Construction Machine
First Claim
1. A construction machine that includes a first mode in which a maximum output of an engine is a prescribed output, a second mode in which the maximum output of the engine is limited to an output less than the prescribed output, and a mode selector switch for enabling an operator to select from the plurality of modes, the construction machine comprising:
- an accelerator for enabling the operator to adjust an engine speed of the engine, traveling speed detecting means that detects a traveling speed, and a controller that, when the traveling speed detected by the traveling speed detecting means is a prescribed speed or slower and an opening degree of the accelerator is a prescribed opening degree or larger, controls an operation in the second mode regardless of the mode selected by the mode selector switch.
1 Assignment
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Accused Products
Abstract
A construction machine capable of increasing a frictional force and an acceleration performance without causing unwanted slip and an excessive load to a transmission by a driving force. The construction machine comprises a first mode to set the maximum output of an engine to a prescribed output, a second mode to limit the maximum output of the engine to an output lower than the prescribed output and a mode selector switch used for a operator to select from the plurality of modes. The construction machine also comprises control means that controls the machine to operate in the second mode regardless of the mode selected by the mode selector switch when a vehicle speed is equal to or less than a prescribed speed and the opening of an accelerator is equal to or more than a prescribed opening.
17 Citations
3 Claims
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1. A construction machine that includes a first mode in which a maximum output of an engine is a prescribed output, a second mode in which the maximum output of the engine is limited to an output less than the prescribed output, and a mode selector switch for enabling an operator to select from the plurality of modes, the construction machine comprising:
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an accelerator for enabling the operator to adjust an engine speed of the engine, traveling speed detecting means that detects a traveling speed, and a controller that, when the traveling speed detected by the traveling speed detecting means is a prescribed speed or slower and an opening degree of the accelerator is a prescribed opening degree or larger, controls an operation in the second mode regardless of the mode selected by the mode selector switch.
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2. A construction machine that includes a first mode in which a maximum engine speed of an engine is a prescribed speed, a second mode in which the maximum engine speed of the engine is limited to a speed less than the prescribed speed, and a mode selector switch for enabling an operator to select from the plurality of modes, the construction machine comprising:
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an accelerator for enabling the operator to adjust an output of the engine, traveling speed detecting means that detects a traveling speed, and a controller that, when the traveling speed detected by the traveling speed detecting means is a prescribed speed or slower and an opening degree of the accelerator is a prescribed opening degree or larger, controls an operation in the second mode regardless of the mode selected by the mode selector switch.
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3. A construction machine that includes a first mode in which an engine is operated under a first torque curve, a second mode in which the engine is operated under a second torque curve that is lower than the first torque curve, and a mode selector switch for enabling an operator to select from the plurality of modes, the construction machine comprising:
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an accelerator for enabling the operator to adjust an output of the engine, traveling speed detecting means that detects a traveling speed, and a controller that, when the traveling speed detected by the traveling speed detecting means is a prescribed speed or slower and an opening degree of the accelerator is a prescribed opening degree or larger, controls an operation in the second mode regardless of the mode selected by the mode selector switch.
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Specification