Patents by Inventor Shinichi Soejima
Shinichi Soejima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130282259Abstract: A control apparatus for a supercharged internal combustion engine, which can achieve a target torque accurately even if the target torque contains a high-frequency vibration component. The control apparatus determines a target air quantity and a target boost pressure from a target torque, operates an actuator for air quantity control according to the target air quantity, and operates an actuator for boost pressure control according to the target boost pressure. The target torque is formed to contain a low-frequency torque component that is set at all times based on a torque requirement from a driver and a high-frequency torque component that is set as necessary for a specific type of vehicle control. When the target torque contains only the low-frequency torque component, the target boost pressure is formed using a pressure component corresponding to the low-frequency torque.Type: ApplicationFiled: January 14, 2011Publication date: October 24, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kiyonori Takahashi, Shinichi Soejima, Satoru Tanaka, Satoshi Yoshizaki
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Patent number: 8566008Abstract: A control device for an internal-combustion engine designed to ensure that required responsiveness is obtained as actual torque responsiveness with respect to a torque demand even when the torque responsiveness with respect to the actuation of a particular actuator is affected by the operating conditions. A response compensating filter is provided at a preceding stage to an air inverse model, and the target torque which has been corrected by the response compensating filter is converted by the air inverse model to obtain a target opening degree of a throttle. A time constant of the response compensating filter is set on the basis of the operating conditions of the internal-combustion engine so that the responsiveness of actual torque with respect to the torque demand reaches a preset standard responsiveness.Type: GrantFiled: May 29, 2009Date of Patent: October 22, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Soejima, Ken Koibuchi, Hirotada Otake, Keisuke Kawai
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Patent number: 8515646Abstract: A control apparatus of an internal combustion engine capable of appropriately reflecting various requests relating to the performance of the internal combustion engine. Specifically, the control device of the internal combustion engine acquires various requests relating to the performance of the internal combustion engine, and sets restricted ranges of the value of the control variable in accordance with the details of the requests. At this moment, the control device temporally changes the set restricted ranges for specific requests associated with the time integral value of the control variable rather than the instantaneous value of the control variable. Subsequently, the control device determines a final restricted range on the basis of the overlap between the restricted ranges set for each request, and determines the target value of the control variable in the final restricted range.Type: GrantFiled: February 25, 2010Date of Patent: August 20, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kota Sata, Yasuhiro Oi, Shinichi Soejima, Koichi Ueda, Shuntaro Okazaki, Satoshi Yoshizaki
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Patent number: 8515652Abstract: A control device for an internal combustion engine is provided. The control device includes means which controls fuel injection by a fuel injection device, and means which controls the throttle. The fuel injection control means sequentially restarts fuel injection for each cylinder in accordance with an ignition sequence among cylinders when cancellation conditions of fuel cut are satisfied during implementation of the fuel cut. Meanwhile, the throttle control means firstly controls the throttle to a closing side when the cancellation conditions of fuel cut are satisfied. The throttle is controlled to the closing side, whereby the air amount in the intake pipe is decreased, and the air amount in a cylinder which is the basis of calculation of a fuel injection amount is also decreased.Type: GrantFiled: March 24, 2009Date of Patent: August 20, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Soejima, Naoto Kato, Kaoru Otsuka, Kiyonori Takahashi, Hiroyuki Tanaka, Ryutaro Moriguchi
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Patent number: 8423262Abstract: A vehicle control apparatus includes: an accessory that adjusts torque that is output from an internal combustion engine, by giving load to the internal combustion engine; an ignition timing control portion that is provided so as to adjust ignition timing of the internal combustion engine, and that adjusts the torque output from the internal combustion engine by performing a retardation control of the ignition timing; an accessory load adjustment portion that adjusts an accessory load that is the load given from the accessory to the internal combustion engine; and a catalyst that purifies exhaust gas discharged from the internal combustion engine. The ignition timing control portion reduces the retardation of the ignition timing with increase in temperature of the catalyst. The accessory load adjustment portion increases the accessory load with increase in the temperature of the catalyst.Type: GrantFiled: June 3, 2010Date of Patent: April 16, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koki Matsushita, Shin Noumura, Ken Koibuchi, Kaoru Ohtsuka, Shinichi Soejima
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Patent number: 8401763Abstract: In a control device which uses a specific physical quantity as a control variable of an internal combustion engine, and controls the internal combustion engine by manipulation of one or a plurality of actuators, switching of setting of a manipulation variable based on a required value of a physical quantity and setting of the manipulation variables by direct instruction to individual actuators is performed without generating discontinuity in a realized value of the physical quantity. When a manipulation variable instruction value directly designating a manipulation variable of an actuator is present, the manipulation variable instruction value is converted into a value of a physical quantity which is realized in the internal combustion engine by the operation quantity instruction value.Type: GrantFiled: April 1, 2009Date of Patent: March 19, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Naoto Kato, Shinichi Soejima, Kiyonori Takahashi, Kaoru Ohtsuka
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Publication number: 20120316750Abstract: A control apparatus of an internal combustion engine capable of appropriately reflecting various requests relating to the performance of the internal combustion engine. Specifically, the control device of the internal combustion engine acquires various requests relating to the performance of the internal combustion engine, and sets restricted ranges of the value of the control variable in accordance with the details of the requests. At this moment, the control device temporally changes the set restricted ranges for specific requests associated with the time integral value of the control variable rather than the instantaneous value of the control variable. Subsequently, the control device determines a final restricted range on the basis of the overlap between the restricted ranges set for each request, and determines the target value of the control variable in the final restricted range.Type: ApplicationFiled: February 25, 2010Publication date: December 13, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kota Sata, Yasuhiro Oi, Shinichi Soejima, Koichi Ueda, Shuntaro Okazaki, Satoshi Yoshizaki
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Patent number: 8332122Abstract: A control apparatus for a vehicle drive unit including a control structure of a hierarchical type having a demand generation level, a mediation level, and a control variable setting level and a signal is transmitted in one direction from a higher level of hierarchy to a lower level of hierarchy. The demand generation level includes demand output elements for each capability. The mediation level includes mediation elements, each corresponding to a classified category of demands. Each of the mediation elements collects demand values of the category of which the mediation elements are in charge and performs mediation according to a rule to arrive at a single demand value. The control variable setting level includes an adjuster portion adjusting each of the mediated demand values based on a relationship between each other and control variable calculation elements calculating a control variable of each of a plurality of actuators based on the adjusted demand value.Type: GrantFiled: July 8, 2008Date of Patent: December 11, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Tanaka, Junichi Kako, Kaoru Ohtsuka, Shinichi Soejima, Keisuke Kawai, Naoto Kato, Hayato Nakada
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Patent number: 8326517Abstract: A control device for a spark-ignition internal combustion engine that sets ignition timing based on a target value of a predetermined combustion-related parameter correlated with a combustion state and operates an ignition device in accordance with the ignition timing thus set. The control device calculates an actual value of the combustion-related parameter from an output value of the cylinder pressure sensor and feeds back the calculated value of the combustion-related parameter to the setting of ignition timing. Further, in parallel with the above processing, the control device calculates a value of a predetermined combustion variation parameter correlated with the magnitude of combustion variation from the output value of the cylinder pressure sensor. If the calculated value of the combustion variation parameter deviates from an allowable range of the combustion variation, the control device stops the feedback of the calculated value of the combustion-related parameter.Type: GrantFiled: January 20, 2009Date of Patent: December 4, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Soejima, Naoto Kato, Kiyonori Takahashi
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Publication number: 20120185148Abstract: Disclosed is a control device that is used for an internal combustion engine and capable of making various requests concerning the performance of the internal combustion engine be reflected in a target control amount value while the requests need not be expressed in the form of a requested control amount value. The control device acquires various requests concerning the performance of the internal combustion engine and sets a request-specific constraint on a control amount value. More specifically, the control device expresses constraints to be set for control amount values as a set of constraint index values assigned to individual control amount values, and varies the distribution of the constraint index values assigned to the control amount values in accordance with the type of a request. Next, the control device integrates, for each control amount value, the constraint index values assigned to individual requests with respect to each control amount value.Type: ApplicationFiled: January 14, 2010Publication date: July 19, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kota Sata, Yasuhiro Oi, Shinichi Soejima, Koichi Ueda, Shuntaro Okazaki, Satoshi Yoshizaki
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Publication number: 20120166064Abstract: A required intake air flow rate is converted to a post-model required intake air flow rate (BMtsm) by a base-system normative model, and the inverse model of an intake system model is used to calculate a base-system required throttle opening degree (BTA) so as to achieve the post-model required intake air flow rate (BMtsm). On the other hand, the required in-take air flow rate (Mt) is converted to a post-model required intake air flow rate (HMtsm) by a high-response-system normative model, and the inverse model of the intake system model is used to calculate a high-response-system required throttle opening degree (HTA) so as to achieve the post-model required intake air flow rate (HMTsm). Then, a target throttle opening degree (TAt) is set so as to fall within the range from the base-system required throttle opening degree (BTA) to the high-response-system required throttle opening degree (HTA) and the reduce a variation amount.Type: ApplicationFiled: November 2, 2010Publication date: June 28, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu Yamamoto, Shinichi Soejima, Naoto Kato
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Patent number: 8209104Abstract: This invention is intended to ensure that a control device for a vehicle drive unit is capable of realizing desired torque by making the main-actuator and sub-actuator collaborate adequately while holding the interposition of the sub-actuator as low as possible. For this end, a future target of torque that is going to be output from the engine and a realization timing of the future target are taken as reservation information for reserving engine torque regulation. Next, the required period, which is required to realize the future target when a main-actuator (a throttle) is operated to regulate the torque, is computed from a current engine operating condition. Then, the operation of the main-actuator is started at the timing preceding the realization timing by the required period for realizing the future target.Type: GrantFiled: October 1, 2008Date of Patent: June 26, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Soejima, Junichi Kako, Kaoru Ohtsuka, Hiroyuki Tanaka, Keisuke Kawai
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Patent number: 8209106Abstract: A control apparatus for an internal combustion engine that accurately incorporates demands related to various capabilities of the internal combustion engine. A demand output unit outputs various capability demands of the internal combustion engine, expressed in terms of either torque, efficiency, or an air-fuel ratio data. A torque mediation unit collects only the demand values expressed in terms of torque, and mediates the torque demand values into one. An efficiency mediation unit collects the demand values expressed in terms of efficiency and mediates the efficiency demand values into one. An air-fuel ratio mediation unit collects the demand values expressed in terms of the air-fuel ratio and mediates the air-fuel ratio demand values into one. A control variable computing unit computes control variables of actuators, based upon the torque demand value, efficiency demand value, and air-fuel ratio demand value output from the mediation units.Type: GrantFiled: July 11, 2008Date of Patent: June 26, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kaoru Ohtsuka, Shinichi Soejima, Naoto Kato, Hiroyuki Tanaka, Hayato Nakada, Keisuke Kawai
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Publication number: 20120022770Abstract: A control device for an internal combustion engine is provided. The control device includes means which controls fuel injection by a fuel injection device, and means which controls the throttle. The fuel injection control means sequentially restarts fuel injection for each cylinder in accordance with an ignition sequence among cylinders when cancellation conditions of fuel cut are satisfied during implementation of the fuel cut. Meanwhile, the throttle control means firstly controls the throttle to a closing side when the cancellation conditions of fuel cut are satisfied. The throttle is controlled to the closing side, whereby the air amount in the intake pipe is decreased, and the air amount in a cylinder which is the basis of calculation of a fuel injection amount is also decreased.Type: ApplicationFiled: March 24, 2009Publication date: January 26, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinichi Soejima, Naoto Kato, Kaoru Otsuka, Kiyonori Takahashi, Hiroyuki Tanaka, Ryutaro Moriguchi
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Publication number: 20120010801Abstract: In a control device which uses a specific physical quantity as a control variable of an internal combustion engine, and controls the internal combustion engine by manipulation of one or a plurality of actuators, switching of setting of a manipulation variable based on a required value of a physical quantity and setting of the manipulation variables by direct instruction to individual actuators is performed without generating discontinuity in a realized value of the physical quantity. When a manipulation variable instruction value directly designating a manipulation variable of an actuator is present, the manipulation variable instruction value is converted into a value of a physical quantity which is realized in the internal combustion engine by the operation quantity instruction value.Type: ApplicationFiled: April 1, 2009Publication date: January 12, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoto Kato, Shinichi Soejima, Kiyonori Takahashi, Kaoru Ohtsuka
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Patent number: 8090519Abstract: A control device that is used with an internal combustion engine to improve both the response and controllability of torque generated by the internal combustion engine. The control device calculates an operation amount of an intake actuator in accordance with a demanded air amount. The control device then calculates a torque that is generated when the intake actuator is operated by the calculated operation amount at a predetermined ignition timing setting, and calculates an ignition timing retard amount that is necessary to achieve a demanded torque in accordance with the difference between the calculated torque and the demanded torque. The control device ensures that the demanded torque and a demanded efficiency are both reflected in the demanded air amount.Type: GrantFiled: October 31, 2008Date of Patent: January 3, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Soejima, Naoto Kato, Keisuke Kawai
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Patent number: 8051641Abstract: The present invention has an object to provide an exhaust gas purifying apparatus for an internal combustion engine capable of obtaining accurate temperature information relating to a catalyst placed in an exhaust passage of the internal combustion engine. The degree of influence emthc of a catalyst inlet gas temperature and catalyst rear end temperature ethuf[end] is calculated (Step 102). An estimated value ethco of an outlet gas temperature is calculated by weighted averaging the inlet gas temperature and the catalyst rear end temperature ethuf[end] considering the degree of influence emthc (Step 104). A temperature correction coefficient ekthuf[x] for each region of the catalyst is calculated as a function f(emthc) of the degree of influence emthc (Step 108).Type: GrantFiled: October 13, 2006Date of Patent: November 8, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Denso CorporationInventors: Junichi Kako, Shinichi Soejima, Ryozo Kayama
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Patent number: 8051835Abstract: In a V-type six-cylinder engine, turbo-superchargers are provided for compressing intake air and feeding the compressed air into combustion chambers, and an ECU is operable to switch the combustion mode from a non-supercharged stoichiometric combustion mode to a supercharged lean combustion mode, depending on the engine operating conditions. When switching from the non-supercharged stoichiometric combustion mode to the supercharged lean combustion mode, the ECU retards the ignition timing, and keeps the retard amount of the ignition timing at a constant value if the increasing actual boost pressure becomes equal to or higher than a pre-set target boost pressure.Type: GrantFiled: November 9, 2007Date of Patent: November 8, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Soejima, Yasuyuki Irisawa, Shinichiro Nogawa
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Patent number: 8019524Abstract: A first arbitration unit determines one demand engine torque of static demand engine torques set in a power train driver model and an ECT torque control system. The demand engine torque determined by the first arbitration unit is converted into dynamic demand engine torque by a conversion unit. A second arbitration unit determines demand engine torque for use in control of an engine from among the dynamic demand engine torque converted from the static demand engine torque by the conversion unit, dynamic demand engine torque set by a VDIM system, and dynamic demand engine torque set by a vibration suppression control system. An engine control system controls the engine according to the demand engine torque determined by the second arbitration unit.Type: GrantFiled: October 16, 2009Date of Patent: September 13, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshiya Oishi, Seiji Kuwahara, Shinichi Soejima, Ken Koibuchi
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Patent number: 8010258Abstract: A torque control device for a power system and facilitates the addition of a new torque control actuator. A target torque signal according to a target torque for the power system is distributed to each actuator in a predetermined distribution priority order. A signal processing filter is mounted on a signal input section of each actuator and allows only a portion of distributed signal that matches the operation characteristics of the actuator to pass through as a command signal for the actuator.Type: GrantFiled: September 6, 2007Date of Patent: August 30, 2011Assignee: Toyota Jidossha Kabushiki KaishaInventors: Hiroyuki Tanaka, Keisuke Kawai, Hayato Nakada, Kaoru Ohtsuka, Yuichiro Sawada, Shinichi Soejima