Reduction of HC Emission from VTEC Engine During Cold-Start Condition Honda Research and Development Company, Limited

Format:

Conference/Event

Author/Creator:

Nakayama, Yukio, author.

Conference Name:

International Congress & Exposition (1994-02-28 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1994

Summary:

In the cities of the U.S. the worsening ozone problem has attracted attention and prompted reinforcement of regulations against emissions of hydrocarbons (HC) from automobiles. To cope with this situation, a reduction of HC is a vital challenge for the automotive industry. HC emission comes mainly from a cold engine, which usually uses a richer air-fuel mixture to achieve stable combustion and secure good driveability.The purpose of this paper is to show that using a engine with variable valv1e timing and lift system (VTEC) (1)(2) it is possible to reduce considerably HC emission in cold-start conditions. In other words, it is able to employ a leaner mixture than in existing engines (A/F=15.5) by using the VTEC system to alter the valve timing and lift according to various driving conditions, thereby considerably reducing HC emissions due to the improvement and stabilization of engine combustion

Notes:

Vendor supplied data

Publisher Number:

940481

Access Restriction:

Restricted for use by site license