초록 ▼

A modified in-line adsorber system capable of meeting the California ultra-low emission vehicle (REV) standard using a combination of burn-off catalyst and a modified adsorber constructed with an open flow region of substantially unobstructed flow having a hole or a region of larger cell openings to

A modified in-line adsorber system capable of meeting the California ultra-low emission vehicle (REV) standard using a combination of burn-off catalyst and a modified adsorber constructed with an open flow region of substantially unobstructed flow having a hole or a region of larger cell openings to increase the amount and rate of contact between the exhaust gas and the burn-off catalyst, and thereby reduce the light-off time of the burn-off catalyst. For best effect, the open flow region of the adsorber is positioned along the exhaust stream between the engine and the burn-off catalyst as defined by the exhaust flow path of least resistance.

대표청구항 ▼

[ We claim:] [1.] An in-line adsorber system comprising:a molecular sieve structure having an inlet and outlet end disposed in a housing, the molecular sieve structure having a desorption temperature, and comprising a first substantially unobstructed flow region, and a second more obstructed flow re

[ We claim:] [1.] An in-line adsorber system comprising:a molecular sieve structure having an inlet and outlet end disposed in a housing, the molecular sieve structure having a desorption temperature, and comprising a first substantially unobstructed flow region, and a second more obstructed flow region adjacent the first region, the first region being disposed in the housing such that it provides a substantially unobstructed flow path for exhaust gases in an exhaust gas stream flowing through the housing;a flow diverting means connected to a secondary air source and disposed in the housing for diverting a portion of the exhaust gases away from said first region by introducing a secondary air jet in the housing, the flow diverting means comprising one of either a tubular air injection port having a plurality of cone-shaped directional nozzles, an air injection collar having a plurality of nozzles, a tubular air injection port possessing a cone-shaped air injection nozzle, a tubular air injection port possessing a diverter plate, or an air injection tube.