Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Yoshiaki Suzuki

Yoji Kunihiro

Takahiro Kojo

Yoshio Kudo

Masao Ueyama

Takeshi Goto

Yukihide Kimura

Mitsuhiro Murata

Motoaki Kataoka

Hisaya Akatsuka

Daiji Watanabe

Takuya Kataoka

Shinichirou Hirai

Masami Niimi

Shinji Aoki

Toru Takashima

Yoshiaki Tsuchiya

Michio Nishikawa

Theerawat Limpibunterng

Yasuhiro Sagou

Masateru Amano

Shuji Fujita

Masahiro Miyata

Koji Ota

Kimiaki Ono

Keitaro Niki

Ikuo Kushiro

Taro Hirose

Katsuji Kuwada

Haruki Misumi

Toru Suzuki

Akihiro Haraguchi

Susumu Fujii

An electromagnetic switch includes a first and a second solenoid arranged in alignment in an axial direction of a housing and brings a pinion into mesh with a ring gear of an engine and close main contacts in a power supply circuit for an electric motor which cranks the engine. A retainer is provided which extends from a first bobbin of the first solenoid at least to a location of an air gap formed in a magnetic circuit of the second solenoid. The retainer holds a portion of a lead wire extending from a bobbin of the first solenoid at least in a range between the bobbin and the air gap, thereby minimizing inclination or deflection of the lead wire when the first and second solenoids are fabricated within the housing, thus facilitating the ease with which the first and second solenoids are mounted in place in the housing.

Electromagnetic switch for engine starter

A driving support apparatus for a vehicle comprising a steering device that steers steerable wheels, and a control unit configured to execute a running control in which a steered angle of the steerable wheels is changed by controlling the steering device, the control unit being configured to calculate a deviation between an index value of a target running state of the vehicle and an index value of an actual running state, to calculate a target change amount of the steered angle based on the index value deviation, to control the steering device so that a change amount of the steered angle conforms to the target change amount, and to limit a magnitude of a time change rate of the steered angle changed by the running control when one of a magnitude of the index value deviation and a magnitude of the target change amount exceeds a reference value.

Driving support apparatus for vehicle

A driving support device may be configured to calculate a target steering angle for allowing a vehicle to travel along a target course; set, as a reference steering angle, a steering angle when a difference between the steering angle and the target steering angle is small; calculate an indication value indicating intention of a driver's steering operation as a sum of a first product of a corrected steering angle and a steering torque, a second product of a derivative of the corrected steering angle and the steering torque, and a third product of the corrected steering angle and a derivative of the steering torque; and correct the target steering angle based on the indication value so that a target driving support torque is corrected in accordance with the intention of the driver's steering operation.

Driving support device for vehicle including an electric power steering control that generates a steering assist torque

An electromagnetic switch for a starter includes a coil that includes a first lead wire connected to a power supply side and a second lead wire connected to a ground side, the coil being supplied with an energization current through the first and second lead wires to form an electromagnet while a starter relay is on. The electromagnetic switch further includes a surge suppression device that absorbs part of energy emitted from the coil when the starter relay is turned from on to off so that a remaining part of the energy is applied to the starter relay to cause an arc current to flow between contacts of the starter relay.

Electromagnetic switch for starter

An electric power steering system includes a basic assist amount calculation section calculating a basic assist amount for assisting the manipulation of a steering wheel, and an assist compensation amount calculation section calculating an assist compensation amount for correcting the basic assist amount. The system includes an assist amount correction section calculating a corrected assist amount by correcting the basic assist amount based on the assist compensation amount, and a motor drive section driving a motor using the corrected assist amount. The assist compensation amount calculation section uses a reverse input specification that more transmits the signal components of specific frequency in road-surface input torque, to a steering wheel than in the case of using only the basic assist amount, and calculates the assist compensation amount suitable for a vehicle-state value, such as a steering torque, to suppress variation in the transmission characteristics due to variation of the vehicle-state value.

Apparatus and method for controlling electric power steering system

A control device () for an electric power steering device () is configured to: store a basic target return speed (Vrb), which increases in magnitude as the magnitude of a steering angle (&#x3b8;) increases; calculate, when a steering wheel () is being returned to a neutral position, the basic target return speed (Vrb) based on an actual steering angle (Step); calculate a transitional target return speed (Vtrt), which gradually increases in magnitude and gradually approaches the basic target return speed as the magnitude of the actual steering wheel decreases; and control, when the magnitude of a difference between the basic target return speed and the transitional target return speed is more than a reference value, a steering assist torque so that a return speed reaches the transitional target return speed (Stepto Step).

Electric power steering device

A steering intention determination device includes a calculation unit that calculates a value based on the product of a steering angular velocity and a steering torque and the product of a steering angle and the time differential value of the steering torque, and a determination unit that determines that the driver has a turn-and-steer steering intention in a case where the value is equal to or greater than a predetermined value, determine that the driver has a steering holding intention in a case where the value is less than the predetermined value and the absolute value of the steering angular velocity is less than a predetermined angular velocity, and determine that the driver has a switchback steering intention in a case where the value is less than the predetermined value and the absolute value of the steering angular velocity is equal to or greater than the predetermined angular velocity.

Steering intention determination device, vehicle control device, steering assist device, and steering assist system

A drive supporting device includes a supporting device mounted on a vehicle and capable of executing driving support in the vehicle; a steering angle detecting device configured to detect a steering angle of a steering member of the vehicle; a torque detecting device configured to detect a torque acting on a steering shaft portion that rotates with the steering member; and a controller configured to control the supporting device, wherein the controller changes content of the driving support by the supporting device between a case in which a steering power corresponding to a product of a parameter associated with the steering angle detected by the steering angle detecting device and a parameter associated with the torque detected by the torque detecting device is greater than or equal to a reference value set in advance, and a case in which the steering power is smaller than the reference value.

Drive supporting device, operation detecting device, and controller

An electromagnetic relay for starting a motor of a starter includes a resistor to reduce an activation current that flows through the motor from a battery for activation of the motor, a relay contact that causes the starting current to flow while bypassing the resistor, a relay coil that forms an electromagnet when excited by energization, and a control circuit that controls an excited state of the relay coil for activation of the motor to open or close the relay contact, thus controlling energization of the motor from the battery via the resistor. The electromagnetic relay incorporates therein the control circuit.

Electromagnetic relay

A steering device () includes: a steering member () that is provided in a vehicle () and configured to be rotationally operated; an actuator () that generates a torque assisting a steering operation on the steering member (); a detection device () that detects a torque applied to a steering shaft portion () that rotates together with the steering member (); and a steering control device () that performs vibration suppression control to suppress vibrations transmitted to the steering member () by adjusting a torque generated by the actuator (), on a basis of a detected torque that is a torque detected by the detection device (). The steering control device () controls the actuator () such that a torque of a frequency band in a first predetermined range, which corresponds to the detected torque is not suppressed.

Steering device, steering control device, and steering control method

A steering system includes a steering angle detection unit that detects a steering angle of a steering wheel; a steering torque detection unit that detects a steering torque with respect to the steering wheel; an ECU that calculates a corrected steering angle by nonlinearly correcting the steering angle, a first steering parameter as the product of an angular velocity of the steering angle and the steering torque, a second steering parameter as the product of the corrected steering angle and a time differential value of the steering torque, and a target control amount based on the first steering parameter and the second steering parameter; and a steering support unit that applies a rotation torque to the steering wheel based on the target control amount.

Steering control device and steering system

A vehicle steering control apparatus () in a vehicle (), which is provided with: a steering system including at least a rudder angle varying device () capable of changing a relation between a steering angle, which is a rotation angle of a steering wheel (), and a rudder angle of steered wheels and a steering torque assisting device () capable of assisting a driver steering torque; and a power supply source () for supplying electric power to the steering system, is provided with: a limiting device for limiting electric current consumption of the steering torque assisting device if a consumption current value of the steering system is greater than a maximum allowable current value in a case where supply capacity of supplying an electric current in the power supply source is reduced with respect to a reference; and a controlling device for matching a neutral position of the steering wheel with a neutral position of the steered wheels in a situation in which the electric current consumption of the steering torque assisting device is limited.

Vehicle steering control apparatus

When there is no occupant in seats other than a driver seat during a foot mode, an air-conditioning controller executes a single seat concentration mode to prevent blowing of warm air to a passenger seat and a backseat by closing foot outlets on a passenger seat side and a backseat side. In this case, in order to maintain an air volume blown from the foot outlet on a driver seat side when the controller changes the mode from the normal foot mode to the single seat concentration mode, the controller sets a blower level to be lower than in the case of the normal foot mode with respect to the same target blown air temperature.

Vehicular air conditioner

A coordinate-control-gain calculation sectioncalculates a coordinate-control final control torque T_C required to properly control the traveling behavior of a vehicle, and determines a coordinate control gain Kg on the basis of the magnitude of this torque T_C. An arbitration-request determination sectiondetermines the value of an arbitration request flag FRG_A on the basis of the magnitude of the torque T_C and the value of a flag FRG_L output so as to properly control the traveling behavior of a vehicle. On the basis of the value of the flag FRG_A and the magnitude of the coordinate-control arbitration torque Tr determined by use of the gain Kg, an arbitration sectionselects the torque T_C or the torque Tr to be output as a post-arbitration control torque T_F. A post-arbitration drive control sectionsupplies to an electric motor a drive current corresponding to the determined torque T_F.

Growing community of inventors

Shizuoka-ken, Japan

Yoshiaki Suzuki