DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems

Abstract

A control system for an engine includes a first lift control module and a second lift control module. The first lift control module increases lift of M valves of the engine to a predetermined valve lift during a period before disabling or re-enabling N valves of the engine. The second lift control module decreases the lift of the M valves to a desired valve lift during a period after enabling or re-enabling the N valves of the engine, wherein N and M are integers greater than or equal to one.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
GM Global Technology Operations LLC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1159919
Patent Number(s):
8839750
Application Number:
12/910,212
Assignee:
GM Global Technology Operations LLC (N/A)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
DOE Contract Number:  
FC26-05NT42415
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Brennan, Daniel G, Marriott, Craig D, Cowgill, Joel, Wiles, Matthew A, and Patton, Kenneth James. System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems. United States: N. p., 2014. Web.
Brennan, Daniel G, Marriott, Craig D, Cowgill, Joel, Wiles, Matthew A, & Patton, Kenneth James. System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems. United States.
Brennan, Daniel G, Marriott, Craig D, Cowgill, Joel, Wiles, Matthew A, and Patton, Kenneth James. Tue . "System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems". United States. https://www.osti.gov/servlets/purl/1159919.
@article{osti_1159919,
title = {System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems},
author = {Brennan, Daniel G and Marriott, Craig D and Cowgill, Joel and Wiles, Matthew A and Patton, Kenneth James},
abstractNote = {A control system for an engine includes a first lift control module and a second lift control module. The first lift control module increases lift of M valves of the engine to a predetermined valve lift during a period before disabling or re-enabling N valves of the engine. The second lift control module decreases the lift of the M valves to a desired valve lift during a period after enabling or re-enabling the N valves of the engine, wherein N and M are integers greater than or equal to one.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 23 00:00:00 EDT 2014},
month = {Tue Sep 23 00:00:00 EDT 2014}
}

Works referenced in this record:

High speed engine valve actuator
patent, January 1977


Electrohydraulic proportional actuator apparatus
patent, August 1977


Electro-hydraulic proportional actuator
patent, February 1989


Control device for a variable displacement engine
patent, December 1993


Poppet valve with force feedback control
patent, June 1995


Multi-pass light amplifier
patent, August 1996


Balancing valve motion in an electrohydraulic camless valvetrain
patent, November 1996


Magnetically-latchable fluid control valve system
patent, August 2000


Engine valve actuator assembly
patent, February 2004


Variable valve drive
patent, February 2004


Hydraulic valve actuation systems and methods
patent, May 2004


Method for 3-step variable valve actuation
patent, November 2004


Frameless variable valve actuation mechanism
patent, March 2005


Engine valve actuator assembly with dual hydraulic feedback
patent, May 2005


Hydraulic valve actuation methods and apparatus
patent, April 2006


Method for operating a hybrid vehicle and hybrid vehicle
patent, August 2009


Hydraulic actuation system for improved engine control
patent, July 2010


Method for controlling a variable event valvetrain
patent, January 2013


Apparatus and method for two-step intake phased engine control system
patent-application, November 2002


Hydraulic valve actuation systems and methods
patent-application, January 2003


Method for moment-neutral switching off a cylinder by deactivation of gas-changing valves
patent-application, April 2003


Method for controlling a variable event valvetrain
patent-application, January 2007


Valve actuator assembly having a center biased spool valve with detent feature
patent-application, November 2007


Drive piston assembly for a valve actuator assembly
patent-application, July 2008


Control apparatus for internal combustion engine and control method therefor
patent-application, January 2009


Method and device for controlling a hydraulic actuator
patent-application, January 2009


Spark Timing and Control During Transitions Between Spark Ignition Combustion and Homogenous Charge Compression Ignition
patent-application, September 2009


HCCI/SI Combustion Switching Control System and Method
patent-application, September 2009


Valve Gear of Internal Combustion Engine
patent-application, November 2009


Hydraulically Operated Valve Actuation and Internal Combustion Engine with Such a Valve Actuation
patent-application, December 2010


Variable Valve Actuation Control Systems and Methods
patent-application, March 2011


Air Assist Start Stop Methods and Systems
patent-application, June 2011


Variable Lost Motion Valve Actuator and Method
patent-application, August 2011


System and Method for Controlling Hydraulic Pressure in ELectro-Hydraulic Valve Actuation Systems
patent-application, April 2012


Hydraulic Engine Valve Actuation System Including Independent Feedback Control
patent-application, July 2012