Patent ID: 8444119

Claim:
A carburetor comprising: a housing; an intake passage section disposed in said housing; a throttle element arranged in said intake passage section; a choke element arranged in said intake passage section upstream of said throttle element; at least one fuel opening that opens downstream of said choke element into said intake passage section; a fuel valve controlling a fuel quantity supplied to said at least one fuel opening; at least one auxiliary fuel port that opens upstream of said choke element into said intake passage section; an auxiliary fuel path connected to said at least one auxiliary fuel port, wherein said at least one auxiliary fuel port is supplied with fuel, independent of a fuel supply provided by said fuel valve, through said auxiliary fuel path; a check valve disposed in said auxiliary fuel path, wherein said check valve opens in a flow direction toward said at least one auxiliary fuel port; wherein said auxiliary fuel path comprises a fixed throttle bore designed such that, when said throttle element is completely open and said choke element is completely open, approximately 10% to approximately 40% of a fuel quantity supplied in total to said intake passage section is supplied through said at least one auxiliary fuel port.