1. ADVANCEMENTS IN
HYBRID ELECTRIC
VEHICLE
Presented by,
R.Pranav Ram B.E (Mechanical Engg.)
J.Venkatesh B.E (Mechanical Engg.)
Ramco Institute Of Technology, Rajapalayam

2. Evolution of Electric cars
 Elektromobil , first invented electric vehicle by Lohner-Porsche
 Introduced to overcome noise and pollution
 A public show ‘Paris Exposition of 1900’.
 Later added IC engine, runs at 61 kmph.
 Toyoto’s Prius made huge impact in 1997 .
 1Millon worldwide customers.

3. Hybrid Electric Vehicle
 A Hybrid electric vehicle (HEV) is a type of vehicle that uses both
an electric engine and a conventional internal combustion engine.
Why do we go for HEV ???
 Improved Fuel Economy
 CO2 Reduction Potential
 Better Acceleration
 Reduced Emissions

4. Salient Features
 Regenerative braking - Energy wasted during
braking is converted and stored in the battery
 Auto-start/auto-shutdown - Automatically
shuts down during idling
 Electric motor assist - Electric motor allows the
engine to be more efficient in nature.

5. Types of Hybrids
 There are 3 major categories, they are
Series Hybrid
Parallel Hybrid
Combined

6. Parallel Hybrid Vehicle
 A HEV with parallel configuration has direct connection with
power unit and wheels
 Also connects Electric motor with driving wheels.
 Disconnect clutch between the engine and transmission to
allow electric launch without starting the engine
 Example:
◦ ACCELERATION - ELECTRIC MOTOR
◦ DRIVING IN HIGHWAYS - IC ENGINE

8. Series Hybrid Vehicle
 In Series configuration IC Engine supplies energy to motor
for driving the wheels.
 No MECHANICAL connection between Hybrid power unit
and wheels.
 Has higher battery backup than parallel configuration.
Example :
We have Starter motor to set the piston in proper position

11. Combined Vehicle
 Combined hybrid systems have features of both series and
parallel hybrids.
 There is a double connection between the engine and the
drive axle: mechanical and electrical.
 This split power path allows interconnecting mechanical and
electrical power, at some cost in complexity.
 Power-split devices are incorporated.
 At low speeds powered by motor.

13. SWOT Analysis
Strength :
◦ Fuel efficient
◦ Large flexibility
◦ Oil consumption is less
◦ Carbon-based emission is lower
Weakness:
◦ Higher battery pack and high cost
◦ Total weight ,cost and size of the powertrain can be
excessive.

14. SWOT Analysis Contd.
• Opportunities:
Technology Development
Economic benefit
• Threaten:
Huge Demand in Power supply

15. Toyota Prius
 First Emerged hybrid car commercially.
 Current edition is FOURTH GENERATION.

16. THANK YOU