Method and apparatus for determining the proportions of the cons

Details Method and apparatus for determining the proportions of the cons Method and apparatus for determining the proportions of the cons

1978-03-27

1980-11-04

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123437, F02M 2506

Patent

active

042313341

ABSTRACT:
A method and apparatus for determining the proportions of the air-fuel mixture constituents supplied to an internal combustion engine from a mixture preparing device such as a carburator, a fuel injection device or other suitable mixture preparing device. The method according to the invention serves to simplify the processing of output signals that are supplied to a mixture preparing device having at least two .lambda. sensors. The invention is especially suitable for use with large engines with several exhaust conduit systems, such as so-called V-engines, in which generally there is an unequal mixture distribution between the two rows of cylinders. By employing at least two .lambda. sensors in the exhaust gas conduit system for monitoring the exhaust gas composition, one succeeds in determining the mixture composition of the air-fuel mixture applied to all cylinders, and in influencing the air-fuel mixture in a suitable supplementary manner by a feed back of the actual value signals generated by the .lambda. sensors to the fuel preparation device, so that a desirable overall exhaust gas average value can be achieved. The apparatus employs two integrators and suitable logic circuitry for applying the .lambda. sensor signals to the integrators in such a manner that one integrator regulates the entire mixture in the desired direction, according to the sensor signals supplied to it, while the other integrator sets the amplitude of the oscillation fluctuations at a value that corresponds to the .lambda. differential.

REFERENCES:
patent: 3782347 (1974-06-01), Schmidt et al.
patent: 3861366 (1975-01-01), Masaki et al.
patent: 3923016 (1975-12-01), Hoshi
patent: 4000614 (1977-01-01), Abthoff et al.
patent: 4127088 (1978-11-01), Ezue
patent: 4134375 (1979-01-01), Koseki et al.
patent: 4149502 (1979-04-01), Johnson et al.

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