Apparatus for measuring the air quantity supplied to an internal

Details Apparatus for measuring the air quantity supplied to an internal Apparatus for measuring the air quantity supplied to an internal

1979-08-02

1981-07-21

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

73204, G01F 168

Patent

active

042791464

ABSTRACT:
A method for measuring the air quantity supplied to an internal combustion engine by means of a measurement sensor disposed in a bridge circuit having a temperature-dependent resistor (for example, a hot wire or hot film) in the air intake manifold and having a temperature control apparatus, the temperature of the measurement sensor being controlled in an open or closed loop independently of the temperature of the medium to be measured, the properties of the medium to be measured which cause the measurement effect in the hot wire or hot film being dependent on the temperature. With an identical flow quantity but different temperatures in the medium, a correct measurement indication is obtained by making the excess temperature of the hot wire dependent on the temperature of the medium to be measured. The apparatus for open-loop or closed-loop control of this excess temperature contains, in the parallel arm to the quantity measurement device of the bridge circuit, two resistors disposed in sequence, one of which is also disposed in the air intake manifold in order to detect the air temperature, and the total temperature coefficient is set, by means of the selection of the individual temperature coefficients of the two resistors as well as their resistance values, in such a manner that the actual measurement sensor has a controlled excess temperature.

REFERENCES:
patent: 3754201 (1973-08-01), Adams
patent: 3928800 (1975-12-01), Strenglein
patent: 3995481 (1976-12-01), Djorup
patent: 4057206 (1977-11-01), Duncan et al.
patent: 4080821 (1978-03-01), Johnston
patent: 4196622 (1980-04-01), Peter

Affiliated with

Also associated with

Rating

Apparatus for measuring the air quantity supplied to an internal 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 air quantity supplied to an internal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring the air quantity supplied to an internal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2432320