04 Emission Reduction by Cylinder Wall Injection in 2-Stroke S.I. Engines Yamaha Motor Company, Limited

Format:

Book

Conference/Event

Author/Creator:

Motoyama, Yuh, 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 direct injection system in which fuel was injected through the cylinder wall was developed and detailed investigation was made for the purpose of reducing short-circuit of fuel in 2-stroke engines. As a result of dynamo tests using 430cc single cylinder engine, it was found that the injector was best attached at a location as close to TDC as possible on the rear transfer port side, and that the entire amount of fuel should be injected towards the piston top surface. Emissions were worsened if fuel was injected towards the exhaust port or spark plug. Although the higher injection pressure resulted in large emissions reduction effects, it did not have a significant effect on fuel consumption. When a butterfly exhaust valve, known to be effective against irregular combustion in the light load range, was applied, it was found to lead to further reductions in HC emission and fuel consumption while also improving combustion stability

Notes:

Vendor supplied data

Publisher Number:

2002-32-1773

Access Restriction:

Restricted for use by site license