scholarly journals Cutting duration and performance parameters of a harvester’s sawing unit under real working conditions

2020 ◽  
Author(s):  
Robert Prinz ◽  
Kari Väätäinen ◽  
Johanna Routa
Keyword(s):  
Fuel Consumption ◽  
Working Conditions ◽  
Planning Process ◽  
Movement Time ◽  
Detailed Knowledge ◽  
Performance Parameters ◽  
Future Studies ◽  
Stem Size ◽  
The Difference ◽  
And Performance

Abstract Amongst all the working elements of single grip harvesters, the working elements of felling and processing play an important role within the cut-to-length (CTL) harvester’s working phases. This includes the felling cutting and cross-cutting of stems within the felling and processing operation. The detailed investigation of such individual machine activities may help to analyse and improve the performance of forest machines. The objective of this study was to investigate the cutting duration and other performance parameters, including the fuel consumption, of a CTL harvester’s sawing unit under real working conditions. Detailed information on the felling cutting and cross-cutting performance was collected at short intervals using CAN bus data of two single grip harvesters in final felling from two different sites in Eastern Finland. As a result, models for effective time consumption in the work phase of cutting as a function of stem size were developed, both for felling cutting and cross-cutting. Felling cutting and cross-cutting durations were somewhat identical until the cutting diameters of 400–450 mm, depending on the site. Thereafter, the cutting time difference increased and was higher in felling cutting. At the site with large diameters of 550–650 mm, the difference varied between 15% and 28%, between the comparisons of formulae. In addition, other performance parameters, including the respective fuel consumption of this working phase, were part of the study. The study revealed a higher hourly based fuel consumption for the entire guide bar movement time compared to the pure cutting time in cross-cutting with stem diameters below 400 mm. Detailed knowledge of the performance of the sawing unit’s activities might help the planning process of future studies, as well as support the future development of efficient and intelligent machinery.

scholarly journals The Technological Progress of the Fuel Consumption Rate for Passenger Vehicles in China: 2009–2016

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2384 ◽  
Author(s):  
Jihu Zheng ◽  
Rujie Yu ◽  
Yong Liu ◽  
Yuhong Zou ◽  
Dongchang Zhao
Keyword(s):  
Fuel Consumption ◽  
Technological Progress ◽  
Consumption Rate ◽  
Joint Venture ◽  
Passenger Vehicles ◽  
Fuel Consumption Rate ◽  
The Difference ◽  
And Performance ◽  
The Relationship ◽  
Better Than

China has set stringent fuel consumption rate (FCR) targets to address the serious environmental and energy security problems caused by vehicles. Estimating the technological progress and tradeoffs between FCR and vehicle attributes is important for assessing the viability of meeting future targets. In this paper, we explored the relationship between vehicle FCR and other attributes using a regression model with data from 2009–2016. We also quantified the difference in the tradeoff between local and joint venture brands. The result showed that from 2009 to 2016, if power and curb mass were held constant, 2.3% and 2.9% annual technological progress should have been achieved for local and joint venture brands, respectively. The effectiveness of fuel-efficient technologies for joint venture brands is generally better than that of local brands. Impacts of other attributes on FCR were also assessed. The joint venture brands made more technological progress with FCR improvement than that of local brands. Even if 100% of technological progress (assume the technological progress in the future were the same as that of 2009–2016) investment were used to improve actual FCR after 2016, it would be difficult to meet 2020 target. Accelerating the adoption of fuel-efficient technologies, and controlling weight and performance, are both needed to achieve the 2020 and 2025 targets.

scholarly journals The effect of setup of three point linkage on energetic and performance parameters of tractor aggregate

2011 ◽  
Vol 59 (5) ◽  
pp. 253-262
Author(s):  
Marek Tatíček ◽  
František Bauer ◽  
Pavel Sedlák ◽  
Jiří Čupera
Keyword(s):  
Fuel Consumption ◽  
Diesel Fuel ◽  
Linear Dependence ◽  
Can Bus ◽  
Specific Consumption ◽  
Performance Parameters ◽  
Fuel Temperature ◽  
Engine Load ◽  
Bus Network ◽  
And Performance

The object of this paper is to analyze the effect of setup of three point linkage on energetic and performance parameters of tractor aggregate. For this purpose were made two series of measurements. The first series was realized with the tractor NewHolland T7050 aggregate with 5-furrow reversible plough plough KUHN HUARD VM 150 5 NS. Data such as engine load, engine revolution, diesel fuel consumption, diesel fuel temperature, were got from CAN Bus network during the measurement. Then were measured following parameters total time of ploughing, dephth of ploughing, time of turning and swath of the tractor aggregate. The specific consumption of diesel fuel and the efficiency of the aggregate were calculated using the aforementioned parameters.The second series of measurements was realized with the tractor Zetor Proxima Plus 115 aggregate with four-furrow plough Kverneland 150 B. During the measurement the data such theoretical and actual speed of the tractor and force in the top link of three point hitch were recorded in the computer. Then were measured following parameters such as main time of ploughing, dephth of ploughing and swath of the tractor aggregate. By the first and second tractor aggregate were approved linear dependence of slip, performance and fuel consumption on the force in top link of three point linkage.

scholarly journals The Influence of Using the Traction Booster of the Semi‑Mounted Plough on the Performance Parameters of the Ploughing Set

2018 ◽  
Vol 66 (2) ◽  
pp. 381-388 ◽  
Author(s):  
Lukáš Renčín ◽  
Adam Polcar ◽  
František Bauer
Keyword(s):  
Fuel Consumption ◽  
Confidence Intervals ◽  
Positive Influence ◽  
Performance Parameters ◽  
Effective Performance ◽  
The Difference ◽  
The Given

The objective of this article is to verify the influence of the use of the traction cylinder of the semi‑mounted plough on the performance parameters of the ploughing set., Claas Axion 850 set, equipped with Hexashift mechanical stepped gearbox, fully geared under the load of Pöttinger semi-mounted plough was used for the purposes of the measurement. Assessed parameters included force in the upper rod, slip, effective performance of the set and fuel consumption. The results of the measurement clearly indicate the positive influence of the traction booster on the performance and energetic parameters of the ploughing set. By increasing the force in the upper rod, the torque is transferred to the land-wheel which partially relieves the furrow wheel and transfers the weight pertaining to this wheel to the land-wheel. This has decreased the slip (between 0 – 15 MPa: 7.5 % for plant-bed wheel and 2 % for furrow wheel) and increased the performance of the set (hectare efficiency was increased by 3.7 %) while reducing consumption and eliminating the undesirable compaction. The difference of effective consumption was between the pressure 0 and 15 MPa 0,6 l/ha which corresponds to a decrease of 2.6 % and 2.89 ml/m3, equal to a decrease of 3.9 %. Except for some exceptions, the changes of the monitored parameters were not statistically significant. This was caused especially due to the conditions of the measurement and also due to the chosen aggregation. The measured values fluctuated due to soil non-homogeneity, which was subsequently reflected in the size of the confidence intervals and due to the fact that the tractor was under-dimensioned for the given conditions and the plough construction, the influence of the traction booster has not been proven to such an extent.

scholarly journals The Effect of Using a Rocker Arm on the Performance and Efficiency of a 200cc 4 Stroke Motor

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Afif Fakhruddin ◽  
A'rasy Fahruddin
Keyword(s):  
Fuel Consumption ◽  
Thermal Efficiency ◽  
Motor Vehicle ◽  
Engine Performance ◽  
Effective Pressure ◽  
Performance Parameters ◽  
Power Mean ◽  
Vehicle Engine ◽  
And Performance ◽  
Wheeled Vehicles

In Indonesia, many people often use two-wheeled vehicles compared to four-wheeled vehicles, and so many people want the best speed and performance of their motorbikes compared to the manufacturer's standards. Modifying the camshaft or what is more familiarly known as "papas noken or camshaft" aims to increase volumetric efficiency and change the character of an engine, so that the engine produces more power and as needed. In racing motorbikes, modifications have been made to several systems and components, including the camshaft or camshaft to improve the motorbike's performance. Motor vehicle engine performance parameters include torque, power, mean effective pressure, specific fuel consumption, thermal efficiency, and air-material ratio. fuel air and fuel. In general, motorbikes for competition have been modified mechanical components and systems.

scholarly journals Mechanical properties of dense mycelium-bound composites under accelerated tropical weathering conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xin Ying Chan ◽  
Nazanin Saeidi ◽  
Alireza Javadian ◽  
Dirk E. Hebel ◽  
Manoj Gupta
Keyword(s):  
Mechanical Properties ◽  
Working Conditions ◽  
Maximum Stress ◽  
Compressive Loading ◽  
International Standards ◽  
Tropical Conditions ◽  
Tension And Compression ◽  
Tropical Weathering ◽  
The Difference ◽  
And Performance

AbstractMycelium, as the root of fungi, is composed of filamentous strands of fine hyphae that bind discrete substrate particles into a block material. With advanced processing, dense mycelium-bound composites (DMCs) resembling commercial particleboards can be formed. However, their mechanical properties and performance under the working conditions of particleboards are unknown. Here, we show how weathering conditions affect the DMC stress and elastic modulus. DMC was made using Ganoderma lucidum mycelium grown on a substrate of sawdust and empty fruit bunch. The DMC was then subjected to weathering under tropical conditions over 35 days and tested under flexural, tensile, and compressive loading with reference to international standards. After exposure to specified weathering conditions, the maximum stress in flexure, tension, and compression decreased substantially. The addition of a protective coating improved the resistance of DMC to weathering conditions; however, the difference between coated and uncoated samples was only found to be statistically significant in tensile strength.

A Modification of the Payne-Jones Method of Identifying Abnormal Differences in WISC-R Performance and Verbal IQ's

1996 ◽  
Vol 12 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Louis M. Hsu
Keyword(s):  
Full Scale ◽  
True Score ◽  
Verbal Iq ◽  
Score Difference ◽  
The Difference ◽  
And Performance

The difference (D) between a person's Verbal IQ (VIQ) and Performance IQ (PIQ) has for some time been considered clinically meaningful ( Kaufman, 1976 , 1979 ; Matarazzo, 1990 , 1991 ; Matarazzo & Herman, 1985 ; Sattler, 1982 ; Wechsler, 1984 ). Particularly useful is information about the degree to which a difference (D) between scores is “abnormal” (i.e., deviant in a standardization group) as opposed to simply “reliable” (i.e., indicative of a true score difference) ( Mittenberg, Thompson, & Schwartz, 1991 ; Silverstein, 1981 ; Payne & Jones, 1957 ). Payne and Jones (1957) proposed a formula to identify “abnormal” differences, which has been used extensively in the literature, and which has generally yielded good approximations to empirically determined “abnormal” differences ( Silverstein, 1985 ; Matarazzo & Herman, 1985 ). However applications of this formula have not taken into account the dependence (demonstrated by Kaufman, 1976 , 1979 , and Matarazzo & Herman, 1985 ) of Ds on Full Scale IQs (FSIQs). This has led to overestimation of “abnormality” of Ds of high FSIQ children, and underestimation of “abnormality” of Ds of low FSIQ children. This article presents a formula for identification of abnormal WISC-R Ds, which overcomes these problems, by explicitly taking into account the dependence of Ds on FSIQs.

Effect of Feeding Bt176 Maize on Physiological and Performance Parameters in Broiler Chickens

2004 ◽  
Vol 15 (3) ◽  
pp. 246-246
Author(s):  
M.A. Tony ◽  
A. Butschke ◽  
J. Zagon ◽  
H. Broll ◽  
M. Schauzu ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Performance Parameters ◽  
And Performance ◽  
Effect Of Feeding

Design and planning of the balanced scorecard: A case study

2007 ◽  
Vol 26 (3) ◽  
pp. 217-227
Author(s):  
Ming-Hon Hwang ◽  
Hsin Rau
Keyword(s):  
Performance Evaluation ◽  
Balanced Scorecard ◽  
Process Management ◽  
Planning Process ◽  
Company Performance ◽  
Correct Process ◽  
The Balanced Scorecard ◽  
Strategy Planning ◽  
And Performance

In the industrial economy, evaluating company performance based on financial results was good enough. However, in the current globalized and highly competitive environment, maintaining long term competitiveness requires companies to engage in overall strategic planning and performance evaluation. The balanced scorecard is a tool or method for balancing an organization's performance and can react to situations where a company's direction becomes disoriented. This approach assists in strategy planning, process management, and performance evaluation from four perspectives, including financial, customer, internal process, and learning and growth. Good strategy planning provides companies with a correct management direction, correct process management ensures the efficient execution of plans, and correct performance evaluation illustrates the execution results. This study mainly focuses on how a large rubber company in Taiwan utilizes the balanced scorecard in its organization. As the technical perspective is important in the rubber keypad industry, besides the four above perspectives, this company has added the technical perspective. By introducing this company and its progress in implementing the balanced scorecard, this study hopes to provide other companies, especially rubber companies, with a planning direction and reference for the future implementation of the balanced scorecard.

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