Development of Direct Injection Gasoline Engine - Study of Stratified Mixture Formation

Tomoda, Terutoshi; Sasaki, Shinya; Sawada, Daisaku; Saito, Akinori; Sami, Hiroshi

doi:10.4271/970539

Cited by 71 publications

(11 citation statements)

References 6 publications

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“…That is why the injector must be in the best possible condition to guarantee an adequate proportion of sprayed gasoline that generates a dosed and stable mixture for the combustion cycle [18].…”

Section: A Injetion System Usedmentioning

confidence: 99%

Proposal and Optimization of a Fuzzy Logic Model for Automobile Injection Diagnosis Using Evolutionary Algorithms

Pinzón

Espitia

Corral

et al. 2013

2013 International Conference on Mechatronics, Electronics and Automotive Engineering

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This article presents results for the design of a fuel injection diagnostic strategy for motor vehicles in Ciudad Juárez, Chihuahua. The first part of this research develops a diagnosis model for the injector MD162524, implementing Fuzzy Logic. Characterization of the diagnostic model took five injector operation tests (spray pattern, injector opening cycles at 3 revolution levels, electrical resistance measurements in the injector, injector flow at a constant pressure and activation of two levels of pressure in the injector) and 3 possible outcomes of diagnostic status (good shape, repairable, useless). In the final part of the investigation, two evolutionary algorithms are used as a tool to optimize the response of the model designed, generating data sets with decreasing measurement error.

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Section: A Injetion System Usedmentioning

confidence: 99%

Proposal and Optimization of a Fuzzy Logic Model for Automobile Injection Diagnosis Using Evolutionary Algorithms

Pinzón

Espitia

Corral

et al. 2013

2013 International Conference on Mechatronics, Electronics and Automotive Engineering

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“…They are not easily damaged, by severe shock and/or vibration, and they perform well over a wide temperature range [1]. They offer a wide range of applications from classical ultrasonic devices [2], [3], [4], [5], [6], fuel injection systems [7], [8], [9], [10], smart structures [11], [12], [13], [14], high precision positioning equipment [15], [16], [17] for electronic manufacturing and other domains, energy harvesting [18], [19], [20], [21], [22], [23], [24] and gas sensing [25]. These systems are particularly supported by the cleanroom technology, using the increasing possibility of micro fabrication techniques, to integrate active materials and designs with compliant structures.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of thinned PZT bulk technology based actuators devoted to a 6-DOF micropositioning platform

Benouhiba

Belharet

Bienaime

et al. 2018

Microelectronic Engineering

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Piezoelectric actuators are widespread in the design of micro/nanorobotic tools and microsystems, as they have a very interesting electromechanical coupling factor, in addition to their high dynamics and resolution performances. Studies toward the integration of such actuators in complex micromechatronic systems require the size reduction of these actuators while retaining a wide range of performances. Two main fabrication processes are currently used for the fabrication of piezoelectric actuators, providing very different behaviors: (i) the use of a bulk layers and (ii) the use of thin film growth. In this study, we propose to develop micropositioning actuators and platform whose performances are a trade-off between the performances from these two technologies. The proposed trade-off technology allows the development of microsystems with high stiffness, high torque and high dynamics (from technology (i)), as well as, large motion, low voltage and small size (from technology (ii)). Using this technology we designed and fabricated a thick film PZT platform containing eight unimorph beam bending actuators. The Platform allows a high level of performances, both in the static (displacement) and dynamic (first resonance frequency) regimes. The purpose of the fabricated platform is to improve the micromanipulation and microassembly processes, to the point where approaching and manipulating very small object with a high precision will be a very fast and simple operation. Theses devices were obtained through a room temperature mechanical thinning of a PZT thick layers, after the deposition of Nickel on the bottom side. The piezoelectric beam bending actuators have a 80 µm thick PZT layer on top of a 10 µm thick Nickel layer, a length of 5 mm and a width of 0.5 mm. Experimental characterization has shown that the static displacements obtained are in excess of 1.33 µm/V and the resonance frequencies are up to 1814 Hz, which are very convenient in high dynamics micropositioning applications such as microrobotics and microassembly tasks.

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“…Gasoline Direct Injection (GDI) technology has been demonstrated to offer lean burn fuel economy benefits of between 20 to 40% and reduced emissions (Iwamoto et al, 1997;Tomoda et al, 1997;Harada et al, 1997). The problem facing the automotive engineer is the lack of detailed fundamental and development data on GDI fuel sprays and their interaction with the in-cylinder flow dynamics.…”

Section: Introductionmentioning

confidence: 99%

Optical diagnostics and direct injection of liquid fuel sprays

Hargrave

Wigley

Allen³

et al. 2000

J Vis

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The research described here addresses the problem of a paucity of high quality data on the full field structure of high pressure liquid fuel sprays for gasoline direct injection, GDI, engines. The paper describes the application of phase Doppler anemometry, PDA, and single-shot laser sheet Mie imaging to the study of GDI sprays and discusses the methodologies adopted for the experimental systems and the optimisation of the techniques. Experimental data is presented which defines the spray structure in terms of PDA vector and scalar fields and single-shot CCD digital images. The work demonstrates the essential complementary nature of the single point and planar optical diagnostics for spray studies.

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Development of Direct Injection Gasoline Engine - Study of Stratified Mixture Formation

Cited by 71 publications

References 6 publications

Proposal and Optimization of a Fuzzy Logic Model for Automobile Injection Diagnosis Using Evolutionary Algorithms

Proposal and Optimization of a Fuzzy Logic Model for Automobile Injection Diagnosis Using Evolutionary Algorithms

Development and characterization of thinned PZT bulk technology based actuators devoted to a 6-DOF micropositioning platform

Optical diagnostics and direct injection of liquid fuel sprays

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