Kubota Corporation

Wataru Iwanaga

Masahiro Aketa

Yuzo Umeda

Hiroyuki Anami

Yasunori Shiraishi

Yusuke Suzuki

Hiroki Oso

Mitsugu Okuda

Takahiro Kajihara

Naoya Sakurai

Makoto Watanabe

Takumi Fukuda

A device with an adjustment bolt includes a bolt attachment wall, an adjustment bolt screwed with an internal thread hole of the bolt attachment wall, a locknut screwed with the adjustment bolt, a cover that surrounds the adjustment bolt and the locknut, and a stopper unit that prevents removal of the cover from the locknut. The stopper unit includes an inner circumference groove of the cover fitted around a C-shaped retaining ring, and an external circumference groove of the locknut fitting within the retaining ring. The external circumference groove includes a first groove portion having a large-diameter groove bottom that restricts contraction and removal of the retaining ring fitted within the inner circumference groove, and a second groove portion provided continuously for the first groove portion and having a small-diameter groove bottom that allows contraction and removal of the retaining ring fitted within the inner circumference groove.

Device with adjustment bolt

Internal combustion engine

Portion of an internal combustion engine

The present invention relates to an engine and a method for producing the engine. The engine is constructed as follows. The engine interlockingly operates a pump () for feeding fuel under pressure, by power of a crank shaft (). A pair of gears () and () are arranged to be attached to a gear attaching shaft (). The paired gears () and () are attached to the gear attaching shaft (). At least one gear () of the paired gears () and () constitutes a gear train () through which the power of the crank shaft () is transmitted to the pump (). The method for producing the engine is constructed as follows. The method uses a common part for each of the gear trains () and () so as to produce engines of an injection pump specification and a common rail specification and alternatively manufactures the gear trains () and () through the common part. It comprises attaching a pair of gears () and () to a gear attaching shaft () of the engine of every specification, making one gear () of the paired gears () and () serve as a basic gear and the other gear () serve as a second gear, employing the basic gear () as the common part for each of the gear trains () and () and alternatively manufactures the gear trains () and () of the engines of the respective specifications through the basic gear () of the common part.

Engine and a method for producing the engine

A multi-cylinder engine comprises a cylinder block () provided with a side water passage () oriented in a front and rear direction and passing by each of cylinder wallsso as to introduce cooling water from a radiator into a cylinder jacketlaterally through the side water passage (). The side water passage () has front and rear end portions provided with front and rear openings (), () which communicate the side water passage () with a water pump (). Thus even if the water pump () is arranged at either of the front and rear end portions, the opening of the side water passagenear the end portion where the water pump () is arranged can communicate the side water passage () with the water pump (). And a method for alternatively producing multi-cylinder engines, uses the cylinder block () as a common part.

Multi-cylinder engine and a method for alternatively producing multi-cylinder engines

Selective portions of a internal combustion engine

In a multi-cylinder engine, an inner space ( ) is interposed between upper and lower female screws ( ), ( ) and an outer wall ( ) of a cylinder block ( ). Lower peripheral wall portions ( ), ( ) of a cylinder wall ( ) continue with left and right both sides ( ), ( ) of a lower side portion ( ) of an inter-cylinder wall ( ) in a front and rear direction and increase their thicknesses progressively as they approach the left and right both sides ( ), ( ).

Multi-cylinder engine

A direct-injection type diesel engine comprises a cylinder head ( ) with a fuel injection nozzle ( ) and a glow plug ( ) attached thereto. The fuel injection nozzle ( ) has a leading end opposed to a cylinder mid portion ( ) and the glow plug ( ) extends through an intake port wall portion ( ) between the fuel injection nozzle ( ) and an intake port ( ). The glow plug ( ) is inclined with respect to the fuel injection nozzle ( ) by a predetermined angle ( ) and has a leading end inserted into the cylinder mid portion ( ).

Direct-injection type diesel engine

Growing community of inventors

Sakai, Japan

Wataru Iwanaga