Institut Francais Du Pe'trole

Laurent Dayde

Michel Pasquereau

Richard Levesque

Jean-Fran&ccedil;ois Papagni

A unit for sampling aldehydes and ketones contained in diluted exhaust gases from thermal combustion engines has a specific trapping circuit and a simulation circuit that simulates the specific trapping circuit. The specific trapping circuit and the simulation circuit are arranged in parallel so that the diluted gases can be passed for some time in the simulation circuit ( ) before they are passed into the specific trapping circuit wherein aldehydes and ketones are trapped.

Process and unit for sampling aldehydes and ketones contained in exhaust gases

A process for sampling aldehydes and ketones contained in diluted exhaust gases from thermal combustion engines uses a sampling unit that has a specific trapping circuit and a simulation circuit that simulates the specific trapping circuit. The specific trapping circuit and the simulation circuit are arranged in parallel. The diluted gases are passed for some time in the simulation circuit ( ) before they are passed into specific trapping circuit wherein aldehydes and ketones are trapped.

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Suresnes, France

Laurent Dayde