Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Nippon Soken, Inc.

Hideto Watanabe

Yasuo Shimizu

Yoshimitsu Yokouchi

Eiji Ichioka

Kunio Takeda

Tetsuo Hori

Masayuki Tanaka

Hideaki Komada

Masahiro Kojima

Hiroshi Hata

Masataka Sugiyama

Taku Harada

Kenji Odaka

Takashi Shimizu

Takemi Tamura

Shigeru Kamio

Hajime Kato

Takahiko Tsutsumi

Koki Ueno

Naoki Hakamada

Shinichi Kojima

Takeshi Miyagawa

Eiji Isobe

Kazunori Uchiyama

Kenji Miyasaka

Hiroyuki Tsukamoto

Makoto Tomita

Tetsuya Yoshikawa

Fumimori Imaeda

Masanori Shimizu

Shingo Uchiyama

Hirokazu Nishimura

Kouichi Sugizaki

The technology disclosed in the present specification is embodied as a support device for supporting maintenance on an apparatus including an expendable component. The support device includes at least one computer. The at least one computer executes: a process of acquiring an index indicative of a consumption level of the expendable component; a process of, at a time point when the index indicative the consumption level reaches a predetermined threshold, specifying a necessary period of time required for replacement of the expendable component at the time point; and a process of restricting an operation of the apparatus when a remaining period of time of the expendable component, the remaining period of time being associated with the threshold, is shorter than the necessary period of time required for the replacement.

Support device

It is provided a control device of a hybrid type vehicle power transmission device having a prime mover and an electric motor each coupled to a drive shaft in a power transmittable manner, including: a slow change processing means, when any of a torque of the drive shaft, a torque of the prime mover, and a torque of the electric motor changes and passes through zero, slowly changing the torque at a change rate set in advance for suppressing gear rattling noise; and a torque compensating means, if the slow change processing means slowly changes the torque of one of the prime mover and the electric motor, compensating a shortage of the torque of the drive shaft occurring due to the slow change with the other torque not slowly changed.

Control device of vehicle power transmission device

A powertrain includes: an engine provided with a plurality of cylinders; a first motor generator coupled to an output shaft of the engine; and an ECU for controlling them. When misfire in the engine is detected, the output shaft of the engine is rotated by driving the first motor generator with ignition and supply of fuel to the engine being suspended.

Powertrain, method for controlling powertrain, and device for controlling powertrain

HV-ECU executes a program including a step of executing rattling noise avoidance control when an engine operating point falls within a rattling noise producing range and when a requested torque Treqfalls within the rattling noise producing range, and a step of executing normal control when the engine operating point does not fall within the rattling noise producing range or when the requested torque Treqdoes not fall within the rattling noise producing range.

Vehicle control device and vehicle control method

When the variation of the knock control system learning value is large, an idle speed learning control is performed in a learning acceleration mode. In this mode, the idle speed learning update increases and idle speed learning is performed at a high speed. By performing the idle speed learning in the learning acceleration mode, the idle speed learning can immediately follow large variations of the knock control system learning value. Accordingly, the idle speed learning control performed during idling of a hybrid car can be completed in a short time, and fuel consumption during idling can be reduced.

Control device for internal combustion engine

When the condition for starting an engine () is satisfied, the controller () executes the lock switching control in which the wheels () are forcibly locked by the brake device () and the parking lock mechanism () is released to unlock the driveshaft (step S, step S), and then the controller () executes the cranking control (step S) in which the engine () is started by the motor-generator (MG).

Vehicle driving apparatus and control method for same

A hybrid vehicle includes an engine that is an internal combustion engine, a motor generator that is a rotating electric machine used together with the engine for driving the vehicle, an output shaft transmitting power to a wheel, a transmission member coupled to the output shaft, a power split device splitting the output from the engine to the motor generator and transmission member, a detection device detecting irregularities on a road, and a control unit reducing, when the detected result by the detection device indicates generation of periodic torque variation at the output shaft, the output from the engine based on the detected result. Accordingly, a hybrid vehicle that does not require a torque limiter is provided.

Hybrid vehicle

A hybrid control controller stores vehicle speed influence values that have been set according to vehicle speeds, a first threshold value of a sum value of the vehicle speed influence values, a second threshold value lower than the first threshold value, and an engine start reference vehicle speed, and during EV running, sums the vehicle speed influence values from moment to moment. The hybrid control controller starts the engine in a case where the sum value is no less than the first threshold value, and in a case where the sum value is no less than the second threshold value and the vehicle speed is no more than an engine start reference vehicle speed.

Control apparatus of vehicle drive apparatus and plug-in hybrid vehicle

When a hybrid ECU determines that a malfunction in which a moment-adding flywheel cannot be connected to an engine occurs, an engine ECU controls a rotational speed of the engine to a value higher than that in a normal operation. Further, when the hybrid ECU determines that a malfunction in which the moment-adding flywheel cannot be disconnected from the engine occurs, a control is executed so that a ratio of a torque of a first motor to a torque of the engine is higher than that in the normal operation.

Vehicle powertrain, controller thereof, and method for controlling vehicle powertrain

A hybrid vehicle can be driven using both of respective driving forces from an engine and a motor. A heating mechanism of an air conditioning apparatus uses thermal energy from cooling water of the engine to heat the interior of a passenger compartment. An ECU takes into consideration engine efficiency from the standpoint of fuel economy enhancement to primarily determine the driving force share ratio between the engine and the motor. Further, the ECU calculates a preset temperature corresponding to a cooling water temperature necessary for desired heating as well as a control target temperature in which the preset temperature is reflected, and corrects the primarily determined driving force share ratio to increase the share of the driving force of the engine by an amount according to a deviation between the cooling water temperature measured by a water temperature sensor and the control target temperature. Heating performance can thus be ensured promptly without deterioration of fuel economy.

Heating control system for vehicle

A transmission includes: a plurality of rotating elements interposed between a driving source and an output portion; a rotating member that rotatably supports one of the rotating elements and is formed at a radially outer portion thereof with a plurality of recesses or protrusions; a support member having a surface, that is facing the rotating member, and a plurality of protrusions or recesses that are formed in a radially inner portion thereof and engage with the recesses or protrusions of the rotating member, the rotating member being mounted in the support member such that the rotating member is not able to rotate; and a friction producing mechanism that is provided between the rotating member and the above-indicated surface of the support member and is arranged to produce a frictional force between the rotating member and the surface of the support member.

Transmission and power transmitting system

A control apparatus for a hybrid vehicle includes a required torque calculating portion that calculates required drive torque required of the vehicle; a running mode switching portion that switches between a motor running mode and a hybrid running mode according to the calculated required drive torque; a torque distribution control portion that sets the torque distribution between front and rear wheels according to the switched running mode; a gear noise preventing portion that prevents gear noise in a gear mechanism by changing the set torque distribution between the front and rear wheels when a predetermined gear noise producing condition is satisfied; and a drive torque control portion that calculates drive torques of the front and rear wheels based on the calculated required drive torque and the changed torque distribution and controls the torques of the engine and the electric motor.

Control apparatus and control method for hybrid vehicle

A planetary gearset provided with a sun gear, a ring gear, and a carrier that rotatably retains a plurality of pinion gears arranged between the sun gear and the ring gear as elements, in which one of the elements is made a fixed element and one of the other elements is made a rotating element, and which transmits torque between that rotating element and an external member provided in a location eccentric with respect to that rotating member. The planetary gearset is constructed such that the fixed element is movably retained in the direction of a load from the transmission of torque between the rotating element and the external member, and the load from the transmission of torque between the rotating element and the external member is received by a fixed portion that rotatably retains that rotating element.

Planetary gearset

When at least one of a condition under which a parking brake is activated, a condition under which a shift lever is shifted to a parking range, a condition under which a shift to the neutral range is executed, and a condition under which a drive termination operation is executed is satisfied during an EV travel mode, a carrier shaft provided coaxially with a crankshaft is rotated by a motor generator, and a cumulative value of a travel distance counter obtained when an engine is stopped is reset.

A shield member () is arranged on the rotor end face () of an electric rotating machine (). As the rotational velocity of a rotor () increases, the shield member () moves outward in the radial direction of a rotating shaft () to cover a part of the opening () of a slot (). The shield member () controls inflow of lubricant from a portion in the axial-direction of the rotating shaft () on the outside of the rotor end face () to the slot (). Rotational resistance of the rotor () caused by stirring of lubricant can be reduced during high velocity rotation of the rotor ().

Growing community of inventors

Toyota, Japan

Hideto Watanabe