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Generally, in Bosch type fuel injection pumps, the quantity of fuel is increased or decreased with change in load, due to change in  
  • a)
    Timing of start of fuel injection.
  • b)
    Timing of end of fuel injection
  • c)
    Injection pressure of fuel
  • d)
    velocity of flow of fuel
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Generally, in Bosch type fuel injection pumps, the quantity of fuel is...
Ans. (b) The quantity of fuel is varied by rotating helix on pump plunger, i.e. timing the end of fuel injection.
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Generally, in Bosch type fuel injection pumps, the quantity of fuel is...
Timing of end of fuel injection

In Bosch type fuel injection pumps, the quantity of fuel is adjusted with changes in load by manipulating the timing of the end of fuel injection.

Understanding Bosch type fuel injection pumps

Bosch type fuel injection pumps are widely used in diesel engines to deliver the precise amount of fuel at the right time for efficient combustion. These pumps work by pressurizing the fuel and then injecting it into the combustion chamber at high pressure. The timing of the fuel injection plays a crucial role in achieving optimum engine performance.

Load and fuel quantity

The load on an engine refers to the amount of work it is required to perform. As the load increases, such as when the engine is under heavy load or operating at high speeds, more fuel is required to maintain the power output. Conversely, when the load decreases, less fuel is needed.

Effect of timing on fuel quantity

The timing of the end of fuel injection directly affects the quantity of fuel delivered to the combustion chamber. When the load on the engine increases, the timing of the end of fuel injection is adjusted to a later point in the engine cycle. This means that the fuel injection process continues for a longer duration, allowing more fuel to be injected into the combustion chamber.

On the other hand, when the load decreases, the timing of the end of fuel injection is advanced, resulting in a shorter injection duration. This reduces the amount of fuel injected into the combustion chamber, matching the reduced demand for power.

Importance of precise timing

The precise timing of the end of fuel injection is crucial to ensure efficient combustion and optimal engine performance. If the timing is incorrect, it can lead to various issues such as incomplete combustion, excessive fuel consumption, increased emissions, and reduced power output.

Conclusion

In Bosch type fuel injection pumps, the quantity of fuel is adjusted with changes in load by manipulating the timing of the end of fuel injection. This allows for precise control over the fuel delivery, ensuring optimal engine performance under varying operating conditions.
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Generally, in Bosch type fuel injection pumps, the quantity of fuel is increased or decreased with change in load, due to change ina)Timing of start of fuel injection.b)Timing of end of fuel injectionc)Injection pressure of fueld)velocity of flow of fuelCorrect answer is option 'B'. Can you explain this answer?
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Generally, in Bosch type fuel injection pumps, the quantity of fuel is increased or decreased with change in load, due to change ina)Timing of start of fuel injection.b)Timing of end of fuel injectionc)Injection pressure of fueld)velocity of flow of fuelCorrect answer is option 'B'. 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 Generally, in Bosch type fuel injection pumps, the quantity of fuel is increased or decreased with change in load, due to change ina)Timing of start of fuel injection.b)Timing of end of fuel injectionc)Injection pressure of fueld)velocity of flow of fuelCorrect answer is option 'B'. 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 Generally, in Bosch type fuel injection pumps, the quantity of fuel is increased or decreased with change in load, due to change ina)Timing of start of fuel injection.b)Timing of end of fuel injectionc)Injection pressure of fueld)velocity of flow of fuelCorrect answer is option 'B'. Can you explain this answer?.
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