Working machine having prime mover control device
First Claim
1. A work machine with an engine control device, the machine comprising:
- hydraulic actuators activated by pressure oil from a hydraulic pump driven by an engine;
an implement driven by the activation of the hydraulic actuators;
an engine control device for controlling the output of the engine in accordance with each of a plurality of operation modes which are set according to the contents of operations; and
operation mode selecting means for selecting any one of the plurality of operation modes, wherein after a specified operation mode has been selected from the plurality of operation modes by the operation mode selecting means, the engine control device performs isochronous control for maintaining the revolution speed of the engine to a constant value irrespective of load fluctuations.
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Accused Products
Abstract
A work machine with an engine control device is provided, which is capable of ensuring fine controllability and providing further improved fine controllability with a simple construction. To this end, the work machine includes: an engine control device for controlling the output of an engine in accordance with each of a plurality of operation modes which are set according to the contents of operations; and operation mode selector switches for selecting any one of the plurality of operation modes. If the operation mode selector switches select, from the plurality of operation modes, an operation mode for setting a set revolution speed for the engine to a relatively low value, the engine control device performs isochronous control for maintaining the revolution speed of the engine to a constant value irrespective of load fluctuations.
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Citations
5 Claims
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1. A work machine with an engine control device, the machine comprising:
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hydraulic actuators activated by pressure oil from a hydraulic pump driven by an engine;
an implement driven by the activation of the hydraulic actuators;
an engine control device for controlling the output of the engine in accordance with each of a plurality of operation modes which are set according to the contents of operations; and
operation mode selecting means for selecting any one of the plurality of operation modes, wherein after a specified operation mode has been selected from the plurality of operation modes by the operation mode selecting means, the engine control device performs isochronous control for maintaining the revolution speed of the engine to a constant value irrespective of load fluctuations. - View Dependent Claims (2, 3, 4, 5)
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Specification