摘要:
A method of controlling the engagement of an accelerating or decelerating auxiliary propulsion system with a running primary propulsion system upon the occurence of synchronous speed and alignment of engaging elements in a connecting device by rotating the primary system at a substantially constant speed, accelerating or decelerating the speed of the auxiliary system toward that of the primary system, sensing the impending occurence of synchronous speed of the two systems and the occurence of alignment of the engaging elements and automatically engaging driving elements of the system in response to the occurence of synchronous speed and alignment. Apparatus suitable for performing the foregoing method comprises a primary and an auxiliary engine each connected to one half of a clutch or of a coupling which are engaged at the time synchronous speed and alignment of the clutch or coupling halves is achieved to thereby connect the engines for simultaneous operation. Sensing of impending synchronization is achieved by driving the first input of a planetary differential from the primary clutch or coupling half, driving the second input from the auxiliary clutch or coupling half in the opposite direction of rotation as the first input, and monitoring the speed of the planetary output; as this output approaches zero speed, a control means is energized for initiating engagement of the clutch or coupling halves so that actual engagement occurs at synchronous speed and exact mechanical alignment of the engaging elements. The control means is preferably arranged to control the acceleration or deceleration of the auxiliary engine prior to engagement of the engaging elements so that the engines approach synchronization very slowly.
摘要:
A method of searching for a sync start in an automated manual transmission, may include a slip preparing step of operating, in a parked position, a sleeve and a clutch restrained so as not to rotate into a slip state, an actuator operating step of moving the sleeve toward a clutch gear from a neutral position, a clutch speed determination step of determining whether or not a speed of rotation of the clutch has decreased by the actuator operating step, a stop determination step of determining whether or not a movement of the sleeve that was driven by the actuator operating step has stopped, and a first position determination step of determining a point where the clutch speed determination step determines that the speed of the rotation of the clutch has decreased and the stop determination step determines that the movement of the sleeve has stopped as the sync start.
摘要:
A method for controlling a motor vehicle drive train including a combustion engine, an electric machine and a transmission, which are coupled by a summation gear system, having two input and one output elements, and a clutch. One input element is coupled to the crankshaft of the combustion engine, the other input element is coupled to the rotor of the electric machine and the output element is coupled to the input shaft of the transmission and the clutch is arranged between two elements of the summation gear system, such that when the clutch is disengaged a speed difference between the combustion engine and the transmission input shaft is synchronized by the electric machine and, if necessary, by a controlled engagement of the clutch. To improve synchronization, at the beginning of the synchronization the clutch is brought to its contact point before the engagement of the bridging clutch.
摘要:
Two clutches are disposed between a driving shaft and a driven shaft, in particular a first synchronous clutch which automatically engages when the driven shaft overtakes the driving shaft and a second synchronous clutch which automatically engages when the driving shaft overtakes the driven shaft. As long as there is no external intervention the two clutches mutually protect one another against unintentional engagement. The clutch arrangement can only be put into a ready or enabled position by the action of an external force. From the ready position, the paired synchronous clutches can effect a torque transmitting connection between a driving shaft and a driven shaft when their rotational speeds are synchronous.
摘要:
A steady voltage is generated which is proportional to the quotient of the rotational rates of the two members for which it is desired to determine the slip rate. The apparatus may be used to effect coupling of the two members when the slip rate falls to or very near zero, particularly in a motor vehicle transmission. The control voltage is generated by first generating, through electrical sensors and circuits, a train of pulses having a repetition rate proportional to the rotational rate of one of the members and having a pulse width inversely proportional to the rotational rate of the other of the members, and then integrating the pulse train to provide a steady control voltage.
摘要:
When a drive range of a transmission is selected from a neutral range at a high engine racing speed, a racing start signal is produced. In response to the racing start signal, the electromagnetic clutch is engaged at a higher engaging rate than an ordinary engaging speed.
摘要:
An electronic control system for a clutch located between an engine and a variable ratio transmission includes means to detect the speeds of the input and output clutch shafts, and to control the engine speed before and during gear shifts so that the clutch will engage at synchronous clutch shaft speeds. A special preshift predictive computer means is used in combination with special digital logic circuitry to insure reliable and optimum operation.
摘要:
A synchromesh mechanism is activated when cancelling a disconnection state, and, when an electronic control unit determines that a rotation speed of an input shaft has been synchronized with a rotation speed of a first ring gear, a second intermeshing clutch is engaged, and then a first intermeshing clutch is engaged. For this reason, in the first intermeshing clutch, a decrease in the rotation speed of the first ring gear is suppressed as a result of engagement of the second intermeshing clutch. This suppresses out of synchronization between the rotation speed of the first ring gear and the rotation speed of the input shaft at the time when the first intermeshing clutch is engaged.