Podcast
Questions and Answers
What is the role of the reference tube in the crankcase oil mist detector?
What is the role of the reference tube in the crankcase oil mist detector?
- To provide electrical current to sensors
- To measure the oil mist level directly
- To contain clean air for comparison (correct)
- To extract crankcase vapors
What does the photo-electric cell in the crankcase oil mist detector do?
What does the photo-electric cell in the crankcase oil mist detector do?
- Generates heat to evaporate the oil mist
- Measures the temperature of the crankcase
- Creates an electric current based on light power (correct)
- Circulates air in the crankcase
Which component of the crankcase oil mist detector is responsible for drawing crankcase vapors?
Which component of the crankcase oil mist detector is responsible for drawing crankcase vapors?
- Mirror
- Selector
- Fan (correct)
- Measuring tube
What is the purpose of the selector in the crankcase oil mist detector?
What is the purpose of the selector in the crankcase oil mist detector?
What happens when the oil mist level exceeds the normal threshold in a crankcase oil mist detector?
What happens when the oil mist level exceeds the normal threshold in a crankcase oil mist detector?
Which part is NOT part of the crankcase oil mist detector?
Which part is NOT part of the crankcase oil mist detector?
What do the mirror, lamp, and lenses achieve in the crankcase oil mist detector?
What do the mirror, lamp, and lenses achieve in the crankcase oil mist detector?
Which of the following statements best describes how the oil mist is detected?
Which of the following statements best describes how the oil mist is detected?
Which method is NOT used to start a diesel engine?
Which method is NOT used to start a diesel engine?
What is the primary function of the starting air system in a medium speed diesel engine?
What is the primary function of the starting air system in a medium speed diesel engine?
Which component is essential for the operation of the crankcase oil mist detector?
Which component is essential for the operation of the crankcase oil mist detector?
In starting air systems, which type of diesel engine is the 2-stroke system primarily designed for?
In starting air systems, which type of diesel engine is the 2-stroke system primarily designed for?
What does the auxiliary diesel engine starting system primarily utilize for operation?
What does the auxiliary diesel engine starting system primarily utilize for operation?
Which of the following best describes the crankcase oil mist detector's purpose?
Which of the following best describes the crankcase oil mist detector's purpose?
What is the typical application of the electric starter motor for diesel engines?
What is the typical application of the electric starter motor for diesel engines?
In tasks regarding diesel engine operation, what is typically included in diagrams for educational purposes?
In tasks regarding diesel engine operation, what is typically included in diagrams for educational purposes?
Flashcards
Crankcase Oil Mist Detector
Crankcase Oil Mist Detector
A device used in marine diesel engines to detect the level of oil mist in the crankcase, and alarm when it exceeds a safe level.
Reference Tube
Reference Tube
A sealed tube containing clean air, used as a control in the oil mist detector.
Measuring Tube
Measuring Tube
A tube that passes crankcase vapor/samples; measures the oil mist level.
Photo-electric Cells
Photo-electric Cells
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Fan
Fan
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Selector
Selector
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Mirror, Lamp and Lenses
Mirror, Lamp and Lenses
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Lubricating Oil Splashing
Lubricating Oil Splashing
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Diesel Engine Starting Methods
Diesel Engine Starting Methods
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Auxiliary Diesel Engine Starting System
Auxiliary Diesel Engine Starting System
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Main Diesel Engine Starting System
Main Diesel Engine Starting System
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2-Stroke Engine Starting Air System
2-Stroke Engine Starting Air System
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4-Stroke Engine Starting Air System
4-Stroke Engine Starting Air System
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Starting Air Motor
Starting Air Motor
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Electric Starter Motor
Electric Starter Motor
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Oil Mist Detector
Oil Mist Detector
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Study Notes
Marine Power Plant (DMARPOWER)
- Course: Semester 1, 2023-2024
- Instructor: Chief Eng. Hamid Reza Soltani
- Institution: International Maritime College Oman
Lesson 11 and 12: Marine Power Plant (Deck Officer) - Diesel Engine Operating Systems (Part 3 and 4)
- Focus on the diesel engine operation and systems
- Covers diesel engine components and how they work together
- Learning objectives include understanding crankcase oil mist detector functions, and auxiliary diesel engine starting systems (using diagrams), including various starting systems
Crankcase Oil Mist Detector (Task 9)
- Function: Detects oil mist in the crankcase
- Operation: Engine lubrication oil splashes around the crankshaft, creating mist within the crankcase.
- The mist is not ignitable.
- The detector measures oil mist levels. Warnings are triggered when these levels exceed normal values.
Diesel Engine Starting System
- Explained as various methods
- Methods include:
- Manual handle or pulling wire
- Electric starter motor and battery (same as emergency generator and lifeboat engine)
- Starting air motor (same as diesel generator)
- Staring air system (same as main engine)
Auxiliary Diesel Engine Starting System (4-Stroke) (Task 10)
- Used to start medium-speed diesel engines
- The system is a starting air system, same as diesel generators onboard
- Diagrams show the system process for auxiliary diesel engine starting
- Discussion of component functions and the engine starting process is required
Main Diesel Engine Starting System (2-Stroke) (Task 11)
- Explains the cross-head 2-stroke diesel engine starting air system
- Similar to the main engines onboard the vessel
- Diagram shows the air system and its components and how they relate to engine starting
- Full system operation, function of components, and discussion of engine starting process are expected
References
- Wharton, A.J. (1995). Diesel Engines (3rd ed.). Oxford: Butterworth Heinemann.
- Various online sources provided details on different types of oil mist detectors, their functions, and systems.
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