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| madrascoffee.com | Steam powered vehicles | Internal combustion engine | Innovation | Alternative fuel cars | Current Production | Future of the car | Infrastructure and Alternatives |
Alternative fuel cars
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With heavy taxes on fuel, particularly in Europe and tightening
environmental laws, particularly in California, and the possibility
of further restrictions on greenhouse gas emissions, work on
alternative power systems for vehicles continues. Diesel-powered cars can run with little or no modification on 100% pure bio-diesel, a fuel that can be made from vegetable oils but require modifications if you drive in cold weather countries, the main plus of Diesel combustion engines is it's 50% fuel burn advantage over 23% in the best gasoline engines. This makes Diesel engines capable of achieving an average of 17 kilometers per liter fuel efficiency. Many cars that currently use gasoline can run on ethanol, a fuel made from plant sugars. Most cars that are designed to run on gasoline are capable of running with up to 15% ethanol mixed in. With a small amount of redesign, gasoline-powered vehicles can run on ethanol concentrations as high as 85%. |
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All petrol fuelled cars can run on LPG. There has been some concern
that the ethanol-gasoline mixtures prematurely wear down seals and
gaskets. Theoretically, the lower energy content of alcohol should
lead to considerably reduced efficiency and range when compared with
gasoline. However, EPA testing has actually shown only a 20-30%
reduction in range. Therefore, if your vehicle is capable of doing
750 kilometers on a 50 liter tank (15 kilometers per liter), its
range would be reduced to approximately 600 kilometers (12
kilometers per liter). Of course, certain measures are available to
increase this efficiency, such as different camshaft configurations,
altering the timing/spark output of the ignition, increasing
compression, or simply using a larger fuel tank. In the United States, alcohol fuel was produced in corn-alcohol stills until Prohibition criminalized the production of alcohol in 1919. Brazil is the only country which produces pure ethanol powered cars, called Flex, since the late 1970s. Attempts at building viable battery-powered electric vehicles continued throughout the 1990s (notably General Motors with the EV1), but cost, speed and inadequate driving range made them uneconomical. Battery powered cars have primarily used lead-acid batteries and NiMH batteries. Lead-acid batteries' recharge capacity is considerably reduced if they're discharged beyond 75% on a regular basis, making them a less-than-ideal solution. NiMH batteries are a better choice, but are considerably more expensive than lead-acid. Current research and development is centered on "hybrid" vehicles that use both electric power and internal combustion. The first hybrid vehicle available for sale in the USA was the Honda Insight. As of 2005, The car is still in production and achieves around 25.5 kilometers per liter. Other R&D efforts in alternative forms of power focus on developing fuel cells, alternative forms of combustion such as GDI and HCCI, and even the stored energy of compressed air (see water Engine). Accidents seem as old as automobile vehicles themselves. Joseph Cugnot crashed his steam-powered "Fardier" against a wall in 1771. The first recorded automobile fatality was Bridget Driscoll on 1896-08-17 in London and the first in the United States was Henry Bliss on 1899-09-13 in New York City, NY. Cars have two basic safety problems: They have human drivers who make mistakes, and the wheels lose traction near a half gravity of deceleration. Automated control has been seriously proposed and successfully prototyped. Shoulder-belted passengers could tolerate a 32G emergency stop (reducing the safe intervehicle gap 64-fold) if high-speed roads incorporated a steel rail for emergency braking. Both safety modifications of the roadway are thought to be too expensive by most funding authorities, although these modifications could dramatically increase the number of vehicles that could safely use a high-speed highway. Early safety research focused on increasing the reliability of brakes and reducing the flammability of fuel systems. For example, modern engine compartments are open at the bottom so that fuel vapors, which are heavier than air, vent to the open air. Brakes are hydraulic so that failures are slow leaks, rather than abrupt cable breaks. Systematic research on crash safety started in 1958 at Ford Motor Company. Since then, most research has focused on absorbing external crash energy with crushable panels and reducing the motion of human bodies in the passenger compartment. There are standard tests for safety in new automobiles, like the EuroNCAP and the US NCAP tests. There are also tests run by organizations such as IIHS and backed by the insurance industry. Despite technological advances, there is still significant loss of life from car accidents: About 40,000 people die every year in the U.S., with similar figures in Europe. This figure increases annually in step with rising population and increasing travel if no measures are taken, but the rate per capita and per mile travelled decreases steadily. The death toll is expected to nearly double worldwide by 2020. A much higher number of accidents result in injury or permanent disability. The highest accident figures are reported in China and India. The European Union has a rigid program to cut the death toll in the EU in half by 2010 and member states have started implementing measures. |
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| madrascoffee.com | Steam powered vehicles | Internal combustion engine | Innovation | Alternative fuel cars | Current Production | Future of the car | Infrastructure and Alternatives |