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1. (WO2018197954) AFTERTREATMENT TEMPERATURE MANAGEMENT VIA BOOT-SHAPED VALVE LIFT PROFILES

Pub. No.:    WO/2018/197954    International Application No.:    PCT/IB2018/000606
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue May 01 01:59:59 CEST 2018
IPC: F02D 13/02
F02D 41/00
F01L 1/18
Applicants: EATON INTELLIGENT POWER LIMITED
Inventors: MCCARTHY, James, E.
VANCE, Matthew, A.
Title: AFTERTREATMENT TEMPERATURE MANAGEMENT VIA BOOT-SHAPED VALVE LIFT PROFILES
Abstract:
A method for advancing valve actuation during low load or idle diesel engine conditions to promote aftertreatment heat up comprises switching a cam phaser from a nominal lift position to an advance lift position to open an affiliated valve before nominal. Valve lift is actuated via the cam phaser. The valve is lowered towards nominal closure, and valve closure is interrupted by actuating a latch phaser. Valve closure is extended beyond nominal valve closure.