37 Questions
Why are solid fuels not commonly used in internal combustion engines?
They are difficult to handle and store.
What is a major advantage of gaseous fuels over solid fuels in internal combustion engines?
They mix more homogeneously with air.
Why are gaseous fuels considered ideal for internal combustion engines?
They eliminate distribution and starting problems.
What restricts the use of gaseous fuels in automobiles?
Storage and handling problems.
Why were solid fuels like finely powdered coal attempted in the early stages of engine development?
To explore alternatives to liquid fuels.
What is a primary reason for the limited practical application of solid fuels today?
Storage and feeding complications.
What is a major disadvantage of nozzles that tend to dribble?
Their spray angle is too narrow.
What is a notable advantage of multi-hole nozzles compared to other types?
Ability to distribute fuel properly with lower air motion.
Which component is commonly used in vehicles as part of a fuel injection system?
Bosch-type Fuel Pump
What is the function of the electric motor in a Bosch-type fuel pump?
To drive the pumping mechanism
Why is a pressure regulator included in some Bosch-type fuel pumps?
To ensure optimal engine performance
What is crucial for efficient fuel atomization and combustion in an engine?
Delivering pressurized fuel
What is the primary reason for considerable research efforts being made to improve gas engines?
To address the risks and expenses associated with liquefied gaseous fuels
Which of the following is NOT a common type of fuel additive mentioned in the text?
Diesel Ignition Enhancers
What is the main purpose of using fuel stabilizers in engines?
To prevent fuel degradation and oxidation during storage
Why can dependence on fossil fuels pose risks to energy security?
Due to the limited number of exporting countries
Which fuel additive type helps prevent the formation of wax crystals in diesel fuel?
Anti-gelling Agents
What is the primary environmental impact associated with fossil fuels mentioned in the text?
Increase in air and water pollution
What is the main purpose of cetane boosters in diesel fuel?
To raise the cetane number for better ignition and combustion
Why are fossil fuels considered non-renewable resources?
As they will eventually run out and are finite
What is the main function of detergents as fuel additives?
Clean and remove deposits from various engine parts
How do lubricity improvers affect engine components?
Enhance lubricating properties, reducing friction and wear
What is the primary function of the fuel feed pump in an internal combustion engine?
Delivering fuel from the fuel tank to the engine at required pressure
Which alternative fuel is derived from algae and can be grown using sunlight and carbon dioxide?
Algae-based fuels
Why might economies heavily dependent on fossil fuels be vulnerable?
Fluctuations in global energy prices affecting economic stability
What is a significant technical challenge associated with transitioning to alternative energy sources?
Addressing infrastructural challenges
Which of the following is a cleaner-burning alternative to traditional gasoline or diesel?
Propane
Why are renewable energy sources providing increasing competition to fossil fuels?
Decreasing costs of renewable energy sources
In which stage does the fuel feed pump pressurize fuel in an internal combustion engine?
Pressure Stage
Which of the following is NOT an example of an alternative/non-conventional fuel?
$Natural Gas (CNG)$
What is a challenge associated with transitioning away from fossil fuels to sustainable energy sources?
$Maintaining economic stability for reliant industries$
What type of fuel injection system delivers fuel directly into the engine cylinders in a precise manner?
Direct Injection
Which type of fuel feed system mixes air and fuel in a fixed ratio before entering the engine cylinders?
Carburetor System
In which type of injection system is fuel injected directly into the combustion chamber instead of the intake manifold?
Direct Injection
What is the function of a nozzle in the injector?
Spraying liquid fuel into the combustion chamber
Which type of nozzle provides a spray operating at low injection pressures and avoids weak injection and dribbling?
Pintle Nozzle
In a Direct Injection system, where is the fuel injected?
Directly into the combustion chamber
Explore the various types of fuels used in internal combustion engines, including liquid, gaseous, and solid fuels. Learn about the challenges associated with using solid fuels and disposing of residue after combustion.
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