Heat sensitive flow meter and fuel controller

Details Heat sensitive flow meter and fuel controller Heat sensitive flow meter and fuel controller

2006-06-27

2006-06-27

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

Reexamination Certificate

active

07069157

ABSTRACT:
Provided is a heat sensitive flow meter for measuring a flow rate of a fluid passing through a flow passage provided in an internal combustion engine, including: a filter (7) (constituted of a fixed resister (3) and a capacitor (4)) for inputting a flow rate signal Vin outputted from a flow rate measurement unit installed within the flow passage to subject the flow rate signal to a predetermined filter processing; and a selection unit (8) (constituted of a fixed resister (2), an operational amplifier (5), and a diode (6)) for comparing the flow rate signal Vin outputted from the flow rate detection unit and a filter signal Vf passed through the filter (7) to select the signal having a higher voltage as a new flow rate signal.

REFERENCES:
patent: 4297881 (1981-11-01), Sasayama et al.
patent: 4359991 (1982-11-01), Stumpp et al.
patent: 4609292 (1986-09-01), Asano et al.
patent: 4672847 (1987-06-01), Uchiyama et al.
patent: 2004/0025584 (2004-02-01), Akamatsu et al.
patent: 2004/0040377 (2004-03-01), Tanimoto et al.
patent: 62-36522 (1987-08-01), None

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