Apparatus for measuring the quantity of airflow passing through

Measuring and testing – Simulating operating condition – Marine

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

73204, G01M 1500

Patent

active

045650918

ABSTRACT:
Disposed in an intake pipe of an engine is a temperature-sensitive element formed of a resistance element whose resistance value varies with temperature. A heating current is supplied to the temperature-sensitive element through a transistor. The voltage of the heating current is set by a constant-voltage circuit. The temperature of the temperature-sensitive element is compared with a reference temperature of an auxiliary temperature-sensitive element. When the temperature of the temperature-sensitive element is increased to a predetermined level, an output signal is delivered from a comparator. A flip-flop circuit is reset by the output signal from the comparator, and is set by a start pulse signal. When the flip-flop circuit is set, the transistor is turned on, allowing the heating current to be supplied to the temperature-sensitive element. A burning-off instruction signal is supplied to a monostable multivibrator, and a signal with a duration suited for the burning-off operation is delivered from an AND circuit. In response to the output signal from the AND circuit, the flip-flop circuit is held set, and a reference voltage supplied to the differential amplifier is changed to a low level.

REFERENCES:
patent: 4357829 (1982-11-01), Kraus et al.
patent: 4373383 (1983-02-01), Plapp et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus for measuring the quantity of airflow passing through does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for measuring the quantity of airflow passing through , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring the quantity of airflow passing through will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2293476

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.