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 33, Problem 8RQ
HC emissions may come from the tailpipe or sources.
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an engine is being discussed for lean running condition. technician A checks for air leak in the intake. Technician B checks for alcohol in the fuel. who is correct?
Chapter 33 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
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 - Which of the following systems is designed to...Ch. 33 - What is a catalyst?Ch. 33 - Rather then rely on the AIR system for extra...Ch. 33 - Which of the following statements about carbon...Ch. 33 - Why do the EGR systems on many late-model diesel...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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- Technician A says that only offshore engines are permitted to use port-helix metering fuel systems on EPA MY 2010 compliant and later engines. Technician B says that port-helix metering injection pumps can be used on current diesel engines when the peak power rating is less than 70 BHP (52 kW). Who is correct?arrow_forwardDiesel engine fuel is rated by?arrow_forwardHow does SCR lower the content in a diesels exhaust?arrow_forward
- Which emission control system introduces exhaust gases into the intake air to reduce the formation of NOXin the combustion chamber? EVAP EGR Air injection PCVarrow_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_forwardWrite down the methods of reducing NOx emissions in a combustion system.arrow_forward
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