L4Engine Development for a Super Ultra Low Emissions Vehicle Tochigi R&D Center, Honda R&D Company, Limited

Format:

Book

Conference/Event

Author/Creator:

Kitagawa, Hiroshi, author.

Conference Name:

SAE 2000 World Congress (2000-03-06 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2000

Summary:

HONDA has developed technology to fulfill the strictest emissions standards to date. That is, we have developed the technology necessary to satisfy the state of California's SULEV (LEVII) regulations. We were able to move from the conventional 600cell, 4.3mil threeway catalyst to a 1200cell, 2.0mil catalyst through the application of new canning technology. We were also able to achieve early catalyst lightoff and improved conversion performance without increasing the precious metal content. However, it was not possible to satisfy the SULEV standards using only these improvements to the catalyst. It was also necessary for us to develop new emission control technology for the various stages of engine operation: cold, warmup and post warmup. Specifically, we developed technology that dramatically increases catalyst lightoff speed by controlling intake air and ignition timing. Further, we developed technology to reduce exhaust emissions to the ultimate degree possible when the engine is cold and the catalyst is inactive. Also, in order to further improve the conversion performance of the catalyst once it is active, we developed a Secondary O2 Feedback Control System. This feedback system is an extremely high precision system that utilizes an adaptive sliding mode controller to identify various catalyst models in real time and predict the postcatalyst HEGO sensor output. The above technologies were used in combination to achieve the SULEV emissions standards

Notes:

Vendor supplied data

Publisher Number:

2000-01-0887

Access Restriction:

Restricted for use by site license