摘要:
A road vehicle (1) with an electric drive having: a heat engine (5) provided with a carrier shaft (6); a gearbox (10); at least one pump (25, 26) actuated by a carrier shaft (27); at least a reversible electric machine (8); a first mechanical transmission (28), which transmits the motion from the drive shaft (6) of the heat engine (5) to the carrier shaft (27) and is provided with a first freewheel (32); a second mechanical transmission (30), which transmits the motion from the shaft (23) of the electric machine (8) to the carrier shaft (27) and is provided with a second freewheel (33); and a third mechanical transmission (31), which is arranged in parallel to the second mechanical transmission (30), transmits the motion from the shaft (23) of the electric machine (8) to the carrier shaft (27), is provided with a third freewheel (34) and reverses the direction of motion with respect to the second mechanical transmission (30).
摘要:
An automatic manual transmission (7) for a hybrid vehicle (1) provided with an internal combustion engine (5) and with an electrical machine (12); the automatic manual transmission (7) has: a servo-assisted mechanical gearbox (9); a differential gear (25), which transmits the motion to driving wheels (3); a clutch (11); a servo-assisted drive device (18) with a variable gear ratio; an auxiliary shaft (29), along which the electrical machine (12) is mounted; a drive shaft (24) connecting the differential gear (25) to the servo-assisted drive device (18), which is arranged immediately downstream of the gearbox (9) and directly receives the motion from a secondary shaft (15) of the gearbox (8); a first connectable/disconnectable and servo-assisted connection device (30), which is suited to connect the auxiliary shaft (29) to the drive shaft (24); and a second connectable/disconnectable and servo-assisted connection device (34), which is suited to connect the auxiliary shaft (29) to the secondary shaft (15) of the gearbox (9).
摘要:
A four-wheel-drive vehicle transmission (1) having a input shaft (8) rotated by the vehicle engine (2) about a first axis (A); a front output shaft (10) connected to the front axle (3) of the vehicle; a rear output shaft (12) connected to the rear axle (4) a tubular shaft (14) mounted alongside the input shaft (8) to rotate about a second axis (D) parallel to the first axis (A); a number of groups of gears (15, 16) for selectively connecting the tubular shaft (14) mechanically to the input shaft (8); a first countershaft (17) mounted for rotation about the second axis (D) inside the tubular shaft (14); a second countershaft (18) mounted for rotation about the second axis (D) opposite the first countershaft (17); a planetary gear train (19) for mechanically connecting the tubular shaft (14) to the first (17) and second (18) countershaft; and a first (25) and a second (26) cascade gear set for mechanically connecting the second countershaft (18) to the rear output shaft (12), and the first countershaft (17) to the front output shaft respectively (10).
摘要:
A steering system (4) for a road vehicle (1); the steering system (4) comprises: a steering wheel (6) provided with an outer ring (15), which is mounted so as to rotate around a rotation axis (13) and has no connection to steering wheels (2); a position sensor (8), which is designed to detect the angular position of the outer ring (15) of the steering wheel (6) around the rotation axis (13); and a mechanical limit stop device (30), which is coupled to the outer ring (15) of the steering wheel (6) and limits, in both directions, the maximum angular width of the rotation of the steering wheel (6) around the rotation axis (13), so that the steering wheel (6) can make, on the whole, a rotation around the rotation axis (13) that is greater than 360°.
摘要:
An automatic manual transmission (7) for a hybrid vehicle (1) provided with an internal combustion engine (5) and with an electrical machine (12); the automatic manual transmission (7) has: a servo-assisted mechanical gearbox (9); a differential gear (25), which transmits the motion to driving wheels (3); a clutch (11); a servo-assisted drive device (18) with a variable gear ratio; an auxiliary shaft (29), along which the electrical machine (12) is mounted; a drive shaft (24) connecting the differential gear (25) to the servo-assisted drive device (18), which is arranged immediately downstream of the gearbox (9) and directly receives the motion from a secondary shaft (15) of the gearbox (8); a first connectable/disconnectable and servo-assisted connection device (30), which is suited to connect the auxiliary shaft (29) to the drive shaft (24); and a second connectable/disconnectable and servo-assisted connection device (34), which is suited to connect the auxiliary shaft (29) to the secondary shaft (15) of the gearbox (9).
摘要:
A motor vehicle (1) with insertable four-wheel drive, which is provided with an engine (4) having a crankshaft (5), a pair of main driving wheels (3) constantly connected to the crankshaft (5) by interposition of a gearbox (10) provided with a first clutch (8), and a pair of secondary driving wheels (2), which may be connected to the crankshaft (5) by means of an insertable transmission system (15); the insertable transmission system (15) presents a second clutch (17), which is connected on one end with fixed transmission ratio to the crankshaft (5) upstream of the gearbox (10) and on the other end with fixed transmission ratio to the secondary driving wheels (2); the percentage (%Ca) of motive torque to be transmitted to the secondary driving wheels (2) by means of the second clutch (17) is determined according to dynamic parameters- (Vx, Ax, Ay) of the motor vehicle (1) detected by respective sensors (25).
摘要:
An optionally connectable four-wheel drive vehicle (1) having: an- engine (4) having a drive shaft (5); two main drive wheels (3); a main power train (7) permanently connecting the drive shaft (5) to the main drive wheels (3), and in turn having a transmission (10) and a main differential (11); two normally driven secondary drive wheels (2); and an optionally connectable secondary power train (15) for also connecting the drive shaft (5) to the secondary drive wheels (2), and in turn having a gear drive (17) with at least two different, alternatively selectable velocity ratios, and at least one secondary clutch (16), which is connected on one side to the drive shaft (5) upstream from the transmission (10), and on the other side to the secondary drive wheels (2).
摘要:
An automotive oil-bath clutch has at least one disk (2) mounted inside a housing (3) to rotate about a longitudinal axis (4); the housing (3) being bounded by a lateral wall (6) extending about the disk (2).
摘要:
An electric power system (20) of a vehicle (1) with electric propulsion having: an electric machine (8); a storage system (16) provided with two chemical battery packs (17, 18) electrically separated from each other; an electronic DC/AC power converter (14), which exchanges electric energy with the storage system (16) and controls the electric machine (8); a pair of electronic DC/DC power converters (21, 22), each of which increases the voltage and has a low-voltage side, which is electrically connected only and exclusively to a corresponding chemical battery (17, 18), and a high-voltage side, which is connected to the electronic DC/AC power converter (14) in parallel to the high-voltage side of the other electronic DC/DC power converter (22, 21); and a common container (31), which houses the storage system (16) and the electronic power converters (14, 21, 22) therein.
摘要:
An optionally connectable four-wheel drive vehicle (1) having: an- engine (4) having a drive shaft (5); two main drive wheels (3); a main power train (7) permanently connecting the drive shaft (5) to the main drive wheels (3), and in turn having a transmission (10) and a main differential (11); two normally driven secondary drive wheels (2); and an optionally connectable secondary power train (15) for also connecting the drive shaft (5) to the secondary drive wheels (2), and in turn having a gear drive (17) with at least two different, alternatively selectable velocity ratios, and at least one secondary clutch (16), which is connected on one side to the drive shaft (5) upstream from the transmission (10), and on the other side to the secondary drive wheels (2).