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公开(公告)号：JP2002364350A
公开(公告)日：2002-12-18
申请号：JP2001172984
申请日：2001-06-07
Applicant: TOYOTA MOTOR CORP
Inventor： KINUGASA YUKIO , ITO TAKAAKI , SAKURAI KAZUHIRO , ICHINOSE HIROKI , TSUJI KIMIHISA
Abstract: PROBLEM TO BE SOLVED: To reduce a difference in temperature over the whole part in the vicinity of an exhaust upstream end face of an exhaust purifying catalyst. SOLUTION: In a catalyst temperature raising device for an internal combustion engine in which the exhaust gas purifying catalyst 7 having electric conductivity and a conductive material 9 extending in close proximity to the exhaust upstream end face 8 of the exhaust purifying catalyst 7 are arranged in an engine exhaust passage 2 to induction heat a part 15 in the vicinity of the exhaust upstream end face 8 of the exhaust purifying catalyst 7 by supplying an alternating current to the conductive material 9, a region in which an amount of heat generation by induction heating is below a level determined in advance in the exhaust upstream end face 8 of the exhaust purifying catalyst 7 is made to protrude to form a protruding part 11 in the exhaust purifying catalyst.
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公开(公告)号：JP2002235530A
公开(公告)日：2002-08-23
申请号：JP2001032501
申请日：2001-02-08
Applicant: TOYOTA MOTOR CORP
Inventor： KINUGASA YUKIO , TSUJI KIMIHISA , ITO TAKAAKI , SAKURAI KAZUHIRO , ICHINOSE HIROKI
Abstract: PROBLEM TO BE SOLVED: To rapidly increase temperature near the exhaust upstream end surface of exhaust purifying catalyst by induction heating to an active temperature. SOLUTION: The exhaust purifying catalyst is disposed in an engine exhaust passage, and an electric conductor is arranged along the exhaust upstream end surface of the exhaust purifying catalyst. Alternation current is supplied to the electric conductor, thereby induction heating a part near the exhaust upstream end surface of the exhaust purifying catalyst. Heating value by the induction heating is set different every region of the part near the exhaust upstream end surface, because heat quantity required for raising the temperature of part near the exhaust upstream end surface of exhaust purifying catalyst to a catalytic active temperature is different every region of the part near the exhaust upstream end surface.
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公开(公告)号：JP2000254450A
公开(公告)日：2000-09-19
申请号：JP6360499
申请日：1999-03-10
Applicant: TOYOTA MOTOR CORP
Inventor： KINUGASA YUKIO , SUZUKI HIROMASA
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust gas purifying device and an exhaust gas purifying method that the catalyst is activated by generating heat at a cool starting time and the use life is enhanced. SOLUTION: This device is provided with a catalyst 3 arranged in the midway of an discharge path 2 of an engine 1 and formed by carrying calcium oxide, and the activation of the catalyst 3 is attained by hydration reaction heat of the carried calcium oxide at a cool starting time, and calcium hydroxide, etc., produced with the hydration reaction are decomposed to calcium oxide with heat of the exhaust gas G after the engine is warmed. Then, the calcium oxide supported on the catalyst 3 can be effectively re-utilized as a heat generator.
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公开(公告)号：JPH11153024A
公开(公告)日：1999-06-08
申请号：JP31871997
申请日：1997-11-19
Applicant: TOYOTA MOTOR CORP
Inventor： SAKURAI KAZUHIRO , ITO TAKAAKI , KINUGASA YUKIO , HOSHI KOICHI , TAKEUCHI KOICHI
Abstract: PROBLEM TO BE SOLVED: To diagnose trouble of a temperature adjusting function by providing a pressure detecting means to detect pressure of a vacuum space part and a trouble judging means to judge trouble of an exhaust emission control device on the basis of a detecting value of the pressure detecting means. SOLUTION: A heat accumulating material 35 using a phase changing substance such as lithium chloride as a base material is filled in a space surrounded by an inner cylinder 31 and an intermediate cylinder 32. A vacuum layer 36 surrounded by the inner cylinder 31, the intermediate cylinder 32 and an outer cylinder 33 is formed so as to become a vacuum state. A degree of vacuum is properly set according to a demand for heat insulation of an exhaust emission control catalyst 34. A pressure sensor 29 to output an electric signal corresponding to absolute pressure in the vacuum layer 36 is installed on the outer cylinder 33. In a catalytic device to cut off heat radiation of the exhaust emission control catalyst 34 by the vacuum layer 36, trouble of a heat insulating function of the catalytic device is diagnosed on the basis of pressure of the vacuum layer 36. When trouble of the heat insulating function is judged, a driver is made to recognize the trouble by lighting a warning lamp to urge him to repair and replace the catalytic device.
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公开(公告)号：JPH11153015A
公开(公告)日：1999-06-08
申请号：JP32127497
申请日：1997-11-21
Applicant: TOYOTA MOTOR CORP
Inventor： KINUGASA YUKIO
Abstract: PROBLEM TO BE SOLVED: To add a lubricating oil degradation inhibitor to lubricating oil by slidingly contacting the lubricating oil degradation inhibitor with a member in a lubricating oil circulating passage. SOLUTION: In an internal combustion engine, an inside surface 54 of an inside ring 23 is abraded since an outside surface 52 of a crankshaft 18 contacts with a bearing 20, that is, the inside surface 54 of the inside ring 23. An inhibitor 60 is shaven by slidingly contacting with an outside surface 52 of the crankshaft 18 according to progress of abrasion of the inside surface 54 of the inside surface ring 23 since the inhibitor 60 is arranged so as to become the same plane as the inside surface 54 of the inside surface ring 23. Thus, since the inhibitor 60 is added to lubricating oil, the inhibitor can be added to the lubricating oil by the simple constitution. The degradation of the lubricating oil can be more accurately restrained since the inhibitor is added according to an abrasion degree corresponding to a degradation degree of the lubricating oil.
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Patent Agency Ranking
公开(公告)号：JPH11141329A
公开(公告)日：1999-05-25
申请号：JP30620397
申请日：1997-11-07
Applicant: TOYOTA MOTOR CORP
Inventor： KINUGASA YUKIO , ITO TAKAAKI , SAKURAI KAZUHIRO , HOSHI KOICHI , TAKEUCHI KOICHI
Abstract: PROBLEM TO BE SOLVED: To quickly activate catalyst and improve exhaust emission control performance by providing a heat accumulating member for covering the exhaust purifying catalyst and a heat insulating member for covering the heat accumulating member and the exhaust purifying catalyst and by controlling an engine operating state in such a way as raising the catalyst temperature, when the catalyst temperature is lower than the activating temperature of the exhaust purifying catalyst. SOLUTION: An exhaust purifying catalyst device has a triple structure of an inner cylinder 31, an intermediate cylinder 32, and an outer cylinder 33 and exhaust purifying catalyst 34 is loaded in the inner cylinder 31. A heat accumulating material 35 containing lithium chloride as a base material is loaded between the intermediate cylinder 32 and the inner cylinder 31 and a space 36 inside the outer cylinder 33 is set to a vacuum state, and hydrogen storage alloy 37 which stores hydrogen at a temperature lower than a prescribed temperature and emits the hydrogen at the prescribed temperature or more is arranged in a part of the vacuum layer 36. When a CPU judges that the temperature of the catalyst 34 of the catalyst device is lower than the activation temperature from the output signal of a temperature sensor 30 in a catalyst outlet side is starting an engine, the catalyst is made to warm up such as by delay-compensating the ignition time so as to be activated quickly.
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公开(公告)号：JPH09133037A
公开(公告)日：1997-05-20
申请号：JP29130095
申请日：1995-11-09
Applicant: TOYOTA MOTOR CORP
Inventor： TANAKA HIROSHI , KINUGASA YUKIO , YAEGASHI TAKEHISA , IGARASHI KOHEI , ITO TAKAAKI , SUZUKI NAOTO
Abstract: PROBLEM TO BE SOLVED: To control air-fuel ratio at rich operation time without being influenced by exhaust at lean operation time, so that a fluctuation of air-fuel ratio can be reduced at respective operation time. SOLUTION: Lean/rich operation is alternately repeatedly performed in an engine 1. An air-fuel ration sensor 29 is mounted in a collective part of an exhaust manifold, so as to detect air-fuel ratio. From a delay time after starting an exhaust stroke of each cylinder until its exhaust leads to the air-fuel ratio sensor 29 and cylinder ratio RATIO, it is discriminated whether an output of the air-fuel ratio sensor 29 is detected from exhaust of the cylinder performing lean operation or it is detected from exhaust of the cylinder performing rich operation. Based on an output of the air-fuel ratio sensor detected from exhaust of the cylinder performing lean operation, engine air-fuel ratio of the cylinder performing lean operation is controlled, and based on an output of the air-fuel ratio sensor detected from exhaust of the cylinder performing rich operation, engine air-fuel ratio of the cylinder performing rich operation is controlled.
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公开(公告)号：JPS61137072A
公开(公告)日：1986-06-24
申请号：JP25854784
申请日：1984-12-07
Applicant: Toyota Motor Corp
Inventor： KINUGASA YUKIO
Abstract: PURPOSE: To measure accurately revolution speed of an engine regardless of revolution change of a cam shaft, by detecting from a condition of cam shaft revolutions of a multi-cylinder engine provided with an independent plurality of pairs of cam shafts.
CONSTITUTION: In a multi-cylinder engine provided with an independent plurality of pairs of cam shafts for operating suction and/or exhaust valve (s), revolution speed of the engine is detected from a condition of cam shaft revolutions. At this moment, when the number of cylinders of the engine is assumed to be N, number of pairs of the cam shafts (n), time required for rotated angle of the cam shaft corresponding to the angle of crankshaft : (720/N)×n° CA, namely, for a half of rotated angle of the crankshaft, is measured as Tsec and from this, a number of revolution of the engine V is calculated from the equation: V=60.72.n/360.NT.
COPYRIGHT: (C)1986,JPO&JapioAbstract translation: 目的：通过从设置有独立的多对凸轮轴的多气缸发动机的凸轮轴转速的状态检测，可以精确地测量发动机的转速，而不管凸轮轴的转动变化。 构成：在具有用于操作吸入和/或排气阀的独立的多对凸轮轴的多气缸发动机中，从凸轮轴转速的状态检测发动机的转速。 此时，当假设发动机的气缸数为N时，凸轮轴对数（n），对应于曲轴角度的凸轮轴旋转角所需的时间（720 / N） Xn度 CA，即曲轴的旋转角度的一半被测量为Tsec，并且由此可以从V = 60.72.n / 360.NT计算发动机V的转数。
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公开(公告)号：JPS61129435A
公开(公告)日：1986-06-17
申请号：JP24881884
申请日：1984-11-27
Applicant: Toyota Motor Corp
Inventor： DOMIYO HIROYUKI , KINUGASA YUKIO
Abstract: PURPOSE: To permit the always stable start by varying the increased amount of fuel on start according to the amount of deposit (adhering substance such as minute carbon particles) by installing a means for detecting the amount of adhesion of the deposit onto the suction system of an engine.
CONSTITUTION: When a deposit 21 adheres onto the suction system part of an engine, a portion of the jetted-out fuel is absorbed into the deposit, and the uniformity of the air fuel ratio is disturbed in the transient operation of the engine. Then, a detecting means 1 for detecting the amount of deposit on the basis of the output signal of an O
2 sensor is installed, and a calculating means 4 calculates the correction portion of the fuel injection amount on engine start according to the detected amount of deposit. When a detecting means 2 detects the start of the engine, a calculating means 5 corrects the fuel injection amount calculated in a calculating means 3 by the above-described correction portion according to the operation condition, and then a fuel injection means 6 is controlled according to the fuel injection amount after correction.
COPYRIGHT: (C)1986,JPO&JapioAbstract translation: 目的：通过安装用于检测沉积物吸附系统的附着量的装置，通过根据沉积量（诸如微小碳颗粒的粘附物质）改变起始时燃料量的增加来允许始终稳定的启动 一个引擎 构成：当沉积物21粘附在发动机的抽吸系统部分时，喷射出的燃料的一部分被吸收到沉积物中，并且在发动机的瞬态操作中空燃比的均匀性受到干扰。 然后，安装用于根据O2传感器的输出信号检测沉积量的检测装置1，并且计算装置4根据检测到的沉积量计算发动机起动时的燃料喷射量的校正部分 。 当检测装置2检测到发动机的启动时，计算装置5根据操作条件通过上述校正部分校正在计算装置3中计算的燃料喷射量，然后根据操作条件来控制燃料喷射装置6 到校正后的燃料喷射量。
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10.发明专利
公开(公告)号：JPS61112758A
公开(公告)日：1986-05-30
申请号：JP23286084
申请日：1984-11-05
Applicant: Toyota Motor Corp
Inventor： KINUGASA YUKIO
Abstract: PURPOSE: To stabilize the rotation of an engine when the load thereon is low, by increasing the skipped quantity of a feedback compensation coefficient depending on a deposited quantity on an intake valve when the ratio of fuel to air ischanged from a low value to a high value and vice versa.
CONSTITUTION: When it is judgediin a step 101 that the ratio of fuel to air is low, a step 102 is taken so that a skipped quantity RS
1 and a skip compensation quantity RS
2 are added to a feedback compensation coefficient FAF. If it is judged in a step 105 that the ratio of fuel to air is not low, a step 107 is taken so that the skip compensation quantity RS
2 is added to the feedback compensation coefficient FAF. The skip compensation quantity RS
2 is altered depending on a deposited quantity W to prevent the fluctuation in the rotation of an engine from becoming large in idling. The rotation of the engine under low load is thusstbilized.
COPYRIGHT: (C)1986,JPO&JapioAbstract translation: 目的：为了在发动机负载低时使发动机的旋转稳定，当燃料与空气的比例从低值变化到高时，通过增加取决于进气门上的沉积量的反馈补偿系数的跳过量 值，反之亦然。 构成：当在步骤101中判断燃料与空气的比例低时，采取步骤102，使得跳过量RS1和跳过补偿量RS2被添加到反馈补偿系数FAF。 如果在步骤105中判断燃料与空气的比率不低，则采取步骤107，使得跳过补偿量RS2加到反馈补偿系数FAF。 跳跃补偿量RS2根据沉积量W而改变，以防止发动机的旋转波动变得空转。 因此，在低负载下发动机的转动是有效的。
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