METHOD AND DEVICE FOR IDENTIFICATION OF KNOCKS AT CHANGING ICE OPERATING CONDITIONS

摘要

FIELD: engines and pumps.;SUBSTANCE: invention can be used at designing control system for ICE 2 running on several types of fuel. Identification of knocks at changing the type of fuel consists in registration of characteristic of signal (ikr) describing the ICE housing noise and definition of base level of background noise (rkr) by filtration in low-pass filter (LPF) LPF filtration factor (TPF) is varied during transition from one fuel to the other. Note here that magnitude of said factor is set to lower value that moment. Occurrence of knocks is defined proceeding from threshold value (SW) to be coordinated at changing of fuel type. Proposed device comprises housing noise registration unit 5 to record the characteristic of signal (ikr) and knocks identification unit 4 to register aforesaid signal and to determine its base level (rkr). Adjustment is performed by changing the throttle position, amount of fed fuel or ignition dwell angle.;EFFECT: lower probability of false operation of control system.;7 cl, 3 dwg