The effects of blending dimethyl ether with LPG on the engine operation and its efficiency

Abstract

The paper presents a continuation of a research program related to the activators for gaseous fuels used in modern vehicles. Selected vehicle dynamic parameters obtained by the application of a mixture of LPG and DME for the mass share of 0 to 26% have been presented. The object of the research was a 1.6 SI engine adapted to a combustion ofgase ous fuels. The authors present the results of the energy conversion effciency in a four cylinder SI 1.6 cm3 engine.

Dynamic parameters of a car with a SI engine fueled with LPG/DME blends

“…The results of these studies were published on an ongoing basis. The completed project included several research cycles, which included:  preliminary tests on a chassis dynamometer at full engine load, in the range of mixtures with DME content up to 26% by weight [7]  experimental tests on a chassis dynamometer at partial engine loads, in the range of mixtures with DME content up to 30% by weight [9]  experimental tests on a chassis dynamometer at partial engine loads, in the range of mixtures with DME content up to 30% by weight, with correction of the ignition advance [14]  simulation studies of thermodynamic processes occurring in the engine cylinder, based on the results of experimental studies (approved for publication)  tests of vehicle dynamics parameters when fueled with LPG/DME mixtures. This article elaborates on the research results obtained in the last of the above-mentioned stages.…”