Thermodynamic Efficiency Evaluation of an Indirect Injection Diesel Engine Dept. of Mechanical Engrg., Imperial College of Science and Technology (London/England)

Format:

Conference/Event

Author/Creator:

Watson, N., author.

Conference Name:

1979 Automotive Engineering Congress and Exposition (1979-02-26 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1979

Summary:

The lower efficiency of the indirect-injection diesel engine, with respect to the direct injection type, is due to additional heat transfer from the combustion chamber, gas pumping between chambers, later injection timing and a different burning rate schedule.The paper describes a project to isolate and quantify these reasons for low efficiencies, using a mathematical model, supported by experimental verification.The model is based on a two-zone system (main and pre-chamber), with component models for heat transfer, gas flow through the passage et cetera Experimentally derived heat release schedules in main and pre-chamber are used.It is shown that for a 0.1 m bore engine, with a Ricardo Comet Vb pre-chamber, the different burning rate schedule is the major contribution to the difference in efficiency, with injection timing and gas pumping being the least significant

Notes:

Vendor supplied data

Publisher Number:

790039

Access Restriction:

Restricted for use by site license