公开(公告)号：JPH10331628A

公开(公告)日：1998-12-15

申请号：JP14865998

申请日：1998-05-29

Applicant: ST MICROELECTRON INC

Inventor： SWANSON DAVID FRANK ,  ANDERSON STEPHEN WAYNE

IPC: F02N11/08 ,  F01N3/20 ,  F01N3/24 ,  F01N9/00 ,  H02J7/14

Abstract: PROBLEM TO BE SOLVED: To heat a catalyst converter early and decrease exhaust emission by carrying large current through the heating element of the catalyst converter via a rapid heating route with a catalyst switch for a prescribed period at the time of cold-starting an engine. SOLUTION: At the time of starting an engine, a lamp input 155 is made an L-level with a control module 130 to decrease the regulating voltage setting point of the voltage regulator 150 of a generator 170 and engine load torque. The relay single-pole double-throw switch contact 111 of an electric heating catalyst power switch 110 is connected to a heating element in an electric heating catalyst 120. The voltage regulator 150 is controlled so as to make the lamp input 155 an L-level with the control module 130, and a generator rotor field winding 190 is energized completely, by which the command of the full output of the generator 170 is given, and the increased voltage is carried through the electric heating catalyst 120 to heat it promptly.