Safety arrangement for an internal combustion engine

Details Safety arrangement for an internal combustion engine Safety arrangement for an internal combustion engine

1984-01-17

1985-05-07

Moy, Magdalen Y. C.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123198DB, F02D 3100

Patent

active

045151253

ABSTRACT:
The invention is directed to a safety arrangement for an internal combustion engine having self-ignition where, in the sense of an overall system monitoring, specific signals relating to the operating conditions of the internal combustion engine are continuously monitored. These signals are indicative, for example, of the position of the throttle pedal, the computed rack-travel nominal or desired value, and the rotational speed. The monitored signals are processed and a corrected rack-travel nominal value is generated by means of a minimum-value selection circuit. The corrected rack-travel nominal value signal generated in this manner is fed to the rack controller of an EDC unit. At the same time, a deviation in rack travel is determined utilizing the corrected rack travel nominal value in combination with an actual-value signal of the rack travel fed back from the rack-travel sensor. The signal indicative of actual rack travel also serves for a comparison with the upper and lower limits of the rack-travel sensor voltage; and, depending on the error condition occurring, either the output stage of the rack controller is de-energized and/or the fuel-injection pump is simultaneously shut off by means of an electrical shutoff valve (ELAB); or, a decision for an emergency operation is made.

REFERENCES:
patent: 3699935 (1972-10-01), Adler et al.
patent: 3973539 (1976-08-01), Jones et al.
patent: 4357920 (1982-11-01), Stumpp et al.
patent: 4428341 (1984-01-01), Hassler et al.

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