Cummins PGA - Insulating MaterialsMentor: Robert RossiniPatrick CleaverJustin FernandezEthan Taylor

Cummins Company Background

Founded in 1919 by Clessie Cummins selling diesel tractor engines

Today employs 33,500 employees Net income of $715 million off of $11.4

billion in sales in 2006 Headquartered in Columbus, OH

PGA history

Headquartered in Fridley, MN Beginnings in 1929 with David Onan’s

invention of the first single generator Became a wholly owned subsidary of

Cummins, Inc in 1992

PGA Today

$2.4 billion in sales in 2006 Provides total power generation systems including

engines, controls, alternators, transfer switches and switchgear

Provides standby power, distributed generation power, auxiliary power generation for mobile applications

Highly diversified customer base in U.S., China, India, Brazil, and the Middle East

Anatomy of a Generator systemTurbocharger Air Filtration

Control System

Alternator

Fan

Engine

Fuel System

Enclosures

Recessed doors

Exhaust Air Intake

Sound Insulation

Current methods/materials

Fiberglass, slag wool, mineral wool, and… Perforated stainless steel sheets Steel sheets prevents contact between

mineral wool and generator

Materials Issues

Current materials that are used are difficult to work with

A more workable material could save liability, labor, and material costs.

Need for change

Workability (easy to use, not necessarily good to use)

Replacement of perforated stainless steel sheet metal

Liability issues/costs

Cost of current products/methods Labor costs Cost of materials

Issues with current products

Health Issues: Irritant of the eyes, nose, throat, and skin

Possible law suit Aesthetics of perforated steel and

insulation wrapping Inhalation of fibers and respiratory effects

Cost Benefit of change

Cost not necessarily an issue A product that meets/exceeds the

qualifications of current product Same or higher cost is acceptable for a

better material More worker friendly

Desirable material properties

Withstand high temperatures Exhaust temps vary from 1300-1400F for

unleaded gasoline and 800-900F for diesel Sound attenuating Non-hydroscopic