| 摘要 |
A modified in-line adsorber system capable of meeting the California ultra-low emission vehicle (ULEV) standard using a combination of burn-off catalyst (40) and a modified adsorber (10) constructed with an open flow region of (15) 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 (40), and thereby reduce the light-off time of the burn-off catalyst (40). For best effect, the open flow region (15) of the adsorber (10) is positioned along the exhaust stream between the engine and the burn-off catalyst (40) as defined by the exhaust flow path of least resistance. <MATH> |
