What component is forced up into cylinder bores by the crankshaft?

What component is forced up into cylinder bores by the crankshaft?

• A. Piston
• B. Connecting rod
• C. Crankshaft bearing
• D. Camshaft

Answer: (A)

Piston movement in the engine is driven by the crankshaft. The crankshaft has offset throws that push on the end of the connecting rod, and as the crankshaft rotates, these throws force the piston to move up into and down out of the cylinder bore. The connecting rod simply transmits that force from the piston to the crankshaft, converting the crank’s rotation into the piston's linear motion. The camshaft, on the other hand, operates the valves, and a crankshaft bearing supports the crankshaft. So the component that is forced up into the cylinder bore by the crankshaft is the piston.

Piston movement in the engine is driven by the crankshaft. The crankshaft has offset throws that push on the end of the connecting rod, and as the crankshaft rotates, these throws force the piston to move up into and down out of the cylinder bore. The connecting rod simply transmits that force from the piston to the crankshaft, converting the crank’s rotation into the piston's linear motion. The camshaft, on the other hand, operates the valves, and a crankshaft bearing supports the crankshaft. So the component that is forced up into the cylinder bore by the crankshaft is the piston.