Method and device for interior heating in a motor vehicle

摘要

Various systems and methods are provided for supplying heat to a passenger compartment during a filter regeneration event. In one example, a first phase of a filter regeneration event is initiated for a filter in an internal combustion engine based on one or more parameters, with heat produced by the engine then supplied to a heater core during the first phase, and the first phase extended if heating is requested for a duration based on ambient temperature. The engine may be operated at reduced efficiency during the filter regeneration event, and in some embodiments, the method may further include injecting an additional amount of fuel during a second phase of the filter regeneration event after the first phase ends to cause soot combustion in the filter.

主权项

1. A method, comprising: initiating a first phase of a filter regeneration event based on one or more parameters for a filter in an internal combustion engine by retarding fuel injection timing;
supplying heat generated from combustion in the engine to a heater core during the first phase; if passenger compartment heating is requested, extending the first phase for a duration, the duration coincides with the duration in which cabin heating is requested; if passenger compartment heating is not requested, terminating the first phase by returning to a normal fuel injection timing strategy; and operating the engine at a reduced efficiency during the filter regeneration event.