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Date of Publication:2022-10-10

Journal:内燃机工程

Affiliation of Author(s):能源与动力学院

Volume:35

Issue:2

Page Number:36-41

ISSN No.:1000-0925

Abstract:A compact dual-mode fully variable valve electro-hydraulic actuation
   system, consisting mainly of drive-brake condition and mode converters
   was proposed. Requirements for both engine drive and brake modes were
   fulfilled with only two oil supplier and three electromagnetic valves.
   Valves could be adjusted independently by each cycle, cylinder and
   operating parameter. Valve events in three control strategies were
   simulated using AVL Hydsim software and based on the simulated results
   correlation analysis was carried out. It is revealed that in three
   control strategies, valve operating parameters are adjusted
   independently or continuously by controlling electromagnetic valves,
   there exist highly linear correlations (correlation coefficients>.95)
   between valve operating parameters and corresponding control parameters,
   and the influencing coefficients change regularly with speed increasing.

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