摘要:
The invention relates to a method for controlling the coupling, by coupling means (MC) of a vehicle (V), of a first shaft (A1) driven by a machine (ME) to a second shaft (A2) driving wheels. Said method comprises a first step of operating the machine (ME) so as to drive the first shaft (A1) at a set operating speed, followed by controlling the coupling means (MC) so that they start the coupling with the second shaft (A2); and a second step, if the coupling between the first (A1) and second (A2) shafts could not be established, of causing the machine (ME) to output a torque equal to the sum of a set torque and an additional torque which is alternately decreasing and increasing and has a variation amplitude which increases from one alternation to the next, until the coupling resumes, and then maintaining said output torque substantially constant until the end of coupling.
摘要:
The invention relates to a method for controlling the coupling, by coupling means (MC) of a vehicle (V), of a first shaft (A1) driven by a machine (ME) to a second shaft (A2) driving wheels. Said method comprises a first step of operating the machine (ME) so as to drive the first shaft (A1) at a set operating speed, followed by controlling the coupling means (MC) so that they start the coupling with the second shaft (A2); and a second step, if the coupling between the first (A1) and second (A2) shafts could not be established, of causing the machine (ME) to output a torque equal to the sum of a set torque and an additional torque which varies in a decreasing and increasing monotone manner from a selected positive or negative value, until the coupling resumes, and then maintaining said output torque substantially constant until the end of coupling.
摘要:
The invention relates to a motor vehicle gearbox including: - at least one coupling means for coupling a shaft to a gear mounted on said shaft, said coupling means being translatable; - a rotatable control cylinder for controlling translation of said coupling means; and - a means for tracking the rotation of the cylinder. Said motor vehicle gearbox is characterized in that said means for tracking the rotation of the cylinder is configured so as to ensure tracking in terms of angular position. The gearbox includes a control means for controlling rapid rotation of the cylinder in a first direction until the cylinder passes (t 2 ) a predetermined angular position, then slow rotation of the cylinder in the direction opposite the first, until it is observed (S1, θ 1 , t 3 ) that the cylinder is in said predetermined angular position, so as to initialize said angular position tracking on the basis of at least said observation (S1, θ 1 , t 3 ).
摘要:
A gearbox for a motor vehicle comprising at least one coupling means (213, 223, 233) for coupling a shaft (1000, 1001) to a pinion mounted about said shaft (1000, 1001), said coupling means (213, 223, 233) being movable in translation, a control cylinder (100) movable in rotation to control the translation of said coupling means (213, 223, 233), a means (610, 910) for monitoring the angular displacement of the cylinder (100), a means (700, 800, 900) for observing if the control cylinder (100) is at a predefined angular position (θ0) predefined to initialise said monitoring means (610, 910), and a means (600, 900) for controlling the rotation of the cylinder (100) until the fact that the cylinder (100) is in said predefined angular position (θ0) is observed, characterised in that the gearbox further comprises means (261, 262, 263, 900) for disengaging the coupling means (213, 223, 233) from the cylinder (100) during the implementation of said means (600, 900) for controlling the rotation of the cylinder (100) until the fact that the cylinder (100) is in said predefined angular position (θ0) is observed, and re-engaging said coupling means (213, 223, 233) in the cylinder (100) in order to engage a gear ratio.