AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
7th Edition
ISBN: 9781337792158
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 34, Problem 1SA
A rich air-fuel ratio causes HC emissions to ________.
Expert Solution & Answer
To determine
The appropriate word to fill in the blank in the statement “ A rich air-fuel causes HC emissions to _______”.
Answer to Problem 1SA
A rich air-fuel ratio causes higher HC emissions.
Explanation of Solution
Unburned hydrocarbons are usually, vapors of gasoline that have not been burned during combustion. HC emissions illustrate that the combustion of fuel is not completed in the engine cylinder. The amount of HC depends on certain engine conditions, one of which is a rich air-fuel ratio. Whenever the mixture of air-fuel is extremely rich it causes higher HC and CO emissions.
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Chapter 34 Solutions
AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
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Ch. 34 - Which of the following statements about EVAP...Ch. 34 - As a catalytic converter begins to deteriorate,...Ch. 34 - How much pressure does a typical EVAP pressure...Ch. 34 - Which of the following exhaust gases is typically...Ch. 34 - Prob. 7MCCh. 34 - While discussing the proper way to test a...Ch. 34 - Prob. 2ASRQCh. 34 - While discussing catalytic converter diagnosis:...Ch. 34 - While discussing EGR valve diagnosis: Technician A...Ch. 34 - While discussing EGR valve diagnosis: Technician A...Ch. 34 - When discussing the diagnosis of a positive back...Ch. 34 - While diagnosing a PCV problem: Technician A says...Ch. 34 - Technician A says that the AIR system should pump...Ch. 34 - While discussing PCV system diagnosis: Technician...Ch. 34 - While discussing EVAP testing: Technician A says...
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