Effects of injection timing and rail pressure on particulate size-number distribution of a common rail DI engine fueled with fischer-tropsch diesel synthesized from coal

Geng, Limin; Xiao, Yonggang; Li, Shijie; Chen, Hao; Chen, Xubo

doi:10.1016/j.joei.2020.08.008

Cited by 45 publications

(17 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the HRIDs of the four test fuels shortened as the injection pressure increased when the injection timing was fixed at 6 • CA BTDC. It was because increasing the injection pressure makes the formation of the mixture more uniform, which can make the in-cylinder combustion much easier [42]. Moreover, the CD of the blend fuels decreased with the PODE increasing, which indicated that the addition of PODE sped up the in-cylinder combustion and promoted the concentrated heat release.…”

Section: Discussion For Optical Combustion Characteristicsmentioning

confidence: 98%

Combustion Study of Polyoxymethylene Dimethyl Ethers and Diesel Blend Fuels on an Optical Engine

Chen

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

Polyoxymethylene dimethyl ethers (PODE) are a newly appeared promising oxygenated alternative that can greatly reduce soot emissions of diesel engines. The combustion characteristics of the PODE and diesel blends (the blending ratios of PODE are 0%, 20%, 50% and 100% by volume, respectively) are investigated based on an optical engine under the injection timings of 6, 9, 12 and 15-degree crank angles before top dead center and injection pressures of 100 MPa, 120 MPa and 140 MPa in this study. The results show that both the ignition delay and combustion duration of the fuels decrease with the increasing of PODE ratio in the blends. However, in the case of the fuel supply of the optical engine being fixed, the heat release rate, cylinder pressure and temperature of the blend fuels decrease with the PODE addition due to the low lower heating value of PODE. The addition of PODE in diesel can significantly reduce the integrated natural flame luminosity and the soot formation under all injection conditions. When the proportion of the PODE addition is 50% and 100%, the chemical properties of the blends play a leading role in soot formation, while the change of the injection conditions have an inconspicuous effect on it. When the proportion of the PODE addition is 20%, the blend shows excellent characteristics in a comprehensive evaluation of combustion and soot reduction.

show abstract

Section: Discussion For Optical Combustion Characteristicsmentioning

confidence: 98%

Combustion Study of Polyoxymethylene Dimethyl Ethers and Diesel Blend Fuels on an Optical Engine

Chen

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, biodiesel production from non-food sources such as Moringa oleifera have drawn many researcher's attention, and most of them were focused on the application of this fuel in existing unmodified diesel engines [15][16][17][18][19][20]. Recently, Teoh et al [18] reported the effect of utilization of symmetric blend of Moringa Oil Biodiesel (MB) and baseline diesel fuel on particulate matter emission and brake thermal efficiency in an unmodified diesel engine.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Fuel Injection Parameters of Moringa oleifera Biodiesel-Diesel Blend for Engine-Out-Responses Improvements

et al. 2021

View full text Add to dashboard Cite

Biodiesel has gained popularity in diesel engines as a result of the rapid decline of fossil fuels and population growth. The processing of biodiesel from non-edible Moringa Oleifera was investigated using a single-step transesterification technique. Both fuels had their key physicochemical properties measured and investigated. In a common-rail diesel engine, the effects of MB50 fuel blend on the symmetric characteristics of engine-out responses were evaluated under five load settings and at 1000 rpm. As compared to standard diesel, MB50 increased brake thermal efficiency (BTE), and nitrogen oxides (NOx) emissions while lowering brake specific fuel consumption (BSFC), and smoke emissions for all engine loads. A further study of injection pressure and start of injection (SOI) timing for MB50 fuel was optimized using response surface methodology (RSM). The RSM optimization resulted in improved combustion dynamics due to symmetry operating parameters, resulting in a simultaneous decrease in NOx and smoke emissions without sacrificing BTE. RSM is an efficient optimization method for achieving optimal fuel injection parameter settings, as can be deduced. As a result, a clearer understanding of the use of MB50 fuel in diesel engines can be given, allowing for the best possible engine efficiency.

show abstract

“…With the development of the automobile industry, the four in-wheel motor independent drive electric vehicles (4WIDEVs) have attracted increasing attention due to their contribution to energy saving and environmental protection [1][2][3]. Moreover, the 4WIDEV has a lot of advantages compared with the centralized drive electric vehicles (CDEVs) [4], where the independent control of each wheel is of great benefit for the improvement of the vehicle stability control [5].…”

Section: Introductionmentioning

confidence: 99%

A Modified Unscented Kalman Filter Combined with Ant Lion Optimization for Vehicle State Estimation

Zhang

Zhao

et al. 2021

Mathematical Problems in Engineering

View full text Add to dashboard Cite

Accurate estimation of vehicle states is extremely crucial for vehicle stability control. As a reliable estimation methodology, the unscented Kalman filter (UKF) has been widely utilized in vehicle control. However, the estimation accuracy still needs to be improved caused by the unpredictable measurement and process noise. In this paper, a novel modified UKF state estimation methodology combined with the ant lion optimization (ALO) is proposed for the stability control of a four in-wheel motor independent drive electric vehicle (4WIDEV). First, the optimal performance of the ALO algorithm is analyzed, where both unimodal and multimodal optimization test functions are selected and optimized by GA, PSO, and ALO, respectively. The results indicate that the ALO algorithm has good global optimization capability and applicability. Second, the ALO algorithm is merged into the UKF to adjust the statistical properties of noise information for the ALOUKF estimator design without extra sensor signals. At last, the simulations on the Matlab/Simulink-CarSim co-simulation platform and the road test based on an A&D 5435 rapid prototyping experiment platform (RPP) are carried out to verify the proposed method. The simulation and experiment results demonstrate that the ALOUKF estimator can improve state estimation accuracy and resist the vehicle nonlinearity even in the case of the complicated and emergency maneuvers.

show abstract

Effects of injection timing and rail pressure on particulate size-number distribution of a common rail DI engine fueled with fischer-tropsch diesel synthesized from coal

Cited by 45 publications

References 40 publications

Combustion Study of Polyoxymethylene Dimethyl Ethers and Diesel Blend Fuels on an Optical Engine

Combustion Study of Polyoxymethylene Dimethyl Ethers and Diesel Blend Fuels on an Optical Engine

Optimization of Fuel Injection Parameters of Moringa oleifera Biodiesel-Diesel Blend for Engine-Out-Responses Improvements

A Modified Unscented Kalman Filter Combined with Ant Lion Optimization for Vehicle State Estimation

Contact Info

Product

Resources

About