Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Koyo Seiko Company, Ltd.

Other

Jfe Steel Corporation

Hiroshi Kawaguchi

Shuho Nishina

Yoshihisa Nomura

Nobuyoshi Sugitani

Akio Okada

Kiyoshi Nishiwaki

Yoshihiko Tsuzuki

Hiroyuki Nakamura

Kohji Nishikawa

Nobuyo Kondo

Hiroaki Takeuchi

Shiro Nakano

Fujio Toba

Nobuyasu Nakanishi

Koji Nishikawa

Kei Sakata

Masayoshi Katagiri

Katsutoshi Nishizaki

Shoji Inagaki

Akio Sato

Mitsuhiko Nishimoto

Shunsuke Toyoda

Shirou Monzaki

Takayuki Kato

Hideki Higashira

Manabu Takaoka

Hideyuki Hayashi

Shigemi Sakakibara

Masashi Ohta

Yoshinori Mori

Eiji Miura

Yukio Honda

Takashi Baba

Masaki Sanayama

Kouichi Kaneko

Masayuki Motobe

A vehicle structure according to an aspect of the present disclosure includes: a body; a bumper reinforcement disposed at a front or a rear of the body; and a crash box, one end of the crash box being joined to an outer end of the body in a front-rear direction and the other end of the crash box being joined to the bumper reinforcement, in which at least one of the body and the crash box is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate is formed on a contact surface between the body and the crash box.

Vehicle structure and method for manufacturing vehicle

A vehicle floor structure, in one aspect, includes a floor pan, an upper surface-side reinforcing member joined to an upper surface of the floor pan, and a lower surface-side reinforcing member joined to a lower surface of the floor pan. The floor pan is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate includes a first resin layer formed on the upper surface of the floor pan and a second resin layer formed on a part of the lower surface of the floor pan that is in contact with the lower surface-side reinforcing member.

Vehicle floor structure and method for manufacturing vehicle

A vehicle floor structure according to an aspect of the present disclosure is a vehicle floor structure including: a floor pan; an upper surface-side reinforcing member joined to an upper surface of the floor pan; and a lower surface-side reinforcing member joined to a lower surface of the floor pan. The floor pan is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate is formed on the upper surface thereof but is not formed on the lower surface thereof. The lower surface-side reinforcing member is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate is formed on a surface thereof in contact with the floor pan.

A steel having excellent formability, fatigue endurance after quenching, low temperature toughness, resistance for hydrogen embrittlement, and corrosion fatigue endurance. A method includes heating a steel slab at 1160&#xb0; C. to 1320&#xb0; C., hot-finish-rolling the steel slab at a finisher delivery temperature of 750&#xb0; C. to 980&#xb0; C., and then coiling the hot-rolled steel at a coiling temperature of 560&#xb0; C. to 740&#xb0; C. after slow cooling for a time of 2 seconds or more to produce a hot-rolled steel strip having a structure in which the ferrite grain diameter df corresponding to a circle is 1.1 &#x3bc;m to less than 1.2 &#x3bc;m and the ferrite volume fraction Vf is 30% to 98%, the steel slab containing 0.18 to 0.29% of C, 0.06 to 0.45% of Si, 0.91 to 1.85% of Mn, 0.019% or less of P, 0.0029% or less of S, 0.015 to 0.075% of sol. Al, 0.0049% or less of N, 0.0049% or less of O, 0.0001 to 0.0029% of B, 0.001 to 0.019% of Nb, 0.001 to 0.029% of Ti, 0.001 to 0.195% of Cr, and 0.001 to 0.195% of Mo so that the carbon equivalent Ceq satisfies a value of 0.4 to less than 0.58, and the total x of multiplying factors including that for B according to Grossmann satisfies a value of 1.2 to less than 1.7.

Steel for structural part of automobile and method for producing the same

A steering apparatus for automobiles having steering operating means which is not mechanically connected to a steering mechanism, a pair of steering motors provided to different positions in the steering mechanism, and a steering control unit for distributing a necessary steering force which is obtained on the basis of a deviation between an operating position of the steering operating means and an actual operating position of the steering mechanism in a prescribed ratio so as to determine target values of the outputs of the steering motors.

Steering apparatus for automobile

The present invention permits the status of reverse running of a vehicle to be detected accurately, because whether the vehicle is in reverse running or not is determined based on a relation between a direction of lateral acceleration and a direction of yaw rate.

Reverse determination method of vehicle and vehicle control apparatus

A steering control apparatus of the present invention has an actuator interposed in a steering system between a steering wheel and road wheels, for exerting a driving force on the steering system, and a phase control for controlling the phase of a steering reaction force acting on the steering wheel through the steering system, and can thus control a hysteresis width in a steering-wheel angle versus steering reaction force characteristic, whereby the hysteresis width can be set arbitrarily and changed suitably.

Steering control apparatus

A steering control apparatus of the present invention comprises: a steering shaft on which a steering effort is exerted through a steering wheel; a steering angle detecting device for detecting a steering angle which is an angle of rotation of the steering shaft; a steering shaft driving device for rotating the steering shaft; a steering effort detecting device for detecting the steering effort exerted on the steering shaft through the steering wheel; a turning device for turning a steered wheel, based on the steering angle, the turning device being mechanically separated from the steering shaft; a turning reaction force detecting device for detecting a turning reaction force exerted on the steered wheel; and a turning amount detecting device for detecting a turning amount of the steered wheel; wherein the steering shaft driving device drives the steering shaft, taking account of the steering effort, the turning reaction force, the steering angle, and the turning amount. This can restrain undesired increase in the deviation between a force proportional to the steering effort, and the turning reaction force, appearing in the initial stage of steering, by utilizing the deviation between the target control amount based on the steering angle, and the turning amount. This can achieve driving of the steering shaft with appropriate steering reaction force.

A vehicle steering apparatus comprising a driver's hands free state detector detecting a driver's hands free state when returning of a steering wheel to its neutral position, for controlling a reaction force to be applied to the steering wheel a steering operating angle of the steering wheel or a returning angular speed of the steering wheel, on the basis of the detection signal issued from the driver's hands free state detector. The driver's hands free state detector detects a driver's hands free state on the basis of at least vehicle speed and steering torque.

Vehicle steering apparatus

A steering apparatus for a vehicle comprising a calculating means for calculating a target value for the reaction force torque on the basis of a self-aligning torque term which is based on a detected value of a vehicle speed and a detected value of an actual moved position of a steering mechanism, an elastic resistance torque term which is proportional to a deviation between a detected value of the steering operating angle of a steering operating means mechanically not connected to the steering mechanism and a detected value of the actual moved position, and an inertial resistance torque term which is proportional to a time varying amount of the deviation, and the reaction force of the steering operating means is controlled by driving a reaction force motor on the basis of the calculated target value.

Steering apparatus for vehicle

A steering control apparatus of the present invention comprises: a steering shaft on which a steering effort is exerted through a steering wheel; a steering angle detecting device for detecting an angle of rotation of the steering shaft; a turning device for turning a steered wheel, the turning device being mechanically separated from the steering shaft; a target control amount calculating device for calculating a target control amount as a target of turning control, based on a detection result of the steering angle detecting device; a turning control device for outputting a turning control signal according to the target control amount to the turning device and controlling drive of the turning device so that a turning amount of the steered wheel becomes the target control amount; and a correction device for correcting the turning control signal outputted, based on a running status of a vehicle.

A spin suppress control device of a vehicle makes a first spin state estimation of the vehicle body and a second spin state estimation of the vehicle body in close time proximity to the first spin state estimation, and applies a braking force to one of the front left and right wheels at the outside of the turn such that a first braking force is applied according to the first spin state estimation and a second braking force is applied according to the second spin state estimation to be at least either stronger than the first braking force or with a greater advancement relative to an actual spin state of the vehicle than the first braking force. The second spin state estimation may be executed by a reversal of yaw rate of the vehicle body across its neutral, or by a spin state above a predetermined level occurring before a predetermined time lapses from the end of the spin suppress control according to the first spin state estimation, or by a spin state estimating parameter being modified to incorporate a time-based differential thereof.

Spin suppress control device or vehicle distinctive of degree of

In a brake system of a vehicle adapted to be operated automatically, the brake system includes a forecasting mechanism for forecasting a need of automatic braking, and a pump to provide a source of a pressurized working fluid for the automatic braking is started when a need of an automatic braking is forecast. By such a need forecast starting of the pump, the brake system can automatically apply an effective braking to a vehicle wheel or wheels, with no accumulator for storing the pressurized working fluid. The pump need forecasting may depend upon an estimation of a turn behavior of the vehicle and/or a detection of an obstacle in front of the vehicle.

Brake system having pump to start by forecast of braking

A spin suppress control device of a vehicle estimates a spin quantity of the vehicle to represent a liability of its spinning, and selectively and variably brakes each of the wheels according to the spin quantity so as to decelerate the vehicle within a range of generating no substantial yaw moment in the vehicle when the spin quantity exceeds a first threshold value therefor, and provides the vehicle with an anti-spin moment when the spin quantity exceeds a second threshold value therefor greater than the first threshold value.

Spin suppress control device of vehicle operative with yaw moment free

A foot-operated device for controlling a parking brake wherein a parking brake pedal is locked in its operated position through engagement of a pawl member with ratchet teeth. The pawl member is pivotally connected to the brake pedal, and the ratchet teeth are formed on a bracket fixed to a vehicle frame. The parking brake is released when a pedal pad pivotally connected to the brake pedal is pivoted on the pedal and the pedal is depressed. The pedal pad has an extension arm protruding toward the pawl member which is biased by a spring device in a first direction to cause the pawl member to engage the ratchet teeth while the pedal pad is placed in its original position. The extension arm directly engages the spring device to change the biasing direction thereof from the first direction to a second direction so that the pawl disengages from the ratchet teeth when the pedal pad is pivoted to its operated position. The biasing force in the second direction is selected to be smaller than an engagement force existing between the pawl member and the ratchet teeth.

Growing community of inventors

Mishima, Japan

Hiroshi Kawaguchi