Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 34, Problem 4MC
As a catalytic converter begins to deteriorate, the signal from the postcatalyst HO2S becomes
the signal of the precatalyst HO2 S.
a. shorter than
b. more like
c. larger than
d. flatter than
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2. Chamber mounted in exhaust flow containing material that promotes reduction of emissions by
chemical reaction.
a. Muffler
b. Exhaust Filter
c. Catalytic Converter d. Emission Filter
The uncontrolled NOx exhaust emission rate on a new U.S. passenger car is about 3.0 gfarile. The conversion efficiency of a catalytic converter to meet an emission standard of 0.4 g/mile is most nearly:a. 87%b. 90%c. 98%d. 99%
Chapter 34 Solutions
Automotive Technology
Ch. 34 - A rich air-fuel ratio causes HC emissions to...Ch. 34 - What will result from too little EGR flow? And...Ch. 34 - What can result from a charcoal canister that is...Ch. 34 - What happens if a PCV valve is stuck in the open...Ch. 34 - Explain why the I/M 240 and similar tests are...Ch. 34 - How do you test the efficiency of a secondary AIR...Ch. 34 - List five common causes for high HC emissions.Ch. 34 - Describe carbon monoxide (CO) emissions in...Ch. 34 - An EGR valve that does not fully close can cause...Ch. 34 - A restricted catalytic converter can cause all of...
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 1. Use the internet and other reference materials to learn about the internal combustion engines valve system. 2. Illustrate and identify the different components of the ICES valve system. 3. Discuss the function of each component of the valve system of the ICE. 4. Explain the operation of the ICES valve system. 5. Discuss the importance of the valve system in an internal combustion engines.arrow_forwardA chamber installed in the exhaust flow that contains material that aids emission reduction via chemical reaction. a. muffler b. exhaust filter c. catalytic converter d. emission filterarrow_forwardA vehicle is having its water pump replaced. When the water pump is removed, severe corrosion is found on the water pump impeller, and inside the engine. Technician A states that the radiator cap may be overpressurizing the system. Technician B states that the vehicle may have been run with 100% water in the cooling system for some time. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forward
- After choosing the answer, please explain why is that the answer. Thank you!arrow_forwardWhile discussing the MIL on OBD II systems: Technician A says that the MIL will flash if the PCM detects a fault that would damage the catalytic converter. Technician B says that whenever the PCM has detected a fault, it will turn on the MIL. Who is correct? a. Technician A • Technician B • Both A and B • Neither A nor Barrow_forward3 Ways to extract diesel from a mixture and its step by step processarrow_forward
- Hello please do both these parts its easy I have 4 I'ds pls do it carefully with proper explanation I want botharrow_forwardTechnician A says that during oxidation, as NOx gases pass over the catalyst, the N atoms are pulled from the NOx molecules and are absorbed by the catalyst. The released oxygen atoms then flow through the converter to the second bed. The result of NOx oxidation is pure nitrogen plus oxygen or carbon dioxide. Technician B says that during the reduction phase inside the converter, hydrocarbon and carbon monoxide molecules experience a second combustion. The result of this combustion or oxidation process is water vapor and carbon dioxide. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardinternal combustion engine help pleasearrow_forward
- 5)arrow_forwardWhich of the following statements about carbondioxide is not true?a. CO2 levels are highest when the air-fuel ratiois slightly leaner than stoichiometric.b. The production of CO2 is directly related tothe amount of fuel consumed; therefore,more fuel-efficient engines produce less CO2c. To reduce CO2 levels in the exhaust, engineers are working hard to decrease fuel consumption to keep CO2low.d. The concern for CO2 emissions is one of theprimary reasons for the delayed use of alternative fuels for automobiles.arrow_forwardInternal combustion enginesarrow_forward
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