Abstract:
PROBLEM TO BE SOLVED: To avoid shifting shock during malfunction while quickly changing over a shift stage. SOLUTION: This automobile has a motor connected to a drive shaft via a transmission. Herein, in preparation for down-shift of the transmission with the engagement of a brake B2, a line hydraulic pressure PL is put into the condition of high pressure Phi by using a three-way solenoid 106 for adjusting a pressure control valve 108 to be opened/closed and then first fill for filling oil in a pack is executed by using a linear solenoid 111 for adjusting a control valve 113 to be opened/closed, and the line hydraulic pressure PL is changed over from the condition of the high pressure Phi to the condition of low pressure Plo after finishing the first fill for the engagement of the brake B2. Thus, the preparation of the engagement of the brake B2 is quickly executed and the shifting shock is avoided because the brake B2 does not suddenly engage even when the line hydraulic pressure BL is operated directly on the brake B2 with the malfunction of the linear solenoid 111 or others. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a state detecting device for a transmission, preventing an error in detecting the state of the transmission. SOLUTION: In a running gear for outputting power from a motor via the transmission to a driving shaft, a rotating speed Nr (a thick solid line in Fig.) of the driving shaft detected by a sensor (for example, a MRE sensor) which has detecting responsiveness changed with the rotating speed of the driving shaft has a response delay from a change in an actual rotating speed Nr (a thin solid line in Fig.) of the driving shaft when the rotating speed of the driving shaft is changed, while a rotating speed Nm2 (a thin dotted line in Fig.) of a motor detected by a sensor (for example, a resolver) which has relatively high accuracy and high responsiveness is almost equal to the actual rotating speed of the motor even when the rotating speed of the motor is changed. At this time, a moderating constant which is set to correspond to a response delay time constant is used for applying moderating control to the rotating speed Nm2 of the motor to calculate a regulated rotating speed Nm2smo (a thick dotted line in Fig.) so that a gear ratio calculated by dividing it by the rotating speed Nr is used for determining the malfunction of the transmission. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a device for control of a vehicle by which larger acceleration feeling is obtained when a power mode is selected, compared with a case when a normal mode is selected, even if the requested output from an internal combustion engine becomes the same in both cases when the power mode is selected, and when the normal mode is selected.SOLUTION: The vehicle includes an MG (Motor Generator) 1 which changes in a single step, a change gear ratio when transmitting a torque of a crankshaft 16a to a rotation output shaft 6. When a gas pedal opening ACCP is assumed fully opened, and when raising the engine rotation speed NE to the target rotating speed NEtrg, HV-ECU 30 performs operation control of the MG1 so that rise velocity of the engine rotation speed NE may become larger, when the power mode is selected, compared with the case when the normal mode is selected.
Abstract:
PROBLEM TO BE SOLVED: To provide a hybrid power device suppressing the occurrence of various problems caused by an increase in the output torque of a motor when starting shift processing to a low gear position side by a transmission in such a state that the motor outputs torque to a rotary output shaft. SOLUTION: The hybrid power device 2 for a vehicle includes: a main power source 4 for transmitting torque to the rotary output shaft 6; and an MG2 for transmitting torque through the transmission 14 to the rotary output shaft 6. An HV-ECU 30 restricts the increase in output torque TM2 of the MG2 during a period since it is determined that down-shift by the transmission 14 in a state in which the MG2 outputs torque to the rotary output shaft 6 until transmission processing based on the determination is started. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress the use frequency of an ECB (Electric Control Brake) in the case of controlling the driving of a vehicle equipped with a motor connected through a transmission to the driving shaft of a vehicle. SOLUTION: The vehicle drive control system 10 is provided with a driving system 12 of a vehicle; and a vehicle drive controller 40 for controlling the operation of each of elements configuring the driving system 12 as a whole. The vehicle drive controller 40 is provided with: a drive control processing part 42 for controlling the operation of each of elements of the driving system 12; a shift instruction processing part 44 for giving a shift instruction to a transmission 22; a shift start necessary time calculation processing part 46 for calculating a shift start necessary time necessary for advancing the shift instruction for suppressing the use frequency of an ECB when an accelerator is turned off and the shift instruction is issued; and an advance instruction processing part 48 for advancing the shift instruction based on the shift start necessary time. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress gear shift shock and prevent excessive rotation of a first motor at the gear shifting of the transmission part in a vehicle driving device having an electric differential part and a transmission part. SOLUTION: Feedback control is performed to control first motor torque T M1 so that an engine rotational speed N E reaches a target engine rotational speed N E * . At the gear shifting of an automatic transmission part 20, since shifting feedback gain KP SFT for suppressing gear shift shock, which is uniformly made smaller than normal feedback gain KP NOR , is transitionally increased as a first motor rotational speed N M1 is close to an allowable limit of first motor rotational speed N M1LIM , first motor torque T M1 is increased and the engine rotational speed N E is changed toward the target engine rotational speed N E * so that the first motor rotational speed N M1 does not exceed the allowable limit of the first motor rotational speed N M1LIM . Thus, the excessive rotation of the first motor M1 is prevented. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To start an internal combustion engine while continuing running without performing charge and discharge of an electric storage device, and suppress a sense of discomfort that a driver may have. SOLUTION: When charge and discharge of a battery are inhibited during motor running, a system main relay is turned off and the engine is started by a first motor. The engine and the two motors are controlled so that the power output from the first motor is consumed by the second motor within the range of a withstanding voltage of a smoothing capacitor or below (S130-S150). When a starting vehicle speed V1 at the time of starting the engine is a threshold value Vref or above (S160), the brake actuator is controlled so that the driving torque acting on the drive shaft based on the change of rotation of a rotation system on the sun gear side from the power transfer integrating mechanism including the first motor is canceled by a hydraulic brake (S170). Thereby, it is made possible to start the engine while continuing running without performing charge and discharge of the battery and suppress a sense of discomfort that a driver may have. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To properly facilitate countermeasures to the change of a request driving force requested to a driving shaft connected to an axle during gear shift. SOLUTION: When a damping inhibition flag Fv is a value 1, and damping control by a motor MG2 is inhibited, damping torque Tv is set to a value 0 so that damping control can be prevented from being performed (step S230), and rate processing using a torque rate R2 as a rate which is smaller than a torque rate R1 is operated, and request torque Tr* is set so as to made close from the previous request torque Tr* to temporary request torque Trtmp (step S240), and an engine 22 or motors MG1 and MG2 are controlled so that torque based on the set request torque Tr* can be output (steps S150 to S220). Thus, it is possible to suppress the generation of shock due to the rapid change of a request driving force requested for traveling, and to properly facilitate countermeasures to the change of the request driving force. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To exhibit performance of a battery to improve performance of a vehicle. SOLUTION: In the vehicle, a power generator, an engine, and a driving axle are connected to a sun gear of a planetary gear mechanism, a carrier, and a ring gear, and an electric motor is connected to the driving axle. The vehicle has a battery exchanging power with the power generator and the electronic motor. In the vehicle, when stopping the engine or staring the engine by the power generator, input limit Win of the battery is changed by an excess tolerance Wset (S360-S420). It is controlled such that a required torque is output to the driving axle by a torque input/output from the electric motor and a torque applied to the driving axle from the power generator through the sun gear including a torque based on a change of a rotation speed of an inertial system including the power generator within a range of the input limit Win. Thereby, the engine can be started or stopped by the power generator, and the required torque can be satisfied. As a result, the performance of the battery is exhibited to improve the performance of the vehicle. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent members of a transmission 60 from wearing, in an automobile 20 in which an engine 22, a motor MG 1 and a drive shaft 32a are connected to a power distribution integrating mechanism 30 and in which a motor MG 2 is connected to the drive shaft 32a via the transmission 60 so that the speed of the transmission 60 is changed by means of the number of revolutions of the motor MG 2 and the number of revolutions of the drive shaft 32a. SOLUTION: When the number of revolutions of the drive shaft 32a cannot be estimated based on the number of revolutions of the engine 22 and the number of revolutions of the motor MG 1, the transmission 60 is not allowed to change speeds. If the transmission 60 is shifted using the number of revolutions of the drive shaft 32a that is detected by a sensor 36 and the number of revolutions of the motor MG 2 while the number of revolutions of the drive shaft 32a cannot be estimated, in the event of failure of the sensor 36 during the shift and members of the transmission 60 could wear due to the non-smooth shift, because the number of revolutions of the drive shaft 32a cannot be used; in this state, the transmission 60 is not allowed to shift so as to avoid such a trouble. COPYRIGHT: (C)2007,JPO&INPIT