The hydrocarbon light-off time in engine exhaust is reduced by employing a hydrogen oxidation catalyst, a CO oxidation catalyst of light-off temperature for CO and/or hydrogen below ambient temperature, and sufficient oxygen and sufficient CO and/or hydrogen in the exhaust that the exothermic reaction of the oxygen with the CO and/or hydrogen over the CO oxidation catalyst generates enough heat to raise the temperature of the CO oxidation catalyst to at least the light-off temperature of the hydrocarbon oxidation catalyst.
申请公布号
WO9639576(A1)
申请公布日期
1996.12.12
申请号
WO1996GB01320
申请日期
1996.06.05
申请人
JOHNSON MATTHEY PUBLIC LIMITED COMPANY;FROST, JONATHAN, CHARLES;BENNETT, STEPHEN, CHARLES;LAFYATIS, DAVID, SCOTT;WALKER, ANDREW, PETER
发明人
FROST, JONATHAN, CHARLES;BENNETT, STEPHEN, CHARLES;LAFYATIS, DAVID, SCOTT;WALKER, ANDREW, PETER