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METHOD FOR CONTROLLING VIBRATIONS DURING TRANSITIONS IN A VARIABLE DISPLACEMENT ENGINE
METHOD FOR CONTROLLING VIBRATIONS DURING TRANSITIONS IN A VARIABLE DISPLACEMENT ENGINE
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机译:变排量发动机过渡过程中的振动控制方法
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摘要
Methods and systems are provided for controlling vibrations during transitions between engine operating modes in a four-cylinder engine. One method includes timing a transition in engine operation between two-cylinder, three-cylinder, and four-cylinder modes with a sequence of firing events such that successive firing events are separated by at least 120 crank angle degree intervals. Vibrations resulting from transitions may be countered by adjusting active mounts, the active mounts being adjusted in synchronization with a valvetrain switching solenoid.
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