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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

While discussing the compression ratios used with engines equipped with a GDI system: Technician A says that higher ratios can be used because ignition timing is normally very advanced. Technician B says that higher ratios are possible because the small droplets of fuel injected directly into the cylinder tend to cool the mixture in the cylinder. 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

In a GDI system, the following points are true:

  • The injectors are designed to deliver the fuel to high pressure and high-temperature cylinder.
  • The injectors spray the fuel in small droplets which cools the mixture with air. The injectors close immediately to prevent the heated nozzles tips of the injector to ignite the fuel...

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