Hybrid drive snowmobile and hybridization kit for a snowmobile
AssigneeEfesto S.A.R.L.
InventorLuca Morfino
Life of this patent
Estimating the term…
Abstract
Hybrid drive snowmobile comprising an IC engine, a variable speed drive comprising a first pulley connected to a drive shaft of the IC engine, a second pulley and a belt coupled to the first and second pulleys, an intermediate shaft-connected to the second pulley of the variable speed drive, an output shaft connected to the intermediate shaft by a transmission and a drive wheel of a motor track of the snowmobile connected to the output shaft and a reversible electrical machine connected to the intermediate shaft.
Claims19
Hybrid drive snowmobile comprising an IC engine (3), a variable speed drive (4) comprising a first pulley (9) permanently connected to a drive shaft (8) of the IC engine (3) in a rotationally fixed manner, a second pulley (10) and a belt (11) coupled to the first and second pulleys (9, 10), an intermediate shaft (20) permanently connected to the second pulley (10) of the variable speed drive (4) in a rotationally fixed manner, an output shaft (30) connected to the intermediate shaft (20) by a transmission (21, 22, 23) and a drive wheel (31) of a motor track (7) of the snowmobile (1) connected to the output shaft (30), an electrical machine (5) rotationally coupled to the intermediate shaft (20) and selectively operable as a motor and as a regenerative brake, wherein the electrical machine (5) comprises a rotor (35) rigidly coupled to the intermediate shaft (20) and wherein the first pulley (9) of the variable speed drive (4) includes two half-pulleys (12, 13) whose relative distance in an axial direction is such that the IC engine (3) is decoupled from the electrical machine (5) when the IC engine (3) is off.
Hybridization kit for a snowmobile, the snowmobile comprising an IC engine (3), a variable speed drive (4) comprising a first pulley (9) connected to a drive shaft (8) of the IC engine (3), a second pulley (10) and a belt (11) coupled to the first and second pulleys (9, 10), an intermediate shaft (20) connected to the second pulley (10) of the variable speed drive (4), an output shaft (30) connected to the intermediate shaft (20) by a transmission (21, 22, 23) and a drive wheel (31) of a motor track (7) of the snowmobile (1) connected to the output shaft (30), the kit comprising:
- an electrical machine (5) configured to be rotationally coupled to the intermediate shaft (20) of the snowmobile, a control unit (40) configured to vary both a driving and a braking torque of the electrical machine (5) in response to input signals received from a position sensor (41) of the snowmobile (1), a rearing angle sensor (42), an angular velocity sensor (43) of the motor track (7), and an acceleration sensor (44) of the snowmobile (1);
- a battery pack (46);
- and
- an inverter (45).
Hybrid drive snowmobile comprising an IC engine (3), a variable speed drive (4) comprising a first pulley (9) connected to a drive shaft (8) of the IC engine (3), a second pulley (10) and a belt (11) coupled to the first and second pulleys (9, 10), an intermediate shaft (20) connected to the second pulley (10) of the variable speed drive (4), an output shaft (30) connected to the intermediate shaft (20) by a transmission (21, 22, 23) and a drive wheel (31) of a motor track (7) of the snowmobile (1) connected to the output shaft (30), an electrical machine (5) rotationally coupled to the intermediate shaft (20) and selectively operable as a motor and as a regenerative brake, and a decoupler assembly configured to selectively connect the electrical machine (5) to the intermediate shaft (20).
Dependencies are inferred from the claim text.