Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
6th Edition
ISBN: 9780135257272
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 9CQ
The use of diesel exhaust fluid (DEF) in a vehicle equipped with a diesel engine is used to reduce ____________ emissions.
- a. NOx
- b. HC
- c. CO
- d. All of the above
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Students have asked these similar questions
1) 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 lean
1 Before conducting a __________ test, disable the ignition and the __________ injection system. Most manufacturers recommend that the engine be __________ when testing.
a) Discuss in detail any 4 locations within the diesel engine cylinder where unburnt
HC emissions form.
Chapter 17 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 17 - Why should brake fluid not be filled above the...Ch. 17 - Why should brake fluid be kept in an airtight...Ch. 17 - How do you check differential fluid?Ch. 17 - What are four lubricants that a manual...Ch. 17 - How often does diesel exhaust fluid (DEF) need to...Ch. 17 - Prob. 1CQCh. 17 - When should the engine oil be replaced? a....Ch. 17 - Prob. 3CQCh. 17 - Routine service includes ____________. a. checking...Ch. 17 - Which of these conditions must be met before...
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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
- Technician A says diesel engines consume less fuel per mile than a gasoline engine of the same size. Technician B says diesel engines provide more torque than a gasoline engine of the same size. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhat is the definition of actual air-fuel ratio?arrow_forwardTechnician 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_forward
- True or False? Engine misfires can cause a catalytic converter to overheat.arrow_forwardTrue or False? The diesel fuel’s antiknock quality ismeasured by the cetane ratingarrow_forward1-What is specific fuel consumption of an engine? 2-Why does BSFC decrease with load? 3-What happens when petrol is used in diesel engine? Which engine is more efficient? 4-Which engine produces the most torque (diesel or petrol)? Differentiate SFC and TFCarrow_forward
- technician A says lean ratio of 15:1 to 16:1 provide the best fuel economy. technician B says rich mixture have a ratio below 14.7:1 and provide more power from the engine but greater fuel combustion. who is correct?arrow_forwardWhat is the testing procedure for diesel systems as outlined by the national environment protection (diesel vehicle emissions) measure?arrow_forwardExplain steps involved in disconnecting a fuel line on a vehicle with multiport fuel injaction and gasoline direct injection ?arrow_forward
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