Not really While I've never owned a full electric, I have owned/ substantially driven LPG, CNG, Full Hybrid and Petrol Diesel cars
There is no one answer for the generic questions asked here. CNG: Future fuel for India and the developing world the ONLY fuel produced domestically in India. This means: - No importing fuel/ paying the oil producing countries
- Drastically lower pollution levels, especially CO, Particulate and NOx emissions. CO2 emission reductions of around 15-20% vs. a Petrol engine.
- Cost savings of around 30% compared to an equivalent diesel and 65% less than an equivalent petrol engine
- Power loss of around 15-% on a well installed, well designed kit.
- Additional maintainance is a myth. CNG cars needs good airflow and good spark. So buy a K&N air filter and change spark plugs every 12,000 kms and you will never have problems. You will need to drive on Petrol once in a while for a few kms though to keep fuel system lubricated.
- Range of 100km (city)/ 150 km (highway) driving prior to refilling the tank
- Long lines etc. are baggage from 5 years ago. Today, it's as easy to fill CNG as it is Petrol/ Diesel
My Chevy Optra 1.6L has the Official General Motors CNG kits installed by GM engineers. This one mod has transformed the car from a guzzler to a very low cost city comfort car. Fuel efficiency was 8.5 kmpl to a liter of petrol at best. Now its 12 km/ kg of CNG. LPG: Not the best fuel option in any regard but better than Petrol in terms of cost savings. Less particulate emissions and NOx emissions than diesel but more CO and CO2 emissions. - Imported Fuel. Prices range from low during summer months to higher during winter months when the cold countries need it to heat their homes
- Drop in fuel efficiency of around 20%
- Lower cost than Petrol and Diesel offsets the lower fuel efficiency to some degree
- Slightly lower emissions vs. Petrol but not as clean as latest common rail diesels/ CNG/ Electric. Not a green fuel!
- Slight powerloss of around 10%
- Sequential injection kits are the best - go for the Mitsubishi Lancer and the new Chevy Spark as they are pretty good factory installed kits. I'd always recommend Factory installed LPG kits only.
- Range -150 kms (city)/ 230 kms (highway) for the typical LPG tank
ELECTRIC: Long term future fuel for the West and developed nations. By far the most City Friendly and environmentally friendly fuel available. - Extremely low maintainance as long as not exposed to extreme heat, cold or to water.
- Battery technology is shifting to Lithium based technologies. No more Lead Acid or Nickel Metal Hydride. This is still atleast a year from breaking into the mass market
- No pollution whatsoever if power is dereived from Hydro, Wind, Nuclear or Solar/ Solar Thermal sources.
- 40-60% less polluting even if power dereived from Coal
- Instant Torque avaible throughout the rev range = great performance
- No cars available other than Reva in India. New Reva holds promise
- Internationally, the Chevy Volt, Mitsubishi MiEV, Smart EV and Subaru R1e will lead the charge alongwith smaller offerings like the Reva. Hybrids like the Toyota Prius, Honda Insight, Ford Fusion Hybrid and Civic Hybrid will continue to expand their footing in the short to medium term.
- Range: 100 kms per charge on upcoming Li-on battery powered EVs
I won't comment on the latest Diesel and Petrol engines here. Innovations like Common Rail direct injection aka Multijet, Fiat's new Multi Air injection, Direct injection, friction reduction technologies etc. have drastically improved the Spark Combustion Engine (Petrol) and the Compression Ignition Engine (Diesel). But these are obsolete technologies that are attempting to extend their respective lifespans.
In my humble opinion, the future lies in harnessing the power of the sun, the wind, the flow of water and the atom. Not in digging up the earth and exploding it under our bonnets. That future will never come as long as we stick to convention.
Last edited by Screwdriva : 4th August 2009 at 17:38.
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