Conventional Fuels for IC Engines
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Questions and Answers

Why are solid fuels such as finely powdered coal not commonly used in internal combustion engines today?

  • They pose fewer storage problems compared to gaseous fuels.
  • They are easier to dispose of after combustion.
  • They are difficult to handle and store due to their solid form. (correct)
  • They mix homogeneously with air, causing combustion issues.

    • What is a disadvantage of using gaseous fuels in automobiles?

  • Storage and handling problems limit their use. (correct)
  • They are easier to handle and store.
  • They are difficult to ignite.
  • They pose starting problems similar to solid fuels.

    • Why were attempts made to generate gaseous or liquid fuels from charcoal for IC engines?

  • To increase the efficiency of the engines.
  • To eliminate combustion problems.
  • To reduce the cost of fuel.
  • To address the challenges of handling solid fuels. (correct)

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

    <p>They are less cumbersome to handle and store.</p> Signup and view all the answers

    Why do solid fuels face complications in the design of fuel feed systems for internal combustion engines?

    <p>Handling and feeding them prove to be quite challenging.</p> Signup and view all the answers

    What restricts the use of gaseous fuels in automobiles, despite their advantages for internal combustion engines?

    <p>Storage and handling difficulties associated with these fuels.</p> Signup and view all the answers

    What is a major disadvantage of the nozzle mentioned in the text?

    <p>It tends to dribble</p> Signup and view all the answers

    How many holes can a multi-hole nozzle consist of?

    <p>4 to 18 holes</p> Signup and view all the answers

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

    <p>To drive a pumping mechanism for pressurizing the fuel</p> Signup and view all the answers

    What role does the pressure regulator play in some Bosch-type fuel pumps?

    <p>Ensuring proper fuel atomization and combustion</p> Signup and view all the answers

    Why is regular maintenance essential for Bosch-type fuel pumps?

    <p>To ensure proper functioning of the fuel pump and system</p> Signup and view all the answers

    What distinguishes multi-hole nozzles from other types of nozzles mentioned in the text?

    <p>They require higher velocities for good mixing</p> Signup and view all the answers

    What is the main reason for the expensive and risky nature of liquefying gaseous fuels under pressure?

    <p>Safety hazards associated with storing liquefied gases</p> Signup and view all the answers

    Which of the following is NOT a principal commercial type of liquid fuel mentioned in the text?

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

    What is the role of cetane boosters in diesel fuels?

    <p>Raise the cetane number for better ignition</p> Signup and view all the answers

    What is the purpose of using fuel stabilizers?

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

    Which limitation of fossil fuels is related to challenges in reserves extraction as they become depleted?

    <p>Finite Resources</p> Signup and view all the answers

    How do antioxidants contribute to fuel system maintenance?

    <p>Reduce oxidation of fuel to prevent issues in the fuel system</p> Signup and view all the answers

    What is a common purpose of using anti-gelling agents in diesel fuel?

    <p>Prevent formation of wax crystals, especially in cold temperatures</p> Signup and view all the answers

    How do detergents contribute to engine performance?

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

    What environmental impact is associated with fossil fuels according to the text?

    <p>Finite resources depletion</p> Signup and view all the answers

    Which statement regarding energy security is supported by the text?

    <p>Dependence on fossil fuels poses risks to energy security due to reliance on a limited number of exporting countries.</p> Signup and view all the answers

    Which type of fuel system allows engines to run on a mixture of gasoline and ethanol?

    <p>Flex-Fuel System</p> Signup and view all the answers

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

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

    Which system uses a simplified form of fuel injection with injectors placed in the throttle body?

    <p>Throttle Body Injection (TBI)</p> Signup and view all the answers

    Which factor affects the distribution of fuel within the combustion chamber through the nozzle?

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

    Which type of nozzle provides a spray operating at low injection pressures and prevents carbon deposition on the nozzle hole?

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

    What is the function of atomization in the nozzle?

    <p>First phase in obtaining proper mixing of fuel and air</p> Signup and view all the answers

    Which type of nozzle has a single hole at the center of its body?

    <p>Single Hole Nozzle</p> Signup and view all the answers

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

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

    What is the advantage of using a Pintle Nozzle in fuel injection systems?

    <p>Avoids weak injection and dribbling</p> Signup and view all the answers

    In which type of fuel system are injectors placed at the entrance of the intake manifold in the engine?

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

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

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

    Which of the following is NOT an alternative/non-conventional fuel source mentioned in the text?

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

    What is a common challenge associated with transitioning away from fossil fuels to sustainable energy sources mentioned in the text?

    <p>Significant investments required</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

    What happens during the Suction Stage of a typical fuel feed pump's working process?

    <p>Creating a low-pressure zone for fuel intake</p> Signup and view all the answers

    Which of the following is a cleaner-burning alternative to diesel mentioned in the text?

    <p>Liquefied Petroleum Gas (LPG)</p> Signup and view all the answers

    What is a notable impact of economic vulnerability in regions heavily dependent on fossil fuels?

    <p>Impacts on overall economic stability due to global energy price fluctuations</p> Signup and view all the answers

    What are Battery Electric Vehicles (BEVs) powered by?

    <p>Electricity stored in batteries</p> Signup and view all the answers

    What type of mechanism may be used in an impeller-based fuel pump?

    <p>Generating centrifugal force</p> Signup and view all the answers

    What is one of the major challenges associated with developing technologies for cleaner use of fossil fuels?

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

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