Kubota Corporation

Yanmar Diesel Engine Co., Ltd.

Kubato Ltd.

Osamu Murakami

Ryoichi Ito

Akira Ishii

Kazuo Higo

Hisato Katoh

Masayuki Nakamura

Manabu Miyazaki

Koji Iwai

Kunio Yoshida

Akiyoshi Morikawa

Kengi Ueno

Kenji Ueno

Tutomu Wada

Shigeru Kawabata

Masakazu Shiotsuki

Kenzi Ueno

V type diesel engine

In an air-cooled type cooling system for an engine working machine assembly in which a working machine such as a generator, a compressor and the like is adapted to be driven by an internal combustion engine, there are provided an air-cooled engine, a working machine and an exhaust muffler in a machine area as well as a centrifugal cooling fan in a fan room within a casing. An exhaust air outlet passage and an exhaust air conduction passage are provided in such a manner as to come out in parallel from the periphery of the fan area. Part of the cooling air sucked into the fan area after cooling the engine and the working machine in the machine area is adapted to be discharged directly outside the casing through the exhaust air outlet passage, and the remaining part thereof is adapted to be discharged outside the casing through the exhaust air conduction passage after cooling the exhaust muffler.

Air-cooled type cooling system for engine working machine assembly

In an engine generator having a work generator arranged at the upper side of an engine of a vertical crank shaft type, the output shaft of the engine projects upwards from the engine crank case so as to be connected to the rotor of the work generator. And the stator is arranged so as to encircle the rotor and to be encircled by an air induction casing. A cooling fan of a centrifugal blower type is located at the upper end of the rotor shaft with the blades thereof directed to the side of the generator so as to supply a cooling air flowing upwards to both the interior and the exterior of the stator during operation.

Forcedly air-cooled engine generator of vertical shaft type

Power generator

An engine has a load detector, or more specifically a threshold load comparator, and also detectors for sensing any abnormality of various factors influencing the normal engine operation. When no abnormality is sensed, the engine is made to operate automatically at a low speed level when the engine load is below the threshold value, and at a high speed level when the load is beyond such value. When any abnormality is sensed, then the engine is emergently halted in a fail-safe manner, thus any damaging disorder in controling circuitry for effecting such emergent halting leads in itself to emergent halting of the engine as well.

Engine with a rotary-speed control apparatus and an emergency halt

Growing community of inventors

Sakaishi, Japan

Osamu Murakami