Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 33, Problem 7SA
Describe how a selective catalytic reduction system works.
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Students have asked these similar questions
10) Which one of the following statements is incorrect about a catalytic converter?
O It is not very efficient at lower temperatures.
O Its NOx conversion efficiency is highest for very lean mixtures.
O Its CO conversion efficiency is high for lean mixtures.
O Lead reduces its effectiveness.
11) Which one of the following is true about a particulate trap?
O It is predominantly used in Sl engines.
O It does not offer a restriction to exhaust flow.
O It requires periodic regeneration.
O It is predominantly used to reduce NOx emissions.
What classification of catalysts are used in automotive catalytic converters?
What the differences between from the following:
-Natural and refinery gas
-Thermal and catalytic reforming
Chapter 33 Solutions
Automotive Technology
Ch. 33 - Explain why a small PCV valve opening is adequate...Ch. 33 - At what temperature do nitrogen atoms combine with...Ch. 33 - Describe the operation of a digital EGR valve.Ch. 33 - Name the three types of emissions being controlled...Ch. 33 - The PCV system prevents from escaping to the...Ch. 33 - In a negative backpressure EGR valve, if the...Ch. 33 - Describe how a selective catalytic reduction...Ch. 33 - HC emissions may come from the tailpipe or...Ch. 33 - What types of catalyst are typically used to...Ch. 33 - Why is a PCV system critical to an engines...
Ch. 33 - What is a catalyst?Ch. 33 - Rather then rely on the AIR system for extra...Ch. 33 - Why do the EGR systems on many late-model diesel...Ch. 33 - Which of the following systems is designed to...Ch. 33 - Which of the following statements about carbon...Ch. 33 - While discussing PCV valve operation: Technician A...Ch. 33 - While discussing EGR systems with a differential...Ch. 33 - While discussing evaporative (EVAP) systems:...Ch. 33 - Technician A says that an EGR valve that is stuck...Ch. 33 - While discussing SCR systems: Technician A says...Ch. 33 - While discussing automotive emissions: Technician...Ch. 33 - Technician A says that during oxidation, as NOx...Ch. 33 - While discussing PCV systems without a PCV valve:...Ch. 33 - While diagnosing the cause of high HC and O2...Ch. 33 - While discussing electric exhaust gas...
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- IC ENGINER 1. Why three way catalytic converters are employed in the modern day S.I engine driven vehicles? Showthe plot of pollutants versus air fuel ratio and conversion efficiency versus air fuel ratio for all the major pollutants from S.I engine.arrow_forwardCombustionarrow_forwardIncomplete combustion is permitted because a significant amount of heat is still generated. true of falsearrow_forward
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