Podcast
Questions and Answers
What is the primary function of the crankshaft in an internal combustion engine?
What is the primary function of the crankshaft in an internal combustion engine?
What is the name of the process where air and fuel enter the cylinder through the intake valve?
What is the name of the process where air and fuel enter the cylinder through the intake valve?
What is the purpose of the turbocharger in an internal combustion engine?
What is the purpose of the turbocharger in an internal combustion engine?
What is the unit of measurement for torque?
What is the unit of measurement for torque?
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What is the purpose of the camshaft in an internal combustion engine?
What is the purpose of the camshaft in an internal combustion engine?
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What type of engine uses electric motors powered by a battery or fuel cell?
What type of engine uses electric motors powered by a battery or fuel cell?
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What is the purpose of fuel injection in an internal combustion engine?
What is the purpose of fuel injection in an internal combustion engine?
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What is the measure of the total volume of all cylinders in an engine?
What is the measure of the total volume of all cylinders in an engine?
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Study Notes
Engine Types
- Internal Combustion Engine (ICE): most common type of engine used in cars, burns fuel (gasoline or diesel) inside the engine to generate power
- Electric Engine: uses electric motors powered by a battery or fuel cell, zero emissions
- Hybrid Engine: combines ICE and electric motor for improved fuel efficiency and reduced emissions
Engine Components
- Cylinders: where fuel is burned to generate power, typically 4, 6, or 8 cylinders
- Pistons: move up and down in cylinders, driven by explosive force of fuel 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 air and fuel flow into cylinders and exhaust gases out
Engine Cycle
- Intake: air and fuel enter cylinder through intake valve
- Compression: air and fuel mixture is compressed by piston
- Power: spark plug ignites fuel mixture, generating power
- Exhaust: exhaust valves open, exhaust gases exit cylinder
Engine Performance
- Horsepower (HP): measure of engine power, typically measured at crankshaft
- Torque: rotational force of engine, measured in units of distance and force (e.g. lb-ft)
- Displacement: total volume of all cylinders, measured in liters (L) or cubic centimeters (cc)
Engine Technologies
- Fuel Injection: fuel is sprayed into cylinders at precise times, improving efficiency and performance
- Turbocharging: uses exhaust gases to drive turbine, increasing engine power and efficiency
- Variable Valve Timing: adjusts valve timing to improve engine performance and efficiency
Engine Basics
- Internal Combustion Engine (ICE) is the most common type of engine, burning fuel inside the engine to generate power.
- Electric Engines use electric motors powered by a battery or fuel cell, producing zero emissions.
- Hybrid Engines combine ICE and electric motor for improved fuel efficiency and reduced emissions.
Engine Components and Their Functions
- Cylinders are where fuel is burned to generate power, typically 4, 6, or 8 in number.
- Pistons move up and down in cylinders, driven by the explosive force of fuel combustion.
- Crankshaft converts the 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 air and fuel flow into cylinders and exhaust gases out.
The 4-Stroke Engine Cycle
- Intake: air and fuel enter the cylinder through the intake valve.
- Compression: air and fuel mixture is compressed by the piston.
- Power: spark plug ignites fuel mixture, generating power.
- Exhaust: exhaust valves open, and exhaust gases exit the cylinder.
Measuring Engine Performance
- Horsepower (HP) measures engine power, typically measured at the crankshaft.
- Torque is the rotational force of the engine, measured in units of distance and force (e.g., lb-ft).
- Displacement is the total volume of all cylinders, measured in liters (L) or cubic centimeters (cc).
Advanced Engine Technologies
- Fuel Injection sprays fuel into cylinders at precise times, improving efficiency and performance.
- Turbocharging uses exhaust gases to drive a turbine, increasing engine power and efficiency.
- Variable Valve Timing adjusts valve timing to improve engine performance and efficiency.
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Description
Learn about the different types of engines, including internal combustion, electric, and hybrid, as well as key engine components like cylinders and pistons.
