초록 ▼

Fluctuations of engine speed in the frequency range from 2 to 8 Hz, which produce “bucking”behavior of a motor vehicle, are detected by passing engine speed signals through a filter which reduces and delays the oscillations and a difference signal is then produced between the original and the proces

Fluctuations of engine speed in the frequency range from 2 to 8 Hz, which produce “bucking”behavior of a motor vehicle, are detected by passing engine speed signals through a filter which reduces and delays the oscillations and a difference signal is then produced between the original and the processed speed signal in order to derive an alternating signal in the form of a square wave indicating the sign of a correction to be made to engine ignition timing for counteracting the bucking oscillations of engine speed. The square wave determines the sign of an anti-bucking ignition timing correction factor, of which the absolute value may be constant or may vary according to the sign of the correction and, if desired, also in accordance with engine operation parameters.

대표청구항 ▼

Apparatus for damping low-frequency bucking oscillations in the operation of a motor vehicle having an electrical ignition system, including means for producing a signal corresponding to an operating parameter of said engine indicative of said oscillations and means for control of at least one contr

Apparatus for damping low-frequency bucking oscillations in the operation of a motor vehicle having an electrical ignition system, including means for producing a signal corresponding to an operating parameter of said engine indicative of said oscillations and means for control of at least one control magnitude of said engine in a manner counteracting said oscillations, said apparatus further comprising, in a system in which said control magnitude is the ignition angle (aDa