Throttle Valve Linkage Mechanism Diagram - Engineering Schematic #309522 (License: Personal Use)

This black-and-white engineering schematic illustrates two distinct mechanical linkage designs (labeled A and B) used to transmit motion from an actuator to a throttle valve in internal combustion engines. Configuration A features a symmetric, open-frame four-bar linkage with spherical joints and a horizontal input lever, while Configuration B presents a more compact, inverted scissor-style arrangement with a vertical input rod. Both diagrams include directional arrows indicating input force and output direction toward the throttle valve.

Used in automotive engineering documentation, repair manuals, or educational resources explaining carburetor or throttle body actuation systems; targets mechanics, students, and engineers seeking to understand mechanical linkage design and function.