Apparatus for controlling the closing limit of a carburetor throttle valve

Claim 1

In a motor vehicle having an internal combustion engine and an automatic transmission, said engine including an intake manifold and a carburetor with a throttle valve for supplying a fuel-air intake mixture to said intake manifold, said transmission including hydraulic control means for shifting said transmission and having at least one governor producing a first, speed-dependent hydraulic fluid pressure, apparatus for controlling the closing limit of said carburetor throttle valve comprising: (a) vacuum pressure actuated means for varying the closing limit of said throttle valve in dependence upon a second vacuum pressure applied thereto; (b) a vacuum line connecting said vacuum actuated means with a source of said second vacuum pressure downstream of said throttle valve; (c) valve means arranged in said vacuum line for controlling said second vacuum pressure transmitted by said line; and (d) means, coupled to said governor, for controll-said valve means in dependence upon said first speed-dependent fluid pressure said means including a control element movable by said first fluid pressure against a spring.