Power system and work machine using same

Details Power system and work machine using same Power system and work machine using same

2007-04-03

2007-04-03

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

Reexamination Certificate

active

10714171

ABSTRACT:
Engineers are constantly seeking methods to reduce undesirable emissions, noise, and vibrations created by power systems. In the present invention, a power system includes at least one hydraulic cylinder that defines a first fluid volume and a second fluid volume separated from one another via a moveable plunger. Hydraulic power created within the hydraulic cylinder is converted to mechanical energy by a variable displacement hydraulic motor that is fluidly connected to at least the first fluid volume. A generator is attached to the variable displacement hydraulic motor, and produces electrical power that is stored in a power storage system. The stored power can be supplied to an electric motor that is operable to power a hydraulic pump. The hydraulic pump supplies hydraulic fluid to the hydraulic cylinder. The power system of the present invention is a relatively efficient alternative to a power system including a diesel engine that can be a source of undesirable emissions, noise and vibrations.

REFERENCES:
patent: 3947744 (1976-03-01), Grace et al.
patent: 5794442 (1998-08-01), Lisniansky
patent: 6460332 (2002-10-01), Maruta et al.
patent: 6945039 (2005-09-01), Yoshino
patent: 43 24 464 (1995-01-01), None
patent: 101 28 584 (2002-12-01), None
patent: PAJ 2002-195218 (2002-10-01), None

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