HC Adsorber System for SULEVs of Large Volume Displacement

Keisuke Sano; Takashi Kawai; Satoshi Yoshizaki; Yasunori Iwamoto

doi:10.4271/2007-01-0929

2007-04-16

HC Adsorber System for SULEVs of Large Volume Displacement 2007-01-0929

A new HC adsorber system was developed to achieve California SULEV emission standards for a V8 5.0-liter engine application (i.e. LS600hL).

A HC adsorber system was first released on 2001 PZEV Prius (1.5-liter engine) in U.S.A. For the 5.0L application the substrate volume of both catalyst and adsorber had to be enlarged for a large volume displacement. Prius-type adsorber system could not be adopted for LS600hL because of the problems of installation. So, a new constructional adsorber was proposed.

However the increase of gas flow into the adsorber substrate was a problem for desorption. The gas flow into the adsorber substrate was found to be controllable by the specification adjustment of the “throat” and “retainer” parts of adsorber system. Thus the rapid desorption was successfully reduced, and the HC adsorber system achieved a 50% reduction of HC emission.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

HC Adsorber System for SULEVs of Large Volume Displacement 2007-01-0929

SAE MOBILUS