Concept Design of a Low-Noise Industrial Engine

1989 ◽  
Vol 203 (4) ◽  
pp. 247-254
Author(s):  
J M Sawer ◽  
M D Ford-Dunn
Keyword(s):  
Low Noise ◽  
Concept Design ◽  
Design Concepts ◽  
Engine Design ◽  
Environmental Demands

A fundamental re-evaluation of industrial engine design concepts is made to take into account modern environmental demands. A range of diesel and gasoline powerplants, incorporating many low-noise features, is suggested.

Using Simulation and Optimization Tools to Decide Engine Design Concepts

2000 ◽  
Author(s):  
H. - M. Koegeler ◽  
G. Regner ◽  
T. Sams ◽  
K. Gschweitl
Keyword(s):  
Simulation And Optimization ◽  
Design Concepts ◽  
Engine Design

European and U.S. Engine Design Concepts After Introduction of Unleaded Fuel in Europe

1986 ◽  
Author(s):  
Dietrich Meyerdierks ◽  
Ernst Reinck ◽  
Rolf Urbansky ◽  
Ulrich Thomas
Keyword(s):  
Design Concepts ◽  
Engine Design

Comparison of Piston Concept Design Solutions for Composite Cycle Engines Part II: Design Considerations

2021 ◽  
Author(s):  
Dimitrios Chatzianagnostou ◽  
Stephan Staudacher
Keyword(s):  
Gas Turbine ◽  
Design Space ◽  
Piston Compressor ◽  
Design System ◽  
Surface Load ◽  
Preliminary Design ◽  
Concept Design ◽  
Piston Engine ◽  
Engine Design ◽  
Cylinder Piston

Abstract Hecto pressure composite cycle engines with piston engines and piston compressors are potential alternatives to advanced gas turbine engines. The nondimensional groups limiting their design have been introduced and generally discussed in Part I [1]. Further discussion shows, that the ratio of effective power to piston surface characterizes the piston thermal surface load capability. The piston design and the piston cooling technology level limit its range of values. Reynolds number and the required ratio of advective to diffusive material transport limit the stroke-to-bore ratio. Torsional frequency sets a limit to crankshaft length and hence cylinder number. A rule based preliminary design system for composite cycle engines is presented. Its piston engine design part is validated against data of existing piston engines. It is used to explore the design space of piston components. The piston engine design space is limited by mechanical feasibility and the crankshaft overlap resulting in a minimum stroke-to-bore ratio. An empirical limitation on stroke-to-bore ratio is based on existing piston engine designs. It limits the design space further. Piston compressor design does not limit the piston engine design but is strongly linked to it. The preliminary design system is applied to a composite cycle engines of 22MW take-off shaft power, flying a 1000km mission. It features three 12-cylinder piston engines and three 20-cylinder piston compressors. Its specific fuel consumption and mission fuel burn are compared to an intercooled gas turbine with pressure gain combustion of similar technology readiness.

Crankshaft Stress Analysis—Combination of Finite Element and Classical Analysis Techniques

1990 ◽  
Vol 112 (3) ◽  
pp. 268-275 ◽  
Author(s):  
A. R. Heath ◽  
P. M. McNamara
Keyword(s):  
Stress Analysis ◽  
Concept Design ◽  
Low Friction ◽  
Failure Investigation ◽  
Engine Design ◽  
Computer Based ◽  
Analysis System ◽  
High Level ◽  
Engine Components ◽  
Oil Films

The conflicting legislative and customer pressures on engine design, for example, combining low friction and a high level of refinement, require sophisticated tools if competitive designs are to be realized. This is particularly true of crankshafts, probably the most analyzed of all engine components. This paper describes the hierarchy of methods used for crankshaft stress analysis with case studies. A computer-based analysis system is described that combines FE and classical methods to allow optimized designs to be produced efficiently. At the lowest level simplified classical techniques are integrated into the CAD-based design process. These methods give the rapid feedback necessary to perform concept design iterations. Various levels of FE analysis are available to carry out more detailed analyses of the crankshaft. The FE studies may feed information to or take information from the classical methods. At the highest level a method for including the load sharing effects of the flexible crankshaft within a flexible block interconnected by nonlinear oil films is described. This method includes the FE modeling of the complete crankshaft and the consideration of its stress field throughout an engine cycle. Fatigue assessment is performed to calculate the distribution of fatigue safety factor on the surface of the crankshaft. This level of analysis can be used for failure investigation, or detailed design optimization and verification. The method is compatible with those used for vibration and oil film analysis.

Design concepts for a fast-readout low-noise CCD controller

1998 ◽  
Author(s):  
Rolf Gerdes ◽  
James W. Beletic ◽  
Raymond C. DuVarney
Keyword(s):  
Low Noise ◽  
Design Concepts

Paper 16: A Study of Tractor Noise Control

1969 ◽  
Vol 184 (17) ◽  
pp. 149-169
Author(s):  
J. Matthews ◽  
J. D. C. Talamo
Keyword(s):  
Hearing Loss ◽  
Diesel Engine ◽  
Noise Reduction ◽  
Noise Level ◽  
Exhaust System ◽  
Low Noise ◽  
Acoustic Features ◽  
Noise Levels ◽  
Engine Design ◽  
High Incidence

A high incidence of hearing loss has been encountered among tractor drivers, and noise levels are shown to be further increased by the addition of cabs, particularly those which are structurally strong to resist crushing if the vehicle overturns. Some reductions in the noise level of the operator's environment can be obtained by covering the engine or by exhaust system modifications, while possible future improvements to diesel engine design may effect a significant improvement. However, it is proposed that noise reduction is likely to be achieved by attention to acoustic features of the operator's cab. The inclusion of resilient mounts, substantial floors and bulkheads, and acoustically absorbent linings are all shown to provide worthwhile improvements and, in combination, these measures can reduce noise levels from more than 100 dBA to 90 dBA or less. Where the tractor is fitted with a safety frame only, a low noise fabric cladding is shown to be feasible.

scholarly journals PAWON JELAMBAR SEBAGAI TEMPAT KULINER DAN THIRD PLACE DI JELAMBAR DENGAN PENDEKATAN PERANCANGAN GREEN CONTEMPORARY DESIGN

2020 ◽  
Vol 2 (2) ◽  
pp. 1245
Author(s):  
Charles Darwin ◽  
Rudy Trisno
Keyword(s):  
Interior Design ◽  
Building Design ◽  
High Density ◽  
Concept Design ◽  
Third Place ◽  
Site Analysis ◽  
Design Concepts ◽  
Form And Function ◽  
Residential Population ◽  
And Function

Jelambar, Grogol Petamburan, with Jelambar Baru and Wijaya Kusuma, are one united district with a high density of residential population, that have hobby and habit on culinary business, that form many culinary centers and spread unevenly until Jelambar that caused Jelambar to have no culinary center like other districts have. Pawon Jelambar is designed to resolve issues of Jelambar that has no third place that needed by the district with a high density of population; also the low intensity of culinary. However, there are so many neglected small culinary businesses, because of many factors, one of them is a less strategic location. Pawon Jelambar wants to realize Jelambar’s unconsciously need of forming a place of culinary that integrated and has a clarity, by substitute all the small culinary businesses with Pawon Jelambar, with the purpose to increase culinary needs quality of Jelambar. This project is designed through designing stages as a method of design, such as understanding the district segment of Grogol Petamburan; arranging a diagram of issues of Jelambar and issues solving concept; design concept as the result of questionnaire answers analysis; zoning and space programs; analysis of project’s site determination; site analysis. All these analyses form building mass concepts; exterior and interior design; architectural details. The design result is Pawon Jelambar that uses the design concepts, such as green contemporary design, form and function runs together, and contextualism in responding site; with variants of culinary, mini market, culinary workshops, temporary exhibition, and food gallery, as the main architectural programs. Keywords: Architecture; Culinary; Jelambar; Pawon Jelambar; Third place AbstrakJelambar, Grogol Petamburan, bersama Jelambar Baru dan Wijaya Kusuma adalah satu-kesatuan kawasan padat penduduk hunian yang memiliki hobi dan kebiasaan berdagang kuliner, sehingga muncul beberapa pusat-pusat kuliner, namun penyebarannya tidak merata sampai Jelambar, sehingga Jelambar tidak memiliki sebuah pusat kuliner layaknya di titik kawasan lain. Proyek Pawon Jelambar dirancang untuk mengatasi isu-isu yang diangkat, yaitu tidak adanya third place yang menjadi kebutuhan padat penduduk Jelambar; dan intensitas rendah kuliner, namun banyak usaha kuliner kecil yang dibangun warga, tetapi banyak yang mati karena faktor tertentu, seperti lokasi yang kurang strategis. Pawon Jelambar ingin mengwujudkan keinginan tidak sadar Jelambar dalam membentuk sebuah tempat kuliner yang terintegrasi dan jelas, salah satunya dengan cara mensubstitusikan usaha-usaha kecil kuliner tersebut dengan Pawon Jelambar, yaitu untuk meningkatkan kualitas kebutuhan kuliner di kawasannya. Metode perancangan menggunakan serangkaian tahapan perancangan, yaitu pemahaman segmen kawasan Grogol Petamburan; penyusunan diagram isu kawasan dan konsep penyelesaian isu; konsep perancangan hasil analisis jawaban kuisioner; zoning dan program ruang; analisis pemilihan tapak; analisis tapak; menghasilkan konsep massa bangunan; desain eksterior, interior, dan detail arsitektur. Kesimpulan hasil perancangan adalah Pawon Jelambar yang menerapkan konsep green contemporary building design (sustainable architecture), form and function runs together, dan contextualism in responding site; dengan program utama tempat varian kuliner, mini market, pelatihan kuliner, eksibisi temporer dan food gallery.

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