METHOD AND APPARATUS TO CONTROL A TRANSITION BETWEEN HCCI AND SI COMBUSTION IN A DIRECT-INJECTION GASOLINE ENGINE
摘要
<p>A method to operate a multi-cylinder direct-injection engine in one of a controlled auto-ignition and a spark-ignition combustion mode is described. Engine operation and an operator torque request are monitored. Fuel delivery to a portion of the cylinders is selectively deactivated and torque output from non-deactivated cylinders is selectively increased to achieve the operator torque request when the monitored engine operation is above a predetermined threshold. An engine operating point at which an engine load demand exceeds an operating capability of the engine in a stoichiometric HCCI mode is identified. The engine is selectively operated in an unthrottled spark-ignition mode with at least one cylinder unfueled and torque output from the remaining cylinders is selectively increased.</p>
申请公布号
WO2007140132(A2)
申请公布日期
2007.12.06
申请号
WO2007US69105
申请日期
2007.05.17
申请人
GM GLOBAL TECHNOLOGY OPERATIONS, INC.
发明人
KUO, TANG-WEI;NAJT, PAUL, M.;WERMUTH, NICOLE;ENG, JAMES, A.