Mechanical Engineering Exam > Mechanical Engineering Questions > In S.I. engines supercharging will.a)increase...
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In S.I. engines supercharging will.
- a)increase Detonation
- b)No effect on detonation
- c)Decrease Detonation
- d)Cannot be predicted
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
In S.I. engines supercharging will.a)increase Detonationb)No effect on...
Understanding Supercharging in S.I. Engines
Supercharging is a method used to increase the power output of Spark Ignition (S.I.) engines by forcing more air into the combustion chamber. While it enhances performance, it can also lead to increased detonation.
What is Detonation?
- Detonation, often referred to as 'knocking', occurs when the air-fuel mixture ignites prematurely in the combustion chamber.
- This premature ignition can cause shock waves that lead to engine damage, decreased efficiency, and rough operation.
Effects of Supercharging on Detonation
- Increased Air Density: Supercharging increases the density of the air entering the engine. This allows for a greater amount of fuel to be burned.
- Higher Combustion Temperatures: The increase in air and fuel can lead to higher combustion temperatures, which significantly contributes to detonation.
- Increased Pressure: Supercharging raises the pressure within the combustion chamber, making it easier for the air-fuel mixture to ignite spontaneously.
- Higher Cylinder Pressure: The combination of increased temperature and pressure can bring the engine closer to the knock threshold, thus increasing the likelihood of detonation.
Conclusion
In summary, supercharging in S.I. engines increases detonation risk due to elevated air density, combustion temperatures, and pressures. Therefore, careful tuning and the use of high-octane fuels are essential to mitigate these effects and maintain engine reliability while harnessing the benefits of supercharging.
Supercharging is a method used to increase the power output of Spark Ignition (S.I.) engines by forcing more air into the combustion chamber. While it enhances performance, it can also lead to increased detonation.
What is Detonation?
- Detonation, often referred to as 'knocking', occurs when the air-fuel mixture ignites prematurely in the combustion chamber.
- This premature ignition can cause shock waves that lead to engine damage, decreased efficiency, and rough operation.
Effects of Supercharging on Detonation
- Increased Air Density: Supercharging increases the density of the air entering the engine. This allows for a greater amount of fuel to be burned.
- Higher Combustion Temperatures: The increase in air and fuel can lead to higher combustion temperatures, which significantly contributes to detonation.
- Increased Pressure: Supercharging raises the pressure within the combustion chamber, making it easier for the air-fuel mixture to ignite spontaneously.
- Higher Cylinder Pressure: The combination of increased temperature and pressure can bring the engine closer to the knock threshold, thus increasing the likelihood of detonation.
Conclusion
In summary, supercharging in S.I. engines increases detonation risk due to elevated air density, combustion temperatures, and pressures. Therefore, careful tuning and the use of high-octane fuels are essential to mitigate these effects and maintain engine reliability while harnessing the benefits of supercharging.
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In S.I. engines supercharging will.a)increase Detonationb)No effect on...
Superchargung preferred in si engine because it leads to decrease delay period(time between fuel injection and combustion ) ,therefore decrease detonation where as in si engine it incresescompression ratio ,increase denotion.
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In S.I. engines supercharging will.a)increase Detonationb)No effect on detonationc)Decrease Detonationd)Cannot be predictedCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about In S.I. engines supercharging will.a)increase Detonationb)No effect on detonationc)Decrease Detonationd)Cannot be predictedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In S.I. engines supercharging will.a)increase Detonationb)No effect on detonationc)Decrease Detonationd)Cannot be predictedCorrect answer is option 'A'. Can you explain this answer?.
In S.I. engines supercharging will.a)increase Detonationb)No effect on detonationc)Decrease Detonationd)Cannot be predictedCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about In S.I. engines supercharging will.a)increase Detonationb)No effect on detonationc)Decrease Detonationd)Cannot be predictedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In S.I. engines supercharging will.a)increase Detonationb)No effect on detonationc)Decrease Detonationd)Cannot be predictedCorrect answer is option 'A'. Can you explain this answer?.
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