The Potential of 50cc Four-Stroke Engines for Moped Applications The Queen's University of Belfast

Format:

Conference/Event

Author/Creator:

Callender, E., author.

Conference Name:

International Off-Highway & Powerplant Congress & Exposition (1998-09-14 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

Due to increasingly stringent emissions legislation the four-stroke engine is beginning to replace the two-stroke engine for motorcycle and scooter applications over 50cc. However, because of its comparatively poor performance, the four-stroke unit is not replacing the two-stroke for moped applications which are restricted to 50cc. To meet forthcoming European legislation the two-stroke moped engine requires an exhaust catalyst which presents considerable durability problems when applied to this type of engine. This would not be the case with a four-stroke unit, so if its performance could be improved it would be an attractive alternative. This paper illustrates the difficulties facing four-stroke engines of this size, the improvements required, the benefits (and problems) of a multi-valve approach and possible means of improving performance

Notes:

Vendor supplied data

Publisher Number:

982050

Access Restriction:

Restricted for use by site license