AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
7th Edition
ISBN: 9781337792158
Author: ERJAVEC
Publisher: CENGAGE L
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Textbook Question
Chapter 33, Problem 1MC
Which of the following systems is designed to reduce NOx and has little or no effect on overall engine performance?
a. PCV
b. EGR
c. AIR
d. EVAP
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Chapter 33 Solutions
AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
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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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
- Why is a PCV system critical to an engines durability?arrow_forwardWhich of the following are complexities that are ignored when assuming air-standard for an internal-combustion engine? Select all that apply. Variation of specific heat values with a change in temperature Changes in pressure during the power stroke (expansion) Changes in chemical composition due to combustion O Heat transfer through the piston or cylinder wallsarrow_forwardCOMPOSE A MATRIX TABLE OF ENGINE EMISSIONS AND THEIR HARMFUL EFFECTS ON HUMANS AND THE ENVIRONMENTarrow_forward
- While discussing the compression ratios used with engines equipped with a GDI system: Technician A says that higher ratios can be used because ignition timing is normally very advanced. Technician B says that higher ratios are possible because the small droplets of fuel injected directly into the cylinder tend to cool the mixture in the cylinder. Who is correct?a.tech a b.tech b c. Both a and b d. Neither a nor barrow_forwardA restricted exhaust system can cause______. a. stalling b. loss of power c. backfiring d. all of the abovearrow_forwardWhich of the following statements about EVAP systems is not true? a. If the system is purging vapors from the charcoal canister when the engine is running at high speeds, rough engine operation will occur. b. Cracked hoses or a canister saturated with gasoline may allow gasoline vapors to escape to the atmosphere, resulting in gasoline odor in and around the vehicle. c. Rough idle, flooding, and other similar conditions can indicate a saturated canister. d. A vacuum leak in the system can cause starting and performance problems.arrow_forward
- True or False? SAE mandates that engine, when viewed from the front, will be rotating in a counterclockwise direction.arrow_forwardChoose the correct statement. Select one: a. A dry sump system stores oil in a tank outside of the engine. b. A wet sump system uses a scavenge pump and pressure pump. C. The wet sump system is the best fit during aggressive driving conditions. d. The dry sump system is the best fit in low performance applications.arrow_forwardCarbon deposits on the intake valve or seat may cause the valve not to close properly. Tech a says that the flywheel will be harder to spin when starting the engine. Tech b says that the engine will loose power. Who is correct?arrow_forward
- Q/ What is specific fuel consumption of an engine?arrow_forwardThe gas/oil mixture used in a two stroke engine has been properly mixed. The carburetor high speed & cruise circuit is adjusted to lean. Tech a says that the lean adjustment may cause the engine to fail due to improper lubrication: tech b says that it may cause the engine to fail because of overheating. Who is correct?arrow_forwardThe function of carburettor used in engine is to a. mix air, petrol and diesel in engines b. mix petrol and diesel in engines c. mix air and diesel in engines d. mix air and petrol in enginesarrow_forward
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