Generic free-piston engine with transformer valve assembly for reducing throttling losses
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United States of America Patent
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Mar 8, 2005
Grant Date -
N/A
app pub date -
Jun 26, 2002
filing date -
Nov 24, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A free-piston engine directed to reduced throttling losses at minimum expenditure is provided. The free-piston engine has an engine piston, and a hydraulic piston co-operating with the engine piston. The engine piston may receive application of a force in the direction of compression via a hydraulic cylinder. A pressure in a high-pressure accumulator means or a low-pressure accumulator may be communicated to the hydraulic cylinder via a switchover valve. Between the hydraulic cylinder and the switchover valve is a valve assembly including a control piston. A connection to the high-pressure accumulator means may be controlled open with the aid of the control land of the control piston.
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