Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 12RQ
Which emission control system introduces exhaust gases into the intake air to reduce the formation of NOXin the combustion chamber?
- EVAP
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Chapter 4 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 4 - Prob. 1RQCh. 4 - Explain the four strokes of the internal...Ch. 4 - In addition to the battery, what does the charging...Ch. 4 - Which of the following is not a common emission...Ch. 4 - Automatic transmissions use a instead of a clutch...Ch. 4 - Which of the following is not one of the strokes...Ch. 4 - Prob. 7RQCh. 4 - Which is not a common automotive fuel? Gasoline...Ch. 4 - What does the valve train do? It delivers fuel to...Ch. 4 - Technician A says that liquid cooling an engine...
Ch. 4 - Prob. 11RQCh. 4 - Which emission control system introduces exhaust...Ch. 4 - Prob. 13RQCh. 4 - Technician A says that a transaxle delivers torque...Ch. 4 - Which of the following is not part of the running...Ch. 4 - Which of the following statements about unibody...Ch. 4 - Which type of transmission uses pulleys to change...Ch. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - What two major engine components work together to...Ch. 4 - Technician A says that an air-conditioning system...Ch. 4 - The boiling point of the coolant in an engines...Ch. 4 - While discussing the operation of air-conditioning...Ch. 4 - Prob. 24RQCh. 4 - Which of the following is not accomplished by the...
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- What are three possible problems that can allow fuel pressure to rapidly bleed down once the engine is shut off?arrow_forwardIncreasing engine speed will decrease the engine knocking tendency because: Select one: Combustion speed will increase due to higher air speed inside the combustion chamber O b All of the choices Oc Intake pressure will decrease due to lower volumetric efficiency Od Duration of engine reactions will decreasearrow_forwardExcessive oxygen in the exhaust indicates an improper air/fuel mixture. True Falsearrow_forward
- Which is not a cause of detonation? Wrong ignition timing Allowing the engine to overheat Fuel/air mixture too lean Using a fuel grade higher than recommendedarrow_forwardTechnician A says that the catalytic converter is used only to quiet the noise of the exhaust. Technician B says that the catalytic converter is used to alter the contents of the engines exhaust. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward1) Which one of the following is an undesirable byproduct of combustion in IC engines that is caused due to high temperature conditions? O Unburnt hydrocarbons. O Soot O Carbon monoxide. O Oxides of nitrogen. 2) Which one of the following statements is true about emissions from Sl engines? OA rich fuel-air mixture decreases the tendency for more HC emissions ONOX emissions would be maximum at a slightly rich mixture O NOx emissions decrease as the fuel-air mixture becomes either too rich or too lean. OA lean fuel-air mixture increases the tendency for more CO emissions 3) Which one of the following is correct about HC emission? O t is reflective of complete combustion of fuel. It results due to improper mixing of fuel and air O Unburnt HCs do not contribute to photochemical smog. O It decreases as the fuelair mixture becomes too leanarrow_forward
- which of the following is an indicator of combustion efficiency and not emission?arrow_forwardHow does a GDI system provide for a stratified charge in the combustion chamber?arrow_forwardWhile diagnosing the cause for blue smoke from the tailpipe of a gasoline engine; Technician A says that a faulty fuel injection system is a likely cause. Technician B says that it is most likely caused by coolant leaking into the combustion chamber. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Describe carbon monoxide (CO) emissions in relation to air-fuel ratio.arrow_forwardWhile discussing electric exhaust gas recirculation (EEGR) systems: Technician A says that some are air cooled. Technician B says that some are cooled by engine coolant. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardDifferentiate the two types of external combustion enginearrow_forward
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