Abstract:
3A method/system for controlling upshifting in an automated mechanical transmission system (10) utilized on a vehicle preferably having an ECU (28) controlled engine brake (ECB) or inertia brake (26). When an upshift from a currently engaged ratio (GR) is required (ES>ESU/S), skip upshifts (GRTARGET=GR+N, N>1) and then single upshifts (GRTARGET=GR+1) are evaluated in sequence.
Abstract translation:用于控制在车辆上使用的自动机械传动系统(10)中的升档的3A方法/系统,优选地具有ECU(28)控制的发动机制动器(ECB)或惯性制动器(26)。 当需要从当前接合比(GR)升档时(ES> ESU / S),跳过升档(GRTARGET = GR + N,N> 1),然后依次对单个升档(GRTARGET = GR + 1)进行评估。
Abstract:
A system and method for decreasing the time required to complete a ratio change in an electronically enhanced powertrain system include independently controlling at least one engine-side retarding device and at least one transmission-side retarding device. The retarding devices are selectively actuated to increase the decay rate of the engine speed and/or transmission input shaft speed during an upshift. Engine-side retarding devices may include an engine brake or operation of various engine accessories to increase engine loading. Transmission-side retarding devices may include input shaft brake or driveline retarder.
Abstract:
A control system/method to initiate upshifts in an automated mechanical transmission system (12). Upshifts are normally initiated on the basis of sensed throttle position (THL) or demand. In certain situation upshifts are initiated on the basis of sensed or calculated engine torque.
Abstract:
A method/system for controlling upshifting in an automated mechanical transmission system (10) utilized on a vehicle preferably having an ECU (28) controlled engine brake (46). When an upshift from a currently engaged ratio (GR) is required (ES>ESU/S), skip upshifts (GRTARGET=GR+N, N>1) and then single upshifts (GRTARGET=GR+1) are evaluated in sequence.
Abstract translation:一种用于控制在车辆上使用的自动机械传动系统(10)中的升档的方法/系统,优选地具有控制发动机制动器(46)的ECU(28)。 当需要从当前接合比率(GR)升档时(ES> E + E,acu S + EE U / S),跳跃升档(GRTARGET = GR + N,N> 1),然后单升档(GRTARGET = GR +1)按顺序进行评估。
Abstract:
A method/system for controlling an automated mechanical transmission system (10) utilized on a vehicle. To protect from driveline damage due to clutch "popping," upon sensing vehicle launch conditions (clutch (16) not engaged, transmission (14) engaged (THL>REF.sub.THL and OS
Abstract:
A control system for controlling jaw clutch (88) engagement for completing upshifts. The synchronous window ((OS*GR.sub.T).+-.offset) for commanding jaw clutch engagement is increased upon sensing relative great vehicle deceleration (dOS/dt REF.sub.2).
Abstract:
A pressurized fluid-operated, three-position shift actuator piston assembly (12) and associated control system (10) are provided. The system requires only a single controlled source of pressurized fluid (A) to provide movement to and retention in a selected one of three axially displaced positions (D, N, OD).
Abstract:
A robust engine fueling control is provided for assuring neutral attainment in a vehicular automated mechanical transmission system (10) having a manually controlled master clutch (16). Upon sensing a requirement for a shift into transmission neutral, the disengaging jaw clutch members (134A/142A) are constantly urged into a disengaged position, fuel is caused to decrease to idle (302), and then fuel is blipped by increasingly larger amounts (304, 306, 308) until neutral is sensed.
Abstract:
A control method/system for controlling engagement of a target gear ratio (GR.sub.T)in a vehicular automated mechanical transmission system (10) is provided. The control causes engine speed (ES) to be alternately greater than and then less than synchronous engine speed (ES=IS=OS*GR.sub.T) to cause torque reversals across the engaging positive jaw clutch associated with the target gear ratio to minimize or prevent partial engagement caused by torque lock conditions.
Abstract translation:提供了一种用于控制车辆自动机械传动系统(10)中的目标齿轮比(GRT)的接合的控制方法/系统。 该控制使发动机转速(ES)交替地大于然后小于同步发动机转速(ES = IS = OS * GRT),以使得与目标齿轮比相关联的接合正齿爪离合器的扭矩反转最小化或防止部分 扭矩锁定条件引起的啮合。
Abstract:
A control system/method for determining vehicular gross combined weight (GCW) is provided. GCW is determined immediately after upshifts of a transmission (10) and requires only input signals indicative of engine or driveline torque (DL), vehicle acceleration (dOS/dt) and currently engaged gear ratio (GR).