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81. 发明专利

JP2000045820A INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000045820A
公开(公告)日：2000-02-15
申请号：JP21430098
申请日：1998-07-29
申请人： TOYOTA MOTOR CORP
发明人： SASAKI SHIZUO , ITO TAKEKAZU
IPC分类号： F02M25/07 , F01N3/08 , F01N3/28 , F02D41/02 , F02D41/04 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To perform a stable combustion without generating smoke and causing misfire. SOLUTION: A first combustion having larger EGR gas amount in a combustion chamber 5 generating little soot, than the EGR gas amount generating maximum soot, and a second combustion having less EGR gas amount in the combustion chamber 5 than the EGR gas amount generating maximum soot, are performed selectively. Operation parameter values of an engine, which have effect on fuel in burning in the combustion chamber 5 and the surrounding gas temperature are detected, and based on the operation parameters, the injection starting timing or injection pressure in the first combustion is controlled so as to be between the injection starting timing or injection pressure causing the smoke, and the injection starting timing or injection pressure causing misfire.

82. 发明专利

JP2000038950A INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000038950A
公开(公告)日：2000-02-08
申请号：JP20502398
申请日：1998-07-21
申请人： TOYOTA MOTOR CORP
发明人： ITO TAKEKAZU , SASAKI SHIZUO , YOSHIZAKI KOJI , GOTO MASAHITO , MURATA HIROKI
IPC分类号： F02M25/07 , F01N3/24 , F02D41/02 , F02D41/04 , F02D41/38 , F02D41/40 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To excellently change-over between first combustion and second combustion. SOLUTION: Fuel is burned selectively by means of first combustion where the quantity of EGR gas in the inside of a combustion chamber 5 is greater than the quantity of EGR gas when almost no soot is generated, or second combustion where the quantity of EGR gas in the inside of the combustion chamber 5 is less than the quantity of EGR gas when soot is generated up to its peak value. When changing-over is made from first combustion to second combustion start timing for fuel injection is to be delayed, and when the changing-over is made from second combustion to first combustion, start timing for fuel injection is to be advanced.

83. 发明专利

JP2003166439A INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003166439A
公开(公告)日：2003-06-13
申请号：JP2001367118
申请日：2001-11-30
申请人： TOYOTA MOTOR CORP , DENSO CORP , TOYOTA IND CORP
发明人： ITO TAKEKAZU , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , AOYAMA TARO , TAWARA ATSUSHI , OKI MAMORU , YOKOYAMA MASAKUNI , KUSAJI HIDESHI , MIZUGUCHI KEIICHI
IPC分类号： F02B1/12 , F02D21/08 , F02D41/02 , F02D41/30 , F02D41/38 , F02D41/40 , F02D43/00 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To provide an internal combustion engine provided with engine control technology capable of restricting pilot injection at low temperature combustion period and suppressing the occurrence of combustion noise caused by the inhibition of pilot injection. SOLUTION: This internal combustion engine 1 can switch low temperature combustion for operating the engine by burning intake gas having high EGR rate and ordinary combustion for operating the engine by burning intake gas having low EGR rate during the operation of the engine. In the internal combustion engine 1, pilot injection is performed in addition to main fuel injection. Furthermore, pilot injection is restricted during the operation of the engine by switching to low temperature combustion. COPYRIGHT: (C)2003,JPO

84. 发明专利

JP2003166433A INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003166433A
公开(公告)日：2003-06-13
申请号：JP2001366091
申请日：2001-11-30
申请人： TOYOTA MOTOR CORP , DENSO CORP , TOYOTA IND CORP
发明人： SUGIYAMA TATSUMASA , MATSUOKA HIROKI , AOYAMA TARO , OTSUBO YASUHIKO , ITO TAKEKAZU , TAWARA ATSUSHI , TARUSAWA YUKI , MIZUGUCHI KEIICHI , NARITA YUJI
IPC分类号： F02M25/07 , F01N3/08 , F01N3/24 , F02D21/08 , F02D41/02 , F02D41/40 , F02D43/00 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide technology for stabilizing a combustion condition when combustion is performed at a low temperature in an internal combustion engine. SOLUTION: This internal combustion engine is provided with an internal combustion engine 1, a fuel supply means 3 for supplying fuel to each cylinder 2 of the internal combustion engine 1, an EGR device 26, a combustion condition switching means 35 for selecting either of low temperature combustion for increasing an EGR gas amount further after an amount of recirculating EGR gas is increased and a generation amount of soot is increased and becomes the maximum and ordinary combustion for recirculating an amount of EGR gas smaller than the amount of EGR gas at which the generation amount of soot becomes the maximum and switching these combustion conditions, and a fuel correcting means 35 for determining correction values of respective fuel supply amounts in low temperature combustion and ordinary combustion per cylinder 2. COPYRIGHT: (C)2003,JPO

85. 发明专利

JP2003166411A EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003166411A
公开(公告)日：2003-06-13
申请号：JP2001364466
申请日：2001-11-29
申请人： TOYOTA MOTOR CORP
发明人： MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , AOYAMA TARO , ITO TAKEKAZU , TAWARA ATSUSHI
IPC分类号： F02D9/02 , B01D39/14 , B01D46/24 , B01D46/44 , B01D53/94 , F01N3/02 , F01N3/24 , F02D41/38 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a technology which correctly determines the clogging degree of a trapping mechanism in an exhaust emission control device of an internal combustion engine having the trapping mechanism to trap particulate such as soot containing in the exhaust emission. SOLUTION: In the exhaust emission control device of the internal combustion engine having a trapping mechanism to trap particulate containing in the exhaust emission, the clogging degree of the trapping mechanism is correctly determined without being affected by the change in the exhaust emission flow rate flowing into the trapping mechanism, variance of a sensor, etc., by determining the clogging degree of the trapping mechanism with the ratio of increasing the differential pressure before and behind the trapping mechanism to the increase of the exhaust emission flow rate into the trapping mechanism. COPYRIGHT: (C)2003,JPO

86. 发明专利

JP2003155921A EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003155921A
公开(公告)日：2003-05-30
申请号：JP2001356202
申请日：2001-11-21
申请人： TOYOTA MOTOR CORP , DENSO CORP , TOYOTA IND CORP
发明人： AOYAMA TARO , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , ITO TAKEKAZU , TAWARA ATSUSHI , OKI MAMORU , YOKOYAMA MASAKUNI , KUSAJI HIDESHI , MIZUGUCHI KEIICHI
IPC分类号： F01N3/02 , B01D46/42 , B01D53/94 , F01N3/08 , F01N3/18 , F01N3/24 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a technology of favorably regenerate a particulate filter in an exhaust emission control device of an internal combustion engine equipped with the particulate filter. SOLUTION: In the exhaust emission control device of the internal combustion engine which estimate the PM trapping quantity of the particulate filter (29) provided in an exhaust passage of the internal combustion engine and determines the regeneration period of the particulate filter (29) according to the estimation, the regeneration period is corrected according to the actual regeneration state of the particulate filter (29) when performing the regeneration.

87. 发明专利

JP2003148133A EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003148133A
公开(公告)日：2003-05-21
申请号：JP2001341584
申请日：2001-11-07
申请人： TOYOTA MOTOR CORP
发明人： TAWARA ATSUSHI , MATSUOKA HIROKI , SUGIYAMA TATSUMASA , OTSUBO YASUHIKO , AOYAMA TARO , ITO TAKEKAZU
IPC分类号： F01N3/08 , B01D53/56 , B01D53/74 , B01D53/94 , F01N3/10 , F01N3/28 , F01N9/00
摘要： PROBLEM TO BE SOLVED: To control precisely a temperature of a catalyst by providing a technology that eliminates a difference between a quantity of a reducing agent needed at the time of catalyst temperature rise and the quantity of the reducing agent actually supplied in an exhaust emission control device for an internal combustion engine. SOLUTION: This device is provided with: an exhaust emission control catalyst 20; an operating condition detecting means 33; a target amount of temperature rise determining means 35 to determine the target amount of temperature rise of the catalyst 20; a temperature raising means 28 to raise the temperature of the catalyst 20 by supplying a reducing agent; the catalyst temperature rise estimating means 24 to estimate the actual temperature rise of the catalyst 20; a compensation coefficient calculation means 35 to calculate the ratio between the temperature rise determined with the determining means 35 for the target amount of temperature rise and the temperature rise determined with an estimating means 24 for the temperature rise of the catalyst; and a reducing agent supplied amount compensating means 35 to compensate the amount supplied of the reducing agent supplied by the temperature raising means 28 based on the value calculated by the compensation coefficient calculation means 35.

88. 发明专利

JP2002004902A INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002004902A
公开(公告)日：2002-01-09
申请号：JP2000187545
申请日：2000-06-19
申请人： TOYOTA MOTOR CORP
发明人： SASAKI SHIZUO , YOSHIZAKI KOJI , GOTO MASAHITO , ITO TAKEKAZU
IPC分类号： F02M25/07 , F01N3/20 , F01N3/24 , F02D9/02 , F02D21/08 , F02D41/00 , F02D41/02 , F02D41/06 , F02D41/38 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To complete the warming-up of a catalyst earlier while suppressing the passage of hydrocarbon through the exhaust gas cleaning catalyst for early change from second combustion into first combustion. SOLUTION: The second combustion is performed at starting an engine where the amount of an EGR gas to be supplied into a combustion chamber 5 is less than the amount of an EGR gas in conjunction with the generation amount of soot to be at a peak (t0-t2), and then the first combustion is performed where the amount of the EGR gas to be supplied into the combustion chamber 5 is more than the amount of the EGR gas in conjunction with the generation amount of the soot to be at the peak (t2 or later). During the second combustion at starting the engine, combustion is executed where the temperature of an exhaust gas from the combustion chamber 5 is relatively high without increasing hydrocarbon in the exhaust gas to make a EGR ratio zero for suppressing the amount of hydrocarbon to be supplied to exhaust gas cleaning catalysts 22, 26a (t0-t1), and then combustion is executed where hydrocarbon in the exhaust gas is increased and the temperature of the exhaust gas from the combustion chamber 5 is relatively high to make the EGR ratio gradually increase for increasing the amount of hydrocarbon to be supplied to the catalysts 22, 26a.

89. 发明专利

JP2000356157A COMPRESSION IGNITION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000356157A
公开(公告)日：2000-12-26
申请号：JP2000166348
申请日：2000-06-02
申请人： TOYOTA MOTOR CORP
发明人： ABE TSUKASA , IKEDA SHINJI , SASAKI SHIZUO , ITO TAKEKAZU
IPC分类号： F02M25/07 , F02D21/08 , F02D41/22 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To prevent the combustion failure in an internal combustion engine in which the inert gas quantity to be supplied into a combustion chamber is increased to increase the generating quantity of soot, by setting the inert gas quantity to be supplied into the combustion chamber larger than the inert gas quantity for peaking the generation of soot, and judging the presence of combustion failure. SOLUTION: In the operation of an internal combustion engine 1, an ECU 30 makes the engine 1, in a low load, perform a first combustion (low temperature combustion) of suppressing the fuel and ambient gas temperatures in combustion to a temperature for stopping the development of HC or lower, or the combustion operation hardly generating soot with the inert gas quantity within a combustion chamber larger than the inert gas quantity for peaking the generation of soot. When the required load exceeds a prescribed value during this operation, the engine 1 is transferred to a second combustion or the combustion operation where the inert gas quantity within the combustion chamber is smaller than the inert gas quantity for peaking the generation of soot. It is judged whether a combustion failure is caused or not in the first combustion, and when the combustion failure is judged, the control is performed to increase the air-fuel ratio or advance the injection start timing.

90. 发明专利

JP2000291462A INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000291462A
公开(公告)日：2000-10-17
申请号：JP35769199
申请日：1999-12-16
申请人： TOYOTA MOTOR CORP
发明人： ITO TAKEKAZU , SASAKI SHIZUO , YOSHIZAKI KOJI
IPC分类号： F02M25/07 , F01N3/02 , F01N3/08 , F01N3/20 , F01N3/24 , F01N3/28 , F01N9/00 , F02B3/06 , F02B37/00 , F02D21/08 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/38 , F02D41/40
摘要： PROBLEM TO BE SOLVED: To discharge well SOX from a NOX absorbent. SOLUTION: First combustion in which EGR gas amount in a combustion chamber 5 is larger than the EGR gas amount having a peak of the soot generating amount and second combustion, in which the EGR gas amount in the combustion chamber 5 is lower than the EGR gas amount, having a peak of the soot generating amount are selectively performed. As absorbent 25 is arranged in an engine exhaust passage. When SOX is discharged from the NOX absorbent, 25 first combustion is performed at the rich air-fuel ratio. When second combustion is performed, auxiliary fuel is injected in the early stage of the intake stroke or during the expansion stroke and also largely delays the injection timing of main fuel.

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