Impeller flow-meter pulsation damping

Details Impeller flow-meter pulsation damping Impeller flow-meter pulsation damping

1981-04-08

1983-06-28

Myracle, Jerry W.

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

73114, 73707, G01F 100

Patent

active

043898971

ABSTRACT:
The subject matter of the invention is an impeller flow-meter, particularly for accurate measurement of the flow rate of liquid fuel fed to an internal-combustion engine.
In the flow-meter according to the invention, an impeller chamber (1) is provided with an inlet pipe (2), surrounded coaxially by an ante-chamber (3). A supply pipe (4) is provided for the liquid fuel and an offtake pipe for excess fuel, these pipes being situated in different planes along the axis of ante-chamber (3). A space (6) is located between the entrance end of inlet pipe (2) and the exit end of supply pipe (4). A slot (7) is formed between the outer wall of inlet pipe (2) and the inner wall of the coaxial ante-chamber (3). The slot (7) communicates with space (6) and offtake pipe (5). As a result of this structure, pulsations in the liquid supply, which would affect the impeller accuracy, are substantially extinguished in space (6) before reaching the impeller chamber (1).

REFERENCES:
patent: 2210480 (1940-08-01), Brice
patent: 2749752 (1956-06-01), Gehre
patent: 3867840 (1975-02-01), Baatz
patent: 4092850 (1978-06-01), Erwin, Jr.

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