US 6,336,071 B2 · Direct injection engine system and method

Abstract

A method for controlling mode transitions, such as from stratified to homogeneous mode, in a direct injection engine adjusts a number of cylinders carrying out combustion to prevent engine torque disturbances. Cylinder activation is used when changes in cylinder air/fuel ratio cannot be compensated using ignition timing adjustments. In addition, the number of cylinders to activate is also determined and measures are taken if the number of cylinders determined are not available to be activated.

Claims0

Dependent claims

Claims aren’t available for this document.

Facts

Application

09/824,409Filed 2 Apr 2001

Published

US 2001/0013330 A116 Aug 2001

Granted

1 Jan 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

F02D 41/307
With special control during transition between modes: to avoid torque shocks
F02D 17/02
Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling: cutting-out
F02D 41/0087
Controlling each cylinder individually: selective cylinder activation, i.e. partial cylinder operation
F02B 17/005
Engines characterised by means for effecting stratification of charge in cylinders: having direct injection in the combustion chamber

Direct injection engine system and method

Life of this patent

Abstract

Claims0

Direct injection engine system and method

Life of this patent

Abstract

Claims0