Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Delta Tooling Co., Ltd.

Kiyokazu Sunami

Etsunori Fujita

Yumi Ogura

Eiichi Ono

Seiji Kawasaki

Kazuyoshi Chizuka

Eiichi Yasuda

Yoshiki Ninomiya

Yoshikatsu Kisanuki

Takayuki Aoyama

Mizuho Inagaki

Sho Honda

Shun'ichi Doi

Yoshikatsu Shibata

Kazunori Furukawa

Hiromi Miyamura

Hiroyuki Yamaguchi

Hiroyuki Nishizawa

Yuji Muragishi

Yasuhide Takata

Yoshihiro Mizuno

Yujiro Oshima

Taro Aoyama

Yoshikazu Hattori

Yuichi Tanaka

Kisaburo Hayakawa

Kazuo Miki

Kazukata Takei

Takero Hongo

Arata Takahashi

Yojiro Koike

Tetsuzou Inoue

Junichi Mizuta

A degree of freedom of a hypoid gear is improved. An instantaneous axis in a relative rotation of a gear axis and a pinion axis, a line of centers, an intersection between the instantaneous axis and the line of centers, and an inclination angle of the instantaneous axis with respect to the rotation axis of the gear are calculated based on a shaft angle, an offset, and a gear ratio of a hypoid gear. Based on these variables, base coordinate systems are determined, and the specifications are calculated using these coordinate systems. For the spiral angles, pitch cone angles, and reference circle radii of the gear and pinion, one of the values for the gear and the pinion is set and a design reference point is calculated. Based on the design reference point and a contact normal of the gear, specifications are calculated. The pitch cone angle of the gear or the pinion can be freely selected.

Hypoid gear design method and hypoid gear

Assuming that Nand Nare the respective numbers of pinion rollers (); &#x3c1;is the ratio between the inner diameter of a ring roller () and the outer diameter of a sun roller (); and &#x3c1;is the ratio between the inner diameter of a ring roller () and the outer diameter of a sun roller (); and it holds that N=3, and (&#x3c1;+1)&#xd7;(&#x3c1;+1)&#x2267;24+16&#xd7;2, in the case where N=3, then it holds that &#x3c1;&#x2267;0.102&#xd7;(&#x3c1;+1)&#xd7;(&#x3c1;+1)+1.196, and &#x3c1;&#x2266;min[0.204&#xd7;(&#x3c1;+1)&#xd7;(&#x3c1;+1)+3.123, 7+4&#xd7;3], and in the case where N=4, then it holds that &#x3c1;&#x2267;(2&#x2212;2)&#xd7;(&#x3c1;+1)&#xd7;(p+1)/4&#x2212;1, and &#x3c1;&#x2266;min[0.185&#xd7;(&#x3c1;+1)&#xd7;(&#x3c1;+1)+1.320, 7+4&#xd7;3].

Traction drive mechanism

The invention provides a vehicle motion control device capable of realizing optimum avoidance control in the case of an emergency. The vehicle motion control device includes an external environment detection unit for detecting external environment, and a travel state detection unit for detecting a travel state of a driver's vehicle. An obstruction is detected based on the external environment detected by the external environment detection unit, and an environment map indicating obstructions is created. A control device estimates a plurality of possible avoidance actions for avoiding an obstruction based on the environment map and the travel state of the driver's vehicle detected by the travel state detection unit. The control device estimates collision damage according to each avoidance action estimated by the avoidance action estimation unit, and selects an appropriate avoidance action based on the estimated collision damage. The control device controls a vehicle such that the selected avoidance action is carried out.

Vehicle motion control device

A collision behavior control apparatus which comprises a contacting portion disposed in a portion of the front of a vehicle, and which, at the time of collision against a pedestrian or a two-wheeler with a rider riding thereon, controls the behavior of the pedestrian or the two-wheeler rider by pushing the pedestrian or the two-wheeler rider separated from the two-wheeler with the contacting portion, wherein the pedestrian or the two-wheeler rider is pushed by the contacting portion such that the pedestrian or the two-wheeler rider is not bumped up onto the hood, whereby the pedestrian or the two-wheeler rider is moved to the vehicle side.

Collision behavior control apparatus

At a vehicle seat, a cushion materialis provided at a framefor a sitting portion of a seat frame, such that a seat cushionis formed. An upper cushion member (three-dimensional solid knit fabric), which is a surface layer portion of the cushion material, is stretched at the framefor the sitting portion, and is layered on a cloth spring materialwhich is a lower layer portion of the cushion material. When the cloth spring materialis pressed and flexes downward due to pushing-against force which is based on body weight of a seated person at a time of sitting on the seat cushion, at regions of the cloth spring materialwhich are pushed by ischial tuberosities of the seated person, tensile forces of extension coil springs, which are forces in the pushing direction, act, and directions of tension of the cushion materialare in three dimensions.

Seat

This present invention discloses a seat, comprising: a seat cushion; and a seat back frame connected to the seat cushion, the seat back frames being bent in a range of specified bending angle in a direction of moving the top end backward by a backward load over a predetermined value, by way of a joint provided at an intermediate portion in the vertical direction, such that the seat back frame receives a reaction force corresponding to the bending angle.

A direct injection type internal combustion engine includes a centrifugal injector having its port facing a recess formed in a combustion chamber. The injector is arranged such that its axis of injection fails to intersect the central axis of the recess but extends at an inclination with respect to the same. In an embodiment typifying the invention, the following relationship is satisfied: ##EQU1## in which: D designates the maximum distance between facing sides of said recess; wherein with respect to a first transverse plane containing the location of the maximum distance D of said recess and a second plane intersecting said first transverse plane at a right angle, being parallel to the axis of sprays of the swirl injector and containing the center of the recess on the first transverse plane, .beta. designates the distance between the axis of sprays of said swirl injector and a second plane intersecting, at a right angle, a first transverse plane containing the location of the maximum distance D of said recess, said second plane being parallel to the axis of sprays of said swirl injector and containing the center of said recess on said first transverse plane; .theta. designates the angle contained between the axis of sprays of said swirl injector and the first transverse plane; and .theta..sub.s designates the angle of sprays of said swirl injector during fuel injection. The practice of the invention prevents the wall surface of the combustion chamber from being wetted with fuel, thereby improving the combustion phenomena and reducing the specific consumption.

Direct injection type internal combustion engine

Growing community of inventors

Tajimi, Japan

Kiyokazu Sunami