Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 28, Problem 7RQ
Why is the sulfur content in gasoline limited?
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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?
1-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 TFC
which of the following is an indicator of combustion efficiency and not emission?
Chapter 28 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 28 - Pump gasoline may contain a small amount of...Ch. 28 - True or False? The diesel fuels antiknock quality...Ch. 28 - What percentage of ethanol does E85 contain?Ch. 28 - List five advantages the use of piezoelectric...Ch. 28 - What does the Reid vapor pressure (RVP) test...Ch. 28 - List three alternative fuels for an internal...Ch. 28 - Why is the sulfur content in gasoline limited?Ch. 28 - Prob. 8RQCh. 28 - What is particulate matter and when is it...Ch. 28 - What are oxygenates and why are they added to...
Ch. 28 - How does SCR lower the content in a diesels...Ch. 28 - True or False? Piezoelectric materials can emit a...Ch. 28 - Name three driveability factors that are affected...Ch. 28 - Which of the following statements about hydrogen...Ch. 28 - Which of the following chemicals is commonly added...Ch. 28 - Technician A says that the use of methanol in...Ch. 28 - Technician A says that reformulated gasoline...Ch. 28 - Technician A says that dedicated vehicles are...Ch. 28 - Technician A says white smoke in the exhaust of a...Ch. 28 - Technician A says piezo material is a type of...Ch. 28 - Prob. 6ASRQCh. 28 - While discussing chemicals that are currently...Ch. 28 - While discussing common rail fuel injection...Ch. 28 - Technician A says diesel engines consume less fuel...Ch. 28 - While discussing the reasons why the use of E85...
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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
- What are oxygenates and why are they added to refined gasoline?arrow_forwardWhich of the following chemicals is commonly added to gasoline to increase its octane rating? a. Isooctane b. Heptane c. Sulfur d. Ethanolarrow_forwardHow does a GDI system provide for a stratified charge in the combustion chamber?arrow_forward
- While discussing air-fuel ratios: Technician A says that a stoichiometric mixture is theoretically the best combination of fuel and air to provide for total combustion. Technician B says that a stoichiometric mixture always results in complete combustion. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhat percentage of ethanol does E85 contain?arrow_forwardAs an engines compression ratio increases, what should happen to the octane rating of the gasoline?arrow_forward
- What is the testing procedure for diesel systems as outlined by the national environment protection (diesel vehicle emissions) measure?arrow_forwardin most TBI systems the fuel pressure is maintained at ________ .arrow_forwardHow do the volumetric efficiency and air-fuel ratio change as the engine's rotational speed changes? With a brief explanation of the change process with an explanation of the reasonsarrow_forward
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