The on line Rapid Estimation of The Power Performance and Mechanical Losses of Engines Shang Dong Polytechnic Univ

Format:

Conference/Event

Author/Creator:

Cheng, Yong, author.

Conference Name:

International Fall Fuels & Lubricants Meeting & Exposition (1998-10-19 : San Francisco, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

In this paper, the authors proposed a method for on line rapid estimation of power performance and mechanical losses of engines.The power and mechanical losses of an engine are estimated based on the principle of inertia acceleration-deceleration and the measurement of transient crankshaft speed variation that were taken from the updated data acquisition processing measurement system. The calculation, feature and function of the on line rapid estimation methods are described. The derived power and mechanical losses using this method were compared to the results by dynamometer. The experimental equipment as well as the results are illustrated.Using this method, the characteristic mechanical efficiency of the engine as well as the cylinder's relative compression[1][2], starting and acceleration performance could also be estimated easily.The testing results of 4 and 6-cylinder engines show that the estimated measurement error is within ±2.5% for power, ±5% for torque over the whole speed range, and ±5% for cylinder relative compression[5]. So it is a proper method and tool for on line estimation of power, mechanical losses and cylinder compression et cetera of engines especially mounted in vehicles

Notes:

Vendor supplied data

Publisher Number:

982686

Access Restriction:

Restricted for use by site license