METHOD AND DEVICE FOR HEATING AN INTERIOR OF A VEHICLE

摘要

In a method of heating the interior of a vehicle having an internal combustion engine with fuel injection and a coolant circuit for transferring waste heat from the internal combustion engine via a heat exchanger to the vehicle interior by increasing the amount of heat transferred to the coolant during low load engine operation by intentional reduction of the engine operating efficiency, the engine is operated with high exhaust gas recirculation rates while transferring heat from the exhaust gas to the coolant for heating the vehicle interior and heating with the relatively large amount of recirculated gas the intake air so that, during the following compression of the intake air and recirculated gas in the engine combustion chamber, the air is heated early to an ignition temperature permitting early combustion of injected fuel so that the fuel injection phase can be extended not only toward late injection but also toward early injection providing for a relative long combustion period whereby engine efficiency is decreased but heat generation is increased.