Tractor-Engine Design Requirements For Best Fuel Utilization

With the development of engine supercharging technology and the application of in-cylinder direct injection technology, engines with high power and torque have become a trend. Crankshaft, as one of the most important and expensive parts in tractor engine, plays the role of transforming linear motion into circular rotation. The damage and destruction of crankshaft will lead to the damage of other parts of the engine, which makes the engine unable to work normally, and its stability affects the reliability of the whole engine to a great extent. The main failure form of tractor engine crankshaft is bending fatigue failure, so alternating bending stress occurs in crankshaft, which may cause fatigue failure of crankshaft. Crankshaft is one of the important components of tractor engine, and its stress is complex, which is the key and difficult point of engine design. In this paper, the crankshaft of tractor engine is analysed and studied based on compound supercharging technology, so that the dynamic characteristics of the engine are deeply understood, the action law of dynamic working load is mastered, the response analysis and evaluation of the system are carried out, and the optimization method of crankshaft mechanism of agricultural tractor engine is found out.

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Problems and Solutions for Sand Environment Operation of Helicopter Gas Turbines

ASME 1968 Gas Turbine Conference and Products Show ◽

10.1115/68-gt-37 ◽

1968 ◽

Cited By ~ 2

Author(s):

G. C. Rapp ◽

S. H. Rosenthal

Keyword(s):

Gas Turbines ◽

Field Experience ◽

Development Program ◽

Flight Test ◽

Aerodynamic Design ◽

Test Program ◽

Turbine Engine ◽

Engine Design ◽

Problems And Solutions ◽

Design Requirements

This paper is of two parts: a review of the experience of the T58 in an erosive environment, and a review of the design considerations, development testing and field experience in the T64 program relative to operation in a sand environment. Combat operation of various T58-powered helicopters showed erosion to be the major cause of engine premature removals. A description is given of problems encountered and of the design improvements and maintenance procedures implemented to minimize erosion effects. Field experience and redesign effort established general guidelines applicable to future turbine engine design and installations for helicopter and V/STOL aircraft. Mechanical and aerodynamic design requirements for sand environment operation are discussed as applicable to the T64, including the test experience obtained during the development program. Results are presented of the flight test program to evaluate the effectiveness of the inertial separator installed on the Sikorsky CH-53. Relative engine conditions are reviewed and compared to SEA field experience.

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Knowledge Transfer: From Maintenance to Engine Design

Journal of Computing and Information Science in Engineering ◽

10.1115/1.2840777 ◽

2008 ◽

Vol 8 (1) ◽

Cited By ~ 7

Author(s):

Sylvia C. Wong ◽

Richard M. Crowder ◽

Gary B. Wills ◽

Nigel R. Shadbolt

Keyword(s):

Life Cycle ◽

Knowledge Transfer ◽

Digital Libraries ◽

Design Parameters ◽

Front Line ◽

Design Task ◽

Knowledge Based ◽

Engine Design ◽

Design Requirements ◽

Areas Of Concern

As manufacturers shift their focus from selling products to providing services, designers must therefore increasingly consider the life-cycle requirements in addition to conventional design parameters. To identify possible areas of concern, engineers must consider knowledge gained through the life cycle of a related product. However, because of the size and distributed nature of a company’s operation, engineers often do not have access to front-line maintenance data. Additionally, the large number of documents generated during the design and operation of a product makes it impractical to manually review all documents thoroughly during a design task. This paper presents a prototype knowledge-based document repository for an aeroengine manufacturer. The developed system searches and analyzes distributed document resources, and provides engineers with a summary view of the underlying knowledge. The aim is to aid engineers in creating design requirements that incorporate maintenance issues. Unlike existing document repositories and digital libraries, our approach is knowledge based, where users browse summary reports instead of following suggested links. To test the validity of our architecture, we have developed and deployed a prototype of our knowledge-based document repository. The repository has been demonstrated to and validated by the engine design community.

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