An engine carburetor freeze-proof apparatus that is compact in structure to minimize
its impact upon the arrangement of member parts of the vehicle and lowers production
cost by providing a pipe to the engine to connect a heating joint of the carburetor,
combustion blow-by from the engine enters through the heating joint into a heating
passage of the carburetor to heat up the carburetor thus to prevent it from being
frozen, then the blow-by being discharged through an output pipe tube from the
carburetor to be reclaimed by an air filter.
