摘要:
The invention relates to a method for open-loop and/or closed-loop controlling of a wet clutch of a motor vehicle, in particular a dual clutch, wherein a specific clutch torque (MK) is adjusted with the aid of a control device (1), and a specific clutch pressure (PK) is applied to the clutch to adjust this specific clutch torque (MK) and the clutch is operated with a specific clutch slip (nS), wherein the functional dependency of the clutch torque (MK) on the clutch pressure (PK) is defined by at least one clutch characteristic curve (KK) for a specific range, in particular stored in the control device, and wherein the clutch characteristic curve (KK) also inherently has a specific friction value or the stored clutch characteristic curve (KK) is based on an inherent friction value. The driving comfort is improved in that initially a friction value correction factor (RKF) is defined and/or determined according to a desired clutch torque (MKSoll) and/or according to the clutch slip (nS) and/or according to the clutch temperature (T) and/or according to the state of aging of the clutch, a corrected clutch torque (MKSoll-Korrektur) is then determined and/or calculated with the aid of the friction value correction factor (RKF) based on the clutch characteristic curve (KK), the clutch pressure (PKSoll-Korrektur) associated with this corrected clutch torque (MKSoll-Korrektur) is then determined based on the clutch characteristic curve (KK), wherein the corrected clutch pressure (PKSoll-Korrektur) determined in this way is then also adjusted to the clutch.
摘要:
The present invention relates to a hydraulic-oil control device (60) that performs hydraulic-oil supply control in a dual clutch device (20) that has a first clutch (21) and a second clutch (22), the hydraulic-oil control device (60) including a first linear solenoid valve (65) that adjusts hydraulic oil having a line pressure for a first hydraulic chamber (26A) and that supplies the hydraulic oil thereto, a second linear solenoid valve (66) that adjusts hydraulic oil having a line pressure for a second hydraulic chamber (29A) and that supplies the hydraulic oil thereto, a shuttle valve (67) that outputs the hydraulic oil having a higher pressure between the pressure of the hydraulic oil in the first hydraulic chamber (26A) and the pressure of the hydraulic oil in the second hydraulic chamber (29A), and a switch valve (68) that adjusts the amount of hydraulic oil to be supplied to a first space (21A) and a second space (22A), according to the pressure of the hydraulic oil output from the shuttle valve (67).
摘要:
The invention relates to an actuator (2) for a vehicle transmission system (3), comprising: an electric machine (6) comprising an armature and an inductor, the machine (6) being such that the ratio of a magnitude representing the electromagnetic torque (T) exerted on the machine (6) to a magnitude representing the current (I) flowing through the electric circuit of the armature involves a constant (K), wherein (K) is the torque constant of the electric machine (6); a static converter (31) comprising a plurality of switching cells (41), the static converter (31) being arranged so as to connect the electric circuit of the armature electrically to an electric power source; and a system (32) for controlling the switching cells (41) of the static converter (31), said system being configured to apply a first control mode to the switching cells (41) so that the torque constant (K) of the electric machine (6) adopts a first value, and to apply a second control mode to the switching cells (41) so that the torque constant (K) of the electric machine varies continuously within a second range of values.
摘要:
The invention relates to a method for determining the torque (Tc 1 , Tc 2 ) transmitted by each clutch in a transmission chain of a motor vehicle with a double clutch, wherein said method comprises providing a first digital model (27) simulating the double mass flywheel by means of a first torsionally deformable system and determining the accumulated torque (Tc 1 + Tc 2 ) transmitted by one flywheel to the double clutch, providing a second digital model (28) simulating the assembly made up of an output shaft (16) of a gearbox (5), a differential (12) and drive wheel shafts, and determining the output torque (Tc 1 /q 1 + Tc 2 /q 2 ) of the gearbox, determining the torques transmitted by the flywheel (Tc 1 , Tc 2 ) engaging with the input shafts of the gearbox.
摘要:
An energy recovery system having an energy source/sink and an energy storage system is disclosed. The energy recovery system includes a frictional engagement device adapted for the transmission of energy between an energy source/sink and the energy storage system, a cooling fluid supply for the frictional engagement device, an element for controlling the power flow through the frictional engagement device, an element for varying the flow of cooling fluid from the fluid supply to the frictional engagement device whereby the flow of fluid to the frictional engagement device is made to increase when the magnitude of power through the frictional engagement device is made to increase.
摘要:
The objective of the present invention is to suppress engine startup shock and improve fuel consumption and drivability when motor driving is performed with a second clutch engaged, and the engine is started by performing a control to engage a first clutch. When the engine (14) is started and the electric motor increased torque Tmup is large, it is easier for a large deviation to occur between the electric motor increased torque Tmup and the actual KO transmission torque Tk than when the electric motor increased torque is smaller, and the engine startup shock generated by that deviation also is larger, so the engine startup shock is suppressed by increasing the L/U slip amount Ns. Meanwhile, when the electric motor increased torque Tmup is relatively small, it is difficult for a large deviation to occur between the electric motor increased torque Tmup and the actual KO transmission torque Tk, and the engine startup shock is not that large even if a deviation occurs, so the L/U slip amount Ns is set relatively small, thus ensuring good fuel consumption and drivability.
摘要:
A starting clutch control system applied to a vehicle in which an engine torque is inputted to a torque converter having a pump impeller and a turbine, and outputted to driving wheels through a clutch. the control system is configured to stop the engine while disengaging the clutch upon satisfaction of a predetermined condition when the vehicle is running, and to restart the stopping engine while engaging the clutch upon satisfaction of a predetermined restarting condition. According to the present invention, the control system is configured: to estimate a turbine torque of the torque converter based on an engine speed, and a capacity coefficient and a torque ratio of the torque converter, when the engine is required to increase a power to be restarted; to increase a torque transmitting capacity of the clutch in accordance with the estimated turbine torque; to estimate the turbine torque based on an air intake of the engine and an engine speed after a completion of an engagement of the clutch; and to control the torque transmitting capacity of the clutch in accordance with the estimated turbine torque.
摘要:
The invention relates to a hydraulic actuation device (10) for a motor vehicle friction clutch (12), comprising: a manually actuatable master cylinder (16), the actuation of which is sensed by a sensor (14) and which has a master pressure chamber (18) which, in a rest position, is fluidically connected to a reservoir (22) by means of a replenishing region (20); a slave arrangement (26) comprising a slave pressure chamber (24) and having a slave cylinder (28) that is functionally connected to said motor vehicle friction clutch; a pressure line (30) which connects the master pressure chamber to the slave pressure chamber and in which an electrically actuatable valve arrangement (38) is connected; a motor pump (32) that is connected, on the input side, to the reservoir and can be connected, on the output side, to the pressure line; and a control unit (40) to which the electrical parts are connected (sensor, valve arrangement, motor pump). The valve arrangement comprises, connected in parallel, an electrically actuatable proportional valve (42) and a first check valve (44) which blocks in the direction of the master pressure chamber, and the motor pump is connected to said pressure line between the valve arrangement and the slave pressure chamber by means of a second check valve (46) that blocks in the direction of the motor pump.