Control of the combustion behaviour in a diesel engine using early injection and gas addition

Carlucci, Antonio Paolo; Ficarella, Antonio; Laforgia, Domenico

doi:10.1016/j.applthermaleng.2006.03.016

Cited by 44 publications

(12 citation statements)

References 16 publications

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“…Daisho et al [18], tried three methods including diesel injection timing advancing, intake air throttling, and EGR to overcome the poor performance at low loads, and they found the application of hot EGR is the best means of them, which could raised thermal efficiency, reduced smoke levels, and maintained low NOx levels. Carlucci et al [19], investigated the controlling of combustion behaviour by application of injection strategy and natural gas addition, and underlined that by using the natural gas as an additive fuel (10e30%) while diesel fuel as main injection, resulted in unchanged engine efficiency, improved NOxesoot trade-off, but higher HC and CO emissions compared with original operation mode. In another work, Carlucci et al [20,21], further studied the effects of air bulk motion and methane injection strategies on the development and pollutant levels of dual-fuel combustion on a common rail engine.…”

Section: Introductionmentioning

confidence: 98%

Experimental study of co-combustion ratio on fuel consumption and emissions of NG–diesel dual-fuel heavy-duty engine equipped with a common rail injection system

Zhang

Song

2016

Journal of the Energy Institute

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Section: Introductionmentioning

confidence: 98%

Experimental study of co-combustion ratio on fuel consumption and emissions of NG–diesel dual-fuel heavy-duty engine equipped with a common rail injection system

Zhang

Song

2016

Journal of the Energy Institute

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“…Lots of work has been done in fuel path for spark ignition engines, such as in [2] [3] [4]. For diesel engine fuel path, [5] uses early injection and gas addition to improve engine combustion and reduce pollutant emissions.…”

Section: Introductionmentioning

confidence: 99%

Fuel path control of a diesel engine at the operating point of the low load and medium speed

Deng

Xue

Stobart

et al. 2011

2011 Chinese Control and Decision Conference (CCDC)

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Current control implementations for engines are proving unwieldy for emerging emissions standards and fuel economy demand. Calibration is becoming progressively more complex as the number of controlled variables increases. The issues are acute with diesels. We describe a project in which a detailed investigation of the fuel path dynamics in a modern engine is made. This is an initial work about diesel engine fuel path control. In order to facilitate the control development, a medium speed (1550 rpm) and low torque (250Nm) point is chosen to develop the control strategy as it is believed that this is the safe point to start with the fuel path work. The development of fuek path control is difficult as the nature of fuel injection parameters affects the whole engine performance significantly and quickly. This paper demonstrates a closed-loop control and an architecture of controllable injection for C6.6 engine based on predictive control that could control exhaust temperature, of nitrogen oxides (NOx) and particular matters (PM) without changing the fuel quantity at medium speed and low load point.

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“…Their performance is highly dependent on the quality of the air-fuel mixture preparation, the injection strategy, and the minimization of cycle-to-cycle and spray-to-spray variations [2,3]. The development of direct injection diesel engines is strictly related to simultaneous reduction of specific fuel consumption and exhaust emissions, which can be achieved, in addition to incorporation of exhaust after-treatment devices, by direct control of the combustion process [4]. In recent years, the common rail injection system with electronic control has been established as the standard concept in fuel injection systems for diesel engines due to the flexibility it offers for controlling the injection rate, timing, and injection duration [5], in addition to the control of injection pressure irrespective of engine speed and load [6].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of a multiple injection strategy on the development of high-pressure diesel sprays

Tonini

Gavaises

Theodorakakos³

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part D:

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Computational fluid dynamics results are presented providing information on the influence of multiple injection strategy on fuel vaporization characteristics under conditions typical of direct injection, turbocharged, high-speed automotive diesel engines. The fuel is assumed to be injected from a high-pressure common rail injector nozzle. Focus is given on the number of multiple injections and dwell-time on the evaporating spray plume development. Comparison between the different cases is performed in terms of liquid and vapour penetration curves, the spatial distribution of the air-fuel equivalence ratio and the fuel vapour spatial distribution difference between the cases considered. The results confirm that, under the operating conditions investigated, the liquid penetration length, known to freeze at a distance from the nozzle exit, is not significantly affected by the injection strategy, while vapour penetration follows the time-shift of the dwell-time. Longer dwell-times retard the diffusion of the vapour in the carrier gas. Although injection of small fuel quantities prior to the main pulse does not affect the liquid penetration, it contributes up to 5 per cent more stoichiometric fuel vapour present in the area of observed auto-ignition sites. Post injection and splitting of the main injection in two pulses modify the vapour distribution by creating two spatially separated fuel-rich zones.

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Control of the combustion behaviour in a diesel engine using early injection and gas addition

Cited by 44 publications

References 16 publications

Experimental study of co-combustion ratio on fuel consumption and emissions of NG–diesel dual-fuel heavy-duty engine equipped with a common rail injection system

Experimental study of co-combustion ratio on fuel consumption and emissions of NG–diesel dual-fuel heavy-duty engine equipped with a common rail injection system

Fuel path control of a diesel engine at the operating point of the low load and medium speed

Numerical investigation of a multiple injection strategy on the development of high-pressure diesel sprays

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