Động cơ Hybrid - hybrid-engine

ADVANCEMENTS IN
ADVANCEMENTS IN
HYBRID ENGINE
HYBRID ENGINE
TECHNOLOGY
TECHNOLOGY
Introduction
Introduction

Definition

Need for hybrid engines

Brief History
Definition
Definition

Hybrid Engines are typically described as
engines with two power sources.

A hybrid electric vehicle (HEV) is a type of 
hybrid vehicle and electric vehicle which
combines a conventional 
internal combustion engine (ICE) propulsion
 system with an electric propulsion system.
Need for hybrid engines:
Need for hybrid engines:

Greener Earth

Global warming


Sustainable development

Increasing price of fuel
Electric Motor
Electric Motor

Lots of torque

Zero emissions

Tax breaks

No transmission needed

Starts more efficiently
◦
Can turn off motor when you stop
Gasoline
Gasoline

Higher energy density than batteries
◦ 1,000 pounds of batteries = 1 gallon (7 pounds) of
gas

Cheaper initial cost for car
◦ Hybrids are $3500-5000 more

Reliable, more history
Brief History:

Brief History:

1900 - Ferdinand Porsche developed a gasoline-electric
hybrid

1997 – Toyota Prius

1999 – Honda Insight

2000 – Hybrids become core market
Advancements in hybrid
Advancements in hybrid
powertrains
powertrains

Hybrid electric vehicles can be classified according to the
way in which power is supplied to the drivetrain:
PARALLEL HYBRIDS:

In parallel hybrids, the ICE and the electric motor are both
connected to the mechanical transmission and can
simultaneously transmit power to drive the wheels.

 Usually parallel hybrids can use a smaller battery pack as
they rely more on regenerative braking and the internal
combustion engine can also act a generator for supplemental
recharging.

Parallel hybrids are more efficient for highway driving than in
urban stop-and-go conditions.