42 Catalytic Reduction of Marine Sterndrive Engine Emissions Southwest Research Institute

Format:

Book

Conference/Event

Author/Creator:

White, Jeff J., author.

Conference Name:

Small Engine Technology Conference & Exposition (2002-10-29 : Kyoto, Japan)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Tokyo, JAPAN Society of Automotive Engineers of Japan 2002

Summary:

A 2001 General Motors 4.3 liter V-6 marine engine was baseline emissions tested and then equipped with catalysts. Emission reduction effects of exhaust gas recirculation (EGR) were also explored. Because of a U.S. Coast Guard requirement that inboard engine surface temperatures be kept below 200°F, the engine's exhaust system, including the catalysts, was water-cooled.Engine emissions were measured using the ISO-8178-E4 5-mode steady-state test for recreational marine engines. In baseline configuration, the engine produced 16.6 g HC+NOx/kW-hr, and 111 g CO/kW-hours In closed-loop control with catalysts, HC+NOx emissions were reduced by 75 percent to 4.1 g/kW-hr, and CO emissions were reduced by 36 percent to 70 g/kW-hr of CO.The catalyzed engine was then installed in a Sea Ray 190 boat, and tested for water reversion on both fresh and salt water using National Marine Manufacturers Association procedures. Engine and emission control system performance were verified after on-water operation, and confirmed to be operating satisfactorily

Notes:

Vendor supplied data

Publisher Number:

2002-32-1811

Access Restriction:

Restricted for use by site license