METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE

摘要

A direct fuel injection internal combustion engine fluidly coupled to an exhaust aftertreatment system is described and includes a plurality of fluidly coupled exhaust purifying devices and an exhaust gas sensor. A method of controlling the engine includes, activating, via a heater controller, a heating element of the exhaust gas sensor in response to starting the internal combustion engine. An exhaust gas feedstream is monitored to determine a temperature of the exhaust gas sensor. Engine control to effect heating of one of the exhaust purifying devices is permitted only when a temperature of the exhaust gas sensor is greater than a threshold temperature.

主权项

1. A method for controlling a direct fuel injection internal combustion engine fluidly coupled to an exhaust aftertreatment system including a plurality of fluidly coupled exhaust purifying devices and an exhaust gas sensor, the method comprising:
in response to starting the internal combustion engine:
activating, via a heater controller, a heating element of the exhaust gas sensor,monitoring an exhaust gas feedstream,determining a temperature of the exhaust gas sensor based upon the monitoring of the exhaust gas feedstream, andpermitting engine control to effect heating of one of the exhaust purifying devices only when a temperature of the exhaust gas sensor is greater than a threshold temperature.