Power transmission device and hybrid construction machine provided therewith
AssigneeKobelco Construction Machinery Co., Ltd.
InventorMitsunori Hirozawa
Life of this patent
Estimating the term…
Abstract
A configuration is provided to directly utilize the power of an engine as the power of a hydraulic pump, and to efficiently perform power generation and engine assist. The configuration is provided with an engine; a generator which is configured to generate electric power by an operation of the generator using the power of the engine; a battery which is configured to store the electric power generated by the generator; a motor which is configured to be operated by the power of the engine and by the electric power of the battery; a hydraulic pump connected to the motor so as to be driven by operation of the motor; and a power divider connected to the engine, the generator, and the motor so that the power of the engine is distributed to the generator and to the motor.
Claims6
A power transmission device to be provided to a hybrid construction machine, comprising:
- an engine;
- a generator which is configured to generate electric power by operation of the generator using power of the engine;
- a battery which is configured to store the electric power generated by the generator;
- a motor which is configured to be operated by the power of the engine and by the electric power of the battery;
- a hydraulic pump connected to the motor so as to be driven by operation of the motor;
- and
- a power divider connected to the engine, the generator, and the motor so that the power of the engine is simultaneously distributed to the generator and to the motor,
- wherein the power divider includes a gear mechanism having a gear ratio that is set so that the number of rotations of the generator is larger than the number of rotations of the motor when distributed.
Dependencies are inferred from the claim text.