Comprehensive analysis of combustion phasing of multi-injection HCCI diesel engine at different speeds and loads

Niklawy, W; Shahin, M.; Amin, Mohamed; Elmaihy, Ali

doi:10.1016/j.fuel.2021.123083

Cited by 18 publications

(6 citation statements)

References 36 publications

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“…With increasing engine speeds, the brake-specific CO and NO x emissions values increase and decrease, respectively. 14 According to Niklawy et al, 77 at 200 N m load, the temperature increases from about 1000-1500 K at 2500 rpm during the lowtemperature reaction and then increases to 2050 K at the end of the high-temperature reaction. The combustion phase is slowed, and the HRR reduces as the engine speed rises.…”

Section: Effect Of Speed Of the Enginementioning

confidence: 99%

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Das,

Debnath,

Negi

et al. 2023

Energy Science & Engineering

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The current study presents research investigations and developments related to the homogeneous charge compression ignition (HCCI) engine. Research investigations and recent advances, including the role of various operating conditions on HCCI engine combustion phenomena, emissions, and performance, are discussed. There is growing research interest in investigating HCCI engines with diesel fuel to study combustion, emissions, and performance characteristics due to their association with low NOx emissions. In the published literature, research investigations are also conducted with different fuels ranging from biomass to diesel to gasoline in the HCCI engine showing its capability for utilizing various fuels in coming years. The challenges associated with HCCI combustion are reviewed, and the details of excessive carbon monoxide and unburnt hydrocarbon emissions are discussed. The major parameters affecting the hydrogen addition in HCCI diesel engines are also discussed. Overall, adding hydrogen to a diesel‐fueled HCCI engine improves combustion phasing and can potentially increase thermal efficiency while lowering emissions. In addition, the strength, weaknesses, opportunities, and threat analysis is provided and discussed thoroughly.

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Section: Effect Of Speed Of the Enginementioning

confidence: 99%

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Das,

Debnath,

Negi

et al. 2023

Energy Science & Engineering

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“…Te fastest closed-loop feedback control system of the second-order integrator is shown in equation (2). Te signal v(t) is input according to equation (3).…”

Section: Complexitymentioning

confidence: 99%

“…Diesel engine is a complex power machine with high nonlinearity and time-varying characteristics [1], and it often operates under complex conditions such as variable speed, variable load, and variable environment, leading to continuous changes in the operating parameters and serious instability of diesel engine [2]. To ensure the proper operation of diesel engine under complex conditions, the control parameters must be adjusted quickly according to the engine operating status [3].…”

Section: Introductionmentioning

confidence: 99%

“…Also, diesel engine is a complex machine with fast time-varying, strong disturbance, and strong nonlinearity. It is a challenge to achieve good speed control performance under all operation conditions for diesel engine with traditional PID controller [10]; (2) it is hard to take control performance of both steady state and transient state into consideration [11]. And it is also difcult to deal with nonlinear problems for traditional PID controller because it is constructed of linear deviation combination; (3) the control parameters are unable to be changed timely according to the change of engine operating status.…”

Section: Introductionmentioning

confidence: 99%

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Model-Based Control with Active Disturbance Rejection Algorithm for a Diesel Engine

Ding

Tu³

et al. 2023

Complexity

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To improve the speed control performance of a diesel engine, the active disturbance rejection controller (ADRC) is designed by adding an arranging transition process to the traditional PID controller, extracting differential signals reasonably, and adopting nonlinear combination process to error signals. The ADRC is composed of a tracking differentiator (TD), an extended state observer (ESO), and a nonlinear state error feedback (NLSEF). Such constructed ADRC can adapt to the strong nonlinear and complicate working conditions of diesel engine for power generation. A simulation model of the diesel engine is built to verify the proposed ADRC, and simulation results are in good accordance with the experimental results. To further validate the advantages of the designed ADRC, the traditional PID is improved by TD. Meanwhile, performance comparisons are carried out between traditional PID controller, improved PID controller, and ADRC. Results present that the improved PID controller can achieve a better control performance than that of the traditional PID controller both in steady state and transient state. However, the ADRC can further improve the speed control performance evidently on the basis of the improved PID controller.

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“…Early direct fuel injection in-cylinder is possible to achieve HCCI (e.g., 100 deg BTDC [103]) with highly volatile fuels, such as ethanol, often preferred to help achieve a homogeneous mixture. Use of multiple fuel injections to achieve HCCI with diesel fuel is possible by controlling spray penetration and preventing fuel impingement on the walls while enhancing fuel-air mixing [104].…”

Section: Low Temperature Combustionmentioning

confidence: 99%

Multiple Fuel Injection Strategies for Compression Ignition Engines

Simpson

Depcik

2022

Energies

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Until the early 1990s, the predominant method of fuel delivery for compression ignition engines was the mechanical pump-line-nozzle system. These systems typically consisted of a cam-driven pump that would send pressurized fuel to the fuel injectors where injection timing was fixed according to the pressure needed to overcome the spring pressure of the injector needle. These configurations were robust; however, they were limited to a single fuel injection event per thermodynamic cycle and respectively low injection pressures of 200–300 bar. Due to their limited flexibility, a poorly mixed and highly stratified air fuel mixture would result in and produce elevated levels of both nitrogen oxides and particulate matter. The onset of stringent emissions standards caused the advancement of fuel injection technology and eventually led to the proliferation of high-pressure common rail electronic fuel injection systems. This system brought about two major advantages, the first being operation at fuel pressures up to 2500 bar. This allowed better atomization and fuel spray penetration that improves mixing and the degree of charge homogenization of the air fuel mixture. The second is that the electronic fuel injector allows for flexible and precise injection timing and quantity while allowing for multiple fuel injection events per thermodynamic cycle. To supply guidance in this area, this effort reviews the experimental history of multiple fuel injection strategies involving both diesel and biodiesel fuels through 2019. Summaries are supplied for each fuel highlighting literature consensus on the mechanisms that influence noise, performance, and emissions based on timing, amount, and type of fuel injected during multiple fuel injection strategies.

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Comprehensive analysis of combustion phasing of multi-injection HCCI diesel engine at different speeds and loads

Cited by 18 publications

References 36 publications

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Model-Based Control with Active Disturbance Rejection Algorithm for a Diesel Engine

Multiple Fuel Injection Strategies for Compression Ignition Engines

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