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公开(公告)号：DE69708089D1
公开(公告)日：2001-12-13
申请号：DE69708089
申请日：1997-06-19
Applicant: ABB AB VAESTERAAS
Inventor： JEREMIASSON JAN , SOBEL JARL , WALLIN CHRISTER
Abstract: PCT No. PCT/SE97/01120 Sec. 371 Date Feb. 8, 1999 Sec. 102(e) Date Feb. 8, 1999 PCT Filed Jun. 19, 1997 PCT Pub. No. WO97/48894 PCT Pub. Date Dec. 24, 1997A method for detection of misfiring of an internal combustion engine, wherein the torque of the internal combustion engine is measured with the aid of a torque sensor mounted on the crankshaft of the internal combustion engine and wherein a torque signal is sampled speed-synchronously with the aid of a sensor. A digital filtering of the torque signal is carried out with a digital filter with a finite impulse response which blocks or damps a selection of integer or half-integer multiples of the speed of the internal combustion engine. The selection of speed multiples is substantially dependent on the number of cylinders of the internal combustion engine.
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公开(公告)号：DE69708089T2
公开(公告)日：2002-08-29
申请号：DE69708089
申请日：1997-06-19
Applicant: ABB AB VAESTERAAS
Inventor： JEREMIASSON JAN , SOBEL JARL , WALLIN CHRISTER
Abstract: PCT No. PCT/SE97/01120 Sec. 371 Date Feb. 8, 1999 Sec. 102(e) Date Feb. 8, 1999 PCT Filed Jun. 19, 1997 PCT Pub. No. WO97/48894 PCT Pub. Date Dec. 24, 1997A method for detection of misfiring of an internal combustion engine, wherein the torque of the internal combustion engine is measured with the aid of a torque sensor mounted on the crankshaft of the internal combustion engine and wherein a torque signal is sampled speed-synchronously with the aid of a sensor. A digital filtering of the torque signal is carried out with a digital filter with a finite impulse response which blocks or damps a selection of integer or half-integer multiples of the speed of the internal combustion engine. The selection of speed multiples is substantially dependent on the number of cylinders of the internal combustion engine.
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