Jiangsu University of Science and Technology

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Zhenjiang, China
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Patent
Jiangsu University of Science and Technology | Date: 2015-06-01

A device for adjusting a fuel supply advance angle of a multi-cylinder diesel engine includes a gear chamber (3), a connecting disc (5) and a high-pressure fuel pump (2), wherein the gear chamber (3) and the connecting disc (5) are assembled in the diesel engine, and the high-pressure fuel pump (2) is arranged at a left end surface outside the gear chamber. A main shaft end of the high-pressure fuel pump (2) extends into the gear chamber (3) and is connected to the connecting disc (5). A right end surface of the connecting disc (5) is connected to a timing gear (6) of a fuel injection pump. A right end surface of the timing gear (6) of the fuel injection pump is provided with three penetrating circular-arc waist-shaped holes (61) that are away from the center and equally spaced along the circumference direction. Annular sizing blocks (63) are arranged on the waist-shaped holes (61). A penetrating circular hole (68) is arranged at a tail end of at least one of the waist-shaped holes (61) in a counterclockwise direction and away from the waist-shaped hole (61). The circular hole (68) is provided with a T-shaped nut (65), and the axis of the T-shaped nut (65) is in parallel with the end surface of the timing gear (6) of the fuel injection pump. A support screw (67) is arranged in the T-shaped nut (65), and the screw head of the support screw (67) is jacked against the annular sizing block (63). A method for adjusting a fuel supply advance angle of a multi-cylinder diesel engine is also disclosed. The adjusting device and the adjusting method are convenient for adjusting a fuel supply advance angle and therefore have high adjustment precision.


Patent
Jiangsu University of Science and Technology | Date: 2015-06-01

A bionic pectoral fin propelling device based on a planetary gear train, including a frame, a power source (1), a propelling part (2), left and right maneuvering parts (3), a fixed support plate (4), a movable support plate (5), a left pectoral fin (6), a right pectoral fin (7), a fish body (8), and a tail fin (9). The fixed support plate (4) and the movable support plate (5) are installed on the frame parallel to each other; the fixed support plate (4) is located in front of the movable support plate (5); and the left and right maneuvering parts (3) are located between the fixed support plate (4) and the movable support plate (5). The present invention solves the problem that the two pectoral fins are not synchronized, realizes variable speed propelling and left/right maneuvering, facilitates increasing the bearing capacity of the propelling device, and is particularly suitable in limited space applications.


Patent
Jiangsu University of Science and Technology | Date: 2015-06-01

Disclosed is a crosshead component of a large diesel engine. The crosshead component consists of a crosshead pin (1), slide blocks (2), wear-resisting plates (3), sealing covers (4), and a sleeve (5), and has a structure with H-shaped cross and longitudinal sections. The crosshead pin (1) is a cylinder provided with petal-shaped through holes. The slide blocks (2) are respectively fitted on and connected to outer circles of left and right ends of the crosshead pin (1). The sleeve (5) is inserted in and connected to the petal-shaped through holes (112) of the crosshead pin (1) to form oil inlet/return way cavities. Left and right end surfaces of the crosshead pin (1) are respectively connected to the sealing covers (4) for sealing the oil way cavities. Front and back ends of the slide blocks (2) are respectively connected to the wear-resisting plates (3). The crosshead component has excellent interchangeability, economy and convenience.


Wang Z.,China University of Mining and Technology | Wang N.,Jiangsu University of Science and Technology
Expert Systems with Applications | Year: 2012

This study investigates the quantitative relationship between knowledge sharing, innovation and performance. Based on the literature review, we develop a research model positing that knowledge sharing not only have positive relationship with performance directly but also influence innovation which in turn contributes to firm performance. This model is empirically tested using data collected from 89 high technology firms in Jiangsu Province of China. It is found that both explicit and tacit knowledge sharing practices facilitate innovation and performance. Explicit knowledge sharing has more significant effects on innovation speed and financial performance while tacit knowledge sharing has more significant effects on innovation quality and operational performance. © 2012 Elsevier Ltd. All rights reserved.


Ye T.,Jiangsu University of Science and Technology
Computers and Industrial Engineering | Year: 2012

Shortening manufacturing lead time and then gaining time-based competitive advantages are the goals that many more manufacturing companies want to gain. Lot streaming is one of the important methodologies that can be applied by many companies to gain such advantages. In this paper, we focus on the effects of different types of transfer (i.e.; preceding-operator-based, successive-operator-based, and non-operator-based) between each pair of stages on the optimal number of transfer batches. With regard to those types of transfer, there are 2 × 4 × 2 problems to be analyzed. To simplify the analysis, we refine the problems to three dominating cases. For each dominating problem, the properties of the objective function (i.e.; the makespan) are derived, and the optimal number of transfer batches is determined accordingly. The numerical study illustrates the developed results, and moreover, provides two other important findings. © 2011 Elsevier Ltd. All rights reserved.


Song Y.,Jiangsu University of Science and Technology
PLoS ONE | Year: 2014

De novo sequencing is an important computational approach to determining the amino acid sequence of a peptide with tandem mass spectrometry (MS/MS). Most of the existing approaches use a graph model to describe a spectrum and the sequencing is performed by computing the longest antisymmetric path in the graph. The task is often computationally intensive since a given MS/MS spectrum often contains noisy data, missing mass peaks, or post translational modifications/mutations. This paper develops a new parameterized algorithm that can efficiently compute the longest antisymmetric partial path in an extended spectrum graph that is of bounded path width. Our testing results show that this algorithm can efficiently process experimental spectra and provide sequencing results of high accuracy. © 2014 Yinglei Song.


Song Y.,Jiangsu University of Science and Technology
Theoretical Computer Science | Year: 2014

In this paper, we develop a new parameterized algorithm for the Independent Feedback Vertex Set problem. Given a graph G=(V,E), the goal of the problem is to determine whether there exists a vertex subset F⊆V such that V-F induces a forest in G and F is an independent set. We show that there exists a parameterized algorithm that can determine whether a graph contains an IFVS of size k or not in time O(4kn2). To our best knowledge, this result improves the known upper bound for this problem, which is O(5knO(1)). © 2014 Elsevier B.V.


Chang Z.,Jiangsu University of Science and Technology
Chemical Communications | Year: 2011

A facile and efficient strategy was developed for preparing "firecracker-shaped" ZnO/polyimide (PI) hybrid nanofibers by combining electrospinning and hydrothermal process, which exhibited high photocatalytic activity. © 2011 The Royal Society of Chemistry.


Liu N.,Jiangsu University of Science and Technology
Journal of Non-Crystalline Solids | Year: 2012

On the basis of the gravity difference and the temperature dependence of the interfacial energy of the separated phases, the amalgamation of the droplets of minor phase was affected by Stokes sedimentation and Marangoni motion during the liquid-phase separation. Moreover, the velocity of Stokes motion increased distinctly with the undercooling, while the velocity of Marangoni motion was slightly impacted. At the beginning of the liquid-phase separation, the droplets of minor phase were dominated by Marangoni motion when the droplets radius was small. As the droplets radius increased by combination, the effect of Stokes sedimentation strengthened gradually. Additionally, the coagulation process was mainly controlled by Stokes sedimentation when a critical radius rd was far exceeded. © 2011 Elsevier B.V. All rights reserved.


Ye T.,Jiangsu University of Science and Technology
International Journal of Production Economics | Year: 2014

In this study, we focus on inventory management issues under simultaneously horizontal (equivalently inter-brand) and vertical (equivalently intra-brand) substitution. The analysis is divided into two distinct scenarios: centralized inventory management, where all brands are managed by a central decision maker; and decentralized inventory management, where each brand is managed by an independent decision maker. For the two situations, the optimal and the equilibrium order quantities are developed. Moreover, we find that there exist situations when the order quantities are greater in the centralized setting than in the competitive setting for some products. © 2014 Elsevier B.V.

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