Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Odai Tekko Kabushiki Kaisha

Shuji Morita

Norihiko Nakamura

Kiyoshi Nakanishi

Toyokazu Baika

Kyo Hattori

Kazuo Kato

Masao Yasukawa

Katsujiro Sato

Toshio Imamura

Hiroya Fujita

Kazuhiko Itou

Tomiyasu Hirano

Isao Harada

Yoshio Asaoka

Katsujiro Satou

Yasushi Hibino

A gear assembly comprising two gears and a spring in the form of a C-shaped clip for applying a resilient force between the gears. Two pins are provided on the respective side surfaces of the gears to receive the spring which has concave end surfaces to be received by the pins. Each of the concave end surfaces is defined by a part of a circle having a center which lies on a line of action of force by the pins.

Gear assembly adapted for mating with a third gear without backlash

A gear assembly having first and second gears in constant mesh with each other, the second gear being divided into two gear elements by a plane perpendicular to the axis thereof. A passage through which lubricating oil flows is formed between these two gear elements. The passage preferably consists of a radial groove formed on a surface of one of the two gear elements to extend in a radial direction from the inner surface of the gear element, an annular groove formed on the surface to extend in a circular direction about the axis of the gear element and communicate with the outer end portion of the radial groove, and a clearance formed between the two gear elements and surrounding the annular groove.

Gear assembly for transmitting rotation between two shafts

A gear assembly comprising two gears and a spring in the form of a C-shaped clip interconnecting the two gears. Two pins are provided on one of the two gears and the spring has two holes, one in each end thereof, whereby the spring can be carried by one gear in a prestressed state by means of the pin-and-hole connection. The other gear has a third pin thereon. The spring has a third hole into which the third pin is inserted. Thus the assembly work can be accomplished simply by resting the second gear on the first gear. An end of the third hole engages with the third pin to create a spring force necessary to provide nonbacklash mating with a third gear.

Gear assembly for mating with third gear without backlash

A hydraulic valve lifter is held in the recess of the rocker arm swingably pivoted to the rocker shaft. An oil pressure chamber is formed between the lifter body and the plunger. An oil chamber to supply the oil to the oil pressure chamber is formed between the plunger and the recess. An oil supply path to supply the oil through the oil path of the rocker shaft communicates to the oil chamber. A return path is provided extending from the top of the oil chamber to a clearance between the inside of the rocker arm hole and the outside of the rocker shaft or to a clearance between the outside of the lifter body and the inside of the rocker arm recess. With this arrangement of the device, the air infiltrating the oil chamber can be discharged from the top of the oil chamber via the return path and the clearance, thereby preventing invasion of the air into the oil pressure chamber and ensuring normal functioning of the hydraulic valve lifter.

Valve mechanism of internal combustion engine

An internal combustion engine having an auxiliary combustion chamber connected to only the main combustion chamber via a connecting passage. The engine comprises a first raised portion formed on the inner wall of the cylinder head, a second raised portion formed on the top face of the piston at a position opposite to the first raised portion with respect to the axis of the piston, and a third raised portion formed on the inner wall of the cylinder head above the second raised portion. A first flat squish area is formed between the flat peripheral top face of the piston and the flat bottom face of the first raised portion. A second spherical shell shape squish area is formed between the spherical bottom wall of the third raised portion and the spherical rear face of the second raised portion. A recessed portion is formed on the top wall of the main combustion chamber at a position near the first raised portion. The open end of the connecting passage is arranged in the recessed portion. The spark plug is arranged within the recessed portion at a position near the open end of the connecting passage and outside of the extension of the connecting passage.

Combustion chamber of an internal combustion engine

Growing community of inventors

Toyota, Japan

Shuji Morita