Diaphragm carburetor
AssigneeAktiebolaget Electrolux
InventorsTore Aronsson, Bo Carlsson, Ove Donnerdal, Magnus Soderqvist
Life of this patent
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Abstract
A diaphragm carburetor having a carburetor casing defining a mixing passage. A measuring chamber is disposed in the carburetor casing and is partitioned into a fuel chamber and a compensation chamber separated by a control diaphragm. The compensating chamber is closed to the surrounding atmosphere but is connected to a channel. An opening of the channel enters into a space between the air filter and a fuel inlet in the mixing passage. The channel is at least partially defined by a pipe extending through the carburetor casing. The pipe is adapted for assembly/disassembly from outside of the casing. The pipe is attached to a spacer for properly orienting and fixing the pipe relative to the casing during assembly.
Claims20
A diaphragm carburetor comprising a carburetor casing (10) having a mixing passage (12) which, at its inlet side (38), is connected to an air filter, and a measuring chamber arranged in the casing, said measuring chamber being partitioned into a fuel chamber (22) and a compensation chamber (30) separated by a control diaphragm (24), whereby air is drawn in from the inlet side (38) and fuel is drawn in from the fuel chamber (22) into the mixing passage (12), the compensating chamber (30) is closed to the surrounding atmosphere but connected to a channel (34), an opening (36) of said channel enters into a space between the air filter and the fuel inlet (28) in the mixing passage (12), wherein said channel (32) is at least partially defined by a pipe (33) extending all the way through the casing (10) from said space to outside said casing, said pipe being adapted for assembly/disassembly from outside of said casing, and said pipe is attached to means (42, 62) for properly orienting and fixing said pipe relative to said casing during assembly.
A diaphragm carburetor comprising a carburetor casing (10) having a mixing passage (12) which, at its inlet side (38), is connected to an air filter, and a measuring chamber arranged in the casing, said measuring chamber being partitioned into a fuel chamber (22) and a compensation chamber (30) separated by a control diaphragm (24), whereby air is drawn in from the inlet side (38) and fuel is drawn in from the fuel chamber (22) into the mixing passage (12), the compensating chamber (30) is closed to the surrounding atmosphere but connected to a channel (34), an opening of said channel (36) enters into a space between the air filter and the fuel inlet (28) in the mixing passage (12), wherein said channel (32) is at least partially defined by a pipe (50), said pipe being provided with attachment means (54, 58) at its end opposite the opening (36), and wherein connecting means (60, 62) is arranged between the carburetor casing (10) and a cover (31), which closes off the compensating chamber (30) from the environment, said attachment means (54, 58) of said pipe (50) being arranged for connection to the connecting means to achieve locking between them, and the connecting means (60, 62) is provided with a passage between the channel (32) and the compensating chamber (30).
A diaphragm carburetor comprising a carburetor casing (10) having a mixing passage (12) which is connected at its inlet side (38) to an air filter, and a measuring chamber arranged in the casing, said measuring chamber being partitioned into a fuel chamber (22) and a compensating chamber (30) separated by a control diaphragm (24), whereby air is drawn in from the inlet side (38) and fuel is drawn in from the fuel chamber (22) into the mixing passage (12), the compensating chamber (30) is closed off to the surrounding atmosphere but is connected to a channel (32) with an opening (36) which enters into a space between the air filter and the fuel inlet (28) in the mixing passage (12), wherein a part of the channel (32) is integrated in a bend of a suction pipe (40) arranged between the carburetor and the air filter, and the opening (36) of the channel enters into the suction pipe (40).
Dependencies are inferred from the claim text.