Hybrid drive train
AssigneeDeutz Aktiengesellschaft
InventorsThorsten Maringer, Marco Brun
Life of this patent
Estimating the term…
Abstract
A parallel hybrid drive train, in particular for a working machine, includes an internal combustion engine (1), an electrical machine (2) and hydraulic aggregates (3, 4, 5, 9) for driving working devices (6-8) and for moving the working machine. In order to increase the efficiency, the rotational speed of the internal combustion engine is lowered, that is to say the load point is moved. Increased power requirements are detected via a driver input and provide a desired rotational speed. The electrical machine assists the acceleration of the internal combustion engine to said desired rotational speed.
Claims14
1-10. (canceled)
A method for the dynamic rotational speed reduction of an internal combustion engine in a mobile working machine, aided by an electric machine, the method comprising:
- ascertaining a nominal rotational speed of the internal combustion engine;
- using, aided by the electric machine, a dynamic rotational speed reduction of the internal combustion engine, the electric machine assisting acceleration phases of the internal combustion engine from lower rotational speeds to higher rotational speeds.
A hybrid drive train for a mobile working comprising:
- an internal combustion engine;
- an electric machine;
- a hydraulic working machine;
- and
- a control unit configured for ascertaining a nominal rotational speed of the internal combustion engine, the hybrid drive train being configured to, aided by the electric machine, use a dynamic rotational speed reduction of the internal combustion engine, the electric machine configured for assisting acceleration phases of the internal combustion engine from lower rotational speeds to higher rotational speeds.
Dependencies are inferred from the claim text.