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Title: Drive piston assembly for a valve actuator assembly

Abstract

A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

Inventors:
 [1]
  1. (Troy, MI)
Publication Date:
Research Org.:
GM Global Technology Operations, Inc. (Detroit, MI)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014190
Patent Number(s):
7,665,431
Application Number:
US Patent Application 11/548,297
Assignee:
GM Global Technology Operations, Inc. (Detroit, MI) NETL
DOE Contract Number:  
FC26-05NT42415
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Sun, Zongxuan. Drive piston assembly for a valve actuator assembly. United States: N. p., 2010. Web.
Sun, Zongxuan. Drive piston assembly for a valve actuator assembly. United States.
Sun, Zongxuan. Tue . "Drive piston assembly for a valve actuator assembly". United States. https://www.osti.gov/servlets/purl/1014190.
@article{osti_1014190,
title = {Drive piston assembly for a valve actuator assembly},
author = {Sun, Zongxuan},
abstractNote = {A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {2}
}

Patent:

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