ABSTRACT

REGENERATIVE SUSPENSION SYSTEM

In the past decade, regenerative braking systems have become increasingly

Popular, recovering energy that would otherwise be lost through braking.

However, another energyrecovery mechanism that is still in the research stages is

regenerative suspension systems. Thistechnology has the ability to continuously

recover a vehicle's vibration energy dissipation thatoccurs due to road

irregularities, vehicle acceleration, and braking, and use the energy to reduce fuel

consumption.

A regenerative shock absorber is a type of shock absorber that converts parasitic

intermittent linear motion and vibration into useful energy, such as electricity.

Conventional shock absorbers simply dissipate this energy as heat.

When used in an electric vehicle or hybrid electric vehicle the electricity generated

by the shock absorber can be diverted to its powertrain to increase battery life. In

non-electric vehicles the electricity can be used to power accessories such as air

conditioning. Several different systems have been developed recently, though they

are still in stages of development and not installed on production vehicles.

This could be used on electric or hybrid vehicles (or normal vehicles) to capture

energy which would otherwise be absorbed and wasted, and then convert it into

electricity. The regenerative shock absorbers can harvest the power in a continuous

way. On thesmooth highway road, the regenerative shock absorbers can improve

the fuel efficiency by 2%, and onbumpy roads up to 10% increase can be expected.

THE SCOPE FOR PROJECT

In our country due to increased paying capacity, advanced lifestyle and rapidly

growing industrialization, the need & demand of transportation is increasing day-

by- day. The number of vehicles rolling on the road is increasing daily. Hence

chances of accidents are increasing while crossing the road especially by the

children and old persons. So it became necessary to install the speed breakers (in

true sense speed reducers) at the school building or Hospital building- side road

or highway. If these speed breakers Yes! In true sense it is speed and ultimately

breaker the opposing impact energy supplied by the hard speed breaker will apply

massive thrust impact on the suspension system of the vehicle. This impact force

can be use for power generation using regenerative method and use to charge

battery and release load of alternator or dynamo from engine.

Here on working this group task we over-come our following needs:-

We became able to have market survey

Doped capability of designing a system by collecting necessary data.

Learnt actual practical fabrication processes of the sub-components of the

system.

Planning the cost estimation and budget.

Duties of a technician or an Engineer.

SELECTION OF PROJECT

We the group of young engineers found that, there is an impending need to make

much more forays to make Non Conventional energy attain popular acclaim. This

is also very essential to preserve the conventional sources of energy and explore

viable alternatives like sustainable energy (the energy which we are already

utilizing but for some safety of other uses we are suddenly wasting it, that can be

reutilized), solar, wind and biomass that can enhance sustainable growth. What is

more, such alternatives are environment friendly and easily replenish

able. Therefore, they need to be thoroughly exploited with a functionally

expedient, energy matrix mix.

Growing economies, especially of Asia are gifted with sufficient resource base and

non-conventional energy technologies are consistent both for grid linked energy

generation and transmission in out of the way locales that are islanded from the

grid. Adaptation of technology and employing them should be pursued right from

this moment to have a head start, be informed of the barriers in technology

applications of the renewable variety and synergizing them with the existing,

traditional power production technology and T&D networks. It is known that in

coming times, wind energy will be the most cost-effective renewable resource.

Yet, it is doubtful if any individual technology would hold centre-stage.

Thus we selected kinetic generator means the “Energy in motion when it is

suddenly applied with a sort of obstacle, then according to Newton’s law for

every action there is an equal and opposite reaction. Utilization of this reaction

is the basic reason behind the selection of this project work.”

FIG 1: The set up flow diagram

WORKING OF PROJECT

Regenerative suspension basically new concept of non-conventional energy

generation. It is electro-mechanical energy generating machine. This machine

converts reciprocating motion in to rotary motion. The rotational power is stored

in flywheel & flywheel rotates dynamo, which generates electricity.

Here first important point is how we get reciprocating motion, which is prime

input in the system. For that we use weight of moving vehicles that run on roads.

We put our mechanism on bike suspension, the head of rack with pinion. When

vehicles move on speed breaker rack will be reciprocate. The rack is attached with

pinion that rotates in one direction only. The rack & pinion arrangement convert

reciprocating motion in to rotary motion.

This rotary motion is further magnified using chain drive. The output of free

wheel is attached with flywheel which stores kinetic energy and transfer to

dynamo which generate electricity with zero cost.

AVAILABLE ENERGY

OF THE MOVING

VEHICLE TO APPLY

IMPACT FORCE ON

THE SPEED BREAKER

TRAIN OF GEAR AND

PULLEYS AND

GENERATOR SYSTEM

POWER GENERTAED

IN TERMA OF

GLOWING BULB OR

CHARGING BATTERY

A "generator" and "motor" is essentially the same thing: what you call it depends

on whether electricity is going into the unit or coming out of it. A generator

produces electricity. In a generator, something causes the shaft and armature to

spin. An electric current is generated, as shown in the picture (lightning bolt).Lots

of things can be used to make a shaft spin - a pinwheel, a crank, a bicycle, a water

wheel, a diesel engine, or even a jet engine. They're of different sizes but it's the

same general idea. It doesn't matter what's used to spin the shaft - the electricity

that's produced is the same.

METHODOLOGY

Here following method is adopted to generate the electricity:-

The set up is designed.

It’s subcomponents are manufactured

The sub components are assembled together

The set up is tested for checking whether it performing it’s intended task or

not.

Under this method the fly wheel is the key component for energy

transformation.

Flywheel

Introduction

Flywheel is a device to smoothen the cyclic fluctuation of speed change when

delivering constant output power from the engine. It has no influence on the

mere speed of the prime mover. It has no influence on the varying load demand

on the prime mover or the delivered power from the prime mover. In is the

forgoing discussion, it is observed that turning moment diagrams for the cycle

show period during which torque is in excess of the mean torque responsible for

the constant power output and also periods during which the torque is less than

the mean torque. Thus the speed of the flywheel would increase during period of

excess of torque during the cycle and the speed will fall during the period of the

deficit torque during the cycle. Thus a flywheel stores energy and releases energy

during the cycle without affecting mean energy output. Thus a properly designed

flywheel has to ensure the cyclic fluctuations of speed within prescribed limits

preferably as small as possible.

Definition of the flywheel:-

A flywheel used in machine serves as a reservoir which stores energy during the

period when the supply of energy is more than the requirement and releases it

during the period when the requirement of energy is more than the supply.

Working of the flywheel:-

The excess energy is developed during power stroke is absorbed by flywheel and

releases it to the crankshaft during the other stroke in which no energy is

developed, thus rotating the crankshaft at a uniform speed. A little consideration

will show that when the flywheel absorbs energy, its speed increases and when it

releases energy, the speed decreases. Hence a flywheel does not maintain a

constant speed; it simply reduces the fluctuation of speed. In other words, a

flywheel controls the speed variations caused by the fluctuation of the engine

turning moment during each cycle of operation.

Application:-

Flywheel are mostly used in machine where the operation is intermitted like

punching machines, shearing machines, riveting machines, crushers etc, the

flywheel stores energy from the power source during the greater portion of the

operating cycle and gives it up during a small period of the cycle. Thus the energy

from power source to the machines is supplied practically at a constant rate

throughout the operation.

Bike front suspension

Rack

shaft

Free wheel

Handle

Pinion

Support

Base

column