Abstract
AbstractThe paper considers the impact of natural gas as a motor fuel on diesel engine friction and wear. According to the state energy strategy, the expansion of using NGVs is a very important area in the development of engine building. To implement the priority directions of the strategy, modernizing the existing diesel engines is proposed to switch them to gas–diesel cycle. The paper discusses the results of theoretical studies on the impact of using natural gas as a motor fuel on friction and wear of the D242 gas-powered diesel engine parts. A comparative analysis of mechanical losses and wear of the main friction members of the cylinder–piston assembly and the crank mechanism of the D242 diesel engine operating according to the gas and diesel cycle has been performed. Based on the study results and computational experiments, it has been found that the use of gas fuel in diesel engines effects positively on the friction and wear of gas-powered diesel engines.KeywordsDiesel engine D242Gas–diesel cycleGas engine fuelNatural gasMethaneFrictionWearMechanical lossesCylinder–piston assembly
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