Why Do We Need a Torque Converter for Diesel Engines to Start Gas Turbines?

In summary, the torque converter serves as a fluid coupling that allows for the transfer of torque from the diesel engine to the gas turbine, eliminating the need for a direct mechanical connection. It works by creating a fluid flow that spins a turbine inside the converter, which then rotates the impeller connected to the gas turbine. This is necessary because a direct connection would be difficult and time-consuming, and can also be started without a torque converter using an external starter motor. Using a torque converter may introduce a small amount of energy loss and can cause problems if not properly maintained, but the benefits typically outweigh these disadvantages.
  • #1
mectarek
5
0
why do we need to add a torque converter to diesel engines used to start gas turbines knowing that the diesel engine has a higher torque than a pneumatic starter?

and if we want to change the starting system from a diesel engine to a pneumatic starter, what are the components that need to be added or removed from the starting system?
 
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  • #2
To protect the mechanism from shock loading.
 

1. What is the purpose of a torque converter in starting gas turbines for diesel engines?

The torque converter serves as a fluid coupling that allows for the transfer of torque from the diesel engine to the gas turbine. This allows the gas turbine to start and reach its operating speed without the need for a direct mechanical connection between the two engines.

2. How does a torque converter work in starting a gas turbine?

When the diesel engine is started, it creates a flow of fluid within the torque converter. This fluid flow causes a turbine inside the converter to spin, which then rotates the impeller connected to the gas turbine. This rotation allows the gas turbine to start and continue functioning independently.

3. Why is a torque converter necessary for starting gas turbines with diesel engines?

Without a torque converter, a direct mechanical connection would be needed between the diesel engine and the gas turbine. This would require precise alignment and coupling, which can be difficult and time-consuming. The torque converter eliminates the need for this direct connection and allows for a smoother and more efficient start-up process.

4. Can a gas turbine be started without a torque converter?

Yes, in some cases a gas turbine can be started without a torque converter by using an external starter motor. However, this method may not be as efficient and can also be more costly and complex to implement.

5. Are there any disadvantages to using a torque converter for starting gas turbines?

One potential disadvantage is that the torque converter can introduce a small amount of energy loss during the start-up process. Additionally, if the torque converter is not properly maintained, it can cause problems with the start-up of the gas turbine. However, these disadvantages are typically outweighed by the benefits of using a torque converter for starting gas turbines with diesel engines.

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