Which component is also commonly referred to as the piston pin and secures the connecting rod to the piston?

Which component is also commonly referred to as the piston pin and secures the connecting rod to the piston?

• A. Piston Pin
• B. Connecting Rod End
• C. Wrist Pin
• D. Piston Clip

Answer: (C)

The wrist pin (also called the gudgeon pin) is the cylindrical pin that passes through the piston bosses and the small end of the connecting rod, securely attaching the rod to the piston while still allowing the rod to pivot as the piston moves. This pin must endure significant shear and bending loads from the piston’s reciprocating motion, and it’s retained with clips or caps to prevent it from moving out of place. The reason it’s described as also being the piston pin is that the pin itself is the component that joins the piston to the rod; in many contexts people refer to it simply as the piston pin. The other parts don’t perform this pivoting pin function: the connecting rod end is the portion of the rod that connects to the pin, the piston clip is just a retaining ring, and a piston pin is another name for the same pin, not a separate securing component.

The wrist pin (also called the gudgeon pin) is the cylindrical pin that passes through the piston bosses and the small end of the connecting rod, securely attaching the rod to the piston while still allowing the rod to pivot as the piston moves. This pin must endure significant shear and bending loads from the piston’s reciprocating motion, and it’s retained with clips or caps to prevent it from moving out of place. The reason it’s described as also being the piston pin is that the pin itself is the component that joins the piston to the rod; in many contexts people refer to it simply as the piston pin. The other parts don’t perform this pivoting pin function: the connecting rod end is the portion of the rod that connects to the pin, the piston clip is just a retaining ring, and a piston pin is another name for the same pin, not a separate securing component.