assign5 - gasoline engine Which of the 40 elements are...

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ME444 Assignment 5 Due: October 18, 2011 1. Construct a diagram showing the important elements of the fuel, air and combustion control system in a modern SI internal combustion engine. 2. What are the factors that influence the atomization process for fuel injection in an internal combustion engine. Contrast and compare port and direct fuel injection for gasoline SI engines. 3. What is the Sauter mean diameter and why is it used to quantify fuel sprays. Give an example.
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4. Describe some of important elements of a common rail diesel fuel injection system. How does the common rail system differ from other types of diesel injectors? Give an example of both. 5. Slide 25 of the fuel injection lecture shows the powertrain system for a PFI
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Unformatted text preview: gasoline engine. Which of the 40 elements are electronically monitored or controlled by the powertrain control module? 6. List the major components of a GDI System. What are the advantages of the GDI system over the PFI system? What are the disadvantages? 7. Describe and show five major classifications of valve actuation systems. 8. Why is variable cam phasing important? Specifically, explain how variable cam phasing can influence airflow in an engine. 9. Give an example in words and careful drawings of how variable cam phasing works. 10. What is cylinder deactivation? What can it accomplish? 11. Describe the most stressed element in a valve train system. 12. Why would one want to use a variable valve lift system?...
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assign5 - gasoline engine Which of the 40 elements are...

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