Posted: November 28th, 2013
General Purpose: Inform about hybrid cars.
Purpose Statement: Inform the audience about hybrid cars.
- I. A hybrid car is one that has two sources of power. These sources are gasoline engine and electric motor. They are an alternative to gasoline cars because they are environmentally friendly. This is because they cut down on pollutants and emissions.
- II. Hybrid cars are also economically friendly. They save on gas and have low maintenance costs.
Thesis Statement: Hybrid vehicles are efficient because they are both cost effective and environmentally friendly.
Transition: Hybrid vehicles vary depending on the kind of hybrid technology that has been used in manufacturing the vehicle. Let us move to the various types of hybrid vehicles.
- I. Various criteria are used in classifying the different types of hybrid vehicles.
- Hybrid vehicles are classified as either parallel or series hybrid. In the former, the engine and electric motor rotate the wheels while in the latter, the motor rotates the wheel while the engine generates electricity (Hantula & Voege, 2010)
- The other form of classification is based on the hybrid technology that is available for the automakers. The five types of technology are Idle-off Capability, Regenerative Breaking, Power Assist and Engine Downsizing, Electric-only Drive and finally Extended Battery-electric range.
- Examples of hybrid vehicles are, Honda Accord, Honda Civic, Lexus RX400h, Ford’s Mercury Mariner and Toyota’s Prius.
Transition: Having looked at the classification and examples of hybrid vehicles, we can move to the efficiency of hybrid cars.
- II. The hybrid vehicle is efficient because of various reasons.
- The hybrid vehicle combines the power from both its engines to give the vehicle extra horsepower.
- The vehicles also give relatively low emissions to the environment. There are different kinds of hybrid cars depending on the level of emissions. They are super ultra low emission vehicles and ultra low emission vehicles.
Transition: Having seen how efficient hybrid cars are, we can look at their malfunction, maintenance and future of the hybrid cars.
- III. Little goes into the maintenance of the hybrid vehicle.
- Hybrid cars need less maintenance than the normal cars. Decreased wear and tear reduces the maintenance costs. This is because of technology such as regenerative braking. Its battery also receives energy from the regenerative braking.
- One of the malfunctions is that fixing the vehicles is relatively hard. The hybrid is a new vehicle and not many garages have embraced its technology. It is also hugely expensive to replace the battery once it wears out. Fully charging the battery also reduces its life span.
- In the future, lithium-ion batteries are to be used. This is because they offer a higher power density compared to the NiMH batteries. However, companies like Toyota are still trying to overcome the challenges of the lithium-ion batteries before putting them in the market.
- I. The hybrid vehicles may have a number of shortcomings but with its benefits to the environment seem to outweigh the shortcomings. Given time and the appropriate technology, these shortcomings can be dealt with.
Hantula, R., & Voege, D. (2010). How do hybrid cars work?. New York: Chelsea Clubhouse.
Juettner, B. (2009). Hybrid cars. Chicago, Ill: Norwood House Press.