公开(公告)号：JP2003254118A

公开(公告)日：2003-09-10

申请号：JP2002053068

申请日：2002-02-28

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO

IPC: F02M25/08 ,  F01N3/24 ,  F02D13/02 ,  F02D17/00 ,  F02D29/02 ,  F02D41/04 ,  F02D45/00

Abstract: PROBLEM TO BE SOLVED: To control the operation stop of an internal combustion engine in a state of keeping exhaust emission control performance and preventing the overheat of a catalyst, based on the recognition that the purification by the combustion of unburned components impairs NOx purification by the catalyst, and the purification of the catalyst by burned components may cause the overheat of the catalyst. SOLUTION: When the control judgment to stop the operation of the internal combustion engine is done, the attached fuel reducing operation for reducing the amount of fuel attached to a wall face from an intake port to a combustion chamber, is executed, and then the supply of the fuel is stopped. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2001132437A

公开(公告)日：2001-05-15

申请号：JP31246399

申请日：1999-11-02

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO ,  HIROSE KATSUHIKO ,  HOSHI KOICHI

IPC: F02P5/15 ,  B60K6/20 ,  B60K6/445 ,  B60W10/06 ,  B60W20/00 ,  F01N3/08 ,  F01N3/24 ,  F02D41/04 ,  F02D43/00

Abstract: PROBLEM TO BE SOLVED: To restrict discharge of hydrocarbon into atmoshperic air. SOLUTION: This device is provided with adsorbent for adsorbing hydrocarbon in exhaust gas discharged from an internal combustion engine, and oxidation catalyst for oxidizing hydrocarbon emitted from the adsorbent to be purified. Temperature of the exhaust gas is risen so that hydrocarbon is emitted from the adsorbent when the hydrocarbon is to be emitted from the adsorbent.

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：JP2000186591A

公开(公告)日：2000-07-04

申请号：JP36517598

申请日：1998-12-22

Applicant: TOYOTA MOTOR CORP

Inventor： NISHIGAKI TAKAHIRO ,  HIROSE KATSUHIKO ,  KANAI HIROSHI ,  TAKAOKA TOSHIBUMI ,  INOUE TOSHIO ,  KUSADA MASAKI ,  SUZUKI TAKASHI ,  YAMAZAKI MAKOTO

IPC: F02P17/12 ,  B60K6/20 ,  B60K6/445 ,  B60K8/00 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F02D29/02 ,  F02D29/06 ,  F02D45/00

Abstract: PROBLEM TO BE SOLVED: To prevent wrong determination of a misfire or the like according to the ion current detection result by limiting the combustion state determination of an internal combustion engine based on an ion current according to the current flowing through a motor and a motor control device of a hybrid vehicle. SOLUTION: An electric control unit(ECU) 40 reads a voltage value of an ignition plug 16 part generated by an ion current, and compares the read value with a designated value to conduct the required control operation when a misfire is determined. In the ion current detecting device of a hybrid vehicle, when a large current flows through a motor, noise is generated to have a bad influence to the ion current to cause wrong determination of a misfire. When a misfire determination limiting routine is executed, the noise present is determined when the detection values Im of currents of motors MG1, MG2 are larger than a designated amount, when the change rate (dIm/dt) of the detected current value is larger than a designated value, or when a regenerative control current Irm flows. Thus, it is possibe to prevent wrong determination of the engine combustion state according to the detection of an ion current influenced by noise.

公开(公告)号：JPH1010075A

公开(公告)日：1998-01-16

申请号：JP16310396

申请日：1996-06-24

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO

IPC: G01N27/41 ,  F01N3/20 ,  F01N11/00 ,  F02D41/14 ,  F02D41/22 ,  G01N27/04 ,  G01N27/12 ,  G01N27/26 ,  G01N27/409 ,  G01N27/419

Abstract: PROBLEM TO BE SOLVED: To control the power supply to the heater of an air-fuel ratio sensor while taking into account the radiant heat which the air-fuel ratio sensor receives from a catalyst. SOLUTION: Heater power maps, in which the power to be supplied to a heater when the heater is affected by the radiant heat of a catalyst (new one) and the power to be supplied when it is not affected are calculated in accordance with operating conditions, are originated, and the difference between the power Q1ij to be supplied to the heater when it is affected by the radiant heat of the catalyst and the power Q2ij to be supplied to the heater when it is not affected by the radiant heat of the catalyst under the same operating condition, AQij =Q2ij -Q1ij , is calculated. Separately, the degree DR of degradation of the catalyst is calculated, and ΔQij is multiplied by a factor α calculated in accordance with the degree DR and is then subtracted from Q2ij to calculate the power Qij to be supplied to the heater; i.e., it is calculated by using Qij =Q 2ij -αx(Q2ij -Q1ij ).

公开(公告)号：JPH08165945A

公开(公告)日：1996-06-25

申请号：JP31030094

申请日：1994-12-14

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO

IPC: F02D45/00 ,  F02D41/14

Abstract: PURPOSE: To suppress the fluctuation of an air-fuel ratio by a method wherein a guard for a present correction amount is set from the present fluctuation center of a correction amount when, based on an output from an air-fuel sensor arranged upper stream from a catalyst converter, a correction amount is decided and a fundamental fuel injection amount is adjusted for correction. CONSTITUTION: When, based on an output from an air-fuel ration sensor 9 arranged upper stream from a catalyst converter 8, a correction amount is decided and a fundamental fuel injection amount is adjusted for correction, each time a fundamental fuel injection amount and a correction amount are decided, the present fluctuation center of a fluctuating correction amount is calculated. After the present upper and lower guard value of a correction amount are then calculated, a present fluctuation center is stored as a preceding fluctuation center in preparation for subsequent processing. It is then decided whether or not a present correction amount exceeds the upper guard value and when it exceeds the upper guard value, a correction amount is set as the upper guard value and when it is therebelow, a correction amount is set as the lower guard value when a present correction amount is below the lower guard value.

公开(公告)号：JP2003176737A

公开(公告)日：2003-06-27

申请号：JP2001374621

申请日：2001-12-07

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO

IPC: F02D45/00 ,  B60K6/20 ,  B60K6/445 ,  B60L50/16 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  F01N3/20 ,  F02D29/02 ,  F02D29/06 ,  B60K6/02 ,  B60L11/14

Abstract: PROBLEM TO BE SOLVED: To provide a vehicle controller preventing emission deterioration caused by catalyst deterioration. SOLUTION: This vehicle controller is installed in a hybrid vehicle mounted with an engine 2 and a motor 3, and traveling by drive of at least one of the engine 2 and the motor 3. The vehicle controller detects deterioration states of catalysts 53, 54 purifying exhaust gas of the engine 2, and restricts output of at least one of the engine 2 and the motor 3 according to the deterioration states of the catalysts 53, 54. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002349251A

公开(公告)日：2002-12-04

申请号：JP2001160201

申请日：2001-05-29

Applicant: TOYOTA MOTOR CORP

Inventor： INOUE TOSHIO ,  OI YASUHIRO

IPC: F02M25/00 ,  B60K1/02 ,  B60K6/445 ,  B60W10/06 ,  B60W20/00 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F02D17/00 ,  F02D17/02 ,  F02D17/04 ,  F02D29/02 ,  F02D41/02 ,  F02D41/06 ,  F02D43/00 ,  F02N11/08

Abstract: PROBLEM TO BE SOLVED: To improve an air environment preserving characteristic by suppressing NOx exhaust caused by temporary stop and resumed operation of an engine in an economic running vehicle or hybrid vehicle. SOLUTION: In an engine operation of a vehicle which intermittently operates an internal combustion engine, fuel for catalyst reduction is temporarily supplied before starting combustion of the fuel to return to engine operation so that operation of an exhaust emission control catalyst is not returned with oxygen accumulated when the engine is temporarily stopped, and the oxygen accumulated in the exhaust emission control catalyst with temporary stop of the engine is reduced.

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：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.