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- How do the volumetric efficiency and air-fuel ratio change as the engine's rotational speed changes? With a brief explanation of the change process with an explanation of the reasonsWhat is specific fuel consumption of an engine?How does a GDI system provide for a stratified charge in the combustion chamber?
- Why is the sulfur content in gasoline limited?As an engines compression ratio increases, what should happen to the octane rating of the gasoline?1-What is specific fuel consumption of an engine? 2-Why does BSFC decrease with load? 3-What happens when petrol is used in diesel engine? Which engine is more efficient? 4-Which engine produces the most torque (diesel or petrol)? Differentiate SFC and TFC
- Which of the following is not a true statement about diesel engines?a. The operation and main components of a diesel engine are comparable to those of a gasoline engine. Diesel and gasoline engines are available as four- stroke combustion cycle engines. Diesel engines rely on glow plugs instead of spark plugs to initiate ignition. The compression ratio of diesel engines is typically three times that of a gasoline engine.Q3 List the main components of the internal combustion engine.Define the effect of volatility on petrol engine performance. n
- which of the following is an indicator of combustion efficiency and not emission?2- Explain the differences and similarities between the engine temperature sensitivity and the incoming air temperature, and how do they affect the balance of the injected fuel volume determined by the electronic control unit?How does fuel combustion affect the performance of an engine?