US 11,982,070 B2
System and method for heating the hydraulic fluid of an electric work vehicle
Christopher Alan Andreuccetti, Burlington, IA (US); Joseph R. Shoemaker, West Burlington, IA (US); and Nicholas Chibucos, Burlington, IA (US)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Appl. No. 17/907,947
Filed by CNH Industrial America LLC, New Holland, PA (US)
PCT Filed Feb. 26, 2021, PCT No. PCT/US2021/019830
§ 371(c)(1), (2) Date Aug. 29, 2022,
PCT Pub. No. WO2021/173940, PCT Pub. Date Sep. 2, 2021.
Claims priority of provisional application 62/982,292, filed on Feb. 27, 2020.
Prior Publication US 2023/0151584 A1, May 18, 2023
Int. Cl. E02F 9/20 (2006.01); E02F 9/22 (2006.01); F15B 19/00 (2006.01); F15B 21/0427 (2019.01); E02F 3/96 (2006.01)
CPC E02F 9/2095 (2013.01) [E02F 9/226 (2013.01); F15B 19/00 (2013.01); F15B 21/0427 (2019.01); E02F 3/964 (2013.01); F15B 2211/20515 (2013.01); F15B 2211/62 (2013.01); F15B 2211/6343 (2013.01); F15B 2211/66 (2013.01); F15B 2211/6651 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric work vehicle, comprising:
a chassis;
an electric motor supported on the chassis, the electric motor configured to propel the electric work vehicle in a direction of travel;
an implement adjustably coupled to the chassis;
a hydraulic actuator configured to adjust a position of the implement relative to the chassis;
a pump configured to supply hydraulic fluid to the hydraulic actuator, the pump being operable within an operating speed range extending between a minimum operating speed value and a maximum operating speed value;
a sensor configured to capture data indicative of a temperature of the hydraulic fluid; and
a controller communicatively coupled to the sensor, the controller configured to:
monitor the temperature of the hydraulic fluid when above a predetermined minimum fluid temperature as the pump is operating within the operating speed range; and
adjust the operating speed range of the pump by increasing at least one of the minimum operating speed value or the maximum operating speed value when the monitored temperature of the hydraulic fluid falls below the predetermined minimum fluid temperature.