Machinery for forestry. Portable hand-held brush cutters and grass trimmers with backpack mounted combustion engine power source. Safety requirements and testing

To increase productivity in agricultural production, combined wide-grip machines are being created, aggregated with tractors of traction classes from 5 and higher. In addition, according to agrotechnical requirements, the pressure of the mover on the soil should be minimal, as well as the number of passes over the surface of the field. These contradictions can be solved by ballasting of tractors, which allows using engine power to increase tractive effort. Ballasting affects energy saturation. Increased energy saturation with appropriate ballasting makes it possible to compose machine-tractor units (MTU) according to a more accurate ratio of the tractor pulling force and the unit's pulling resistance. The most in demand in modern agriculture are tractors of 5-6 traction classes produced by domestic and foreign tractor-building plants with an internal combustion engine with a capacity of 220-320 kW and an operating weight of 115-150 kN. The article contains a two-way analysis of variance, which makes it possible to determine the greatest influence on the ballasting of a tractor. A diagram is constructed that gives an idea of which of the studied brands of tractors can be recommended for performing agricultural operations, taking into account ballasting and compliance with agrotechnical requirements. Keywords: TRACTOR, BALLASTING, ENERGY SATURATION, TWO-FACTOR ANALYSIS OF VARIANCE

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On Moore’s Law and Its Application to SI Engine Technology

ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005) ◽

10.1115/icef2005-1237 ◽

2005 ◽

Author(s):

Marc LaViolette

Keyword(s):

Power Density ◽

Manufacturing Industry ◽

Combustion Engine ◽

Logistic Function ◽

Electronics Manufacturing ◽

Si Engine ◽

Moore’S Law ◽

Moore's Law ◽

Exponential Trend ◽

Engine Power

Moore’s law relates how the integration of semiconductors has progressed in time. This research shows that the exponential trend shown in the electronics manufacturing industry can have applications elsewhere. This study shows that the internal combustion engine followed the same trend for over 70 years. Though not the most used engine variable, engine power density shows the same trends for engines as transistor density does for microchips. This now mature technology has ended its period of rapid growth. However the present day engine trends can show how Moore’s law can be extended to include the slower growth of long established technologies. Because exponential growth cannot go on forever, the extension Moore’s law requires that the logistic function be used. The new function also allows one to predict a theoretical value for maximum power density.

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Design and Research of Diesel Engine Governor Actuator Based on Finite Element Analysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.634-638.3762 ◽

2013 ◽

Vol 634-638 ◽

pp. 3762-3765

Author(s):

Xiao Hong Wu

Keyword(s):

Finite Element ◽

Diesel Engine ◽

Lead Time ◽

Combustion Engine ◽

Design Quality ◽

Element Analysis ◽

Finite Element Software ◽

Design And Manufacturing ◽

Design Cost ◽

Engine Power

A kind of diesel engine governor used in the combustion engine power station is introduced. During the governor designed and researched, 3D model of the governor is built, virtual assembly is simulated and appearance is evaluated used Pro/E software. The key part is also analyzed used ABAQUS, which is a kind of finite element software. Thus, all defects is deleted in the designing phase, lead time of the product is shortened, design cost is decreased, design quality is improved and the foundation is supplied to parameterization design and manufacturing.

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The Research and Application of the Internal Combustion Engine Power Plant--Rotary UPS Monitoring Systems

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.328-330.2207 ◽

2011 ◽

Vol 328-330 ◽

pp. 2207-2210

Author(s):

Xiao Jing Sun ◽

Xing Gui Wang ◽

Chun Ning Wang

Keyword(s):

Power Plant ◽

Internal Combustion Engine ◽

Power Supply ◽

Combustion Engine ◽

High Reliability ◽

Internal Combustion ◽

System Structure ◽

Monitoring Systems ◽

Continuous Power ◽

Engine Power

The Internal Combustion Engine Power Plant and Flywheel Battery were the two primarily compositive units of the Internal Combustion Engine Power Plant --Rotary UPS, among them the Internal Combustion Engine Power Plant ensured the continuous power supply to the load after the breaking of the mains supply, the Flywheel Battery ensured the uninterruptible continuous power supply to the load when mains supply switched to the Internal Combustion Engine Power Plant, so the paper started with the two units, Introduced the control system structure and principle, and focused on discussing the method of achieving the Internal Combustion Engine Power Plant --Rotary UPS telecommunication by Ethernet. The method had been applied in correlative production. The practice showed that it was convenient for usage and high reliability.

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High Power Very Low Voltage Electric Motor for Electric Vehicle

10.5772/intechopen.99134 ◽

2021 ◽

Author(s):

Daniel Matt ◽

Nadhem Boubaker ◽

Mourad Aitakkache ◽

Philippe Enrici ◽

Jean-Jacques Huselstein ◽

...

Keyword(s):

Low Voltage ◽

Combustion Engine ◽

Electrical Machine ◽

Power Splitting ◽

Voltage Range ◽

Safety Requirements ◽

Low Voltage Operation ◽

Voltage Limit ◽

Very High ◽

Electrical Supply

Electric vehicles are often designed in the same way as their conventional counterparts based on the internal combustion engine, they are heavy machines for comfort and safety reasons, and increasingly powerful. Under these conditions, in order to simplify the motor electrical supply system by reducing the current levels, the voltage chosen for the battery is very high and can go up to 700 V. However, for many applications where the power is relatively low (< 30 kW per motor), it can be more beneficial to size the system at very low voltage (< 60 V). This approach allows to overcome many constraining safety requirements and also to use off-the-shelf components (motor controllers, connectors, etc.) that are more easily available on the market in this voltage range. There are also many regulatory provisions that may require to stay within this voltage limit. This article presents a variety of very low voltage motorisation solutions with a required power up to 100kW. They use two complementary approaches. The first is to implement an original permanent magnet synchronous machine technology with an optimised armature winding for low voltage operation. The second is based on power splitting where the electrical machine being designed to be driven by multiple controllers. Many examples of low-voltage motorised vehicles (sporty vehicle, tractor, re-motorised automobile, etc.) are illustrated in this article.

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