ENGINE ANTI-DIESEL AND DECELERATION CONTROL

摘要

The throttle valve of a downdraft type carburetor is controlled in its movement by a servo in turn controlled by manifold vacuum changes; servo springs initially move the throttle valve to a closed position for engine anti-dieseling; engine running vacuum moves the servo diaphragm to open the throttle valve to an idle speed position; and, engine decelerations effect a delayed throttle valve closing to reduce emissions.