune waiting. This will make Bill Gates & Co look like paupers!  

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Even Honda's on the move in this regard. In fact' date=' this will be the first hydrogen-powered car. ladies and gentlemen, presenting: The Honda FCX Clarity.

[/quote']

http://www.autocarindia.com/new/autocar_forum/forum_posts.asp?TID=732

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Even Honda's on the move in this regard. In fact' date=' this will be the first hydrogen-powered car. ladies and gentlemen, presenting: The Honda FCX Clarity.

[/quote']

http://www.autocarindia.com/new/autocar_forum/forum_posts.asp?TID=732

Look at the time of both the posts.

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One major point to note.

Hydrogen is just a carrier and not a power source as such. In other words hydrogen has to be generated. It is then put into a carrier - could be compressed gas, liquefied gas, chemical storage (hydride) and then used to power the vehicles. It does not occur naturally in significant quantities.

Common ways of generating hydrogen are electrolysis (not very attractive in India since we have chronic power shortages),  coal or petroleum reforming. In either case the belief that it is a Green Fuel is doubtful, since to generate hydrogen you will be emitting greenhouse gases. The only GREEN options would be from Nuclear power or alcohol.

Also, research at BMW and Argonne shows that the most efficient combustion is through direct injection. Indirect injection of Gaseous hydrogen in far less efficient than the gasoline engine, while Liquid Hydrogen is close to the gasoline engine. Hydrogen forms a vary large part of the gas in the cylinder, leading to a lower power output. Liquid hydrogen (stored at 20K, i.e., -253C) cools the charge making it denser. Only Direct Injection is more efficient than the gasoline engine.

This does not take into account the efficiency of the hydrogen production process.

This is just to show that in the Indian context the Hydrogen economy is even more distant than in the global context, where nuclear power can probably make it more acceptable, esp. when Greenhouse gas emissions are taken into account.

sgiitk2008-01-12 17:46:53

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BMW will launch this Hydrogen 7 series definately by 2010 as said by sources in Germany as they will install Hydrogen fuel pumps on various highways and AutoBahn.

 

Good for the BMW , but 2010 seems a long time

 

Regards,

priya

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One must take all announcements with a very healthy degree of scepticism. A lot of them for political/market reasons. In Europe with excess of non-polluting power (hydro in Scandinavia, Nuclear in France) things are different.

 BMW have been working on Hydrogen Fuel since the late 1970's. I have seen their hydrogen fuelled vehicles as early as 1982. They are using the Cryo (liquid Hydrogen) route. Ford are also active, but are using the gaseous route. One other issue is on board storage. The energy density of fossil fuels is impossible to match. Even the most optimistic approach is to try and put 300km worth of fuel on-board the vehicle.

One point is in favour of hydrogen is safety. It is much safer than Petrol (Yes it is). Another negative point can be very rapid combustion, i.e. knocking.

Even here now they are trying out things like regenarative braking and the like to help extend the range. What stops the same technology from making its appearance in normal auto's! 

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Incidentally' date=' if anyone can come up with a successful Methanol based Fuel Cell then he/she has a fortune waiting. This will make Bill Gates & Co look like paupers!  

[/quote']

These are now a reality, probably much earlier than expected. See the article posted in Hybrid Cars!

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