F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
317/5.5
F02P 5/00 (2006.01) F02P 5/155 (2006.01)
Patent
CA 1052857
TIMING OF INTERNAL COMBUSTION AS FUNCTION OF OPERATING PARAMETERS (D#72, 594-F) ABSTRACT OF THE DISCLOSURE A control system controls the occurrence and the duration of time intervals during which sparks may be provided in the cylinders of an internal combustion engine driving a crank shaft as a function of loading parameters on the engine. In an automotive engine control system, pa- rameters such as the vacuum in the carburetor, the throttle setting and the torque of the crank shaft are sensed, and corresponding signals are provided by the sensor. A dis- tributor provides a pulse signal having a repetition rate corresponding to the rotational speed of the crank shaft. A frequency-to-voltage converter converts the pulse signal to an output voltage. The sensed parameter signals and the voltage from the converter are summed. The sum signal is used to control a one-shot multivibrator which is triggered by each pulse in the pulse signal from the distributor. The sum signal controls the width of the pulse from the one-shot multivibrator so as to control the timing of the various sparks in the engine's cylinders. The voltage provided by the frequency-to-voltage converter is applied to another one-shot multivibrator which is triggered by the output from the first one-shot multivibrator to con- trol the width of the pulse provided by the second one- shot, the pulse provided by the second one-shot is applied to the ignition system and controls the duration of the spark time interval being applied to each cylinder, as a function of the rotational speed of the crank shaft. I
238900
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