US 2026/0152923 A1 · DRIVETRAIN FOR HYBRID VEHICLE WORK VEHICLE

Abstract

A hybrid drivetrain for a work vehicle includes an internal combustion engine a hydraulic pump, electric machine, and an overrunning clutch. The work vehicle can include hydraulic actuators and work tools powered by the hydraulic pump and electric drive motors powered by the electric machine. The overrunning clutch couples the engine, the pump, and the electric machine so that the engine can drive the electric machine and pump in a first mode, the engine and the electric machine can simultaneously drive the hydraulic pump in a second mode, and the electric machine can drive the hydraulic pump while overrunning the clutch in a third mode. A torsional detuner can couple the overrunning clutch to a flywheel of the engine.

Claims20

Dependent claims

A work vehicle drivetrain, comprising:

an internal combustion engine having an engine output;
a hydraulic pump having a pump input;
an electric machine having an electric machine shaft;
and
an overrunning clutch that couples the engine output, the pump input, and the electric machine shaft;
wherein the internal combustion engine can drive the electric machine and pump in a first mode, the internal combustion engine and the electric machine can simultaneously drive the hydraulic pump in a second mode, and the electric machine can drive the hydraulic pump while overrunning the clutch in a third mode.

3 more elements

A work vehicle comprising:

a frame;
a drivetrain mounted on the frame, the drivetrain including
an internal combustion engine having an engine output,
a hydraulic pump having a pump input,
an electric machine having an electric machine shaft, and
an overrunning clutch coupling the engine output the pump input and the electric machine shaft;
a plurality of ground engaging units for supporting the frame from a ground surface, at least one of the ground engaging units being powered by an electric drive motor to drive the vehicle;
a work tool mechanically coupled to the frame;
wherein the internal combustion engine can drive the electric machine and pump in a first mode, the internal combustion engine and the electric machine can simultaneously drive the hydraulic pump in a second mode, and the electric machine can drive the hydraulic pump while overrunning the clutch in a third mode.

6 more elements

Dependencies are inferred from the claim text.

Drivetrain for hybrid vehicle work vehicle

Life of this patent

Drivetrain for hybrid vehicle work vehicle

Life of this patent

Abstract

Claims20