Regulating device for control variables of an internal combustio

Details Regulating device for control variables of an internal combustio Regulating device for control variables of an internal combustio

1981-07-10

1984-08-21

Dolinar, Andrew M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123435, 123416, 123487, 123501, 73 35, F02D 500, F02D 3702

Patent

active

044664060

ABSTRACT:
A regulating device is proposed for control variables of an internal combustion engine, in particular for the fuel metering signal and the ignition signal, which has an intervention capability for signals of at least one knocking sensor on the engine via a knocking-signal evaluation circuit; this knocking-signal evaluation circuit includes a frequency recognition circuit and preferably an amplitude recognition circuit, and it detects and evaluates the knocking signal only during specific times or angles relating to the ignition signal. The frequency recognition circuit is realized by means of two counters. The counting range of the first counter marks the value of the upper threshold frequency which can be recognized, while the counting range of the second counter characterizes the frequency band. Finally, by means of a third counter, a specific disturbance interval can be established, in order to cause the frequency recognition circuit to respond only after the appearance of a predetermined number of pulses of the predetermined frequency, thus bringing about an adjustment of the control variables.

REFERENCES:
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patent: 4012942 (1977-03-01), Harned
patent: 4116173 (1978-09-01), McDougal et al.
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patent: 4243009 (1981-01-01), Staerzl
patent: 4249494 (1981-02-01), Guipaud
patent: 4290398 (1981-09-01), Hattori et al.
patent: 4314534 (1982-02-01), Nakajima et al.

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