Internal Combustion Engine Basics
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Internal Combustion Engine Basics

Test your knowledge of the fundamental components and processes of internal combustion engines, including cylinders, pistons, crankshafts, and more. Learn about the four-stroke cycle, engine types, fuel systems, emissions, and efficiency. Evaluate your understanding of torque, horsepower, and engine displacement.

Created by
@SupportiveCarolingianArt

Questions and Answers

What is the function of the crankshaft?

To convert up-and-down motion of pistons into rotary motion

Which engine type uses a spark plug to ignite air and fuel?

Spark Ignition (SI) Engine

What is the purpose of the camshaft?

To operate valves that allow air and fuel into cylinders

What is measured in miles per gallon (mpg) or liters per 100 kilometers (L/100km)?

<p>Fuel Efficiency</p> Signup and view all the answers

What is the unit of measurement for engine power?

<p>Horsepower (hp)</p> Signup and view all the answers

What is the total volume of all cylinders measured in?

<p>Liters (L) or cubic inches (in³)</p> Signup and view all the answers

Study Notes

Basic Components

  • Cylinders: Where combustion takes place
  • Pistons: Move up and down in cylinders, driven by explosive force of combustion
  • Crankshaft: Converts up-and-down motion of pistons into rotary motion
  • Camshaft: Operates valves that allow air and fuel into cylinders and exhaust gases out
  • Valves: Control flow of air and fuel into cylinders and exhaust gases out

Four-Stroke Cycle

  1. Intake: Air and fuel enter cylinder through intake valve
  2. Compression: Intake valve closes, piston moves up, compressing air and fuel
  3. Power: Spark plug ignites air and fuel, causing piston to move down
  4. Exhaust: Exhaust valve opens, piston moves up, pushing exhaust gases out

Engine Types

  • Spark Ignition (SI) Engine: Uses spark plug to ignite air and fuel (e.g., gasoline engine)
  • Compression Ignition (CI) Engine: Uses heat generated by compression to ignite air and fuel (e.g., diesel engine)

Fuel Systems

  • Carburetor: Mixes air and fuel for older engines
  • Fuel Injection: Sprays fuel into cylinders at precise times for modern engines

Emissions and Efficiency

  • Emissions: Harmful gases released by engine, including CO, HC, NOx, and PM
  • Fuel Efficiency: Measured by miles per gallon (mpg) or liters per 100 kilometers (L/100km)
  • Emissions Control: Systems to reduce emissions, such as catalytic converters and exhaust gas recirculation

Additional Concepts

  • Torque: Rotational force of engine, measured in Newton-meters (Nm) or foot-pounds (ft-lb)
  • Horsepower: Unit of measurement for engine power, calculated from torque and engine speed
  • Engine Displacement: Total volume of all cylinders, measured in liters (L) or cubic inches (in³)

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