Questions and Answers
What is the main part of an engine where combustion takes place?
What is the role of a piston in an engine?
A sliding piece that moves against fluid pressure within a chamber.
The cylinder head forms the bottom of the engine block.
False
What connects the piston to the crankshaft?
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The __________ transmits reciprocating motion of the piston into rotary motion.
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What is the purpose of an oil sump?
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What does the camshaft do in an engine?
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Valves are located at the bottom of the cylinder head.
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What is the function of a spark plug?
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What is the role of an injector in a diesel engine?
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What regulates the timing of valves in an engine?
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What is the purpose of a manifold?
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What does piston rings provide between the piston and cylinder?
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What is the function of gaskets in an engine?
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What connects the piston to the connecting rod?
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What is the purpose of bearings in an engine?
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Study Notes
Cylinder Block
- Main component of an engine where fuel combustion occurs.
- Other parts such as pistons, connecting rods, and crankshaft are mounted on it.
Piston
- A cylindrical element that moves due to fluid pressure within a cylinder.
- Functions by cycling back and forth to facilitate engine operation.
Cylinder Head
- Seals the engine block and completes the top of the compression chamber.
Connecting Rod
- Serves as a link between the piston and the crankshaft, transmitting motion.
Crankshaft
- Located at the bottom of the cylinder block, it converts piston reciprocating motion into rotary motion.
- This rotary motion powers the vehicle's wheels.
Oil Sump
- Attached to the lower end of the cylinder block, it holds oil for lubricating moving engine components.
Camshaft
- A rotating shaft that operates to open and close intake and exhaust valves within the engine.
Valves
- Positioned on the cylinder head, they control the intake of air-fuel mixture and the exhaust of gases.
- Both inlet and exhaust valves must be closed to maintain pressure in the cylinder.
Spark Plug
- Utilized in petrol engines, it ignites the air-fuel mixture during the compression stroke in the cylinder.
Injector
- Used in diesel engines, this component sprays fuel into the cylinder at the end of the compression stroke.
Push Rod
- Activates valve timing by transferring motion from the camshaft to the rocker arm when the camshaft is located at the bottom of the cylinder head.
Manifold
- Bolted on the cylinder head, there are separate manifolds for intake and exhaust.
- Distributes the air-fuel mixture evenly and collects exhaust gases from the cylinders.
Piston Rings
- Ensures a good seal and minimizes friction between the piston and the cylinder.
- Designed with a split for easy installation into grooves on the piston.
Gaskets
- Seals between the cylinder head and block to prevent pressure loss.
- Placed strategically to maintain engine integrity.
Gudgeon Pin
- Parallel pin that connects the piston to the small end of the connecting rod, allowing for pivotal movement.
Engine Bearing
- Supports moving parts within the engine to minimize friction.
- Two types of bearings are used: sliding and rolling bearings, with the crankshaft needing reliable support for efficiency.
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Description
Test your knowledge of essential engine components with these flashcards. Each card provides a definition of key parts like the cylinder block and piston, crucial for understanding engine mechanics. Perfect for students and automotive enthusiasts alike!
