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Consider the following statements:
The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to
1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.
2. Inject fuel at high velocity to facilitate atomization.
3. Ensure that penetration is not high.
Of the above statements
The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to
1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.
2. Inject fuel at high velocity to facilitate atomization.
3. Ensure that penetration is not high.
Of the above statements
- a)1 and 2
- b)1 and 3
- c)2 and 3
- d)1, 2 and
Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements:The injector nozzle of a CI engine i...
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Consider the following statements:The injector nozzle of a CI engine i...
Statement 1: The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to be able to inject fuel in a chamber of high pressure at the end of the compression stroke.
The first statement is correct. In a Compression Ignition (CI) engine, the fuel is injected into the combustion chamber at the end of the compression stroke. At this point, the air-fuel mixture is highly compressed and under high pressure. In order for the fuel to penetrate the compressed air and mix properly, it needs to be injected at a sufficiently high pressure. This ensures that the fuel is able to overcome the high pressure in the combustion chamber and properly mix with the air.
Statement 2: The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to inject fuel at high velocity to facilitate atomization.
The second statement is also correct. In order for the fuel to mix effectively with the air in the combustion chamber and promote efficient combustion, it needs to be atomized into small droplets. This increases the surface area of the fuel, allowing for better mixing with the air. Injecting the fuel at a high velocity helps to break it up into smaller droplets, improving atomization. Therefore, injecting fuel at a sufficiently high pressure is necessary to achieve the desired high velocity and facilitate atomization.
Statement 3: The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to ensure that penetration is not high.
The third statement is incorrect. In a CI engine, fuel penetration refers to the distance that the fuel travels from the injector nozzle into the combustion chamber. A certain level of fuel penetration is desirable as it ensures that the fuel is properly mixed with the air. If the fuel penetration is too low, it may not mix properly with the air, leading to incomplete combustion. On the other hand, if the fuel penetration is too high, it may result in fuel impingement on the cylinder walls, causing increased heat losses and inefficient combustion. Therefore, the injector nozzle of a CI engine should be designed in such a way that it provides an optimal fuel penetration, rather than ensuring that penetration is not high.
Conclusion:
Based on the analysis of the statements, the correct answer is option 'A' - 1 and 2. The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to be able to inject fuel in a chamber of high pressure at the end of the compression stroke, and to inject fuel at high velocity to facilitate atomization.
The first statement is correct. In a Compression Ignition (CI) engine, the fuel is injected into the combustion chamber at the end of the compression stroke. At this point, the air-fuel mixture is highly compressed and under high pressure. In order for the fuel to penetrate the compressed air and mix properly, it needs to be injected at a sufficiently high pressure. This ensures that the fuel is able to overcome the high pressure in the combustion chamber and properly mix with the air.
Statement 2: The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to inject fuel at high velocity to facilitate atomization.
The second statement is also correct. In order for the fuel to mix effectively with the air in the combustion chamber and promote efficient combustion, it needs to be atomized into small droplets. This increases the surface area of the fuel, allowing for better mixing with the air. Injecting the fuel at a high velocity helps to break it up into smaller droplets, improving atomization. Therefore, injecting fuel at a sufficiently high pressure is necessary to achieve the desired high velocity and facilitate atomization.
Statement 3: The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to ensure that penetration is not high.
The third statement is incorrect. In a CI engine, fuel penetration refers to the distance that the fuel travels from the injector nozzle into the combustion chamber. A certain level of fuel penetration is desirable as it ensures that the fuel is properly mixed with the air. If the fuel penetration is too low, it may not mix properly with the air, leading to incomplete combustion. On the other hand, if the fuel penetration is too high, it may result in fuel impingement on the cylinder walls, causing increased heat losses and inefficient combustion. Therefore, the injector nozzle of a CI engine should be designed in such a way that it provides an optimal fuel penetration, rather than ensuring that penetration is not high.
Conclusion:
Based on the analysis of the statements, the correct answer is option 'A' - 1 and 2. The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to be able to inject fuel in a chamber of high pressure at the end of the compression stroke, and to inject fuel at high velocity to facilitate atomization.
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Consider the following statements:The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.2. Inject fuel at high velocity to facilitate atomization.3. Ensure that penetration is not high.Of the above statementsa)1 and 2b)1 and 3c)2 and 3d)1, 2 andCorrect answer is option 'A'. Can you explain this answer?
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Consider the following statements:The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.2. Inject fuel at high velocity to facilitate atomization.3. Ensure that penetration is not high.Of the above statementsa)1 and 2b)1 and 3c)2 and 3d)1, 2 andCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following statements:The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.2. Inject fuel at high velocity to facilitate atomization.3. Ensure that penetration is not high.Of the above statementsa)1 and 2b)1 and 3c)2 and 3d)1, 2 andCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.2. Inject fuel at high velocity to facilitate atomization.3. Ensure that penetration is not high.Of the above statementsa)1 and 2b)1 and 3c)2 and 3d)1, 2 andCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following statements:The injector nozzle of a CI engine is required to inject fuel at a sufficiently high pressure in order to1. be able to inject fuel in a chamber of high pressure at the end of the compression stroke.2. Inject fuel at high velocity to facilitate atomization.3. Ensure that penetration is not high.Of the above statementsa)1 and 2b)1 and 3c)2 and 3d)1, 2 andCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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