INTERNAL COMBUSTION ENGINE OPERATION ANALYZER Russian patent published in 2003 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: invention relates to devices for measuring parameters of systems of internal combustion engines and it can be used in diagnosing condition of engines. Proposed analyzer contains starter current detector, ignition moment pulse generator, comparator, frequency multiplier, coincidence unit, current mean value indicator, inverter, starter current amplitude minimum and maximum values peak detectors and voltage difference indicator. First output of starter current detector, directly and through inverter, and first and second outputs of ignition moment pulse generator are connected with inputs of comparator. Frequency multiplier is placed between second output of starter current detector and coincidence unit input, whose other input is connected with output of comparator. Peak detectors are connected between second output of starter current detector and voltage difference indicator, and current mean value indicator is connected to third outputs of starter current detector and ignition moment pulse generator. Moreover, engine system operation analyzer includes additionally dc voltmeter and ammeter with current sensor, voltmeter being connected in parallel with input of starter current detector, and current sensor being installed on wire connecting plus terminal of storage battery with engine starter, enclosing the wire by its clamps. EFFECT: enlarged number of checked parameters of engine systems without starting the engine. 2 dwg