Match each internal engine component to its primary mechanical function.
- Wrist pin (gudgeon pin)Pivots inside the piston to secure the small end of the connecting rod
- Valve springApplies tension to return a poppet valve firmly to its seated, closed position
- Cylinder boreServes as the smooth cylindrical guide wall containing piston travel
- Crankshaft counterweightBalances reciprocating and rotational inertia to reduce engine vibration
Answer
Wrist pin matches pivoting inside the piston to secure the small end of the connecting rod; Valve spring matches applying tension to return a poppet valve firmly to its seated, closed position; Cylinder bore matches serving as the smooth cylindrical guide wall containing piston travel; Crankshaft counterweight matches balancing reciprocating and rotational inertia to reduce engine vibration.
Each internal component performs a dedicated role in the mechanical operation of an internal combustion engine: the wrist pin links the piston to the connecting rod, the valve spring forces valves shut after actuation, the cylinder bore guides piston travel, and crankshaft counterweights balance reciprocating forces.
Step-by-Step Solution
Key Concept
Internal Engine Component Identification and Functions
Estimated Time:45s