Patent ID: 9341545
Filing Date: 2016-05-17
CPC Classification: F01N,G01M,Y02T

Claim Text:
1. A method of testing the catalytic efficiency of an exhaust component when it has been removed from a vehicle, the exhaust component having a plurality of elongate channels through which exhaust gases flow, said channels extending between a first end face and a second end face of said component, and the method comprising: applying a first sealing means to said first end face of the exhaust component and applying a second sealing means to said second end face of the exhaust component, such that said first and second sealing means create a gas-tight seal and prevent exhaust gas flowing through a plurality of the channels of the exhaust component; causing an exhaust gas to flow through the exhaust component; and making measurements of a property of the exhaust gas before and after it has flowed through said exhaust component; wherein the flow of the exhaust gas through the channels is restricted by said first sealing means and said second sealing means such that the volume of the exhaust component through which the exhaust gas flows is reduced.