Podcast
Questions and Answers
Describe the function of a main engine turbocharger.
Describe the function of a main engine turbocharger.
To increase engine power output by compressing the air before it enters the engine cylinders, allowing more fuel to be burned and increasing efficiency.
What is meant by the term pulse system in large medium speed diesel engine turbochargers?
What is meant by the term pulse system in large medium speed diesel engine turbochargers?
The term pulse system refers to a turbocharging system where exhaust gas flows in pulsating form into the turbine, with each gas pulse fed to a corresponding nozzle ring segment of the expansion turbine.
What advantage does the pulse system have over the constant pressure system in turbochargers?
What advantage does the pulse system have over the constant pressure system in turbochargers?
The pulse system allows for efficient scavenging of the engine cylinders by overlapping the opening times of inlet and exhaust valves after the pulse decay, resulting in better performance compared to the constant pressure system.
What are the advantages of pressure charging by means of an exhaust gas turbocharger system?
What are the advantages of pressure charging by means of an exhaust gas turbocharger system?
How does a turbocharger work in relation to the engine exhaust gases?
How does a turbocharger work in relation to the engine exhaust gases?
Explain the effects of undercooling the charge air on the engine.
Explain the effects of undercooling the charge air on the engine.
Explain why the charge air cooler has fins attached to its tubes.
Explain why the charge air cooler has fins attached to its tubes.
What is the purpose of zinc anodes in air coolers?
What is the purpose of zinc anodes in air coolers?
What is the purpose of vent cocks in air coolers?
What is the purpose of vent cocks in air coolers?
What is the purpose of tube fins in air coolers?
What is the purpose of tube fins in air coolers?
How does fouling of air passages affect engine performance?
How does fouling of air passages affect engine performance?
Explain the significance of the air seal in an intercooler construction.
Explain the significance of the air seal in an intercooler construction.
What is the role of cast iron water boxes in an intercooler construction?
What is the role of cast iron water boxes in an intercooler construction?
What is the main reason for surging in a turbocharger?
What is the main reason for surging in a turbocharger?
Where does the surging vibration emanate from in a turbocharger?
Where does the surging vibration emanate from in a turbocharger?
What happens if the pressure in the scavenge manifold is equal to or higher than the discharge pressure of the compressor?
What happens if the pressure in the scavenge manifold is equal to or higher than the discharge pressure of the compressor?
What does the back flow of air in a turbocharger cause?
What does the back flow of air in a turbocharger cause?
What analogy is used to describe the situation when air flows back through the rotating impeller in a turbocharger?
What analogy is used to describe the situation when air flows back through the rotating impeller in a turbocharger?
Explain why surging in a turbocharger can produce various noises like coughing and barking.
Explain why surging in a turbocharger can produce various noises like coughing and barking.
What is the impact of surging on the efficiency of a turbocharger?
What is the impact of surging on the efficiency of a turbocharger?
How does surging in a turbocharger affect power output?
How does surging in a turbocharger affect power output?
What happens if the Air Mass flow drops due to issues like dirty filters or blocked coolers?
What happens if the Air Mass flow drops due to issues like dirty filters or blocked coolers?
What will happen if the Air Mass Flow continues to drop beyond a certain point?
What will happen if the Air Mass Flow continues to drop beyond a certain point?
What will cause the Turbocharger to Surge?
What will cause the Turbocharger to Surge?
What action will cause the Turbocharger to Surge?
What action will cause the Turbocharger to Surge?
What is the significance of marking the spot for each speed in turbocharger operation?
What is the significance of marking the spot for each speed in turbocharger operation?
How is the Pressure Ratio affected when the Air Mass flow drops?
How is the Pressure Ratio affected when the Air Mass flow drops?
What happens if the Air Mass flow continues to drop?
What happens if the Air Mass flow continues to drop?
What is the consequence of the Pressure Ratio suddenly dropping over the edge of the graph?
What is the consequence of the Pressure Ratio suddenly dropping over the edge of the graph?
Explain the importance of keeping the turbocharger intake filter clean.
Explain the importance of keeping the turbocharger intake filter clean.
Why is water-washing the turbine and compressor side of the turbocharger necessary?
Why is water-washing the turbine and compressor side of the turbocharger necessary?
What is the function of a main engine turbocharger?
What is the function of a main engine turbocharger?
Explain why a thrust bearing is needed in large medium speed diesel engine turbochargers.
Explain why a thrust bearing is needed in large medium speed diesel engine turbochargers.
What are four possible causes of poor turbocharger performance?
What are four possible causes of poor turbocharger performance?
What is meant by the term 'pulse system' in large medium speed diesel engine turbochargers?
What is meant by the term 'pulse system' in large medium speed diesel engine turbochargers?
Explain the advantage the pulse system has over the constant pressure system.
Explain the advantage the pulse system has over the constant pressure system.
Why is it important to assess cylinder and power distribution of individual units on a regular basis?
Why is it important to assess cylinder and power distribution of individual units on a regular basis?
Describe how the turbocharger is lubricated.
Describe how the turbocharger is lubricated.
Explain the potential causes of abnormal turbocharger vibration when operating at a steady speed.
Explain the potential causes of abnormal turbocharger vibration when operating at a steady speed.
Describe how the causes of abnormal turbocharger vibration can be minimized.
Describe how the causes of abnormal turbocharger vibration can be minimized.
What is the impact of surging on the efficiency of a turbocharger?
What is the impact of surging on the efficiency of a turbocharger?
Explain the role of a thrust bearing in large medium speed diesel engine turbochargers.
Explain the role of a thrust bearing in large medium speed diesel engine turbochargers.
What analogy is commonly used to describe the situation when air flows back through the rotating impeller in a turbocharger?
What analogy is commonly used to describe the situation when air flows back through the rotating impeller in a turbocharger?
