Abstract:
A method of gear shifting in a servo-controlled gearbox (9); the method providing for: generating an oscillation on the angular velocities (ω1, ω2) of the primary and secondary shafts (16, 17) of the gearbox (9); separating the primary shaft (16) from the secondary shaft (17) thus disengaging a first current gear (A) when the oscillation has taken the angular velocity (ω1) of the primary shaft (16) close to the angular velocity (ω1) that the primary shaft (16) must assume to engage a second next gear (B); and connecting the primary shaft (16) to the secondary shaft (17) thus engaging the second next gear (B) when the oscillation has led the angular velocity (ω2) of the secondary shaft (17) to equalise the current angular velocity (ω1) of the primary shaft (16) multiplied by the transmission ratio (τ B ) of the second next gear (B).
Abstract translation:伺服控制齿轮箱(9)中的换档方法; 该方法提供:在齿轮箱(9)的主轴和副轴(16,17)的角速度(θ1,θ2)上产生振动; 当主轴(16)的角速度(θ1)接近角速度(θ1)时,主轴(16)与副轴(17)分离,从而使第一当前齿轮(A)脱离接合 )主轴(16)必须承担与第二下一个齿轮(B)啮合; 并且当所述振动导致所述副轴(17)的角速度(θ2)使所述当前角速度(...)平衡时,将所述主轴(16)连接到所述副轴(17),从而接合所述第二下一个齿轮(B) (16)的传动比(t B B)乘以第二下一档(B)的传动比(t B B)。
Abstract:
A vehicle (1) having a central control unit (13) which supervises operation of active components of the vehicle (1), and modifies the operating parameters of the active components to modify the dynamic performance of the vehicle (1); and a selection device (15) which is located inside the passenger compartment (11) of the vehicle (1), and is operated by the driver to transmit a selected dynamic performance of the vehicle (1) to the central control unit (13); the selection device (15) includes a switch (16) fitted to the steering wheel (12) of the vehicle (1) and rotatable between at least four different positions (A, B, C, D), each corresponding to a respective dynamic performance of the vehicle (1).
Abstract:
A method and unit for shifting gear in a power-assist transmission (5); to shift gear, a series of operations are performed in sequence, and each of which must be completed prior to completion of the next operation; for each operation, a predicted time delay (DT) is estimated corresponding to the time lapse between the instant the operation is commanded and the instant the operation is actually completed; and the operations are commanded successively as a function of the predicted delay times (DT), so that an operation is commanded before the preceding operation has actually been completed.
Abstract:
A rear-drive vehicle (1) having a self-locking differential (9); a regulating device (24)for regulating the lock percentage (%L) of the differential (9); a number of sensors (16) for real-time detecting dynamic parameters of the vehicle (1); and a central control unit (15) for controlling the regulating device (24) to regulate the lock percentage (%L) of the differential (9) as a function of the dynamic parameters of the vehicle (1).