Patents by Inventor Kohei Dodo
Kohei Dodo 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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Patent number: 11173916Abstract: A control apparatus for a vehicle, which is provided with an engine and drive wheels, is configured, during an inertia running or stop of the vehicle, to execute a control for stopping the engine and/or disconnecting the engine from the drive wheels in each area, depending on whether a condition is satisfied or not. The condition is set based on an information transferred from other vehicle in which the control is executable during an inertia running or stop of the other vehicle. The information includes (a) a location information indicative of the each area and (b) an acceleration representative value representing a required acceleration of the other vehicle required by an operator of the other vehicle in the each area. The acceleration representative value is associated with the location information indicative of the each area.Type: GrantFiled: January 12, 2018Date of Patent: November 16, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kohei Dodo
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Patent number: 10626988Abstract: A control apparatus for a vehicle, which is provided with a drive power source, drive wheels and a continuously variable transmission, includes a friction-force control portion configured to control a friction force acting between a belt and pulleys of the continuously variable transmission, based on a belt-slip information received from an external device located outside the vehicle. The belt-slip information represents at least one belt slippy area in which a belt slippage is more likely to occur in the continuously variable transmission. The friction-force control portion controls the friction force such that the friction force is made larger in the at least one belt slippy area than in other areas in which the belt slippage is less likely to occur in the continuously variable transmission.Type: GrantFiled: January 12, 2018Date of Patent: April 21, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kohei Dodo
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Patent number: 10578209Abstract: A vehicle control apparatus is configured to execute gear shifting in an automatic transmission, in accordance with at least one selected shifting line, which is selected from among at least one first shifting line and at least one second shifting line, depending on (i) acceleration representative information related to an acceleration representative value representing an acceleration of the vehicle required by an operator of the vehicle and (ii) location information related to a current location of the vehicle, wherein each of the at least one first shifting line is a shifting line stored in a storage device provided in the vehicle, and each of the at least second shifting line is a shifting line in which other-vehicle-related information is reflected. The other-vehicle-related information is information received from an external device located outside the vehicle, and related to other vehicle that is at least one vehicle other than the vehicle.Type: GrantFiled: January 30, 2018Date of Patent: March 3, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takaaki Sakai, Kohei Dodo
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Publication number: 20180216727Abstract: A vehicle control apparatus is configured to execute gear shifting in an automatic transmission, in accordance with at least one selected shifting line, which is selected from among at least one first shifting line and at least one second shifting line, depending on (i) acceleration representative information related to an acceleration representative value representing an acceleration of the vehicle required by an operator of the vehicle and (ii) location information related to a current location of the vehicle, wherein each of the at least one first shifting line is a shifting line stored in a storage device provided in the vehicle, and each of the at least second shifting line is a shifting line in which other-vehicle-related information is reflected. The other-vehicle-related information is information received from an external device located outside the vehicle, and related to other vehicle that is at least one vehicle other than the vehicle.Type: ApplicationFiled: January 30, 2018Publication date: August 2, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takaaki SAKAI, Kohei DODO
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Publication number: 20180201266Abstract: A control apparatus for a vehicle, which is provided with an engine and drive wheels, is configured, during an inertia running or stop of the vehicle, to execute a control for stopping the engine and/or disconnecting the engine from the drive wheels in each area, depending on whether a condition is satisfied or not. The condition is set based on an information transferred from other vehicle in which the control is executable during an inertia running or stop of the other vehicle. The information includes (a) a location information indicative of the each area and (b) an acceleration representative value representing a required acceleration of the other vehicle required by an operator of the other vehicle in the each area. The acceleration representative value is associated with the location information indicative of the each area.Type: ApplicationFiled: January 12, 2018Publication date: July 19, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kohei DODO
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Publication number: 20180202551Abstract: A control apparatus for a vehicle, which is provided with a drive power source, drive wheels and a continuously variable transmission, includes a friction-force control portion configured to control a friction force acting between a belt and pulleys of the continuously variable transmission, based on a belt-slip information received from an external device located outside the vehicle. The belt-slip information represents at least one belt slippy area in which a belt slippage is more likely to occur in the continuously variable transmission. The friction-force control portion controls the friction force such that the friction force is made larger in the at least one belt slippy area than in other areas in which the belt slippage is less likely to occur in the continuously variable transmission.Type: ApplicationFiled: January 12, 2018Publication date: July 19, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kohei DODO
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Patent number: 9702381Abstract: A hydraulic control system includes a first oil passage, a first oil pump, a second oil passage, a second oil pump and a check valve. The first oil pump is disposed in the first oil passage. The second oil passage bypasses the first oil pump, includes an intake oil passage and a discharge oil passage, the intake oil passage and the first oil passage are connected to each other at a connection point, and the discharge oil passage includes an air vent hole. The second oil pump is disposed in the second oil passage, configured to take in oil from the intake passage, and configured to discharge the oil into the discharge oil passage. The check valve is provided between the connection point and the air vent hole, configured to restrict flow of the oil from the air vent hole toward the connection point via the second oil pump.Type: GrantFiled: October 24, 2014Date of Patent: July 11, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Morita, Hirofumi Ota, Kohei Dodo, Hideki Kubonoya, Naoki Nishimura
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Patent number: 9050963Abstract: A map is provided that has an unlimited region where a take-off slip-engagement the next time is repeatedly executed indefinitely, a limited region where the take-off slip-engagement the next time is repeatedly executed only once, and a prohibited region where the take-off slip-engagement the next time is prohibited, and has a generated heat amount during the take-off slip-engagement and an elapsed time after the lock-up slip-engagement ends as variables. Therefore, a region in which the take-off slip-engagement the next time had been prohibited because the take-off slip-engagement the next time is unable to be repeatedly executed indefinitely even though it is able to be repeatedly executed only once is made the limited region, so the take-off slip-engagement the next time is allowed to be repeatedly executed only once.Type: GrantFiled: January 16, 2012Date of Patent: June 9, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Dodo, Yoichi Nakashima, Atsushi Muto, Tsuyoshi Fujikane, Keigo Matsubara, Junichi Inoue
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Publication number: 20150113971Abstract: A hydraulic control system includes a first oil passage, a first oil pump, a second oil passage, a second oil pump and a check valve. The first oil pump is disposed in the first oil passage. The second oil passage bypasses the first oil pump, includes an intake oil passage and a discharge oil passage, the intake oil passage and the first oil passage are connected to each other at a connection point, and the discharge oil passage includes an air vent hole. The second oil pump is disposed in the second oil passage, configured to take in oil from the intake passage, and configured to discharge the oil into the discharge oil passage. The check valve is provided between the connection point and the air vent hole, configured to restrict flow of the oil from the air vent hole toward the connection point via the second oil pump.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Inventors: Hiroki Morita, Hirofumi Ota, Kohei Dodo, Hideki Kubonoya, Naoki Nishimura
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Publication number: 20140018209Abstract: A map is provided that has an unlimited region where a take-off slip-engagement the next time is repeatedly executed indefinitely, a limited region where the take-off slip-engagement the next time is repeatedly executed only once, and a prohibited region where the take-off slip-engagement the next time is prohibited, and has a generated heat amount during the take-off slip-engagement and an elapsed time after the lock-up slip-engagement ends as variables. Therefore, a region in which the take-off slip-engagement the next time had been prohibited because the take-off slip-engagement the next time is unable to be repeatedly executed indefinitely even though it is able to be repeatedly executed only once is made the limited region, so the take-off slip-engagement the next time is allowed to be repeatedly executed only once.Type: ApplicationFiled: January 16, 2012Publication date: January 16, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Dodo, Yoichi Nakashima, Atsushi Muto, Tsuyoshi Fujikane, Keigo Matsubara, Junichi Inoue
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Publication number: 20130192400Abstract: An electric vehicle drive system in which an electric motor is accommodated within a motor chamber that is formed so as to be separated from a gear chamber by a partition within a case, and a transmission device that transmits power from the electric motor to an axle is accommodated within the gear chamber includes a rotation member that is disposed apart from the partition with a predetermined clearance within the gear chamber, and connected to an output shaft of the electric motor. The partition has a first communication hole that is formed at a position radially inward of a most outward point of the rotation member in a radial direction, and that provides communication between the gear chamber and the motor chamber.Type: ApplicationFiled: October 13, 2011Publication date: August 1, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Dodo, Takaaki Sakai
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Patent number: 7987956Abstract: A transmission ECU calculates a differential rotation, which is the rotational speed difference between a friction plate and a separator plate, when it is determined that a second brake is not engaged. If it is determined that the differential rotation is equal to or above a predetermined value, the transmission ECU narrows the pack clearance of the second brake. If it is determined that the differential rotation is less than the predetermined value, the transmission ECU widens the pack clearance of the second brake.Type: GrantFiled: September 5, 2008Date of Patent: August 2, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventor: Kohei Dodo
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Publication number: 20100200356Abstract: A wet friction plate includes a disc-shaped core plate; and a plurality of friction members arranged in a circle at intervals, on a surface of the core plate. A first oil groove is formed on a friction surface of at least one of the friction members, and the first oil groove communicates with only an inner peripheral side surface of the at least one friction member, which is closest to an inner periphery of the core plate among side surfaces of the at least one friction member. The first oil groove includes a circumferential groove that extends in a circumferential direction of the core plate, and at least one radial groove that extends in a radial direction of the core plate, and is connected to the circumferential groove, and that communicates with the inner peripheral side surface of the at least one friction member.Type: ApplicationFiled: February 8, 2010Publication date: August 12, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventor: Kohei Dodo
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Publication number: 20090065321Abstract: A transmission ECU calculates a differential rotation, which is the rotational speed difference between a friction plate and a separator plate, when it is determined that a second brake is not engaged. If it is determined that the differential rotation is equal to or above a predetermined value, the transmission ECU narrows the pack clearance of the second brake. If it is determined that the differential rotation is less than the predetermined value, the transmission ECU widens the pack clearance of the second brake.Type: ApplicationFiled: September 5, 2008Publication date: March 12, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kohei Dodo