Development of a Novel Uniflow-Scavenged Two-Stroke GDI Engine Queen's University, Canada

Format:

Conference/Event

Author/Creator:

Ohlmann, D., author.

Conference Name:

SAE 2006 World Congress & Exhibition (2006-04-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

This paper reports on the progress in the development and testing of a novel two-stroke gasoline direct-injection engine (GDI) that incorporates uniflow scavenging without the use of camshaft actuated poppet valves. Compressed air is fed into the cylinder through a matrix of passive check valves located in the cylinder head. Air-only scavenging, in combination with high-pressure GDI, ensures that traditional two-stroke pitfalls, such as high emissions and poor fuel economy due to short circuiting, are eliminated. The engine was successfully operated at speeds up to 5500 rpm. In-cylinder and intake plenum pressures were measured as a function of time and crank angle from which the check valve opening and closing time and the duration of the scavenging process was identified. The delivery ratio and air-fuel (A/F) ratio are reported

Notes:

Vendor supplied data

Publisher Number:

2006-01-0187

Access Restriction:

Restricted for use by site license