Full-load Miller cycle with ethanol and EGR: Potential benefits and challenges

Martins, Mario; Lanzanova, Thompson

doi:10.1016/j.applthermaleng.2015.06.086

Cited by 53 publications

(23 citation statements)

References 29 publications

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“…In contrast, the EIVC mode only achieves a BSFC reduction of 2.0% compared with the base cam [65]. It is worth noting that the ideal efficiency is higher in the case of EIVC because of the lower compression work compared with LIVC [60,66]. However, detailed investigations have determined that EIVC has an adverse effect on in-cylinder charge motion and requires sophisticated optimization of the combustion system [33,67,68].…”

Section: Over-expansion Cyclesmentioning

confidence: 96%

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Shuai

et al. 2018

Automot. Innov.

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Gasoline direct injection (GDI) engines are currently the dominant powertrains for passenger cars. With the implementation of increasingly stringent fuel consumption and emission regulations worldwide, GDI engines are facing challenges owing to high particulate matter emissions and a tendency to knock, leading to a change in the research and design (R&D) issues compared with those in the twentieth century. This paper reviews the progress in research regarding GDI engine technologies over the past 20 years, focusing on combustion system configurations, and also highlights common issues in GDI R&D, including preignition and deto-knock, soot formation and PM emissions, injector deposits and gasoline compression ignition (GCI). First, an overview of recent developments in the field as driven by regulations is provided, following which progress in injection and combustion systems is examined. Third, the review addresses the occurrence and mechanism of deto-knock and considers means of suppressing this phenomenon. The fourth section discusses soot formation mechanisms and particulate matter emission characteristics of GDI engines and describes the application of gasoline particulate filter (GPF) after-treatment. The subsequent section summarizes studies regarding injector deposit formation, as well as pioneering research into GCI combustion modes. Finally, a summary and future prospects for GDI engine technologies are provided.

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Section: Over-expansion Cyclesmentioning

confidence: 96%

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Shuai

et al. 2018

Automot. Innov.

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“…The MC application increased the engine performance and decreased the maximum cycle temperature. Martins and Lanzanova [55] investigated the effects of application of the MC with ethanol and EGR combination into a spark ignition engine using a 1-D simulation software. It was reported that net indicated efficiency increased from 43.5% to 47%.…”

Section: Introductionmentioning

confidence: 99%

Comparative performance analyses of irreversible OMCE (Otto Miller cycle engine)-DiMCE (Diesel miller cycle engine)-DMCE (Dual Miller cycle engine)

Gonca

2016

Energy

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“…In the initial position, the angle between the bar and the horizontal direction is 0 E and it is considered as known. The roll of radius 2 R is in contact, at any moment, with the head of the valve, head considered as an arc of radius 1 R . The center of the arc is always situated at the distance d , considered known, from the vertical axis.…”

Section: The Mechanismmentioning

confidence: 99%

“…Some advantages of the Miller-Atkinson [1][2][3][4][5][6][7][8] cycle are given in [9,10] and we will not repeat the presentation here.…”

Section: Introductionmentioning

confidence: 99%

Elements of Cam’s Synthesis for a Distribution Mechanism for the Miller-Atkinson Cycle

Dragomir¹,

Mănescu²,

Stănescu

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this paper we present the synthesis of the cam for a distribution mechanism used for Miller-Atkinson cycle and described in previous works. The input data contain the angles at which the valve opens and closes, respectively, the dimensions of the main parts, the maximum displacement of the valve. and the law of motion of the valve. The authors consider that the law of motion of the valve is described by numerical values, even if in the simulation process they use analytical formulae for this displacement. The head of the valve is considered to be circular. A particular case of flat head of the valve is also described. The relative displacement of the lever and the valve is discussed in two hypotheses: symmetric position and asymmetric position of the contact point with respect to the axis of the valve. The contact between the head of the valve is assured by a cylindrical roller. The contact between the cam and the lever is considered with a roller tappet. In all cases the cam is obtained by numerical synthesis using a convenient angular degree. A great attention is paid to the convexity of the cam. The resulted cam is transformed in a convex one using the Jarvis March. The authors also perform a comparison between the theoretical profile of the cam and the profile of the convex cam. The reduced velocity and acceleration are obtained in all cases. Some aspects of the wear are discussed using the relative linear and angular velocities. The paper closes with a paragraph of conclusions.

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Full-load Miller cycle with ethanol and EGR: Potential benefits and challenges

Cited by 53 publications

References 29 publications

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Comparative performance analyses of irreversible OMCE (Otto Miller cycle engine)-DiMCE (Diesel miller cycle engine)-DMCE (Dual Miller cycle engine)

Elements of Cam’s Synthesis for a Distribution Mechanism for the Miller-Atkinson Cycle

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