Hybrid powered construction equipment
First Claim
1. Hybrid powered construction equipment having an engine;
- a hydraulic pump powered by the engine;
hydraulic actuators activated by discharge oil from the hydraulic pump;
an electric motor working in conjunction with the engine;
a dynamo electric generator powered by the engine; and
a battery for storing electric power generated by the dynamo electric generator, the construction equipment further comprising;
a power-up switch disposed in an operating lever or operation panel; and
a controller which inputs a signal released from the power-up switch, wherein the controller constantly controls the revolution speed of the engine in response to a signal from the power-up switch and controls the output torque of the electric motor such that torque for assisting powering of the hydraulic pump is output.
2 Assignments
0 Petitions
Accused Products
Abstract
Hybrid powered construction equipment is provided which is capable of making effective use of the output energy of an engine; increasing operating speed while keeping noise level low, and assuring operation power more than the performance of the engine. To this end, the hybrid powered construction equipment has a hydraulic pump powered by the engine; hydraulic actuators activated by discharge oil from the hydraulic pump; a motor-generator working in conjunction with the engine; and a battery for storing electric power generated by the electric motor-generator, the construction equipment further comprising a power-up switch disposed in an operating lever or operation panel and a controller which inputs a signal released from the power-up switch, wherein the controller constantly controls the revolution speed of the engine in response to a signal from the power-up switch and controls the output torque of the electric motor-generator such that torque for assisting powering of the hydraulic pump is output.
28 Citations
3 Claims
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1. Hybrid powered construction equipment having an engine;
- a hydraulic pump powered by the engine;
hydraulic actuators activated by discharge oil from the hydraulic pump;
an electric motor working in conjunction with the engine;
a dynamo electric generator powered by the engine; and
a battery for storing electric power generated by the dynamo electric generator, the construction equipment further comprising;
a power-up switch disposed in an operating lever or operation panel; and
a controller which inputs a signal released from the power-up switch, wherein the controller constantly controls the revolution speed of the engine in response to a signal from the power-up switch and controls the output torque of the electric motor such that torque for assisting powering of the hydraulic pump is output. - View Dependent Claims (2, 3)
- a hydraulic pump powered by the engine;
Specification