CarDrives: What is a Hybrid Vehicle (HV)?

Friday, May 8, 2009

What is a Hybrid Vehicle (HV)?

A hybrid vehicle (HV) is a vehicle that uses two or more fuel sources like:

-An on-board rechargeable energy storage system (RESS) and a fueled power source for vehicle force

-Human powered bicycle with battery assist

-A sail boat with electric energy

-The term most commonly refers to Hybrid-electric vehicle (HEV) which includes internal ignition engines and electric motors (generally sourced by electric batteries or other rechargeable energy storage system (RESS).

HV History

One of the original hybrid vehicles were simply boats with both sails and oars, like the Greek Trireme Warships. These used a sail for traveling with the wind, and the oars for when there was insufficient wind, or in circumstances that the sail was unfavorable (such as naval combat, in the case of the triremes).

Hybrid forms by engines

Hybrid Electric Petroleum Vehicles (HEPV)

When the term hybrid vehicle is used, it most often refers to a Hybrid electric vehicle. These encompass such vehicles as the Toyota Prius, Toyota Camry Hybrid, Ford Escape Hybrid, Honda Insight and others. A petroleum-electric hybrid most commonly uses internal combustion engines (generally gasoline or Diesel engines, powered by a variety of fuels) and electric batteries to power electric motors. There are many types of petroleum-electric hybrid drivetrains from Full hybrid to Mild hybrid which offer varying advantages and disadvantages

Hybrid Fuel (dual mode)

In addition to vehicles that use two or more different tactics for force, some also consider vehicles that use separate energy input types (“fuels”) using the same tank and engine to be hybrids, although to avoid misunderstanding with hybrids as described above and to use correctly the terms, these are depicted as dual mode vehicles;

Some electric trolley/buses can switch between an on board diesel engine and overhead electrical power depending on conditions.

Elastic-fuel vehicles can use a mixture of put in fuels (petroleum and biofuels) in one tank, classically gasoline and bioethanol or biobutanol, though biodiesel vehicles would also qualify. Liquefied Petroleum Gas (LPG) and Compressed Natural Gas (CNG) are very different from each other and cannot be used in the same tanks, so it would be impossible to build an (LPG - CNG) flexible fuel system.

Some vehicles have been modified to use another fuel source if it is available, such as cars modified to run on LPG and Diesels or CNG and Petrol.

Power aid devices for bicycles and other human sourced vehicles are also included.

Plug-in hybrid electric vehicles (PHEV) is an up-and-coming type of automobile which can use traditional liquid combustibles and electricity as fuels. Such vehicles could reduce fossil fuel consumption, pollution, and operating costs. If equipped with vehicle to grid technology they could also help stabilize the electric grid by acting as load balance devices. By reducing the amount of liquid fuel required they could also help biofuels meet a larger portion of our fuel demands.

Continuously Recharged Battery Electric Vehicle (CRBEV)

Say in perfect conditions, CRBEVs can be recharged while the user drives. The CRBEV starts contact with an electrified rail, plate or overhead wires on the highway via an attached conducting wheel or other similar mechanism. The CRBEV’s batteries are recharged by this process on the highway and can then be used normally on other roads.

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