摘要:
A vehicular shift control device is provided that controls the input rotational speed of a geared transmission by adjusting the rotational speed of a drive source at downshift of the geared transmission. The greater the deceleration of the vehicle, the smaller is set the change gradient of the input rotational speed of the geared transmission. Therefore, even if the decrease rate of the post-shifting synchronization rotational speed is great, the incident angle ³ of the input rotational speed of the geared transmission relative to the post-shifting synchronization rotational speed is maintained as a large angle. Even when the deceleration of the vehicle during downshift is great, the downshift is smoothly executed without producing an excessive synchronization shock.
摘要:
A method for controlling a powertrain system including a transmission (10) mechanically coupled to an engine (14) and an electric machine (56,72) to transfer power to an output member (64), the transmission (10) selectively operative in one of a plurality of operating range states includes monitoring operator inputs to an accelerator pedal, determining a preferred operating point of the powertrain based upon the operator inputs, determining a preferred operating range state of the transmission (10) based upon the preferred operating point, determining lead control signals for the engine (14) and the transmission (10) based upon the preferred operating point and the preferred operating range state of the transmission (10), determining immediate control signals for the electric machine (56,72) and the transmission, wherein the immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of the engine (14) and the electric machine (56,72).
摘要:
The invention relates to a method and a control device for adjusting a speed of a shaft in a gear selector box. The invention is based upon a method for adjusting a speed of a shaft in a gear selector box (10) on a motor vehicle. The required torque is supplied by a drive engine (35) and transmitted by an automatic clutch (12). The aim is to disclose a method by means of which a precise and rapid adjustment of the speed of the shaft within a range about a target speed is possible. Said aim is achieved by means of fixing a set value for a clutch position of the clutch (12) and thus the transmitted torque of the clutch (12), depending on a speed difference between a measured speed of the shaft and a target shaft speed.
摘要:
A powertrain system includes a transmission device (10) operative to transfer power between an input member (12) and a plurality of torque machines (56,72) and an output member (64). The torque machines (56,72) are connected to an energy storage device (74) and the transmission device (10) is operative in one of a plurality of operating range states. A method for controlling the powertrain system includes monitoring available power from the energy storage device (74), determining system constraints, determining constraints on an output torque to the output member (64) based upon the system constraints and the available power from the energy storage device (74), determining an operator torque request, determining an output torque command based upon the constraints on the output torque and the operator torque request, and determining preferred torque commands for each of the torque machines (56,72) based upon the output torque command.
摘要:
A method for controlling a hybrid powertrain system based upon determined inertial effects for a continuously variable operating range state includes monitoring an operator torque request and a rotational speed of the output member (64), determining an inertial effect on an input speed of the input member (12) for a continuously variable operating range state, and controlling motor torque outputs from the electric machines (56,72) to meet the operator torque request based upon the inertial effect on the input speed of the input member (12).
摘要:
A method for controlling a powertrain system including a transmission (10) mechanically coupled to an engine (14) and an electric machine (56,72) to transfer power to an output member (64), the transmission (10) selectively operative in one of a plurality of operating range states includes monitoring operator inputs to an accelerator pedal, determining a preferred operating point of the powertrain based upon the operator inputs, determining a preferred operating range state of the transmission (10) based upon the preferred operating point, determining lead control signals for the engine (14) and the transmission (10) based upon the preferred operating point and the preferred operating range state of the transmission (10), determining immediate control signals for the electric machine (56,72) and the transmission, wherein the immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of the engine (14) and the electric machine (56,72).
摘要:
A method for controlling a hybrid powertrain system based upon determined inertial effects for a continuously variable operating range state includes monitoring an operator torque request and a rotational speed of the output member (64), determining an inertial effect on an input speed of the input member (12) for a continuously variable operating range state, and controlling motor torque outputs from the electric machines (56,72) to meet the operator torque request based upon the inertial effect on the input speed of the input member (12).
摘要:
A method for controlling a powertrain system including a transmission (10) mechanically coupled to an engine (14) and an electric machine (56,72) to transfer power to an output member (64), the transmission (10) selectively operative in one of a plurality of operating range states includes monitoring operator inputs to an accelerator pedal, determining a preferred operating point of the powertrain based upon the operator inputs, determining a preferred operating range state of the transmission (10) based upon the preferred operating point, determining lead control signals for the engine (14) and the transmission (10) based upon the preferred operating point and the preferred operating range state of the transmission (10), determining immediate control signals for the electric machine (56,72) and the transmission, wherein the immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of the engine (14) and the electric machine (56,72).
摘要:
A control method for vehicular hybrid powertrain system includes monitoring operator inputs to an accelerator pedal (113) and a transmission gear selector (114), and determining an operator torque request based upon the operator inputs to the accelerator pedal (113) and the transmission gear selector (114). Torque output from the electric machine (56,72) is commanded based upon the operator torque request. Engine output is controlled based upon the operator torque request and the commanded torque output from the electric machine (56,72). Vehicle hood position is monitored and the engine output is controlled correlative to the operator input to the accelerator pedal (113) when the monitored position of the vehicle hood is open and the operator input to the transmission gear selector (114) is one of a PARK and a NEUTRAL position.
摘要:
A control apparatus for an automatic transmission achieves a predetermined speed-change operation from sixth speed to third speed through a pre-phase speed-change operation in which a first engagement element (B1) and a third engagement element (C1) are released and engaged respectively and through a post-phase speed-change operation in which a second engagement element (C2) and a fourth engagement element (C3) are released and engaged respectively. The control apparatus sets a target rotational acceleration of an input shaft of the transmission, and controls release of the second engagement element for a transition to the post-phase speed-change operation in accordance with the target rotational acceleration. Thus, the input speed during the transition from the pre-phase speed-change operation to the post-phase speed-change operation changes continuously, so that bluntness is prevented from being caused between the pre-stage and post-stage speed-change operations.