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Title: Double-reed exhaust valve engine

Abstract

An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a double reed outlet valve for controlling the flow of low-pressure working fluid out of the engine. The double reed provides a stronger force resisting closure of the outlet valve than the force tending to open the outlet valve. The double reed valve enables engine operation at relatively higher torque and lower efficiency at low speed, with lower torque, but higher efficiency at high speed.

Inventors:
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1187943
Patent Number(s):
9,068,484
Application Number:
13/794,436
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Mar 11
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 43 PARTICLE ACCELERATORS

Citation Formats

Bennett, Charles L. Double-reed exhaust valve engine. United States: N. p., 2015. Web.
Bennett, Charles L. Double-reed exhaust valve engine. United States.
Bennett, Charles L. Tue . "Double-reed exhaust valve engine". United States. https://www.osti.gov/servlets/purl/1187943.
@article{osti_1187943,
title = {Double-reed exhaust valve engine},
author = {Bennett, Charles L.},
abstractNote = {An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a double reed outlet valve for controlling the flow of low-pressure working fluid out of the engine. The double reed provides a stronger force resisting closure of the outlet valve than the force tending to open the outlet valve. The double reed valve enables engine operation at relatively higher torque and lower efficiency at low speed, with lower torque, but higher efficiency at high speed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {6}
}

Patent:

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Works referenced in this record:

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The design and characteristics of piezomotors using flexure-hinged displacement amplifiers
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