公开(公告)号：JP2002147271A

公开(公告)日：2002-05-22

申请号：JP2000340170

申请日：2000-11-08

Applicant: TOYOTA MOTOR CORP ,  DENSO CORP

Inventor： TAKAOKA TOSHIBUMI ,  OSAWA KOICHI ,  INOUE TOSHIO ,  KOJIMA MASAKIYO ,  KAJI TAKASHI

IPC: F02D45/00 ,  B60K6/20 ,  B60K6/48 ,  B60K6/543 ,  B60L50/16 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W20/00 ,  F02D29/02 ,  F02D29/06 ,  F02D41/16 ,  F02D41/22 ,  B60K6/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To prevent an engine stall without increasing an engine rotational speed to any higher level than required. SOLUTION: An engine stall is estimated in accordance with stall estimation criteria determined in advance (R1-3), and if the estimated number of times (counter snestp) reaches a determining value CNESTP1, a target rotational speed of an engine netag is raised by only a compensation quantity neup so that the engine stall is not easily caused when the engine is started afterward (R1-7). On the other hand, if a prescribed restoring condition is satisfied (decision of R1-8 is YES), the compensated target rotational speed of the engine netag is returned back to the original by the compensation quantities neup (R1-9).

公开(公告)号：JP2002130094A

公开(公告)日：2002-05-09

申请号：JP2000327672

申请日：2000-10-26

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: B60W10/04 ,  B60K6/20 ,  B60K6/48 ,  B60K6/543 ,  B60K28/10 ,  B60L50/16 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02D29/00 ,  F02D29/02 ,  F02D41/04 ,  F02D41/06 ,  F02N11/04 ,  F02N11/08 ,  B60K41/00 ,  B60K41/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To reduce the wasteful consumption of fuel or generation of exhaust gas until the connection of a power interrupting mechanism when starting an engine during traveling in an engine stopped state and connecting the power interrupting mechanism. SOLUTION: When a starting is requested to use the engine as a drive source during traveling in the engine stopped state (S1 is YES), the engine is cranked by a starter without supplying fuel to the engine in steps S2-S5, and the torque of the starter is controlled so that engine rotating speed Ne matches to an input shaft rotating state Nin that is a synchronous rotating speed. After the engagement of a clutch C2 is completed in Ne=Nin, in other words, after the engine is connected to drive wheels through the power interrupting mechanism, the fuel injection control to the engine is started in step S7 to make the engine perform the self-actuated rotation by explosion.

公开(公告)号：JP2001234837A

公开(公告)日：2001-08-31

申请号：JP2000376407

申请日：2000-12-11

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO ,  TAKAOKA TOSHIBUMI ,  SUZUI KOSUKE ,  YAGI KATSUNORI ,  MORIYA TAKANORI

IPC: F02N15/00 ,  B60K6/20 ,  B60K6/445 ,  B60K6/543 ,  B60L50/16 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/30 ,  B60W20/00 ,  F02D29/02 ,  F02N11/04 ,  F02N11/08 ,  F16D48/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To reduce or eliminate shock and vibration generated in coupling operation of a coupling mechanism when an operation of an internal combustion engine is started. SOLUTION: In a case where rotating speed Nm of a motor 14 for driving an auxiliary machine is higher than prescribed rotating speed N1, inversion phase current is inputted to the motor 14, and rotating operation of the motor 14 is braked. When the rotating speed Nm of the motor 14 attains the prescribed rotating speed N1 and less, a solenoid clutch 15 is coupled, the rotating speed of the engine 10 is increased to rotating speed of a starting time by the motor 14, fuel is supplied, spark ignition is executed, the engine 10 is restarted, and then, the operation of the engine 10 is restarted.

公开(公告)号：JP2001041094A

公开(公告)日：2001-02-13

申请号：JP25946799

申请日：1999-09-13

Applicant: TOYOTA MOTOR CORP

Inventor： SUZUKI NAOTO ,  HIROSE KATSUHIKO ,  INOUE TOSHIO ,  KOJIMA MASAKIYO

IPC: F02D45/00 ,  B60K6/20 ,  B60K6/445 ,  B60W10/06 ,  B60W10/26 ,  B60W20/00 ,  F02D13/02 ,  F02D29/06 ,  F02D41/00 ,  F02D41/06 ,  F02P5/15 ,  B60K6/02

Abstract: PROBLEM TO BE SOLVED: To ensure the excellent start performance regardless of fuel properties and also prevent the wrong decision of the fuel properties. SOLUTION: When the starting condition of an internal combustion engine is realized, an usual start control is carried out to start the internal combustion engine. After the start of the internal combustion engine is started by the usual start control, when the start is finished in a prescribed time, it is judged that the properties of the fuel supplied to the internal combustion engine is soft. On the other hand, when the start is not finished in the prescribed time, it is judged that the fuel properties are heavy. In this case, after elapsing the prescribed time, the start control for heavy fuel is carried out in place of the usual start control so that the start of the internal combustion engine is quickly finished. By this method, the fuel properties are detected before the start of the internal combustion engine is finished and also when the fuel properties are heavy, the start control is changed to the control responding to the fuel properties.

公开(公告)号：JP2000161099A

公开(公告)日：2000-06-13

申请号：JP33119298

申请日：1998-11-20

Applicant: TOYOTA MOTOR CORP

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

IPC: B60K11/00 ,  B60K6/20 ,  B60K6/445 ,  B60K6/46 ,  B60K6/48 ,  B60K8/00 ,  B60W10/06 ,  B60W10/08 ,  B60W10/30 ,  B60W20/00 ,  F01P3/12 ,  F01P5/12 ,  F01P7/16 ,  F02D29/02 ,  F02D29/06 ,  F02D45/00 ,  B60K6/00

Abstract: PROBLEM TO BE SOLVED: To provide a cooling control device for an internal combustion engine capable of sufficiently cooling the internal combustion engine in a hybrid vehicle. SOLUTION: In the case of the engine temperature of an internal combustion engine 1 being higher than the specified temperature when driving driving wheels 6 using only the driving force of an MG 3, a control device 11 controls power dividing mechanism 4 to forcibly drive the internal combustion engine 1 by an MG 2 or the MG 3, or sets a change-over operating condition to an operating condition low in engine speed or vehicle speed, or stops fuel supply to a fuel injector 14 at higher engine speed to stop fuel supply to the internal combustion engine 1 and rotates the internal combustion engine 1.

公开(公告)号：JPH11210448A

公开(公告)日：1999-08-03

申请号：JP1437198

申请日：1998-01-27

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO

IPC: F01N3/20 ,  B60K6/20 ,  B60K6/445 ,  B60L50/15 ,  B60L50/16 ,  B60W10/06 ,  B60W10/26 ,  B60W20/00 ,  F01N3/24 ,  F02D29/02 ,  G05D23/00 ,  B60L11/12

Abstract: PROBLEM TO BE SOLVED: To securely prevent worsening of exhaust emission by providing a temperature hold means holding a temperature of an exhaust air purifying part for purifying exhaust air from an internal combustion engine above a function activation temperature. SOLUTION: This hybrid engine has a power distribution mechanism 4 distributing rotation force of an output shaft 1a of an internal combustion engine 1 to a power generator 3 and a rotary shaft 2a of an electric motor 2. Moreover, it is provided with an inverter 5 which selectively applies power generated by the power generator 3 to the electric motor 2 and a battery 6 or condensed power of the battery 6 to the electric motor 2. In this case, an exhaust air purifying catalyst 14 as an exhaust air purifying part is provided on the halfway of an exhaust pipe 13 to hold a temperature of the exhaust air purifying catalyst 14 above a function activation temperature at all times irrespective whether the internal combustion engine is in an operation state or a non-operation state. That is, a catalyst temperature sensor 15 is provided to operate a heating means so that a temperature of the exhaust air purifying catalyst 14 is held above the function activation temperature when the temperature detected by the sensor 15 is dropping.

公开(公告)号：JP2004011533A

公开(公告)日：2004-01-15

申请号：JP2002166183

申请日：2002-06-06

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO ,  KOJIMA MASAKIYO

IPC: F02M25/08 ,  F01N3/24 ,  F02D17/00 ,  F02D29/02 ,  F02D41/04

Abstract: PROBLEM TO BE SOLVED: To enhance an exhaust emission control function by a catalyst. SOLUTION: An electronic control unit ECU determines whether or not an internal combustion engine E is stopped based on input information from a sensor S. When a battery voltage exceeds a threshold during vehicle travelling for example, the electronic control unit ECU determines that the internal combustion engine E is stopped and an electric motor M/G is driven instead. In order to stop the internal combustion engine E, a fuel injection from an injector I is stopped. The electronic control unit ECU determines, based on the input information from the sensor S, whether or not a condition that fuel supply to the internal combustion engine E is stopped is satisfied, and when the condition that the fuel supply to the internal combustion engine is stopped is satisfied, reduction means (canister CA, valve V) are controlled so as to reduce an amount of NO held in catalysts CT1 and CT2. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003127679A

公开(公告)日：2003-05-08

申请号：JP2001323924

申请日：2001-10-22

Applicant: TOYOTA MOTOR CORP

Inventor： TAKAOKA TOSHIBUMI ,  KOJIMA MASAKIYO

IPC: B60K17/04 ,  B60K6/20 ,  B60K6/22 ,  B60K6/36 ,  B60K6/383 ,  B60K6/387 ,  B60K6/445 ,  B60K6/547 ,  B60L50/16 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W20/00 ,  F02D29/02 ,  F02N11/04 ,  F02N11/08 ,  F16H61/02 ,  F16H61/68 ,  F16H61/684 ,  F16H61/686 ,  B60K6/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To properly support a wheel driving shaft against cranking torque and to prevent the fluctuation of the cranking torque from transmitting to the shaft, when an internal combustion engine is cranked by a first motor generator MG1 in hybrid vehicle driving structure in which an output shaft 2 of the internal combustion engine is connected to a first motor generator MG1 and a wheel driving shaft 11 through a power distribution mechanism 3 and a second motor generator MG2 is connected to the wheel driving shaft. SOLUTION: This structure has means 51, 52, 55, 56, 100 and 101 for increasing cranking support torque that is received by the wheel driving shaft 11, other than by the second motor generator MG2, when the internal combustion engine is cranked by the first motor generator MG1.

公开(公告)号：JP2001132507A

公开(公告)日：2001-05-15

申请号：JP31378099

申请日：1999-11-04

Applicant: TOYOTA MOTOR CORP

Inventor： KOJIMA MASAKIYO ,  INOUE TOSHIO

IPC: F02D43/00 ,  B60K6/20 ,  B60K6/445 ,  B60W10/06 ,  B60W20/00 ,  F02D13/02 ,  F02D29/02 ,  F02D41/06 ,  F02D45/00

Abstract: PROBLEM TO BE SOLVED: To provide a control device for an internal combustion engine to improve exhaust performance at starting in an internal combustion engine equipped with an adjustable valve mechanism, and to provide a vehicle equipped with the device. SOLUTION: The overlapping of intake and exhaust valves is set to exceed the prescribed valve at a cold starting by an adjustable valve mechanism, and the internal combustion engine is rotated with the number of idle rotations by a start motor. Fuel is supplied after the negative pressure in a combustion chamber reaches prescribed negative pressure. This action enables to prevent fuel from sticking on the well surface of a fuel chamber and to improve exhaust performance.

公开(公告)号：JP2000199425A

公开(公告)日：2000-07-18

申请号：JP37445598

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: F02D45/00 ,  B60K6/20 ,  B60K6/24 ,  B60K6/445 ,  B60W10/06 ,  B60W10/26 ,  B60W20/00 ,  F01N3/20 ,  F01N11/00 ,  F02B3/06 ,  F02D41/04 ,  F02D41/22

Abstract: PROBLEM TO BE SOLVED: To provide a highly accurate catalyst deterioration detecting apparatus for hybrid automobiles. SOLUTION: This catalyst deterioration detecting apparatus comprises a catalyst 15 provided in an exhaust manifold 6 of an engine, an air-fuel ratio sensor 32 disposed downstream of the catalyst 15, an electric motor MG2 coupled to the output shaft of the engine, and a control means 40 for temporarily stopping the engine under a predetermined running condition as well as driving the electric motor MG2. Further, this apparatus also comprises oxygen amount estimation means 40 for estimating the oxygen amount stored in the catalyst 15, and deterioration judging means 40 for judging deterioration of the catalyst 32 from the output of the air-fuel ratio sensor 32 after resuming the drive of the engine and the oxygen amount estimated by the oxygen amount estimation means 40.