Hybrid type working machine

A working machine, hybrid technology, applied in mechanical equipment, hybrid vehicles, motor vehicles, etc., can solve problems such as stopping the engine, excessive engine load, etc., to achieve the effect of suppressing overload
CN102362422BInactive Publication Date: 2014-06-25SUMITOMO HEAVY IND LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUMITOMO HEAVY IND LTD
Publication Date
2014-06-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

A hybrid-type working machine 1 includes an engine 11; a supercharger 42; an electric generator 12 that performs electricity generation by the driving force of the engine 11 and assists the driving force of the engine 11 through its own driving force; an inverter circuit 18A that is connected to an electric terminal of the electric generator 12; and a controller 30 which includes a nonvolatile memory 31 that stores first information indicating a correlation between the revolutions of the engine 11, the boost pressure of the supercharger 42 and an output upper limit value of the engine 11, and drives the inverter circuit 18A. The controller 30 controls the inverter circuit 18A so that the electric generator 12 assists the driving force when the required output exceeds the output upper limit value, based on a correlation stored in the nonvolatile memory 31.
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Description

technical field

[0001] The invention relates to a hybrid working machine. Background technique

[0002] Conventionally, a machine tool in which a part of a drive mechanism is motorized has been proposed. This type of working machine has a hydraulic pump for hydraulically driving movable parts such as booms, arms, and buckets, and an AC motor (motor generator) is connected to an internal combustion engine ( engine), and according to various needs, the operation of assisting the driving force of the engine and the operation of charging the battery with the electric power generated by the generation are performed. For example, Patent Document 1 discloses such a hybrid working machine. In the hybrid working machine described in Patent Document 1, the distribution of power output by the motor generator to assist the engine is determined based on the required power of the hydraulic pump, and the power distribution is corrected so that the difference between the target rotation s...

Claims

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