Models for Instantaneous Heat Transfer in Engines and the Manifolds for 1-D Thermodynamic Engine Simulation

Lakshminarayanan, P. A.; Galindo, José; Luján, José Manuel; Serrano, Juan José; Dolz, V.; Gómez, Juan Francisco Cerón

doi:10.1007/978-981-16-8570-5_3

Cited by 1 publication

(2 citation statements)

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“…There are a large number of articles focussing on the modernization of the design of inlet and/or outlet pipelines by improving the gas dynamics and heat transfer of flows in order to enhance the efficiency and environmental friendliness of RICE [12][13][14][15]. H. Talati et al developed an original design of the intake system with a variable length of the pipeline and four controlled throttle valves [12].…”

Section: Introductionmentioning

confidence: 99%

“…P.A. Lakshminarayanan and colleagues studied the effects of the diameter of the intake and outlet pipelines on the temperature after the turbocharger turbine during engine operation in a steady state and transient conditions [13]. In turn, G. Wang et al found that by upgrading the intake system and fuel supply system, it is possible to increase power by 3.5% and reduce specific fuel consumption by almost 2 g/(kWh) [14].…”

Section: Introductionmentioning

confidence: 99%

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Unsteady Heat Transfer of Pulsating Gas Flows in a Gas-Dynamic System When Filling and Emptying a Cylinder (as Applied to Reciprocating Machines)

Plotnikov

2023

Mathematics

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The thermal and mechanical perfection of the processes in the gas exchange system during the filling and emptying of the cylinder makes it possible to increase the productivity and efficiency of reciprocating machines for various purposes. The study was designed to obtain experimental data on the local heat transfer of pulsating flows in the intake and outlet pipelines of a piston engine model, their analysis, and mathematical description. The scientific novelty of the study is as follows: (1) the patterns of change in the local heat transfer coefficients of pulsating gas flows in the inlet and outlet pipelines for the piston engine model were obtained for the first time; (2) a mathematical description of the experimental data on local and average heat transfer in the inlet and outlet pipelines is proposed. The physical features of the change in the rate of heat transfer in the intake and exhaust systems for a full engine cycle are discussed. A spectral analysis of the harmonic functions of the change in the local heat-transfer coefficient in gas exchange systems is performed. A set of mathematical dependencies of changes in the local and average heat-transfer coefficients of flows in the inlet and outlet pipelines on operation factors are presented. These data can be used to assess the quality of filling and cleaning the cylinder, determining thermal stresses in the details of gas exchange systems, developing devices for using exhaust gas energy, creating engine control systems, and so on. Moreover, the results obtained can be used to adjust (and test) mathematical models, as well as refine engineering methods for calculating gas exchange processes in reciprocating machines for various purposes.

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