Cylinder-Pressure-Based Engine Control Using Pressure-Ratio-Management and Low-Cost Non-Intrusive Cylinder Pressure Sensors

Abstract

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Extending Lean Operating Limit and Reducing Emissions of Methane Spark-Ignited Engines Using a Microwave-Assisted Spark Plug

“…where p max is the maximum pressure with ignition and p motoring-max is the maximum pressure while motoring (no ignition) [24]. The MPR determines if a cycle has completely combusted, partially burned, or misfired (no combustion) [24].…”

“…The MPR determines if a cycle has completely combusted, partially burned, or misfired (no combustion) [24]. For methane, at λ = 1.68, the limits of complete combustion, partial burn, and misfire were identified as…”

Otimização Operacional De Um Motor a Gás Natural De Uma Termelétrica Através Da Integração Em Malha Fechada Dos Sistemas De Monitoramento Da Pressão Nos Cilindros E De Controle Motor

“…A referência [3] aponta o custo dos sensores como proibitivos para aplicações em produção em massa, mas àquela época já havia sido introduzida a técnica para controle do tempo de ignição em aplicações no mercado doméstico do Japão. A referência [4] propõe, em 2000, um conceito alternativo de sensor de baixo custo e exploraram ainda diferentes metodologias para o tratamento dos dados de pressão e atuação em malha fechada considerando diversas funções objetivo, com resultados promissores.…”

Development of a control-oriented model to optimise fuel consumption and NOX emissions in a DI Diesel engine

“…In some cases, these models can adapt to the engine changes along time, ensuring the same operation from the factory calibration until after several thousand hours of use [11]. This control strategy uses predictive mathematical models of the processes in order to estimate the future behaviour of the system for given control inputs, thus optimising the selection of the control signals [1,6,10,12,13,14,15,16]. In this scenario, in-cylinder pressure provides direct information on combustion development [6,17,18,19,20,21], as peak pressure, indicated mean effective pressure or heat release.…”