ELECTROHYDRAULIC HYBRID WORK VEHICLE
First Claim
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1. A work vehicle (1) comprising an internal combustion engine (10);
- an electric machine (18) for driving the vehicle;
at least one hydraulic circuit comprising a number of hydraulic actuators (7, 8) and a hydraulic machine (12) for operating at least said hydraulic actuators (8);
a reversible electric machine (11);
a battery (19) rechargeable by said reversible electric machine (11) to permit operation of said electric machine (18) and said hydraulic machine (12) controlled by said reversible electric machine (11);
a drive (15) for connecting said internal combustion engine (10) mechanically to said reversible electric machine (11) and to said hydraulic machine (12), so said reversible electric machine and said hydraulic machine are in parallel with respect to said internal combustion engine (10); and
a clutch (14) for disconnecting said internal combustion engine (10) from said drive (15) to allow said reversible electric machine (11) to selectively power said hydraulic machine (12) when said internal combustion engine (10) is disconnected from said drive (15);
said vehicle also comprising;
a first electric actuator (40) integrated in one block (45, 46) with said reversible electric machine (11);
a second electric actuator (42) integrated in one block (50) with said electric machine (18); and
an electric power controller (20) for controlling electric power exchange between said first and second electric actuator (40, 42) and said battery (19);
said electric power controller (20), said first and second electric actuator (40, 42) and said battery (19) being connected by direct-current electric lines.
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Accused Products
Abstract
A hybrid work vehicle having a direct-current electric power bus for connecting at least an electric power controller, an electric machine for driving the vehicle, a reversible electric machine, and a battery.
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Citations
13 Claims
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1. A work vehicle (1) comprising an internal combustion engine (10);
- an electric machine (18) for driving the vehicle;
at least one hydraulic circuit comprising a number of hydraulic actuators (7, 8) and a hydraulic machine (12) for operating at least said hydraulic actuators (8);
a reversible electric machine (11);
a battery (19) rechargeable by said reversible electric machine (11) to permit operation of said electric machine (18) and said hydraulic machine (12) controlled by said reversible electric machine (11);
a drive (15) for connecting said internal combustion engine (10) mechanically to said reversible electric machine (11) and to said hydraulic machine (12), so said reversible electric machine and said hydraulic machine are in parallel with respect to said internal combustion engine (10); and
a clutch (14) for disconnecting said internal combustion engine (10) from said drive (15) to allow said reversible electric machine (11) to selectively power said hydraulic machine (12) when said internal combustion engine (10) is disconnected from said drive (15);
said vehicle also comprising;a first electric actuator (40) integrated in one block (45, 46) with said reversible electric machine (11); a second electric actuator (42) integrated in one block (50) with said electric machine (18); and an electric power controller (20) for controlling electric power exchange between said first and second electric actuator (40, 42) and said battery (19); said electric power controller (20), said first and second electric actuator (40, 42) and said battery (19) being connected by direct-current electric lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- an electric machine (18) for driving the vehicle;
Specification