Hydraulic excavator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9121158
APP PUB NO 20100235060A1
SERIAL NO

12676706

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Importance

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Abstract

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An engine control device is adapted to be used for a construction machine equipped with an engine, a hydraulic pump to be driven by the engine, a revolving motor for revolving an upper structure by means of hydraulic oil to be supplied from the hydraulic pump, and a revolving operation lever for executing an operation of revolving the upper structure. The engine control device includes an operation amount detection unit configured to detect an operation amount of the revolving operation lever, and a control unit configured to increase a maximum engine speed when a result of detection by the operation amount detection unit is greater than a predetermined threshold.

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Patent Owner(s)

Patent OwnerAddress
KOMATSU LTD2-3-6 AKASAKA MINATO-KU TOKYO 1078414 JAPAN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yamada, Takeo Komatsu, JP 87 1061

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