Conventional Fuels for IC Engines
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Questions and Answers

Why are solid fuels not commonly used in internal combustion engines?

  • They are expensive.
  • They are not efficient in combustion.
  • They produce toxic gases.
  • They are difficult to handle and store. (correct)

    • What is a major advantage of gaseous fuels over solid fuels in internal combustion engines?

  • They produce less heat.
  • They are easier to dispose of.
  • They mix more homogeneously with air. (correct)
  • They are cheaper.

    • Why are gaseous fuels considered ideal for internal combustion engines?

  • They are cheaper than solid fuels.
  • They are easier to handle than liquid fuels.
  • They produce less residue after combustion.
  • They eliminate distribution and starting problems. (correct)

    • What restricts the use of gaseous fuels in automobiles?

    <p>Storage and handling problems.</p> Signup and view all the answers

    Why were solid fuels like finely powdered coal attempted in the early stages of engine development?

    <p>To explore alternatives to liquid fuels.</p> Signup and view all the answers

    What is a primary reason for the limited practical application of solid fuels today?

    <p>Storage and feeding complications.</p> Signup and view all the answers

    What is a major disadvantage of nozzles that tend to dribble?

    <p>Their spray angle is too narrow.</p> Signup and view all the answers

    What is a notable advantage of multi-hole nozzles compared to other types?

    <p>Ability to distribute fuel properly with lower air motion.</p> Signup and view all the answers

    Which component is commonly used in vehicles as part of a fuel injection system?

    <p>Bosch-type Fuel Pump</p> Signup and view all the answers

    What is the function of the electric motor in a Bosch-type fuel pump?

    <p>To drive the pumping mechanism</p> Signup and view all the answers

    Why is a pressure regulator included in some Bosch-type fuel pumps?

    <p>To ensure optimal engine performance</p> Signup and view all the answers

    What is crucial for efficient fuel atomization and combustion in an engine?

    <p>Delivering pressurized fuel</p> Signup and view all the answers

    What is the primary reason for considerable research efforts being made to improve gas engines?

    <p>To address the risks and expenses associated with liquefied gaseous fuels</p> Signup and view all the answers

    Which of the following is NOT a common type of fuel additive mentioned in the text?

    <p>Diesel Ignition Enhancers</p> Signup and view all the answers

    What is the main purpose of using fuel stabilizers in engines?

    <p>To prevent fuel degradation and oxidation during storage</p> Signup and view all the answers

    Why can dependence on fossil fuels pose risks to energy security?

    <p>Due to the limited number of exporting countries</p> Signup and view all the answers

    Which fuel additive type helps prevent the formation of wax crystals in diesel fuel?

    <p>Anti-gelling Agents</p> Signup and view all the answers

    What is the primary environmental impact associated with fossil fuels mentioned in the text?

    <p>Increase in air and water pollution</p> Signup and view all the answers

    What is the main purpose of cetane boosters in diesel fuel?

    <p>To raise the cetane number for better ignition and combustion</p> Signup and view all the answers

    Why are fossil fuels considered non-renewable resources?

    <p>As they will eventually run out and are finite</p> Signup and view all the answers

    What is the main function of detergents as fuel additives?

    <p>Clean and remove deposits from various engine parts</p> Signup and view all the answers

    How do lubricity improvers affect engine components?

    <p>Enhance lubricating properties, reducing friction and wear</p> Signup and view all the answers

    What is the primary function of the fuel feed pump in an internal combustion engine?

    <p>Delivering fuel from the fuel tank to the engine at required pressure</p> Signup and view all the answers

    Which alternative fuel is derived from algae and can be grown using sunlight and carbon dioxide?

    <p>Algae-based fuels</p> Signup and view all the answers

    Why might economies heavily dependent on fossil fuels be vulnerable?

    <p>Fluctuations in global energy prices affecting economic stability</p> Signup and view all the answers

    What is a significant technical challenge associated with transitioning to alternative energy sources?

    <p>Addressing infrastructural challenges</p> Signup and view all the answers

    Which of the following is a cleaner-burning alternative to traditional gasoline or diesel?

    <p>Propane</p> Signup and view all the answers

    Why are renewable energy sources providing increasing competition to fossil fuels?

    <p>Decreasing costs of renewable energy sources</p> Signup and view all the answers

    In which stage does the fuel feed pump pressurize fuel in an internal combustion engine?

    <p>Pressure Stage</p> Signup and view all the answers

    Which of the following is NOT an example of an alternative/non-conventional fuel?

    <p>$Natural Gas (CNG)$</p> Signup and view all the answers

    What is a challenge associated with transitioning away from fossil fuels to sustainable energy sources?

    <p>$Maintaining economic stability for reliant industries$</p> Signup and view all the answers

    What type of fuel injection system delivers fuel directly into the engine cylinders in a precise manner?

    <p>Direct Injection</p> Signup and view all the answers

    Which type of fuel feed system mixes air and fuel in a fixed ratio before entering the engine cylinders?

    <p>Carburetor System</p> Signup and view all the answers

    In which type of injection system is fuel injected directly into the combustion chamber instead of the intake manifold?

    <p>Direct Injection</p> Signup and view all the answers

    What is the function of a nozzle in the injector?

    <p>Spraying liquid fuel into the combustion chamber</p> Signup and view all the answers

    Which type of nozzle provides a spray operating at low injection pressures and avoids weak injection and dribbling?

    <p>Pintle Nozzle</p> Signup and view all the answers

    In a Direct Injection system, where is the fuel injected?

    <p>Directly into the combustion chamber</p> Signup and view all the answers

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