Hybrid vehicles were the stuff of dreams centuries ago. Nobody ever thought that creating a vehicle independent from fuel was possible. Fortunately with the continuing development of hybrid technology, more efficient and practical vehicles have been created. In the recent years the campaign for global warming has brought the attention of the public. Hybrid cars are now becoming steadily popular available in various types from compact sedans to SUVs.
hybrid vehicles
Environmental issues are not the only reason that has made the public favor hybrid cars. Rising gas prices is also one of the major reasons why people prefer hybrid cars than conventional ones. Its also practical in suburban environments where you don’t really need horsepower but gas mileage.
Hybrid vehicles
There are different types of hybrid vehicles. They can vary from the simplest wheelbarrows to ships. No matter what form they are, these vehicles help in reducing greenhouse and noise emissions. Although these vehicles are expensive due to their unique structures, developments will continue to provide more alternatives to the public. These cars may not compare to conventional ones with a 200 horsepower but why would you need that if you only need 20 in the streets?
The simplest hybrid would be the single wheeled vehicles. These are wheelbarrows famously depicted with sails. This can be seen in Chinese sailing carriages.
The next is two wheeled vehicles. These are usually cycle type vehicles. The best example would be the Moped and electric bicycles. They are powered by an electric motor or an internal combustion engine in combination with the rider’s muscles. This concept was also used in the 1800′s by motorcycles. The electric bicycle can either be a parallel or a series hybrid.
Hybrid vehicles are not just limited to private cars. There are also hybrid power trains used by heavy vehicles. There are diesel or turbo electric buses, railway locomotives, heavy duty vehicles, hydraulic machinery and ships.
In ships a diesel engine drives the electric generator or hydraulic pump which in turn powers one or more hydraulic or electric motors. Sails and engines were early forms of hybrids which may be used again due to rising fuel costs.
More developments are continually being made in hybrid structures and systems for efficiency. Today buying a hybrid car is expensive but it will be beneficial in the long run. It does not just save fuel costs but also removes pollution that can harm the health of the people and take whatever it is left of the environment.
By: Johan Young
Hybrid cars are planning to use electric propulsion systems which prove to be very efficient and also environmentally friendly. There may be various methods and approaches to complete the movement that uses electrical energy, but the main idea is unchanged.
These systems are already working and will further help develop alternatives to the internal combustion engine.
hybrid electric car
What is Electric Propulsion?
Electric propulsion is the acceleration of gases in order to produce propulsive thrust through electric and magnetic body forces, electric body forces or electric heating. Electric propulsion system theory is normally considered to be part of rocket science where the propulsion system manages to generate enough energy to produce a strong thrust. An electric propulsion system is an alternative to a nuclear propulsion system. The total thrust is less powerful compared to a nuclear rocket but still enough to generate effects.
According to several studies, any engine used as a primary source of such dominant propulsion must generate exhaust velocities of around 10 to 20 km/s. There are also storable chemical orders used in rockets with an exhaust rate of around 5 km/s but in general is fewer not wasteful.
Propulsion systems that do not necessitate power through chemical responses are still required. There are electricity propulsion thrusters able to generate exhaust velocities around 10 to 20 km / s which step up payload and decrease the propellant mass. The consequences, however, are less powerful thrusters consuming bigger quantities of power.
The 3 Categories of Electric Propulsion
Electro thermal propulsion
Electric Propulsion Systems
Electro thermal propulsion strikes when the propellant is electrically heated after that isentropically expanded, producing a gas that is sent through a Convergent/Divergent (C/D) nozzle to generate thrust. Catalyzed hydrazine or an alternative neutral gas is used in thrusters similar to arc jets and resisto-jets. An arc jet can be used to heat the propellants through an electric arc discharge. The arc in the arc-jet electron beam is generated from the cathode and the anode in the tip. A constrictor is also present providing a narrow pathway between the two charges.
Electrostatic thrusters
Electrostatic thrusters also called ion thrusters. These use an ionized propellant accelerated through electric areas applied in a straight line like gridded ion thrusters and Hall thrusters. The method of propulsion is also recognized as ion propulsion method since ions are mainly used in the process. Electrostatic energy is used to produce propulsion. With electrons from the atoms stripped off and converted to ions. The ions are accelerated by electric forces to a high temperature without needing thermal energy producing thrust. The atoms after losing electrons become positively charged.
Electromagnetic thrusters
Electromagnetic thrusters produce thrust using electric and magnetic forces that interact with charged plasmas like ions and electrons. An example of this is the magnetoplasmadynamic thruster or MPD. The system heats the propellant to a plasma state before being accelerated. A large current is passed by electromagnetic forces through gas in order to ionize the propellant. Plasma is the ionized propellant which is then accelerated by Lorentz force, an electromagnetic force producing thrust.
Effect on Gas
Decoupling engine speed and power output from the propeller will supply the opportunity to get better effectiveness. Since electric forces and electromagnetic forces kick in for support, gas and diesel propulsion systems in vehicles will reduce the chances of wasting a huge part of power and energy. The chance of engine overload is eliminated resulting in better fuel economy and better gas mileage.
A study conducted to check how much electric propulsion systems can help gasoline and diesel engines indicates that at least 10% fuel savings achieved only with the engine allows to move together with the burden inefficiency because of low load with high speed. Larger propellers can also save as much as 7% of fuel compared to traditional models.
With the total load split between multiple generators, as much as 20% of fuel can be saved plus another 13% by matching the power produced by the engine to the power required by the propeller. A variable-speed generator will help accomplish this. Overall, 30% to 50% can be saved compared to a highly efficient diesel-electric or gasoline-electric system.
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Nowadays electric car for sale come in many forms today and also operate through various means and mechanisms. This is because more and more people have a great interenst in electric cars. But only those who are concerned about the environment and want to protect their wallets against the gasoline price hike will opt for an electric car, since you have, you are sure to be one of them.
If you do not have a electric car now but have a great interest in environmental issues and now you are looking for an electric car, you should know you can find many electric car for sale almost anywhere inside the United States, United Kingdom, and lots of other places around the world.
But one thing we must consider, before your purchase electric vehicle, you must to do a bit of research on it before you purchase it. You should also make sure you do not get ripped off and pay too much. Aka, some car dealers charging way too much for a electric car, and individuals do not even realize it and fall for this trick.
To prevent this we must have taken the time to familiarize themselves with the prices of electric cars. Here some guidelines through question to ask before you purchase electric vehicle.
Is it fuel efficient? Is it environmentally friendly? What are its other features? Check the interior and exterior of the electric vehicle just as you would when buying a conventional one. How much is it? The initial sum of buying a electric vehicle is usually higher compared to conventional cars.
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