Hydrogen Vehicles

Hi,
Here I am going to tell you about Vehicles that are running on Hydrogen fule in short Hydrogen 
Vehicles.
Hydrogen Vehicles includes Space Rockets,Automobile and Transport vehicles.Such Vehicle converts the 
chemical energy into Mechanical work by burning hydrogen in Internal Combustion engine or in a fuel 
cell.Hydrogen used in these vehicles is get from Methen ,Fossile fule and using Electrolisys of water.
Main benifit of these vehicles is that the emission is very less.

Lets compare the Hydogen-vehicle with other fuel vehicle......

Natural gas vehicles:

ICE-based CNG or LNG vehicles (Natural gas vehicles or NGVs) use Natural gas or Biogas as a fuel 
source. Natural gas has a higher energy density than hydrogen gas. Natural gas powered vehicles have a 
lower carbon dioxide footprint than ICE vehicles. Main benefit of these vehicles is that the fuel 
filling stations are available for that which is not yet setup for Hydrogen-Vehicles. Worldwide, there 
were 14.8 million natural gas vehicles by the end of 2011.

Battery electric vehicles:

A 2008 Technology Review article stated,Electric cars and plug-in hybrid cars have an enormous 
advantage over hydrogen fuel-cell vehicles in utilizing low-carbon electricity.That is because of the 
inherent inefficiency of the entire hydrogen fueling process, from generating the hydrogen with that 
electricity to transporting this diffuse gas long distances, getting the hydrogen in the car, and then 
running it through a fuel cell—all for the purpose of converting the hydrogen back into electricity to 
drive the same exact electric motor you'll find in an electric car.Thermodynamically, each additional 
step in the conversion process decreases the overall efficiency of the process.

Modification done on ICE to make it HEV.........

Internal combustion vehicle:

Hydrogen internal combustion engine cars are different from hydrogen fuel cell cars.The hydrogen 
internal combustion car is a slightly modified version of the traditional gasoline internal combustion 
engine car.These hydrogen engines burn fuel in the same manner that gasoline engines do.
Francois Isaac de Rivaz designed in 1807 the first hydrogen-fueled internal combustion engine.Paul 
Dieges patented in 1970 a modification to internal combustion engines which allowed a gasoline-powered 
engine to run on hydrogen.
Mazda has developed Wankel engines burning hydrogen. The advantage of using ICE (internal combustion 
engine) like Wankel and piston engines is the cost of retooling for production is much lower. 
Existing-technology ICE can still be applied for solving those problems where fuel cells are not a 
viable solution insofar, for example in cold-weather applications.

Drawbacks

As every coin is have to side  every thing has both advantages and disadvantages .Besides having more pollution free use the HEV is have high fuel cost due to problem of production ,transfer and storage of hydrogen gas.

Main drawback is problem regarding to the storage of hydrogen gas.

List of hydrogen internal combustion engine vehicles

A hydrogen internal combustion engine vehicle (HICEV) is a vehicle powered by a hydrogen-fueled internal combustion engine. Some versions are hydrogen/gasoline hybrids.

Francois Isaac de Rivaz
1807 – The De Rivaz engine, the first internal combustion engine using hydrogen as a fuel
Étienne Lenoir
1863 – Hippomobile
BMW:
2002 – BMW 750hl
2007 – Hydrogen 7 is powered by a dual-fuel Internal Combustion Engine-Liquid Hydrogen.
2007 – BMW H2R speed record car – ICE-Liquid Hydrogen
Ford:
2006 – F-250 Super Chief a Tri-Flex engine concept pickup.
Mazda:
1991 – Mazda HR-X Hydrogen Wankel Rotary.
1993 – Mazda HR-X2 Hydrogen Wankel Rotary.
1993 – Mazda MX-5 Miata Hydrogen Wankel Rotary.
1995 – Mazda Capella Cargo, first public street test of the hydrogen Wankel Rotary engine.
2003 – Mazda RX-8 Hydrogen RE Hydrogen \ Gasoline hybrid Wankel Rotary.
2007 – Premacy Hydrogen RE Hybrid
Revolve:
2010 - Transit H2ICE
Ronn Motor:
2008 – Scorpion

How to Increase fuel efficiency

Hi friends.........
You aware and affected by high price rise in automobile fuel .
So today I am going to tell you that how to increase fuel efficiency of your Car or Bikes.
For doing so You have to follow the steps that mention below.

Don't idle : Idling a 1,200 cc engine consumes about one litre of petrol an hour. So, if you need to stop for       more than a minute, shut off the engine. However, don't opt for this if the stoppage time is lesser since it requires more fuel to restart the engine.  Switching your engine off for short periods of time can actually increase fuel consumption, as it requires more fuel to get the engine started. Also your catalytic converter will no longer be running at full temperature and so your car will be less efficient, increasing the amount of pollution you cause.However if you are stopped for more than a few minutes then your car will simply burn less fuel with the engine stopped.

Check the oil : Only use the recommended viscosity of engine oil as oil that is more viscous can increase fuel consumption by 2%. Also, premium fuels don't enhance the performance or mileage of the car, so stay away from these.Change the lube oil at intervals specified by the owners manual. Use the recommended oil only especially in newer cars. Use of an engine flush before changing the oil will help to get rid of a lot of the dirt that collects in the engine that a normal oil change will not remove. On older engines it is advisable to use an oil treatment agent. This basically thickens the oil   which creates a better seal between the piston and the liner, preventing blow past and consequent loss of combustion pressure, resulting in higher  fuel efficiency.

Tyre effect fuel efficiency : It is estimated that about 50% of tyres on the road are under inflated.Aside from increasing the rate of wear, this wastes fuel and decreased your fuel efficiency. Check your tyre pressures every fortnight. Worn tyres will also decrease fuel efficiency (and your safety!), so check the tread regularly. If you are replacing tyres then consider some of the newer 'Eco' tyres that are designed specifically to increase fuel efficiency.Keep your tyres properly inflated since one psi drop in pressure in all four tyres can increase fuel consumption by 0.3%.

Clean the air filter regularly : Clogged air filters reduce fuel efficiency by 3-5%, while spark plugs in a poor condition reduce the mileage by up to 3%.One of the most common reasons for a drop in fuel efficiency is a dirty intake filter. This will decrease the amount of air entering the cylinders of the engine resulting in incomplete combustion. Check the filter regularly to ensure that it is clean.

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