Research on Fuel Efficiency and Emissions of Converted Diesel Engine with Conventional Fuel Injection System for Operation on Natural Gas

Lebedevas, Sergėjus; Pukalskas, Saugirdas; Daukšys, Vygintas; Rimkus, Alfredas; Melaika, Mindaugas; Jonika, Linas

doi:10.3390/en12122413

Cited by 17 publications

(18 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A cheap source of biodiesel finding is a very pressing issue in today's fuel production [67][68][69][70]. Thus, the alcohols will be used in the processing of forest, food, and other biomass waste if it is suitable for use as a fuel in the transport sector.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

2020

View full text Add to dashboard Cite

The Article presents the results of the experimental research and numerical analysis of a compression ignition (CI) engine adapted for running on dual fuels of different composition (diesel and natural gas, diesel and biogas, biodiesel and natural gas, and biodiesel and biogas). The main goal was to find out the impact of different dual fuels on energy performance and emissions depending on the start of injection (SOI) of diesel and the crank angle degree (CAD). Pure conventional diesel fuel and second generation hydrotreated vegetable oil (HVO) (Neste) was used in the research. Natural gas contained 97 vol. % of methane. Biogas (biomethane) was simulated using a methane and carbon dioxide blend consisting of 60 vol. % of methane and 40 vol. % of carbon dioxide. Dual (liquid and gaseous) fuels were used in the tests, with the energy share of liquid fuels accounting for 40% and gas for 60%. The research results have shown that having replaced conventional diesel fuel with dual fuel, engine’s BTE declined by 11.9–16.5%. The use of methane in the dual fuel blend reduced CO2 volumetric fraction in the exhaust gases by 17–20%, while biomethane increased CO2 volumetric fraction by 10–14%. Dual fuel significantly increased CO and HC emissions, but NOx volumetric fraction decreased by 67–82% and smoke by 23–39%. The numerical analysis of the combustion process revealed changes in the ROHR (Rate of Heat Release) that affected engine efficiency and exhaust emissions was done by AVL (Anstalt für Verbrennungskraftmaschinen List) BOOST program.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

2020

View full text Add to dashboard Cite

show abstract

“…Experimental data were used to evaluate MM simulation results on a wide range of engine operating modes (Lebedevas et al 2019). In each operating mode, characterized by the combination -p me , n, j inj , the engine parameters were investigated using pure D, DF D/NG according to the compositions D60/NG40, D40/NG60, and D20/NG80 (where the figures for the D and NG indices correspond to the percentages of D and NG expressed as a percentage of the total fuel energy balance).…”

Section: Engine Test Modesmentioning

confidence: 99%

Mathematical Modelling of Indicative Process Parameters of Dual-Fuel Engines With Conventional Fuel Injection System

2020

View full text Add to dashboard Cite

Modern engine research uses multi-dimensional Mathematical Models (MMs) that are applicable to multi-fuel engines. However, their use involves the availability of detailed technical data on the design and characteristics of the engine, which is not always possible. The use of a one-dimensional MM is more expedient for the prediction of engine parameters, but their application for this purpose has not yet been sufficiently investigated. This publication presents the results of numerical studies evaluating the application of a one-dimensional MM with bi-phase Vibe combustion laws for dual-fuel (DF) Diesel (D) and Natural Gas (NG) engine power parameters. The motor test results of a high-speed 4ČN79.5/95.5 Diesel Engine (DE) with a conventional fuel injection system were used as adequacy criteria. The engines were operated with D100 and DF D20/NG80, in high- (HLM), medium- (MLM), and low- (LLM) load modes, and the angle of Diesel-fuel Injection Timing (DIT) was changed from −1 to −13 °CA in the Before Top Dead Center (BTDC) range. Modelling of the single-phase Vibe combustion law has limited applicability for efficient use only in HLM (with an error of 7%). In the MLM and LLM regimes, owing to non-compliance with real bi-phasic combustion with a strongly extended NG diffusive second phase, the modelling error is 50%. Individual MM matching in MLM and LLM in a DF D20/NG80 experiment detected a burn time increase from between 45 and 50 °CA, to 110 and 200 °CA, respectively. Limited use of the one-dimensional MM in the evaluation of DF engine performance has been identified. When comparing a one-dimensional MM with experimental data, a bi-phase law of heat release characteristic should be considered for better coincidence. In addition, individual MM matching with an experiment on each engine load mode ensured acceptable accuracy in testing and optimising the parameters of the indicator process, including DIT.

show abstract

“…However, there are two important disadvantages of using hydraulics. Firstly, the weight, which is caused by hydraulic liquid as well as mass of hydraulic sysem components and which is very important parameter related for example to fuel consumption and emisions, or to the braking characteristics of a vehicle [10,6]. Secondly, no liquid should be flowing out of any car seat in case of, for example an accident, which could not be ensured without many difficulties.…”

Section: Defined Points Of a Car Seatmentioning

confidence: 99%

Proposal of a Mechanism for Car Seat Movement

Pavelčík¹,

Bárta²,

Sapieta³

2020

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

This article is focused on the height adjustment of a front car seat. The goal was to design seat movement in pure vertical direction. The article begins with a theoretical introduction, in which the functions and parts of car seats were described. The next part contains possible schematic designs of a mechanism, as well as the reasons for possible changes of the contemporary mechanisms. Afterwards, some functional parameters of the chosen schematically-designed mechanism were calculated, the results could then be used for further calculations needed for the creation of a three-dimensional model of the mechanism. The article deals mainly with the theoretical principles, and there are many further possibilities for development within the subject.

show abstract

Research on Fuel Efficiency and Emissions of Converted Diesel Engine with Conventional Fuel Injection System for Operation on Natural Gas

Cited by 17 publications

References 46 publications

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

Mathematical Modelling of Indicative Process Parameters of Dual-Fuel Engines With Conventional Fuel Injection System

Proposal of a Mechanism for Car Seat Movement

Contact Info

Product

Resources

About