Richer air-fuel mixtures ________ . a. Decrease the electrical resistance inside the cylinder and decrease the required firing voltage. b. Increase the electrical resistance inside the cylinder and increase the required firing voltage. c. Increase the electrical resistance inside the cylinder and decrease the required firing voltage. d. Have no measurable effect on cylinder resistance.

Richer air-fuel mixtures ________ . a. Decrease the electrical resistance inside the cylinder and decrease the required firing voltage. b. Increase the electrical resistance inside the cylinder and increase the required firing voltage. c. Increase the electrical resistance inside the cylinder and decrease the required firing voltage. d. Have no measurable effect on cylinder resistance.

Automotive Technology: A Systems Approach (MindTap Course List)

6th Edition

ISBN:9781133612315

Author:Jack Erjavec, Rob Thompson

Publisher:Jack Erjavec, Rob Thompson

Chapter9: Automotive Engine Designs And Diagnosis

Section: Chapter Questions

Problem 3RQ: As an engines compression ratio increases, what should happen to the octane rating of the gasoline?

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