The Influence of Cross-profiling of Inlet and Exhaust Pipes on the Gas Exchange Processes in Piston Engines

Plotnikov, L. V.; Жилкин, Б. П.; Brodov, Yu. M.

doi:10.1016/j.proeng.2016.06.729

Cited by 13 publications

(5 citation statements)

References 3 publications

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“…Figure 14 a shows the dependence w x = f (τ) for a pulsating flow when a poppet valve operates in the intake system with a frequency of 25 Hz (crankshaft speed: n = 3000 rpm). The damped oscillations after the main peak are reverse-pressure waves that occur in the intake manifold after abrupt valve closure [ 43 , 44 ]. The measuring system qualitatively records all speed variations for a given case.…”

Section: Solving Applied Problems (The Measurement Of Pulsating Gas F...mentioning

confidence: 99%

A Thermal Anemometry Method for Studying the Unsteady Gas Dynamics of Pipe Flows: Development, Modernisation, and Application

Plotnikov

2023

Sensors

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A detailed study of the gas-dynamic behaviour of both liquid and gas flows is urgently required for a variety of technical and process design applications. This article provides an overview of the application and an improvement to thermal anemometry methods and tools. The principle and advantages of a hot-wire anemometer operating according to the constant-temperature method are described. An original electronic circuit for a constant-temperature hot-wire anemometer with a filament protection unit is proposed for measuring the instantaneous velocity values of both stationary and pulsating gas flows in pipelines. The filament protection unit increases the measuring system’s reliability. The designs of the hot-wire anemometer and filament sensor are described. Based on development tests, the correct functioning of the measuring system was confirmed, and the main technical specifications (the time constant and calibration curve) were determined. A measuring system for determining instantaneous gas flow velocity values with a time constant from 0.5 to 3.0 ms and a relative uncertainty of 5.1% is proposed. Based on pilot studies of stationary and pulsating gas flows in different gas-dynamic systems (a straight pipeline, a curved channel, a system with a poppet valve or a damper, and the external influence on the flow), the applications of the hot-wire anemometer and sensor are identified.

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Section: Solving Applied Problems (The Measurement Of Pulsating Gas F...mentioning

confidence: 99%

A Thermal Anemometry Method for Studying the Unsteady Gas Dynamics of Pipe Flows: Development, Modernisation, and Application

Plotnikov

2023

Sensors

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“…5 и 6). Скорость потока газов после закры-тия выпускного клапана не становится равной нулю и наблюдаются некоторые флуктуации скорости [21]. Схожий эффект наблюдался и для впускной системы (см.…”

Section: газодинамика и локальная теплоотдача в выпускной системеunclassified

“…Установлено, что в случае использования в выпускной системе двигателя профилированного участка наблюда-ется возросший объемный расход газа через систему (увеличивается пропускная способность) при всех на-чальных условиях, что, вероятно, связано со стабили-зирующим влиянием вихревых структур, образующих-ся в углах квадратного и треугольного участков [21]. Увеличение расходных характеристик через выпускную систему с профилированным участком, по мнению ав-торов, приведет к улучшению очистки цилиндров от отработавших газов, что в перспективе должно вызвать повышение мощности двигателя.…”

Section: газодинамика и локальная теплоотдача в выпускной системеunclassified

О Влиянии Поперечного Профилирования Каналов На Термомеханику Пульсирующих Потоков

Бродов¹,

Жилкин²,

Плотников³

2018

Журнал Технической Физики

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“…Partial balance involves balancing a part of the total inertia force of the crankshaft assembly. The first method does not use a full-symmetry mechanism [16]. The structure of two sliding blocks is adopted.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Balance Two-Dimensional Measuring of Crankshaft Assembly in Motorcycle Engine

et al. 2020

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A crankshaft assembly has different structure and dynamic characteristics than a normal revolved body, which leads to problems in dynamic balance measurement and imbalance compensation of it. The traditional method used to measure crankshaft assemblies is too inefficient to meet the modern manufacturing industry's requirements. Inspired by the challenges, methods for dynamic balance measurement and imbalance compensation of it are proposed in this paper. First, three typical dynamic balance models of a crankshaft assembly are built for different unbalanced mass distributions. Then, the unbalanced inertial force and unbalanced characteristic parameters are formulated and analyzed. Based on dynamic balance modeling and synthesis, an imbalance compensation method is proposed by drilling-out at a specific angle of the crankshaft. Finally, the dynamic balance measurement experiment is conducted, and the results validate that the proposed method is fast and accurate.

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The Influence of Cross-profiling of Inlet and Exhaust Pipes on the Gas Exchange Processes in Piston Engines

Cited by 13 publications

References 3 publications

A Thermal Anemometry Method for Studying the Unsteady Gas Dynamics of Pipe Flows: Development, Modernisation, and Application

A Thermal Anemometry Method for Studying the Unsteady Gas Dynamics of Pipe Flows: Development, Modernisation, and Application

О Влиянии Поперечного Профилирования Каналов На Термомеханику Пульсирующих Потоков

Dynamic Balance Two-Dimensional Measuring of Crankshaft Assembly in Motorcycle Engine

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