초록 ▼

An apparatus for damping bounce-induced oscillations in an internal combustion engine having a fuel metering control for supplying fuel to the engine in accordance with various operational signals, which includes an engine speed sensor for generating an rpm signal proportional to the engine rpm, a s

An apparatus for damping bounce-induced oscillations in an internal combustion engine having a fuel metering control for supplying fuel to the engine in accordance with various operational signals, which includes an engine speed sensor for generating an rpm signal proportional to the engine rpm, a signal differentiation circuit for producing an rpm differential signal from the rpm signal, and a phase-shifting circuit, connected to receive the rpm differential signal, for supplying to the fuel metering control a bounce damping signal which is proportional to the rpm differential signal and which is phase-displaced with respect to the rpm differential signal so that the fuel metering control supplies fuel to the engine to countercontrol the bounce-induced oscillations of the engine. In a preferred embodiment, the phase-shifting circuit includes a controllable dead time element for varying the phase displacement in accordance with the bounce frequency so as to compensate for the total system transit time of the apparatus, to thus effect countercontrolling of the bounce oscillations which is correctly phased and correct in frequency.

대표청구항 ▼

An apparatus for damping low-frequency bounce oscillations in an internal combustion engine having first signal generating means for generating at least one operational signal and a fuel metering means for supplying fuel to the engine in accordance with said at least one operational signal, which co

An apparatus for damping low-frequency bounce oscillations in an internal combustion engine having first signal generating means for generating at least one operational signal and a fuel metering means for supplying fuel to the engine in accordance with said at least one operational signal, which comprises: rpm signal generating means for generating an rpm signal proportional to the engine rpm; signal differentiation means, connected to receive said rpm signal, for generating an rpm differential signal proportional to the rate of change of said rpm signal with respect to time; countercontrol signal generating means, connected to receive said rpm differential signal, for supplying a damping signal to said fuel metering means upon the occurrence of predetermined characteristics of said rpm differential signal indicating bounce-induced oscillations in the engine speed, wherein said fuel metering means enriches or leans said fuel in said response to said damping signal.