2. HYBRID VEHICLES
A hybrid electric vehicle (HEV) is a type of hybrid
vehicle and electric vehicle
Fusion between an internal combustion engine
(ICE) and electric motor—achieving different
functions through different power combinati ons
3. WHY HEV ?
Regenerative braking actually makes city driving more
economical than on the highway.
Fuel efficiency is greatly increased (twice).
Emissions(heating) are greatly decreased.
Dependency on fossils fuels can be decreased.
Can be run on alternative fuels as well.
4. Global-Warming: Still An Issue
Hybrids are not zero-emission(heating) vehicles.
Will cut down emissions of global-warming pollutants
by a third to a half.
11. About HEVs
HEVs offer the efficiency of electric-powered vehicles
without having to recharge by using conventional engines
Efficiencies are gained from motor down-sizing and
Inherent flexibility allows use for run multiple
12. How much would the car cost to
maintain and manufacture?
Maintenance: air filter change, change the battery
about every 64,380 kilometres.
Oil changes about 8,050-16,093 kilometres
Very similar cost to other normal cars
Offer less maintenance than ordinary cars
14. Parrallel hybrid Syatem
In a parallel hybrid system, both the engine and the electric
motor drive the wheels, and the drive power from these two
sources can be utilized according to the prevailing
because the power flows to the wheels in parallel. In this
system, the battery is charged by switching the electric
motor to act as a generator, and the electricity from the
battery is used to drive the wheels.
Although it has a simple structure, the parallel hybrid
system cannot drive the wheels from the electric motor
while simultaneously charging the battery since the system
has only one motor
15. Serial Hybrid System
The engine drives a genertor & an electric motor use
this generated electicity to drive the whill
Because power flows in the whill in series I,e, the
engine power & the motor power are in series
It can supply electicity to the electric motor &
efficiently charge the battery
17. Advantages and disadvantages
of hybrid cars?
Reduce the dependency
on fossil fuels
Better for environment
More weight due to
Risky in accidents
Batteries are non-
Disposal of batteries.
18. POWER SPLIT HYBRIDS
It combines both Series and Parallel Hybrids
Series hybrids tend to be more efficient at lower speeds
and parallel tend to be more efficient at high speeds
Hence It is more efficient
19. POWER SPLIT HYBRIDS
It has two motors, and depending on the driving
conditions, uses only the electric motor or the driving
power from both the electric motor and the engine, in
order to achieve the highest efficiency level.
Furthermore, when necessary, the system drives the
wheels while simultaneously generating electricity
using a generator.
This is the system used in the toyota Prius and the
Reduced fuel consumption(less Fuel Requered)
Excellent gas mileagr
Lighter batteries than electric vehicles
Regenerative braking system stores electrical energy in
Uses less fuel to recharge batteries
So, the HEVs have more efficiency, Low Fuel Economy,
High Reliability and Less Air Pollution.
Optimum Utilisation of these Vehicles will yield in
good Results, especially Reduction of pollution.