The Unsteady Gas Exchange Characteristics of a Two-Cycle Engine Mechanical Engineering Dept., (Northern Ireland)

Format:

Conference/Event

Author/Creator:

Blair, G. P., author.

Conference Name:

1976 SAE International Off-Highway and Powerplant Congress and Exposition (1976-09-13 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1976

Summary:

The theoretical modelling of the scavenge process for a naturally aspirated two-cycle engine is described and employed in conjunction with an unsteady gas dynamic analysis of flow in the engine ducting. Programmed for a digital computer, the results of this theoretical study are shown in relation to a 250 cm3 engine with values of predicted charging efficiency, scavenging efficiency, and delivery ratio given as a function of engine speed. These are compared with measured values of scavenging efficiency and the usual performance characteristics of power, mean effective pressure, delivery ratio, and specific fuel consumption. Also compared are the measured and predicted pressure diagrams taken in the cylinder, the crankcase, and the exhaust and inlet ducts. The design of a somewhat unique cylinder gas sampling valve of the mechanical type is described and its usage discussed both theoretically and practically

Notes:

Vendor supplied data

Publisher Number:

760644

Access Restriction:

Restricted for use by site license