Internal Combustion Engines

May 4 • Engineering Sample Papers, Notes • 2277 Views • 2 Comments on Internal Combustion Engines

Internal Combustion Engines concept and working principal described with this page.The Question And Answers of Internal Combustion Engines also available for those who want to learn and practice with topic that will help to increase their knowledge.Before going to sample papers we will introduce the Internal Combustion Engines in short.

Internal Combustion Engines

Internal Combustion Engines is an engine in which the combustion of a fuel occurs with an oxidizer. Internal Combustion Engines operates by burning its fuel inside the engine.Internal Combustion Engines operates in combustion chamber that is an integral part of the working fluid flow circuit.

Internal-combustion engines are divided into two groups-combustion engines and intermittent-combustion engines.

Questions

Internal Combustion Engines

Q1: Give the detailed classification of heat engines?

Q2: What are Internal Combustion Engines? Differentiate between four strock and two strock intrenal combustion engines?

Q3: Explain the working cycles for internal combustion engines? marks)

Q4: Give a detailed description of spark ignition and compression ignition emgions?

Q5: Explain the following terms:

i) Detonation

ii) Pre ignition

iii) Compression ratio

iv) strock-to-bore ratio

Q6: Explain in detail the working principle of elementry carburattor with the help of a neat diagram?

Q7: What is the requirement of ignetion system? Describe different types of ignetion system?

Q8: Explain the properties of a lubricant? What is the need of lubrication? explain wet sump lubrication system?

Q9: What is the need of cooling system? Explain water cooling system with diagram?

Q10: What are the alternative fules for I.C engines? give the advantages and disadvantages of using alternative fules?

Q11: What is ignition lag (delay period) in internal combustion engines?marks)

Q12: An ideal otto cycle operating on air has compression ratio of 8. The temperature at the end of isentropic expansion is 450 C and at end of expansion is 1350 C. Using table determine cycle work and efficency?

Q13: What is the need of an injector? Explain its working?

Q14: What are different types of injection system?

Q15: What are the different parts of internal combustion engines? Explian parts common to both petrol and diesel engine?

Q16:(a) What are the different ways of controlling emission from intrenal combustion engines?

Q16 (b): Compare the diesel engines and petrol engines? what are the different types of working cycles used in diesel and petrol engines?

Q16(c): Explain sterling cycle and brayton cycle?

Q 1 When must the owner/operator begin monthly pressure drop measurements?

Ans The pressure drop across the catalyst must initially be measured during the initial performance test.Owners/operators must begin demonstrating continuous compliance with the monthly pressure drop measurements after the initial performance test is conducted. The deadlines for conducting the initial performance tests are provided in 40 CFR 63.6610, 63.6611, and 63.6612.

Q 2 Is the owner/operator of a facility responsible for ensuring that leased affected RICE are in compliance with subpart ZZZZ?

Ans Yes. The owner/operator of the facility is responsible for all affected RICE operating at his/her facility regardless of whether the units are owned or leased. The owner/operator should obtain from the leasing company all relevant information pertaining to the affected RICE to ensure that the affected RICE is operating in compliance with subpart ZZZZ.

Q 3 Is a temporary replacement stationary RICE subject to subpart ZZZZ?

Ans Yes. Subpart ZZZZ does not provide an exemption for temporary stationary RICE

Q 4 When must the owner/operator begin monthly pressure drop measurements?

Ans The pressure drop across the catalyst must initially be measured during the initial performance test. Owners/operators must begin demonstrating continuous compliance with the monthly pressure drop measurements after the initial performance test is conducted. The deadlines for conducting the initial performance tests are provided in 40 CFR 63.6610, 63.6611, and 63.6612..

Q 5 How should an owner/operator conduct monthly pressure drop monitoring if a RICE does not

operate during a calendar month?

Ans If a RICE does not operate during a given calendar month, the owner/operator does not have to start up the RICE solely for the purpose of recording pressure drop. The owner/operator should record the pressure drop immediately upon the next startup of the RICE. The compliance report required in 40 CFR 63.6650 should identify the operational status of the RICE to substantiate the basis of any calendar month for which the pressure drop was not measured.

Q 6 How long after the catalyst change does the owner/operator have to conduct a performance test?

Ans Subpart ZZZZ does not provide a deadline for conducting a performance test following a catalyst change. However, the owner/operator should schedule a performance test as soon as possible following the catalyst change to demonstrate that the RICE is still in compliance with the standard. If the RICE fails the performance test after a catalyst change, the RICE will be considered to be out of compliance from the time the catalyst change was made. Owners/operators conducting performance tests following a catalyst change are required to notify the EPA Regional Office or delegated agency 60 days prior to conducting the test. 40 CFR 63.9(e). An owner/operator may seek an adjustment to the 60 day notification requirement from the EPA Regional Office or the delegated agency if they wish to conduct a performance test as soon as possible following the catalyst change.