Patent ID: 7503320
Filing Date: 2009-03-17
Classification: F02D,F02M,Y02T

Abstract:
1. A method for operating an internal combustion engine ( 1 ) at idle speed ( 47 ), the engine ( 1 ) being equipped with a purge device ( 28 ) comprising a purge valve ( 31 ) for purging a fuel vapor canister communicating, via a vapor pipeline, with an air inlet manifold ( 5 ) of the engine ( 1 ) in order to recirculate at least some of these vapors thereto when the valve ( 31 ) is open, in which method an idle speed controller (ISC, 47 ) acts upon the idle speed of the engine, and including in particular the following steps: i) a command to open the purge valve ( ii) the idle speed controller (ISC, iii) the data supplied to the engine control unit (ECU, PCM,