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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 that air-fuel ratios can be regulated by controlling the “on time” of the injectors. Technician B says that the air-fuel ratio can be regulated by controlling the pressure applied to the individual injectors. Who is correct?

a. Technician A

b. Technician B

c. Both A and B

d. Neither A nor B

To determine

Whether Technician A or Technician B is correct.

Explanation

The air-fuel ratio in a combustion engine is controlled by the following ways:

  • The PCM takes the input from the temperature sensor located in an appropriate position to measure the temperature of the coolant and exhaust and refers to the look-up table registered in the memory. On receiving suitable input parameters, the PCM will excite the preliminary mechanism to open or close the nozzle...

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