US 12,135,049 B2
Intelligent filtration for electric-hydraulic work vehicles
Michael J. Cliff, Coffeyville, KS (US)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on Mar. 30, 2021, as Appl. No. 17/217,018.
Prior Publication US 2022/0316502 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F15B 21/041 (2019.01); B01D 29/52 (2006.01)
CPC F15B 21/041 (2013.01) [B01D 29/52 (2013.01); F15B 2211/615 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An intelligent work vehicle filtration system onboard an electric-hydraulic (E/H) work vehicle, the intelligent work vehicle filtration system comprising:
an electric drive subsystem containing a battery pack;
a hydraulic subsystem, comprising:
a fine filter device having a first filter efficiency;
a coarse filter device having a second filter efficiency less than the first filter efficiency;
a hydraulic circuit in which the fine filter device and the coarse filter device are positioned; and
a hydraulic pump controllable to circulate hydraulic fluid about the hydraulic circuit; and
a controller architecture coupled to the electric drive subsystem, the controller architecture having processing architecture configured to execute control logic to determine that the electric drive subsystem is electrically coupled to an external power supply and selectively place the intelligent work vehicle filtration system in an externally-powered filter mode in which hydraulic flow is directed through the fine filter device, while bypassing the coarse filter device, when the electric drive subsystem is electrically coupled to the external power supply utilized to charge the battery pack.