Diesel Cycle Video Lecture | Thermodynamics - Mechanical Engineering

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FAQs on Diesel Cycle Video Lecture - Thermodynamics - Mechanical Engineering

1. What is a diesel cycle?
Ans. The diesel cycle is a thermodynamic cycle that describes the processes taking place in a diesel engine. It consists of four processes: intake, compression, combustion, and exhaust. This cycle is commonly used in diesel engines to convert chemical energy into mechanical work.
2. How does a diesel cycle differ from an Otto cycle?
Ans. The main difference between a diesel cycle and an Otto cycle is the method of ignition. In a diesel cycle, fuel is injected directly into the combustion chamber, and ignition occurs due to the high temperature of the compressed air. In contrast, an Otto cycle relies on a spark plug to ignite the fuel-air mixture.
3. What are the advantages of the diesel cycle compared to the Otto cycle?
Ans. The diesel cycle offers several advantages over the Otto cycle, including higher thermal efficiency, better fuel economy, and the ability to operate at higher compression ratios. Diesel engines also have a longer lifespan and are more suitable for heavy-duty applications due to their robust design.
4. What are the major challenges in the diesel cycle?
Ans. One of the major challenges in the diesel cycle is the formation of pollutants, such as nitrogen oxides (NOx) and particulate matter (PM). Diesel engines also tend to produce more noise and vibrations compared to gasoline engines. The combustion process in a diesel engine is highly sensitive to fuel quality, which can impact performance and emissions.
5. How can the efficiency of the diesel cycle be improved?
Ans. The efficiency of the diesel cycle can be improved through various methods, including turbocharging, which increases the air intake and allows for more complete combustion. Advanced fuel injection systems, such as common rail technology, can also optimize fuel delivery. Additionally, utilizing waste heat recovery systems and improving engine design can further enhance the efficiency of the diesel cycle.
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