Archive for May, 2010
Tuesday, May 25th, 2010
There are many hybrid vehicles on the market today. Unfortunately due to the unique technology they don’t come cheap, developments and experiments with high powered engines made them more expensive. The perks provided by luxury cars come at a price. If being environmental friendly is this heavy on the wallet then why buy?
Hybrid vehicles may be an instant shock to the wallet but they are beneficial in the long run. Apart from SUVs and luxury vehicles there are also compact four doors that may provide an alternative for the average Joe. Following the success of the Camry, Toyota has decided to give the model a fresh new trim by turning it into a hybrid. Using Toyota’s latest hybrid technology, the Camry may provide to be an alternative to expensive hybrids.
Camry facelift
The original Camry didn’t give its owner many problems. It’s priced right, big and powerful enough for the average Joe. With soaring gas prices, more people are willing to support and pay for hybrid technology. This prompted Toyota to hybridize its Camry to give customers a break from expensive sedans and Sports Utility vehicle hybrids.
Like other hybrids today, the Camry is equipped with a gasoline engine and electric motor combo. It has a 192 horsepower and runs at 38 miles per gallon. It still has the same accessories as of the previous Camry like alloy wheels, daytime headlights, power heated mirrors, six CD changer on the dashboard, eight way power and eight stereo speakers. The CD changer is compatible with a mp3.
It’s still equipped with standard safety features such as airbags in the front, on the seat mounts for side impact, at the side curtain, and for the driver’s knee.
The main difference is additional features. The hybrid Camry has a push button start system, Smart Entry keyless locking, power door locks, anti-lock out windows and the air-conditioning relies on the electric motor. It also has anti-lock breaking system and Toyota’s Vehicle Dynamics Integrated System. The latter has traction and stability control with other electronic devices for vehicle control.
The Camry may not look as stylish as other luxury sedans and SUVs. But if you are looking for an affordable car that has been tried and tested this would be a good car for you. You don’t really need lots of horsepower for city driving. The Camry provides the best of both worlds while still being able to be accessible for the average Joe.
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Thursday, May 20th, 2010
Hybrid vehicles have created a lot of hype. As a result, misinformation is all over the place. It is time to separate facts from fiction and clarify some of the myths created by the stir.
1. You can save money when you buy a hybrid car.
While you can definitely save money on gas, the amount of the hybrid car itself can set you back. Hybrid cars are not very expensive though. But if you are thinking that you can make back your investment, you got the wrong concept of buying a hybrid car. You buy a hybrid car because you want to reduce the demand for fuel, to help save the environment, and want to earn the bragging rights of one of the first to drive a hybrid.
2. Hybrid batteries need to be replaced.
The high cost of hybrid battery replacement is one of the main reasons why some may avoid buying a hybrid car. The fact is Toyota has claimed that there is not a single battery replacement reported due to wearing out or malfunction. Moreover, manufacturers issue a standard 80,000 and 100,000 miles warranty for hybrid batteries depending on the location of the dealer- though that does not mean that you have to replace your batteries after 100,000 miles.
3. Hybrid vehicles are very expensive to maintain.
Maintaining a hybrid car costs almost the same as maintaining a conventional gasoline-engine car. According to Honda website, the 5-year maintenance and repair costs for the Honda Civic Hybrid and Toyota Prius are $2,056 and $1,969 respectively; while the Honda Civic Si Sedan 6-Spd MT has a 5-year maintenance and repair cost of $2,137.
4. Hybrid cars are the only solution to environmental problems.
The number of hybrid vehicles on US roads may hit the 1 million mark sometime in 2008 but that doesn’t mean that is has solved the problems of the environment. There are approx. 200 million cars in the US that consumes roughly a total of 400 million gallons of fuel each day. Clearly, we have a long way to go.
5. Hybrid vehicles are small and underpowered.
If you limit your thinking to the Civic Hybrid’s 1.3 L engine and disregard the 20-hp electric motor, then you may think that hybrid vehicles are small and underpowered. Think of the Toyota Camry with its 2.4 L engine or the Chevrolet Tahoe Hybrid with its 6.0 L Vortec V8 engine. Hybrid cars are not only powerful, they are big.
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Saturday, May 15th, 2010
The engines in vehicles is a rather broad but interesting subject. People may be amazed to know that the ones currently in use today were drawn on several hundreds of blueprints before they were distributed to the market. The present models are the result of over a century worth of brainstorming and experience and will further influence the models of the future.
What is the ICE?
ICE stands for internal combustion engine wherein the combustion of fuel and an oxidizer occurs. The combustion chamber is the space where everything happens causing an exothermic reaction that produces gas at a high pressure and temperature. The expanding hot gases will directly put pressure on solid engine parts causing them to move. Pistons, rotors or the engine itself then begins movement which propels the entire vehicle.
The very first models of the ICE ran on an air/fuel mixture rather than compression. The initial part of the intake stroke sucks or blows in the mixture. Modern ICEs already incorporates in-cylinder compression. The engines were used in a variety of methods and industries like generators, boats, aircrafts and most particularly, automobiles.
The Operation
The internal combustion engine operates using a four-stroke cycle or the Otto cycle. The cycle involves four phases namely: induction, compression, power and exhaust. All of these aim to create an exothermic chemical process to start vehicle propulsion. During induction, oxygen or other oxidizers are introduced into the cylinder to act with the fuel. Compression then begins as the gases start a reaction that continuously increase temperature and pressure within the cylinder.
When enough pressure is applied on the corresponding engine parts, the engine begins to gain power through movement coming from direct force application. The aftermath of the entire compression process will lead to exhaustion of byproducts like carbon monoxide, carbon dioxide and nitrogen wastes. These gases are freely emitted into the atmosphere. The combustion process is started through engine ignition using the spark ignition method or the compression ignition system.
Where Does Gasoline Come In?
There are electric/gasoline-type systems that use a combination of lead-acid battery plus an induction coil to create a high-voltage electrical spark. The spark will then ignite the mix of air and fuel within the cylinder. The battery is rechargeable even during operation through an alternator or generator driven by the engine itself. Gasoline engines get an air and gasoline mixture to be compressed to less than 185 psi. The spark plug ignites the mixture during compression within the cylinder.
As for diesel engines, these require only heat and pressure produced by the engine during the compression process for ignition. Diesel compression is approximately three times higher compared to a gasoline engine. Diesel engines use air only. Some diesel fuel is sprayed into the cylinder with the use of a fuel injector just before peak compression to start ignition immediately. HCCI engines also require only heat and pressure but take in air and fuel. This process makes diesel and HCCI engines more prone to cold starts.
The Polluting Effects
Combustion products or the hot gases ignited and burnt inside the engine will have higher amounts of energy compared to the compressed fuel and air mixture. After available energy are used up to drive the engine pistons, remaining combustion products will be vented or exhausted through a valve or the exhaust outlet to bring back the piston in its original state also called TDC. Any heat which is not used up will become a waste product due to be removed from the engine via a liquid or air cooling system.
Air pollution emissions then result from incomplete combustion of carbonaceous fuel. Examples of engine byproducts are carbon monoxide, soot, nitrogen wastes, sulfur and uncombusted hydrocarbons. These also result if the products did not operate near the stoichiometric ratio required for effective combustion. The fuel would not have burnt very well due to factors like cool cylinder walls or lack of air. This is also known as quenching of the flame.
Both gasoline and diesel engines emit harmful gases that can be dangerous to humans as well as the environment. The greenhouse gases start trapping hot air within the atmosphere instead of allowing them to exit to space leading to global warming. The rise of the ICE or internal combustion engine finally showed its major flaw which is pollution.
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Tuesday, May 11th, 2010
Hybrid vehicles are slowly taking over the automotive market. Environmental issues and rising gas prices have prompted scientists and companies to provide alternatives. These vehicles provide an option for consumers and reduce dependence from fuel (ex. Diesel, petrol).
Hybrid technology has been steadily developing over the past centuries. Although diesel will always be a dominant power source for vehicles, other sources are also being utilized to reduce harmful impacts on the environment and health of the general public. This gives hybrid vehicles the edge over conventional vehicles today.
It is no doubt that mankind is not only depleting the planet of its natural resources but also causing its deterioration. The development of science and technology has made Hollywood sci-fi movie sets more feasible than we thought but it also brings a lot of consequences. The development of other power sources such as vehicles and fuels are beneficial in the long run to sustain life on earth.
Hybrid electric vehicles
Hybrid electric vehicles work by using an internal combustion engine which uses fuel and a rechargeable energy storage system. By using the combination of these two power sources the vehicle will be able to decrease fuel consumption, reduce pollution and noise emissions. It is different from the hybrid vehicle drive trains which uses a fuel power source and a rechargeable energy storage system.
Diesel engines are typically used to generate power for hybrid vehicles. These vehicles can also use biofuels which are renewable sources of energy. This reduces the dependence on petroleum for fuel. Decreased use of fuel leads to lesser emissions and lower costs.
These vehicles are able to recapture wasted energy and turn off the diesel engine during low output and idle periods such as traffic. The internal combustion engines are also much lighter and efficient when compared to conventional cars. The technology reduces the wear on the engine and the brakes. Contrary to popular belief hybrid electric vehicles batteries are not hazardous wastes. They can be recycled and reused.
These vehicles are suitable in urban environments where traffic is normal and there are more people in the streets. Emissions from cars are also harmful on the health of the general public.
These vehicles provide a practical alternative for environment conscious consumers. Gas prices, environment and health issues are all being addressed by this technology. Hopefully in the future these types of vehicles will be more accessible all over the world.
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Monday, May 10th, 2010
Buying a hybrid car may give you the bragging rights of being the first person in your neighborhood to drive a hybrid vehicle. But that does not end there. Harnessing the hybrid technology can actually give you several benefits you cannot expect from a conventional gasoline-engine car.
1. Fuel economy. Depending on the driving condition and driver’s habits, a gasoline powered family sedan can run 15-34 miles on a gallon of fuel. Hybrid cars, on the other hand can run 40-60% longer at 20- 60 miles on a gallon of gas. This is perhaps the biggest reason why hybrid cars are so popular today. And with the uncontrollable increase in pump prices, hybrid cars can solve at least one of the obvious problems.
2. Durability. The hybrid vehicle automatically shuts off its combustion engine when idling. Not only does it help to conserve gas, it also reduces the wear on the engine. Also, the regenerative braking system that recaptures the lost energy when braking reduces the wear on the brakes.
3. Tax credit reward. While the sticker price of one hybrid car can set you back several thousands more than its non-hybrid counterpart, you can actually enjoy a tax reward of as much as $3000 depending on what hybrid car you buy. Also, the government imposes several incentives exclusive to hybrid car owners like free parking among others.
4. Environmental impact. Hydrocarbons, nitrogen oxides, carbon monoxide, particulate matter (diesel), and formaldehyde also known as formalin are 5 noxious gases emitted by gasoline- or diesel-powered vehicles. These gases contribute to the greenhouse effect. In short, these gases are harmful to the environment. Since hybrid cars consume less fuel, they also emit less fumes.
5. Sophisticated design. If you only care about the looks of the car, then choose among one of the available hybrid cars on the market today and you’ll surely fall in love with one of them. Hybrid cars are among the best looking cars today.
6. Exclusivity. There are only a few hybrids among 200 million cars on the road today. And if you own one, then you’ll feel that you own an exotic car. While this won’t last long since many car manufacturers have announced more hybrid models in the future plus more and more hybrids are being sold everyday, it is still a good feeling that you are one of the first.
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Tuesday, May 4th, 2010
Global warming has become a major issue in the past year. Although environmental issues are recognized, they are not given that much attention on a wider scale. Now, more and more people are becoming aware of how much mankind has affected the planet. The need for solutions is recognized more than ever to address environmental issues. Due to this hybrid cars are becoming increasingly popular to consumers.
The shift from conventional cars is not just because of environmental concerns but also due to soaring gas prices. Hybrid vehicles bridge the gap between using an SUV and caring for the environment. There have been lots of improvements in the hybrid technology as the millennium came and it will be just a matter of time before it dominates the fuel dependent dominated automobile industry.
The hybrid vehicle drive train
Hybrids come in different types depending on their structures. Although they may differ in some aspects all of them are made with the same purpose. These vehicles are designed to reduce fuel consumption, reduce pollution and noise emissions and provide an alternative for customers.
They come in three structures. The parallel hybrid system has a diesel engine and an electric motor that is connected to a mechanical transmission. A large electrical generator and a motor are combined to replace the starter motor and the alternator.
A series hybrid system has a similar design with a electric battery vehicle. It is also referred to as the Range Extended Electric Vehicle. The difference is the diesel engine drives the electric generator instead of the vehicle’s wheels. The electric generator in turn charges the battery and powers the electric motor which propels the vehicle. A super capacitor or a flywheel can be added to recapture braking energy which reduces the losses in the battery.
The combined hybrid system, as it names suggests is a combination of the parallel and the series system. It is incorporated with power split devices so that the power paths placed from the engine to the wheels can be either electrical or mechanical. This is done to decouple the power supplied by the diesel engine from the power needed by the driver.
If a consumer wishes to convert his or her vehicle aftermarket kits are available. The owner has the option of buying a glider and a hybrid or an electric motor from the automaker. He or she will then receive the vehicle installed with the hybrid drive train structure.
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