VARIABLE VALVE ACTUATION CONTROLS FOR ENGINES

A system includes an engine including a valvetrain comprising one or more intake valves and one or more exhaust valves, a variable valve actuation (VVA) system electronically controllable to vary operation of the valvetrain to selectably operate the engine in either a Miller cycle or a non-Miller cy...

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Hauptverfasser:	YANG, Xing, SHIPP, Timothy, WANG, Ke, ZOU, Kai, HUANG, Wei
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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creator	YANG, Xing SHIPP, Timothy WANG, Ke ZOU, Kai HUANG, Wei
description	A system includes an engine including a valvetrain comprising one or more intake valves and one or more exhaust valves, a variable valve actuation (VVA) system electronically controllable to vary operation of the valvetrain to selectably operate the engine in either a Miller cycle or a non-Miller cycle, and an electronic control system configured to control the VVA system to change operation of the engine from the Miller-cycle to the non-Miller cycle if an engine speed condition is satisfied, a peak cylinder pressure (PCP) condition is satisfied, at least one of an air-fuel ratio (AFR) condition and an oxygen-fuel-control (OFC) condition is satisfied, and a minimum off time condition for the VVA system is satisfied.
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subjects	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
title	VARIABLE VALVE ACTUATION CONTROLS FOR ENGINES
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