Fuel mixture heating device of an internal combustion engine

Internal-combustion engines – Charge forming device – Heating of combustible mixture

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Details

261142, 219206, F02M 3100

Patent

active

043959938

ABSTRACT:
A fuel mixture heating device of an internal combustion engine having a downdraft type carburetor mounted on the collecting portion of the intake manifold. A hollow cylindrical heater vessel is arranged at the lower end of the air horn of the carburetor. The heater vessel comprises an inner pipe, an outer pipe and a PTC elements inserted between the inner pipe and the outer pipe for heating the inner pipe before the completion of warm-up of the engine. The inner pipe, having an inner diameter which is almost the same as that of the air horn, is arranged to be aligned with the air horn.

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