摘要:
A clutch control device for performing an automatic control of a clutch stroke with retaining a target engaging amount of a clutch characterized in that the clutch control device includes a first sensor for detecting an engine rotation number, a second sensor for detecting a factor for fluctuating an engine torque, a calculation means for calculating the target engaging amount based on the engine rotation number, and a correction means for correcting the target engaging amount based on the factor for fluctuating the engine torque detected by the second sensor.
摘要:
The present invention provides a clutch connection method which controls the disconnection/connection of a wet friction clutch on the basis of a duty pulse outputted from an electronic control unit. When the clutch is connected, the electronic control unit initially outputs a start duty (Dst) for largely connecting the clutch as far as the vicinity of a torque point, and, thereafter, outputs, at prescribed time intervals (Δt), a gradual connection duty (Dk) for gradually connecting the clutch, and determines a gradual connection duty value on the basis of a clutch input/output side revolution difference ΔN. Since the clutch is gradually connected while monitoring the clutch connection state, variations between connection times and connection shock, resulting from individual clutch differences or the like, can be eliminated, whereby it is possible to achieve a stable feel. Further, in control which connects the clutch in sync with completion of a transmission gear shift, a plurality of clutch connection modes (an engine plus mode, an in-shaft plus mode, and a synchro mode) are preset, and the clutch connection modes are selected in accordance with the size of clutch input-side and output-side revolution numbers upon completion of a gear shift. Clutch connection is performed which conforms to actual conditions since a clutch connection mode is selected in accordance with the size of clutch input/output side revolution numbers rather than with respect to a shift-up or a shift-down.
摘要:
A system and method of controlling the acceleration of a load driven by a gas turbine engine detects the existence of an overload condition and reduces an acceleration setpoint when such condition arises.
摘要:
Eine Drehmomentübertragungsvorrichtung zum Übertragen eines Antriebsmoments von einer ersten Welle (10) auf eine zweite Welle (12) umfasst wenigstens ein Wälzlager (36) zum koaxialen Lagern der ersten Welle (10) gegenüber der zweiten Welle (12) und ein Stellmittel (24) zum Einstellen einer Drehmomentübertragung von der ersten Welle (10) auf die zweite Welle (12), wobei das Stellmittel (24) als ein Mittel zum Variieren einer axialen Last des Wälzlagers (36) ausgebildet ist.
摘要:
In order to suppress an engagement shock of a clutch at the time of garage shifting in a continuously variable transmission including a hydraulic forward/reverse driving switching device, when an engine starts up (YES in S100), an ECU starts a timer having a predetermined time period (S102). When the garage shifting is done before the timer up (YES in S104 and NO in S106), the ECU starts waiting hydraulic pressure control in which a waiting hydraulic pressure reduced to such an extent that the forward/reverse driving switching device is not engaged is supplied to the forward/reverse driving switching device (S110), and calculates a fast fill hydraulic pressure value in accordance with a time period from the engine startup to the garage shifting operation (S114). After the timer up (YES in S116), the ECU ends the waiting hydraulic pressure control (S118) and exercises fast fill control at the calculated fast fill hydraulic pressure value (S120).
摘要:
A clutch control method, which, by means of an electronic control unit, disconnects a clutch in sync with the start of a transmission gear shift, and connects the clutch in sync with completion of the transmission gear shift, wherein, with regard to clutch connection control, a plurality of clutch connection modes are preset, and said clutch connection modes are selected in accordance with the size of a clutch input-side revolution number and output-side revolution number upon completion of a gear shift.
摘要:
The present invention provides a clutch connection method which controls the disconnection/connection of a wet friction clutch on the basis of a duty pulse outputted from an electronic control unit. When the clutch is connected, the electronic control unit initially outputs a start duty (Dst) for largely connecting the clutch as far as the vicinity of a torque point, and, thereafter, outputs, at prescribed time intervals (Δt), a gradual connection duty (Dk) for gradually connecting the clutch, and determines a gradual connection duty value on the basis of a clutch input/output side revolution difference ΔN. Since the clutch is gradually connected while monitoring the clutch connection state, variations between connection times and connection shock, resulting from individual clutch differences or the like, can be eliminated, whereby it is possible to achieve a stable feel. Further, in control which connects the clutch in sync with completion of a transmission gear shift, a plurality of clutch connection modes (an engine plus mode, an in-shaft plus mode, and a synchro mode) are preset, and the clutch connection modes are selected in accordance with the size of clutch input-side and output-side revolution numbers upon completion of a gear shift. Clutch connection is performed which conforms to actual conditions since a clutch connection mode is selected in accordance with the size of clutch input/output side revolution numbers rather than with respect to a shift-up or a shift-down.
摘要:
The present invention aims to enable the accurate learning of a true torque point in a wet friction clutch (3), prevent the clutch connection shock by absorbing the response delay upon an ordinary clutch connection control, and to successfully combine the time lag and shock. In the present invention, the value (D) itself of the duty ratio of the duty pulse output from the ECU (16) is learned as the torque point (Dm). In a power transmission device of a vehicle having a fluid coupling (2) and the wet friction clutch (3)provided in series between the engine (E) and transmission (T/M), the value (Dm) of the duty ratio at the time when the clutch input side revolution (Nt) decreases to a value lower than the engine revolution (Ne) by a prescribed revolution (Nm) during the process of gradually connecting the clutch 3 is learned as the torque point. Preferably, learning is conducted after the elapse of a prescribed waiting time (Δt1). During an ordinary clutch connection control, a prescribed start duty (Dst0) for connecting the clutch (3) broadly up to a point close to the torque point (Dtb) is initially output from the ECU (16), and a gradual duty (Dk) is output after retaining such start duty (Dst0) for a prescribed time (Δt3). Preferably, a first gradual duty (Dk1) for gradually connecting the clutch quickly is output, and a second gradual duty (Dk2) for gradually connecting the clutch slowly is output thereafter.