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71. 发明专利

JPH02176138A AIR-FUEL RATIO CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH02176138A
公开(公告)日：1990-07-09
申请号：JP22049588
申请日：1988-09-05
申请人： TOYOTA MOTOR CORP
发明人： MATSUSHITA SOICHI , KOTANI TAKESHI , TAKIMOTO TOSHIYUKI
IPC分类号： F02D41/06 , F02D41/14 , F02D41/34
摘要： PURPOSE:To stabilize an air-fuel ratio after warming up run by updating, by a learning means, a learning value per temperature region, which is provided in every temperature region of an engine, so that a torque fluctuating rate becomes a prescribed value, and adjusting the air-fuel ratio in response to the above learning value per temperature region by an air-fuel ratio adjusting means, when an engine is in the state of warming up run. CONSTITUTION:The torque fluctuating rate of an engine is calculated by a torque fluctuating rate calculating means, and it is discriminated by a warming up condition discriminating means whether the engine is in a warming up condition or not. As a result, a learning value Wi per temperature region, which is provided in every temperature region of the engine, is updated by a learning means so that the torque fluctuating rate becomes a prescribed value. Further, when the engine is in the warming up condition, an air-fuel ratio of the engine is adjusted by an air-fuel ratio adjusting means, in response to the learning value Wi per temperature region. Namely, during warming up, the learning value per temperature region is updated, therefore, since an air-fuel ratio lean limit control is operated in response to the temperature of the engine, the air-fuel ratio after warming up is stabilized without influencing a learning per load region after warming up, so that emission of HC, CO, NOx, fuel consumption and the like can be prevented from worsening.

72. 发明专利

JPH0299743A OPERATION STATE DETECTOR FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0299743A
公开(公告)日：1990-04-11
申请号：JP25199288
申请日：1988-10-07
申请人： TOYOTA MOTOR CORP
发明人： KOTANI TAKESHI , TAKIMOTO TOSHIYUKI , MATSUSHITA SOICHI
IPC分类号： F02D45/00
摘要： PURPOSE:To lighten the load of a CPU by selecting an angle interrupting A/D conversion means which A/D-converts the output signals of a sensor group according to the output signal of a crank angle sensor and a time interrupting A/D conversion means which A/D-converts the output signals of the sensor group by using the A/D converter at each prescribed time, according to the prescribed operation state of the engine. CONSTITUTION:In an internal combustion engine equipped with an A/D converter equipped with a multiplexor built-in which A/D-converts the output voltage of a sensor group for detecting the operation state of the internal combustion engine, an angle interruption A/D converting means A/D-converts the output signals of the sensor group according to the signal of a crank angle sensor by the A/D converter, and a timing interruption A/D converting means performs A/D-converts at each prescribed time. A selecting means selects the angle A/D- conversion means, if N1 =N2, the time interrupting A/D conversion means is selected. Thus, the load of a CPU can be lightened.

73. 发明专利

JPH0275743A CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0275743A
公开(公告)日：1990-03-15
申请号：JP22638288
申请日：1988-09-12
申请人： TOYOTA MOTOR CORP
发明人： TAKIMOTO TOSHIYUKI , KOTANI TAKESHI , MATSUSHITA SOICHI
IPC分类号： F02D41/04 , F02D41/14 , F02D45/00 , F02P5/15
摘要： PURPOSE:To improve stability and responsiveness of an internal combustion engine by controlling a control factor of the engine according to an average of a torque change rate and a maximum value of torque change rate on which a large rate of torque decrease is influenced. CONSTITUTION:During operation of an internal combustion engine, a torque TRQ of the engine is detected by a torque detecting means A. A torque change rate DELTATRQ per a cycle is computed from the detected torque TRQ by an every cycle torque change rate computing means B. By an average torque change rate computing means C, average or annealed value in a specified period, for instance, ten cycles of the torque change rate DELTATRQ is computed as a first value DELTATRQ 10, while by a torque change rate maximum value computing means D, a maximum value DELTATRQM within a specified period, for instance, ten cycles, is computed as a second value. Control factor of the engine is adjusted according to the first and second values DELTATRQ 10, DELTATRQM by an adjusting means E.

74. 发明专利

JPH0230955A OUTPUT FLUCTUATION DETECTING DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0230955A
公开(公告)日：1990-02-01
申请号：JP30680688
申请日：1988-12-06
申请人： TOYOTA MOTOR CORP
发明人： KOTANI TAKESHI , TAKIMOTO TOSHIYUKI , HIYOUDOU YOSHIHIKO , MATSUSHITA SOICHI
IPC分类号： F02D41/36 , F02D45/00
摘要： PURPOSE:To improve the operation control precision of an engine by calculating the ratios between the required time of the explosion stroke for individual cylinders and the average value of this required time for all cylinders at the time of the fuel feed and at the time of the fuel cutoff and detecting output fluctuations of individual cylinders in response to the difference of the ratios. CONSTITUTION:A fuel feed judging means A judging whether fuel is fed to an internal combustion engine or not is provided, when the fuel feed is judged, the required time of the explosion stroke for each cylinder is determined and the ratio between the required time for each cylinder and the average value of this required time for all cylinders is calculated by the first ratio calculating means B. On the other hand, when the fuel cutoff is judged, the required time of the explosion stroke for each cylinder is determined and the ratio between the required time for each cylinder and the average value of this required time for all cylinders is calculated by the second ratio calculating means C. Output signals of the calculating means B and C are inputted to an output fluctuation detecting means D, output fluctuations of individual cylinders are detected in response to the difference of the ratios thus calculated.

75. 发明专利

JPH01290946A CONTROL DEVICE FOR MULTI CYLINDER INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH01290946A
公开(公告)日：1989-11-22
申请号：JP11938688
申请日：1988-05-18
申请人： TOYOTA MOTOR CORP
发明人： TAKIMOTO TOSHIYUKI , KOTANI TAKESHI , MATSUSHITA SOICHI
IPC分类号： F02D41/14 , F02D41/00 , F02D41/34 , F02D43/00 , F02P5/15
摘要： PURPOSE:To provide possibility of deciding the air fuel ratio of a multi-cylinder internal-combustion engine, which performs simultaneous injection or group injection, further to a leaner side by increasing or decreasing the fuel amount so that the amount of change in the output torque made uniform becomes the set value. CONSTITUTION:In an internal-combustion engine with the ignition sequence set from No.1 to No.3, 4, and 2, a driver circuit 46 is connected with the fuel injection valves 28 for No.1, 4 cylinders while another driver circuit 47 with fuel injection valves 28 for No.2, 3 cylinders, and thus group injection takes place. A control device 40 calculates the torque change amount of each cylinder from the sensing value given by a pressure sensor 24. The ignition timing with an ignition plug 22 furnished on a cylinder with larger torque change is angle advanced to make the torque change even. Then the valve opening timings for the fuel injection valves 28 are controlled so that the torque change made even becomes the set value, and the fuel amount is increased or decreased. Thus the fuel injection amount is controlled for the group of cylinders with their torque changes made even, so that the air fuel ratio can be decided to the lean side.

76. 发明专利

JPS6425279A GRAPHIC PROCESSOR 失效
公开(公告)号：JPS6425279A
公开(公告)日：1989-01-27
申请号：JP18184887
申请日：1987-07-21
申请人： TOYOTA MOTOR CORP
发明人： KOTANI TAKESHI
IPC分类号： G06F17/50 , G06T11/80
摘要： PURPOSE:To take out graphic element data at high speed from a graphic data base by referring to a display managing table, understanding the storing position of the desired graphic element data and taking out the graphic element data. CONSTITUTION:The graphic element data is extracted from the graphic data base M1 and displayed on a graphic display means M2. The storing positions of the graphic data base M1 of the respective graphic element data displayed by the graphic display means M2 are stored in the display managing table M4 by a storing position storing means M5. The desired graphic element data is selected from the graphic data displayed on the graphic display means M2 by an element data taking-out means M3, the storing position of the graphic element data is understood by referring to the display managing table M4, thereby, the desired graphic element data is taken out from the graphic data base M1.

77. 发明专利

JPS63195349A AIR-FUEL RATIO CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63195349A
公开(公告)日：1988-08-12
申请号：JP2482287
申请日：1987-02-06
申请人： TOYOTA MOTOR CORP
发明人： KOTANI TAKESHI , MATSUSHITA SOICHI
IPC分类号： F02D41/14 , F02D41/00
摘要： PURPOSE:To increase the control speed in the cooling time, and to improve the controllability regardless of the attachment of fuel to the wall surface of an intake pipe, by setting the control speed responding to the engine temperature related to the warm-up condition, in the air-fuel ratio feedback control. CONSTITUTION:A control circuit 44 computes a basic fuel injection quantity depending on the rotation frequencies from crank angle sensors 46 and 48, and the detected value from a suction pipe pressure sensor 49, and carries out the feedback control of air-fuel ratio depending on the detected value of an O2 sensor 58, when the feedback control condition other than the acceleration, the deceleration, and the warm-up conditions are accomplished. The control circuit 44 improves the responsiveness depending on the detected value from a water temperature sensor 54, making the proportional constant and the integral constant in the air-fuel ratio feedback control system in large values, for example, in the warm-up condition when the water temperature is 50 deg.C or less.

78. 发明专利

JPS58195013A Helical suction port 失效
标题翻译：螺旋抽吸口
公开(公告)号：JPS58195013A
公开(公告)日：1983-11-14
申请号：JP7747482
申请日：1982-05-11
申请人： Toyota Motor Corp
发明人： NAKANISHI KIYOSHI , OKUMURA TAKESHI , KANDA MUTSUMI , KOTANI TAKESHI , INOUE TOKUTA
IPC分类号： F02B31/00 , F02B1/04 , F02B31/08 , F02F1/42
CPC分类号： F02F1/4228 , F02B1/04 , F02B31/082 , Y02T10/146
摘要： PURPOSE:To provide high charging efficiency by shutting off a branch passage at a low-speed and low load run of an engine to have an ample flow of mixture fed along the upper wall face of a helical part, generating an intense swirl in a combustion chamber, and by opening the branch passage at a high-speed and high-load run thereof to supply a great amount of mixture. CONSTITUTION:At a low-speed and low-load run of an engine, a rotary valve 25 is kept closed so that some of mixture flows along the upper wall 19 and 20 while a part of the rest runs against the rotary valve 25 and is turned towards the side wall face 17, generating a swirled flow. At a high-speed and low-speed run thereof, the rotary valve 25 is opened so that the mixture flows between the first side wall face 14a and a side wall face 17 in the form of three streams, one along the upper wall face 20, the next one led by branch passage 24 and the lost one along the bottom wall face 21. In the section view of a suction port 6 at the proximity to a switching valve, the height of a separation wall 12 is made approximately a half of that of the suction port 6.
摘要翻译：目的：通过在发动机的低速和低负载运行下关闭分支通道以提供高的充电效率，以使得沿着螺旋部分的上壁面进料的大量混合物流，在燃烧中产生强烈的涡流并且通过在高速和高负荷运行时打开分支通道以提供大量的混合物。构成：在发动机的低速和低负载运行中，旋转阀25保持关闭，使得一些混合物沿着上壁19和20流动，同时其一部分抵靠旋转阀25延伸并且是转向侧壁面17，产生旋流。在高速低速行驶时，旋转阀25打开，使得混合物以三股流的形式在第一侧壁面14a和侧壁面17之间流动，一个沿着上壁面20 ，下一个由分支通道24引导，而失去的一个沿着底壁面21。在吸入口6靠近切换阀的截面图中，分隔壁12的高度约为吸入口6。

79. 发明专利

JPH10306739A POWER OUTPUT DEVICE, PRIME MOVER CONTROL DEVICE AND CONTROL METHOD THEREFOR 失效
公开(公告)号：JPH10306739A
公开(公告)日：1998-11-17
申请号：JP29354197
申请日：1997-10-09
申请人： TOYOTA MOTOR CORP
发明人： SASAKI SHOICHI , KOTANI TAKESHI , YAMAOKA MASAAKI , TAKAOKA TOSHIBUMI , YAMAGUCHI KATSUHIKO , KANAI HIROSHI
IPC分类号： F02D29/02 , B60K1/02 , B60K6/20 , B60K6/365 , B60K6/38 , B60K6/40 , B60K6/445 , B60K6/448 , B60K6/52 , B60K17/356 , B60L15/02 , B60L50/15 , B60L50/16 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , B60L11/14
摘要： PROBLEM TO BE SOLVED: To reduce the rotating speed of a prime mover rapidly to the value zero at the time of stopping the operation of the prime mover in a power output device composed of the prime mover, a triaxial power input-output means and two motors. SOLUTION: A power output device 110 is provided with a planetary gear 120, an engine 150 with a crankshaft 156 connected to the planetary gear 120, a motor MG1 fitted to a sun gear, and a motor MG2 fitted to a ring gear. When the stop of the engine 150 is commanded, fuel injection to the engine 150 is stopped, and the motor MG1 is so controlled that torque in a reverse direction to the rotating direction of the crankshaft 156 acts upon the crankshaft 156 through the planetary gear 120 and a carrier shaft 127 until the rotating speed of the engine 150 becomes close to the value zero. As a result, the rotating speed of the engine 150 can be rapidly reduced to the value zero.

80. 发明专利

JPH08246878A CYLINDER INJECTION TYPE SPARK IGNITION ENGINE 失效
公开(公告)号：JPH08246878A
公开(公告)日：1996-09-24
申请号：JP4977595
申请日：1995-03-09
申请人： TOYOTA MOTOR CORP
发明人： KOTANI TAKESHI
IPC分类号： F02P15/08 , F02B23/08 , F02B23/10 , F02B31/00 , F02B75/12 , F02F3/26 , F02M69/00
摘要： PURPOSE: To always realize excellent stratified combustion, and reduce fuel consumption by igniting an engine by using a first spark plug in the vicinity of a combustion chamber side surface when a fuel injection quantity is less than a prescribed value, and by using a second spark plug separate to the swirl downstream side when the fuel injection quantity is not less than a prescribed quantity. CONSTITUTION: A recess-shaped combustion chamber 7 eccentric to the opening part side of a straight port 3a is formed on a top surface of a piston 1, and a first spark plug 8a positioned in an almost cylinder center upper part in the last stage of a compression stroke, is arranged in a position in the vicinity of a side surface of this combustion chamber 7. A second spark plug 8b is arranged in a position separate to the more swirl downstream side than a position of the first spark plug 8a in the vivinity of a side surface of the combustion chamber 7. The spark plugs are switched to/from each other so that the first spark plug 8a is used when a fuel injection quantity is less than a first prescribed value and the second spark plug 8b is used when the fuel injection quantity is not less than the first prescribed value and is less than a second prescribed value, and a stratified combustion realizable operation area is expanded.

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