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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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BuyFindarrow_forward

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315
Textbook Problem

Technician A says piezo material is a type of crystal that rapidly shrinks when it is exposed to electrical current. Technician B says piezo material shrinks very slowly when current to it is stopped. Who is correct?

a. Technician A

b. Technician B

c. Both A and B

d. Neither A nor B

To determine

The technician A’s statement is correct or technician B’s statement is correct.

Explanation

Piezo material changes their structure, that is, it expands slightly when an electrical voltage is applied to it. Several piezo materials are stacked one above the other in the injector. As the electric current is provided to this stack, they expand and linear movement takes place and allow fuel to spray out of the nozzle. Hence, technician A is not correct.

Piezo material shrinks quickly when the electric current is stopped...

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