Commercial natural gas vehicles: tomorrow’s engine technologies for most stringent NOx and CO2 targets

Arnberger, Anton; Golini, Stefano; Mumford, David; Hasenbichler, Gernot

doi:10.1007/978-3-658-21015-1_21

Cited by 7 publications

(2 citation statements)

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“…The superiority of RCCI compared to other LTC techniques can be explained by its ability to achieve higher brake thermal efficiency (BTE) while maintaining low NO 𝑥 and PM levels [6]. Additionally, a 25% reduction of CO 2 has been observed with biofuels [7] and contemporary research proceeds towards flexible accommodation of hydrogen as low reactivity fuel [8].…”

Section: Introductionmentioning

confidence: 99%

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Low Temperature Combustion Modeling and Predictive Control of Marine Engines

Modabberian,

Storm,

Shamekhi

et al. 2024

Applied Sciences

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The increase of popularity of reactivity-controlled compression ignition (RCCI) is attributed to its capability of achieving ultra-low nitrogen oxides (NOx) and soot emissions with high brake thermal efficiency (BTE). The complex and nonlinear nature of the RCCI combustion makes it challenging for model-based control design. In this work, a model-based control system is developed to control the combustion phasing and the indicated mean effective pressure (IMEP) of RCCI combustion through the adjustments of total fuel energy and blend ratio (BR) in fuel injection. A physics-based nonlinear control-oriented model (COM) is developed to predict the main combustion performance indicators of an RCCI marine engine. The model is validated against a detailed thermo-kinetic multizone model. A novel linear parameter-varying (LPV) model coupled with a model predictive controller (MPC) is utilized to control the aforementioned parameters of the developed COM. The developed system is able to control combustion phasing and IMEP with a tracking error that is within a 5% error margin for nominal and transient engine operating conditions. The developed control system promotes the adoption of RCCI combustion in commercial marine engines.

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Section: Introductionmentioning

confidence: 99%

“…Estimating the maximum equivalence ratio involves considering the mixing degree of diesel fuel, which is contingent on the ignition delay. Given that the start of combustion has been previously estimated using Equation (1), the apparent ignition delay (𝜃 ID ) in crank angle degrees (CAD) is computed as shown in Equation (7).…”

mentioning

confidence: 99%