Energy harvesting shock absorber

7/30/2019 Energy harvesting shock absorber

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Energy harvesting

Shock Absorber

(EHSA)

MD AFZALUL KARIM

KAYAODE OYEKU

CHRISTOPHER WINTON


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MSES 5030 Product Design and Development 2

Project Proposal

Introduction

The piezoelectric effect describes the relation between a mechanical stress and anelectrical voltage in solids.It is reversible: an applied mechanical stress will generate a voltage and an appliedvoltage will change the shape of the solid by a small amount (up to a 4% change involume).In physics, the piezoelectric effect can be described as the link between electrostatics andmechanics.

This technology is already being used in a variety of common tools such as cigarettelighters and push-ignition barbecue grills. Piezoelectricity has the potential to provide uswith a great source of green energy if it is properly utilized. As with many otherrenewable energy sources, scientists are diligently working to find the best possible waysto harvest piezoelectric energy.

Proposal

Our target is to make a shock absorber in car suspension system using piezo-material toget piezo-electricity through vibration of the car. It can then use a secondary (backup)power source for the car.


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Mission Statement

Product description:

Shock absorber with energy harvesting capability Maximizing the smoothness of the vehicle driving

Benefit Proposition: Secondary battery source

Key business goals:

10% battery coverage for the car Much less price than current market price approx. $500 First product introduction will be mid 2013

Primary Market: Environmentally friendly Contribute to the renewable energy sector

Secondary Market

Casual consumer Light-duty professional

Assumptions: New product platform Energy harvesting technology Compatible with all motor vehicles

Constraints:

Need extra space in the car for battery system Upper and lower arm of the suspension system may be

bulky Too high and too low temperature might be a problem

Stakeholders: Customers Manufacturer Distributor and reseller Government


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CUSTOMER NEEDS

Customer statement:

The EHSA does not last long The EHSA creates much noise The EHSA effects the regular shock absorber The EHSA unable to work while turning the vehicle The EHSA has to much weight The EHSA is less efficient The EHSA structural material effected by environment The EHSA is hard to fix The EHSA creates extra bump during driving

The EHSA takes extra space Sometimes generate less power than required one. The EHSA becomes too hot within couple of hours driving.

Interpreted Need:

The EHSA lasts a long time The EHSA has noise reduction capability The EHSA has no negative impact on the regular shock absorber

The EHSA is easy to control (suspension system) while turning the vehicle The EHSA has less weight than regular shock absorber. The EHSA is efficient The EHSA operates normally in any environment. The EHSA is easy to fix. The EHSA operates normally like regular shock absorber. The EHSA produces required power. The EHSA protected from unwanted heat.


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Target SpecificationNo Metric Imp Units Value

1 Spring Length 5 mm


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Concept Generation

Material Mechanical ElectricalEnergy

Hydraulic

Pneumatic

Spring

Piezo-

material Generator

There are three ways to get electrical energy from the piezomaterial:

1. Using Hydralic pressure

2. Using Pneumatic presuure

3. Using spring vibration

Among them most convenient and cost efficient procedure will be selected for the

project.

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Documents

Energy harvesting shock absorber