PWM control of a lifter oil manifold assembly solenoid

申请公布号：US2005257768(A1)

申请号：US20040851034

申请日期：2004.05.21

申请公布日期：2005.11.24

申请人：

MCDONALD MIKE M;ALBERTSON WILLIAM C

发明人：MCDONALD MIKE M.;ALBERTSON WILLIAM C.

分类号：F01L1/34;F01L13/00;F02D13/06;F02D17/02;F02N99/00;(IPC1-7):F01L1/34;F02N17/00

主分类号：F01L1/34

摘要：A solenoid driver generates a current signal to drive a solenoid of a lifter oil manifold assembly (LOMA) to switch a displacement on demand engine between activated and deactivated modes. The solenoid driver includes a current module that generates the current signal based on a duty cycle signal and a switching module that regulates the duty cycle signal based on the activated and deactivated modes. The duty cycle signal is 100% for a first period after the engine switches to the deactivated mode and is variable for a second period after the first period.

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