公开(公告)号：JP2002047926A

公开(公告)日：2002-02-15

申请号：JP2000232008

申请日：2000-07-31

Applicant: TOYOTA MOTOR CORP

Inventor： KUSADA MASAKI ,  TAKAOKA TOSHIBUMI ,  INOUE TOSHIO ,  SUZUKI NAOTO

IPC: F01N3/24 ,  B01D53/94 ,  F01N3/08 ,  F01N3/18

Abstract: PROBLEM TO BE SOLVED: To perform continuity of exhaust gas for HC desorption to an HC adsorbing material layer when starting an engine in an engine warming-up state. SOLUTION: This device is provided with an exhaust system including an HC adsorbing material layer and an exhaust gas purifying catalyst layer having an oxygen holding function. By passing the exhaust gas through the HC adsorbing material layer when starting a cold temperature of the engine, the HC absorbing material layer is made to adsorb HC in the exhaust gas. By passing exhaust gas through the HC adsorbing material layer after warming-up of the engine and the exhaust system, HC adsorbed by the HC adsorbing material layer is desorbed. An HC eliminating operation for the engine exhaust device for a wheel for discharging the desorbed HC by being converted into H2O and CO2 by oxygen held in the exhaust gas purifying catalyst layer is ensured and generation of NOx is suppressed by the exhaust gas purifying catalyst layer when starting the engine after warming-up of the engine.

公开(公告)号：JP2002017005A

公开(公告)日：2002-01-18

申请号：JP2001123976

申请日：2001-04-23

Applicant: TOYOTA MOTOR CORP

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

IPC: B60L50/16 ,  B60K6/20 ,  B60K6/44 ,  B60K6/445 ,  B60K6/52 ,  B60L15/20 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60L11/14 ,  B60K6/02

Abstract: PROBLEM TO BE SOLVED: To reduce shock during the transient period when a load operation state for generation changes into a no-load operation state including idling or motoring in a hybrid vehicle. SOLUTION: With regard to a hybrid power outputting device comprising an engine and a generator connected mechanically, the output torque of the generator is controlled so that it may not change suddenly during the transient period when the load operation state shifts to the no-load operation state. As a means, the minimum revolutions of an internal combustion engine under the load operation state is set to the revolutions by about 200 rpm larger than those under the no-load operation state. This setting makes the revolutions of the engine change smoothly during the period from the load operation state to the no-load operation state. Because the sudden change of torque of the generator under the PI-control based on the revolutions of the engine can be suppressed, the shock to be caused by the sudden change of torque can be reduced.

公开(公告)号：JP2001140673A

公开(公告)日：2001-05-22

申请号：JP32988999

申请日：1999-11-19

Applicant: TOYOTA MOTOR CORP ,  DAIHATSU MOTOR CO LTD

Inventor： SUZUKI TAKASHI ,  TAKAOKA TOSHIBUMI ,  SUZUKI NAOTO ,  OKADA HIROFUMI

IPC: F02N11/10 ,  B60K6/20 ,  B60K6/485 ,  B60K6/543 ,  B60W10/06 ,  B60W20/00 ,  F02D17/00 ,  F02D29/02 ,  F02N11/08

Abstract: PROBLEM TO BE SOLVED: To improve drivability of a vehicle by reducing unnatural feeling and unpleasant feeling imparted to a driver by start/stop of an engine when the vehicle is driven. SOLUTION: In a stop/start control device for engine adapted in a vehicle in which an engine is stopped when a prescribed stop condition is formed and the engine is started when a prescribed starting condition is formed also when a shift position is a traveling position, the shift position of the vehicle is detected and the engine starting condition is changed to a side for making the engine difficult to be started when the shift portion is the traveling position. By this constitution, engine starting speed at the time of the traveling position is rationally distributed to a non-traveling position time side.

公开(公告)号：JPH06257477A

公开(公告)日：1994-09-13

申请号：JP4397193

申请日：1993-03-04

Applicant: TOYOTA MOTOR CORP

Inventor： TAKAOKA TOSHIBUMI

IPC: F02D13/02 ,  F02D15/00 ,  F02D45/00

Abstract: PURPOSE:To suppress knocking without using any knock sensor and the like and to suppress worsening of fuel consumption. CONSTITUTION:An opening/closing timing of an intake valve is altered by driving a VVT 23 by an oil pressure. An ECU 70 computes a driving area of an engine 1 on the basis of signals of an air flow meter 62, a rotational speed sensor 66, and the like. When the computed result is in a low relation and load area or a low rotation and high load area, the opening/closing timing of the intake valve 8 drives the VVT 23 for spark-advance. On the other hand, when the computed result is in a low rotation and medium load area or in an area of more than medium rotation, the VVT 23 is driven so as to delay the opening/closing timing of the intake valve 8. Therefore, the opening/closing timing of the intake valve 8 is delayed in a low rotation and medium load driving area, in which knocking is likely to happen, so that an intake air, which tends to escape after being introduced into a combustion chamber 4 once, is increased, and consequently, the intake air amount is reduced and an effective compression ratio is reduced.

公开(公告)号：JPH04334739A

公开(公告)日：1992-11-20

申请号：JP10415791

申请日：1991-05-09

Applicant: TOYOTA MOTOR CORP

Inventor： TAKAOKA TOSHIBUMI ,  KAWAI TAIYO

IPC: F02D41/14 ,  F02D41/34

Abstract: PURPOSE:To enable change of a fuel injection time according to the torque fluctuation amount of an internal combustion engine, in a device for controlling the fuel injection time of a multiple cylinder internal combustion engine for lean limit control. CONSTITUTION:A torque fluctuation value is detected (step 101 to 108), and it is judged whether the detected torque fluctuation value is in a prescribed value range or not, (step 110). When the torque fluctuation value is a lower limit value or less, a fuel injection completed time is advanced (step 111). When the torque fluctuation value is an upper limit value or more, the fuel injection completed time is delayed (step 112).

公开(公告)号：JP2002364417A

公开(公告)日：2002-12-18

申请号：JP2001172158

申请日：2001-06-07

Applicant: TOYOTA MOTOR CORP

Inventor： TOMATSURI MAMORU ,  TAKAOKA TOSHIBUMI ,  SUZUKI NAOTO

IPC: F02D13/02 ,  F02D15/00 ,  F02D29/02 ,  F02D41/06

Abstract: PROBLEM TO BE SOLVED: To start an internal combustion engine for an automobile possible to control to increase an intake air compression ratio before performing the cranking for facilitating a start of the internal combustion engine in the cold temperature condition as quickly as possible without generating vibration and increasing the intake compression ratio as long as capacity of a capacitor as a cranking power source allows. SOLUTION: An effective output of the capacitor for a cranking motor is the predetermined output threshold value showing the excellent capacity condition or more is judged, and when the effective output is more than the predetermined output threshold value, cranking is performed without increasing the intake air compression ratio independently of the engine temperature.

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：JP2002047966A

公开(公告)日：2002-02-15

申请号：JP2000236223

申请日：2000-08-03

Applicant: TOYOTA MOTOR CORP

Inventor： YAMAZAKI MAKOTO ,  TAKAOKA TOSHIBUMI ,  SUZUKI NAOTO ,  SUZUKI TAKASHI

IPC: B60W10/04 ,  B60K6/20 ,  B60K6/442 ,  B60K6/54 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02D29/06 ,  B60K6/02

Abstract: PROBLEM TO BE SOLVED: To provide a controller for a power train capable of suppressing change of a driving force of a vehicle without depending on other driving force source when a predetermined driving force source causes a failure. SOLUTION: In this controller for the power train constituted such that it has an engine and a motor generator, a fuel injection device, an ignition device, an electronic throttle valve, an actuator, an intake valve, and a valve timing actuator are provided to control an engine output, and the motor generator is driven by electric power generated by power of the engine, an output control means (step S1 or step S3) controlling a normal output controller to suppress the reduction of an engine output accompanied with a failure of an output controller when any of a plurality of output controllers causes the failure is provided.

公开(公告)号：JP2001315552A

公开(公告)日：2001-11-13

申请号：JP2000138586

申请日：2000-05-11

Applicant: TOYOTA MOTOR CORP

Inventor： TAKAOKA TOSHIBUMI ,  HIROSE KATSUHIKO ,  SUZUKI NAOTO

IPC: B60W10/00 ,  B60K6/20 ,  B60K6/48 ,  B60K6/547 ,  B60L15/20 ,  B60L50/16 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/18 ,  B60W10/26 ,  B60W20/00 ,  F16D48/02 ,  F16H61/04 ,  F16H61/08 ,  B60K41/28 ,  B60K41/00 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To reduce a speed reduction shock at shift operation time of a non- continuous variable transmission. SOLUTION: An HVECU 34 calculates the timing when the non-continuous variable transmission 16 starts an automatic shift, and gradually reduces a torque assist by motor torque Tm by an MG 18 before starting the shift via an MGECU 30, and reduces a torque difference generated when engine torque Te disappears by disengaging a friction clutch 14 at shift time, and reduces a shift time shock by moderating a gradient of a torque change.

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.