Air cleaner assembly for reducing pollutants from being discharged into the atmosphere

As internal combustion engines wear, the annular spaces between the pistons and the cylinder tend to increase. In the combustion chamber of each cylinder, an air-fuel mixture is ignited. The expanding gas mixture forces the piston upwards generating power from the engine. In the expansion process, part of the gas mixture is forced between the annular spaces between the piston and the cylinder into the crankcase. These "blow-by" gases, which also include oil mist and unburned fuel, accumulate in the crankcase and must be vented from the crankcase to the atmosphere to prevent a potentially dangerous pressure build-up in the crankcase. In addition, unburned fuel can be present in the combustion chambers after the internal combustion engine is shut down. These hydrocarbons cannot get to the crankcase without the pistons moving, but they may escape through open valves and migrate back through the air intake system. In addition, the activated carbon canister may release significant amounts of stored hydrocarbons when a vehicle has not run for a number of days. An air cleaner assembly includes an adsorber member disposed in a fluid passageway of the air cleaner assembly for eliminating pollutants from being discharged into the atmosphere contained within the air cleaner assembly. The adsorber member comprises a support and a silicate pollutant treating material free from zeolite disposed onto a surface of the support.