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

Patent ·
OSTI ID:1159919
; ; ; ;

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.

Research Organization:
GM Global Technology Operations LLC (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42415
Assignee:
GM Global Technology Operations LLC (N/A)
Patent Number(s):
8,839,750
Application Number:
12/910,212
OSTI ID:
1159919
Country of Publication:
United States
Language:
English

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