PWM control of a lifter oil manifold assembly solenoid

Details PWM control of a lifter oil manifold assembly solenoid PWM control of a lifter oil manifold assembly solenoid

2006-08-08

2006-08-08

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

C123S090150

Reexamination Certificate

active

07086374

ABSTRACT:
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.

REFERENCES:
patent: 4227505 (1980-10-01), Larson et al.
patent: 6688275 (2004-02-01), Shindou et al.

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