Coordinated Air-Fuel Path Control in a Diesel-E85 RCCI Engine

Willems, Frank; Kupper, Frank; Ramesh, Sudarshan; Indrajuana, Armando; Doosje, E Erik

doi:10.4271/2019-01-1175

Cited by 7 publications

(10 citation statements)

References 11 publications

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“…For this single-input single-output (SISO) controller, good reference tracking, and good disturbance rejection for changes in engine speed and injected fuel energy is shown. However, in the multiple-input multiple-output (MIMO) case, coupling can be encountered between the fuel control loops, as illustrated in [11,12,15]. This limits the control performance.…”

Section: Rcci Control Challengesmentioning

confidence: 99%

“…With this method, allowable ranges in variations in combustion behavior and effective rejection of external disturbances can be specified for stable engine performance. Similar to [15,19], the proposed MIMO feedback controller combines linear parameter-varying (LPV) static decoupling with a diagonal PI feedback controller. Both studies concentrated on next-cycle control functionality and transient performance.…”

Section: Research Objective and Main Contributionsmentioning

confidence: 99%

“…The corresponding optimal operational conditions are summarized in Table 3. More details on the selected engine control settings can be found in [15].…”

Section: Engine Operating Pointsmentioning

confidence: 99%

“…Wingmate ECU controls the E85 PFI and SPI injectors, such that the desired injection timing and quantity is realized; • dSPACE MABXII realizes the desired VGT and EGR valve position and diesel injection timing and quantity for the individual cylinders. Reprinted from [15] with permission. ©SAE International 2019.…”

mentioning

confidence: 99%

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Data-Driven Air-Fuel Path Control Design for Robust RCCI Engine Operation

Verhaegh¹,

Kupper²,

Willems

2022

Energies

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Reactivity controlled compression ignition (RCCI) is a highly efficient and clean combustion concept, which enables the use of a wide range of renewable fuels. Consequently, this promising dual fuel combustion concept is of great interest for realizing climate neutral future transport. RCCI is very sensitive for operating conditions and requires advanced control strategies to guarantee stable and safe operation. For real-world RCCI implementation, we face control challenges related to transients and varying ambient conditions. Currently, a multivariable air–fuel path controller that can guarantee robust RCCI engine operation is lacking. In this work, we present a RCCI engine controller, which combines static decoupling and a diagonal MIMO feedback controller. For control design, a frequency domain-based approach is presented, which explicitly deals with cylinder-to-cylinder variations using data-driven, cylinder-individual combustion models. This approach enables a systematic trade-off between fast and robust performance and gives clear design criteria for stable operation. The performance of the developed multivariable engine controller is demonstrated on a six-cylinder diesel-E85 RCCI engine. From experimental results, it is concluded that the RCCI engine controller accurately tracks the five desired combustion and air path parameters, simultaneously. For the studied transient cycle, this results in 12.8% reduction in NOx emissions and peak in-cylinder pressure rise rates are reduced by 3.8 bar/deg CA. Compared to open-loop control, the stable and safe operating range is increased from 25 °C up to 35 °C intake manifold temperature and maximal load range is increased by 14.7% up to BMEP = 14.8 bar.

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Section: Rcci Control Challengesmentioning

confidence: 99%

Section: Research Objective and Main Contributionsmentioning

confidence: 99%

“…The corresponding optimal operational conditions are summarized in Table 3. More details on the selected engine control settings can be found in [15].…”

Section: Engine Operating Pointsmentioning

confidence: 99%

mentioning

confidence: 99%

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Data-Driven Air-Fuel Path Control Design for Robust RCCI Engine Operation

Verhaegh¹,

Kupper²,

Willems

2022

Energies

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“…Together with the fact that ICEs exhibit non-linear dynamics presents a challenge for the control engineer. Over the years, several RCCI control approaches have been presented (see, e.g., [2][3][4][5] or [6] for a complete overview). They are typically based on a linear diagonal controller and a static decoupling.…”

Section: Introductionmentioning

confidence: 99%

Data-Based Control Structure Selection for RCCI Engines with Electrically Assisted Turbocharger

Vlaswinkel¹,

Jager²,

Willems³

2021

2021 European Control Conference (ECC)

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