Shovel having an engine equipped with a supercharger

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United States of America Patent

PATENT NO 9790664
SERIAL NO

14471219

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Importance

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Abstract

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A shovel includes a boom cylinder that drives a boom and an arm cylinder that drives an arm. A hydraulic pump supplies operating oil to the boom cylinder and the arm cylinder. An engine is connected to the hydraulic pump and equipped with a supercharger. The engine is controlled to maintain a revolution speed within a certain definite range. A controller controls a rotating speed of the supercharger. The controller performs a process of increasing the rotating speed of the supercharger so as to increase a supercharging pressure generated by the supercharger before a hydraulic load is applied to the engine.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO(S H I ) CONSTRUCTION MACHINERY CO LTDJAPAN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Morita, Kenji Chiba, JP 168 2753

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