I.C. એન્જિનના ઘટકો અને ઉર્જા પદ્ધતિઓ
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ઈન્ટરનેલ કરબસ્ટન ઈનજનના મુખ્ય ઘટકોમાં શું સામેલ નથી?

  • પિસ્ટન
  • ક્રેન્કશાફ્ટ
  • પર્યાવરણ આધારિત સિસ્ટમ (correct)
  • કનેક્ટિંગ રોડ
  • કઈ પ્રક્રિયા ચાર-સ્ટ્રોક ચક્રનો ભાગ છે?

  • વિશ્લેષણ (correct)
  • પૂરક પ્રક્રિયા
  • વિસ્ફોટ
  • દ્રાવક પ્રગટન
  • કઈ સામગ્રી દહન પ્રક્રિયા માટે ઉત્સર્જનંદ નવીના પૂરક તરીકે ઉપયોગમાં લેવાય છે?

  • અલ્કોહલ
  • ડીઝલ (correct)
  • અથવા વાયીફલ
  • ઉષ્મા ટ્રાન્સફર
  • થર્મોડાયનેમિક્સમાં એન્ટ્રોપીનો અર્થ શું છે?

    <p>અવ્યવસ્થા નું માપ</p> Signup and view all the answers

    ઇ Oddsિનમાં ઇઘ્મનની કાર્યક્ષમતા સુધારવા માટે કયો તારણ લેવો પડે છે?

    <p>ઇન્ઝિન મેનેજમેન્ટ સિસ્ટમનું ટ્યુનિંગ</p> Signup and view all the answers

    કઈ ઓકટેન રેટિંગ પ્રદાન કરે છે?

    <p>ઈધનનાં બળતણનો પ્રભાવ</p> Signup and view all the answers

    ક્યા પ્રકારનું બળતણ કંપ્રેશન-ઇન્ઝન માટે સામાન્ય છે?

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

    કઈ સિસ્ટમમાં હીટ ટ્રાન્સફર બંધારણમાં થાય છે?

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

    Study Notes

    I.C. Engine Components

    • Internal Combustion (IC) engines convert chemical energy in fuel into mechanical energy.
    • Key components include:
      • Piston: Moves up and down in the cylinder.
      • Connecting Rod: Connects the piston to the crankshaft.
      • Crankshaft: Rotates to provide output power.
      • Cylinder: Houses the piston and combustion process.
      • Valves (intake and exhaust): Control the flow of air and exhaust gases.
      • Camshaft: Controls the opening and closing of valves.
      • Fuel System: Delivers fuel to the engine.
      • Cooling System: Keeps the engine from overheating.
      • Lubrication System: Provides lubrication to moving parts.
      • Ignition System: Provides ignition for the combustion process.

    Thermodynamics

    • Four-stroke cycle:
      • Intake: Air-fuel mixture drawn into the cylinder.
      • Compression: Air-fuel mixture compressed.
      • Combustion: Fuel ignites, creating expansion pressure.
      • Exhaust: Exhaust gases expelled from the cylinder.
    • Two-stroke cycle: Completes the cycle in two revolutions of the crankshaft, generally more efficient in terms of power per cylinder volume due to the simpler design.
    • Ideal Otto cycle: Theoretical model for gasoline engines.
    • Ideal Diesel cycle: Theoretical model for diesel engines.
    • Heat transfer: Occurs between the combustion chamber and surrounding components.
    • Entropy: A measure of disorder in a system. The thermodynamic properties of the engine and its components are related to the efficiencies and internal processes.

    Performance Tuning

    • Techniques to improve engine performance:
      • Tuning the air-fuel mixture: Optimizing fuel injection and air intake.
      • Increasing compression ratio: Improves engine efficiency but also increases risk of problems if not carefully managed.
      • Modifications to the intake and exhaust systems.
      • Engine management systems (EMS) allow for dynamic, real-time tuning. These systems can fine tune the engine based on engine temperature and other variables to optimize the efficiency of engine running.
      • Enhancing ignition timing (spark plug timing), directly impacting when the spark occurs.

    Fuel Types

    • Gasoline (petrol): Common in spark-ignition engines.
    • Diesel: Common in compression-ignition engines.
    • Alternative fuels: Ethanol, biodiesel, natural gas, hydrogen.
      • They each present with varying properties and requirements for efficient engine function, also have advantages and disadvantages for emission control.
    • Fuel properties: Octane rating, cetane rating, volatility, energy content.
    • Fuel characteristics are significant in determining an engine's power output, efficiency, and overall performance.

    Emission Control

    • Regulations aim to reduce harmful emissions from internal combustion engines.
    • Common Techniques:
      • Catalytic converters: Reduce pollutants in exhaust gases.
      • Exhaust gas recirculation (EGR): Reduces nitrogen oxides (NOx) emissions by recycling exhaust gases.
      • Fuel injection strategies: Adjust the fuel-air mixture for optimum combustion.
      • Emission sensors: Monitor and control emissions.
    • Trends and advancements in emission control technology constantly evolve.
    • Regulations and standards vary globally.

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    આ ક્વિઝમાં આંતરિક દાબ એન્જિનના મુખ્ય ઘટકો વિશે જાણકારી ઉપરાંત થર્મોડાયનામિક્સના ચાર-સ્ટ્રોક સાકલ ચક્રની પ્રક્રિયા વિશે માહિતી આપવામાં આવી છે. તમને આ એન્જિનના કાર્યપ્રણાળી અને ઘટકોની સમજ મળશે.

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