A Method of Estimating Gasoline Engine Performance Sophia Univ

Format:

Conference/Event

Author/Creator:

Gomi, Tsutomu, author.

Conference Name:

International Congress & Exposition (1996-02-26 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1996

Summary:

When the power or specific fuel consumption is estimated in design process, thermodynamic consideration for the estimation is generally insufficient. Hence, a theory that can estimate these performances accurately is investigated in this paper.As a result of investigation, it is clear that the effect of pumping loss in wide-opene throttle valve operation has to be excluded from the mechanical loss which is measured in the motoring test. It also becomes clear that a new coefficient called pumping loss coefficient ηP has to be considered for the negative work for pumping.From the foregoing, theoretical formulas for estimating the net power Pe and net specific fuel consumption be. which are formed with various efficiencies and coefficients are as follows:It is verified that the estimation from these formulas agree well with the experimental test values using stoichiometric mixture ratio. By using these formulas, the mechanism for improvement of specific fuel consumption in the lean burn engine is also examined by analyzing the effect of air/fuel ratio on Pe and be

Notes:

Vendor supplied data

Publisher Number:

960011

Access Restriction:

Restricted for use by site license