公开(公告)号：JP2002323070A

公开(公告)日：2002-11-08

申请号：JP2001124362

申请日：2001-04-23

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO ,  ENDO HIROATSU

IPC: B60W10/04 ,  B60K6/20 ,  B60K6/48 ,  B60K6/543 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02D29/00 ,  F02D29/02 ,  F16D48/02 ,  B60K6/02 ,  B60K41/00 ,  B60K41/02

Abstract: PROBLEM TO BE SOLVED: To provide a vehicle control device having less release shock derived from a releasing operation of a power transmission opening and closing device disposed between a prime motor and a driving wheel in traveling. SOLUTION: When a hybrid control device determination 10 for a vehicle determines a release condition satisfactorily by a release condition satisfaction means 100 determines, a second clutch C2 is released by a release means 108 at the time when input torque to the second clutch (the power transmission opening and closing device) C2 becomes zero. Therefore, a vehicle in inertial travel has no change of drive torque derived from the release of the second clutch C2 so as to favorably control a release shock in a traveling vehicle.

公开(公告)号：JP2003269168A

公开(公告)日：2003-09-25

申请号：JP2002070790

申请日：2002-03-14

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: F01P7/16 ,  F01P3/20

Abstract: PROBLEM TO BE SOLVED: To provide a method of operating an engine cooling device for solving a problem of the engine cooling device with separate pumps for cooling a cylinder block and a cylinder head that a large energy loss may be caused as the pump for cooling the cylinder block is operated on the condition with a low energy efficiency. SOLUTION: In handling the increase of requests for cooling the cylinder block, the output of the pump for cooling the cylinder head is increased while the pump for cooling the cylinder block is stopped to cool down the cylinder head more intensively, and the cooling performance on the cylinder block is improved via the heat conduction between the cylinder block and the cylinder head. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003166633A

公开(公告)日：2003-06-13

申请号：JP2001362148

申请日：2001-11-28

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: B60K17/04 ,  B60K6/20 ,  B60K6/36 ,  B60K6/445 ,  B60K6/547 ,  B60L50/16 ,  B60W10/06 ,  B60W10/10 ,  B60W20/00 ,  F16H61/02 ,  F16H63/50 ,  B60K6/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To rationalize the operation of a transmission when an internal combustion engine separated from a wheel driving shaft by the transmission is connected again to the wheel driving shaft in operating a vehicle by a hybrid vehicle driving structure with the transmission. SOLUTION: In the hybrid vehicle driving structure, the output shaft of the internal combustion engine 1 is connected to a first motor generator 8 and the wheel driving shaft 11 via a power distribution mechanism 3, and a second motor generator 12 is connected to the wheel driving shaft. The hybrid vehicle driving structure has the transmission 100 on the side nearer to the internal combustion engine than to the connection part of the second motor generator in the middle of the wheel driving shaft. In operating the hybrid vehicle driving structure, the transmission is operated starting from a different optimal speed stage according to the vehicle speed or a required axle torque when the internal combustion engine separated from the wheel driving shaft by the transmission is connected again to the wheel driving shaft. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003130202A

公开(公告)日：2003-05-08

申请号：JP2001323931

申请日：2001-10-22

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: B60K17/04 ,  B60K6/20 ,  B60K6/36 ,  B60K6/445 ,  B60K6/547 ,  B60L50/16 ,  B60W10/08 ,  B60W10/10 ,  B60W20/00 ,  F16H59/74 ,  F16H61/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To renew a switching mode of a gear shift stage so that a characteristic of a hybrid vehicle driving structure is made the most of, when incorporating a transmission in mid-way of a wheel drive shaft to obtain a required speed to axle torque characteristic by keeping fuel economy of an internal combustion engine in an excellent state without increasing a second motor-generator in scale, in the hybrid vehicle driving structure connecting an output shaft of the internal combustion engine to a first motor-generator and the wheel drive shaft via a power distribution mechanism and connecting the second motor- generator to the wheel drive shaft. SOLUTION: A region corresponding to each gear shift stage is partitioned not according to a speed but according to the magnitude of axle torque from the viewpoint of a coordinate system of the speed to axle torque showing axle torque sharing by the internal combustion engine and the second motor- generator.

公开(公告)号：JP2002174328A

公开(公告)日：2002-06-21

申请号：JP2000368020

申请日：2000-12-04

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: B60K6/20 ,  B60K6/445 ,  B60K6/48 ,  B60K6/543 ,  B60L9/18 ,  B60L15/20 ,  B60L50/16 ,  B60W10/08 ,  B60W10/10 ,  B60W10/26 ,  B60W10/30 ,  B60W20/00 ,  F16H57/04 ,  B60K6/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To reduce a power loss of a lower transmission mechanism caused by viscous resistance of lubricating oil when a temperature is low and an insufficient clearance, without separately providing a heating means such as a heater. SOLUTION: When a temperature THCVT of hydraulic fluid in a hydraulic control circuit controlling a gear shift or the like of a transmission is below a lower limit value THmin, a charge and discharge demand value spchg is set to the maximum value spchgmin on a charge side or the maximum value spchgmax on a discharge side in accordance with a power storage amount SOC to change an operation region of a 'direct connecting mode' and a 'motor running mode' in accordance with the value of the charge and discharge demand value spchg and control the power generation or the power operation of a motor generator when a vehicle runs at the 'direct connecting mode' so that the operation frequency (time) of the motor generator is increased, power generation torque and power operation torque are increased in accordance with the value of the charge and discharge demand value spchg, and an amount of heat generation in accordance with the operation of the motor generator is increased so as to quickly raise the temperature THCVT of hydraulic fluid used also in cooling the motor generator.

公开(公告)号：JP2002171601A

公开(公告)日：2002-06-14

申请号：JP2000364299

申请日：2000-11-30

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: B60K25/00 ,  B60K6/20 ,  B60K6/36 ,  B60K6/48 ,  B60K6/50 ,  B60K6/543 ,  B60L7/10 ,  B60L50/16 ,  B60W10/02 ,  B60W10/04 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/101 ,  B60W10/105 ,  B60W20/00 ,  F16H3/72 ,  F16H9/18 ,  F16H59/54 ,  F16H61/04 ,  B60K41/00 ,  B60K41/14 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To obtain an excellent power generation efficiency even in a regenerative control while rotating an engine together, when charging up a battery exerting a predetermined brake force on a vehicle at the same time in the vehicle traveling. SOLUTION: A shaft control of a transmission is exercised according to different standards, in a connection state that the engine is rotated together (S3 is YES.) or in a cutoff state that the engine is cut off (S3 is No.). That is, the shift control is exercised in the cutoff state so that the power generation efficiency of the motor/generator at the step 8 is maximized under a predetermined conditions, on the other hand, the shift control is exercised in the connection state so that a rotation resistance of the engine at the step 5 is minimized under a predetermined condition. Even in the connection state, in cases where the regenerative control cannot be exercised due to a failure of the motor/ generator or the like, the shift control is exercised so that a predetermined brake force is obtained according to the rotation resistance of the engine at the step 7.

公开(公告)号：JP2000199420A

公开(公告)日：2000-07-18

申请号：JP37338598

申请日：1998-12-28

Applicant: TOYOTA MOTOR CORP

Inventor： KUSADA MASAKI ,  HIROSE KATSUHIKO ,  KANAI HIROSHI ,  TAKAOKA TOSHIBUMI ,  INOUE TOSHIO ,  NISHIGAKI TAKAHIRO ,  KOJIMA MASAKIYO

IPC: F01M11/10 ,  B60K6/20 ,  B60K6/445 ,  B60K8/00 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02D17/00 ,  F02D29/02 ,  F02D45/00

Abstract: PROBLEM TO BE SOLVED: To accurately detect deterioration of engine related parts for a hybrid car. SOLUTION: This deterioration detection system comprises motors MG1, MG2 connected to the output shaft of an engine and a control device 180 which temporarily stops or runs the engine 100 under a predetermined driving condition and also controls the actuation of the motors MG1, MG2. The deterioration detection system further comprises an engine operating time counting device to count an engine operating time from a combustion operating time when a driving force generated by engine combustion energy is transmitted to an output shaft and a non-combustion operating time when the engine is not running and as a result no force is transmitted from the engine to the output shaft. The system is further equipped with a deterioration determination device to determine deterioration of engine related parts based on the engine operating times.

公开(公告)号：JPH10326115A

公开(公告)日：1998-12-08

申请号：JP29624697

申请日：1997-10-13

Applicant: TOYOTA MOTOR CORP

Inventor： TAKAOKA TOSHIBUMI ,  NISHIGAKI TAKAHIRO ,  KOJIMA MASAKIYO ,  KANAI HIROSHI ,  ABE SHINICHI ,  KOBAYASHI YUKIO ,  NAGASE KENICHI ,  HARADA OSAMU ,  YAMAGUCHI KATSUHIKO

IPC: F02D29/02 ,  B60K1/02 ,  B60K6/20 ,  B60K6/24 ,  B60K6/365 ,  B60K6/40 ,  B60K6/445 ,  B60K6/52 ,  B60K17/356 ,  B60L50/15 ,  B60L50/16 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  G05D17/00 ,  H02K7/18 ,  H02P5/747 ,  H02P9/04 ,  B60L11/14 ,  H02P7/747

Abstract: PROBLEM TO BE SOLVED: To prevent the lowering of efficiency due to the energy circulating to a power transmission path for a motive power output device which uses an engine as and a motor its power source. SOLUTION: This motive power output device consists of a generator MG1, a motor MG2 and an output shaft of an engine 150 which are connected to a sun gear shaft of a planetary gear 120, a ring gear shaft and the gear 120 respectively. In such a constitution, the motive power generated by the engine 150 is regenerated as electric power by the motor MG2. Then the circulation of energy of 'gear 120-motor MG2-generator MG1gear 120' that is caused when the generator MG1 is powered by the electric power can be prevented by the following control to evade the lowering of efficiency. That is, the torque command value of the motor MG2 is monitored, and the operation point of the engine is changed to a point of higher rotational frequency when the said torque command value is reduced less than its threshold Tref.

公开(公告)号：JP2003130203A

公开(公告)日：2003-05-08

申请号：JP2001324064

申请日：2001-10-22

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: B60K17/04 ,  B60K6/20 ,  B60K6/445 ,  B60K6/547 ,  B60L50/16 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W20/00 ,  F02D29/02 ,  F16H59/74 ,  F16H61/02 ,  F16H61/12 ,  F16H61/68 ,  F16H61/684 ,  F16H61/686 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To correspond to a switching mode of a gear shift stage by making the most of a characteristic of a hybrid vehicle driving structure so that the driving of wheels is not affected when either one of a related engine or a second motor-generator fails, when incorporating a transmission in mid-way of a wheel drive shaft to obtain a required speed to axle torque characteristic by keeping fuel economy of an internal combustion engine in an excellent state without increasing the second motor-generator in scale, in the hybrid vehicle driving structure connecting an output shaft of the internal combustion engine to a first motor-generator and the wheel drive shaft via a power distribution mechanism and connecting the second motor-generator to the wheel drive shaft. SOLUTION: When an operation of either one of the internal combustion engine or the second motor-generator is not in a normal state, a shift control of the transmission is corrected to correct the torque sharing of both of the internal combustion engine and the second motor-generator.

公开(公告)号：JP2002327778A

公开(公告)日：2002-11-15

申请号：JP2001132925

申请日：2001-04-27

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: F02D29/02 ,  B60K8/00 ,  B60L50/16 ,  F02D29/06 ,  F16D48/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To provide a car controller which does not cause deterioration of fuel consumption resulting from frictional resistance loss due to the accompanying movement of an engine and does not cause any shock resulting from connection of the engine in the following reacceleration operation, in the separating control of the engine from the power transmission line. SOLUTION: In a deceleration running of a hybrid vehicle, when the presence of a driver's braking request is distinguished, as the separation operation region of the engine to separate the engine 14 from the driving wheel 52 is widened by an engine separative operation zone changing means 108 as compared with the case that the braking request is not required, the engine 14 is separated at the vehicle braking that the next reaccelerating operation is hardly requested. And hence, the separative region is enlarged and at the same time, the shock accompanied by the connection of the engine 14 in reacceleration is favorably prevented. And the deterioration of fuel consumption resulting from the frictional resistance loss due to the accompanying movement of the engine 14 in a high revolutional speed condition is also favorably prevented.