[PDF] Stirling Engine Design And Feasibility For Automotive Use eBook

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Page : pages
File Size : 43,49 MB
Release : 1977
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A study was made to evaluate the potential of a Stirling engine for significant improvement in emissions and fuel economy over the present-day internal combustion engine and to initiate, on the basis of the experience gained in the Ford/Philips 170 hp Stirling engine development program, the design of an engine in the 80 to 100 hp range suitable for use in a passenger car in the 2,500 to 3,000 lb weight class. The final report given covers two major tasks. Task I was the Contractor-financed testing of a 170 hp Stirling engine powered Torino passenger vehicle. The fuel economy of the 170 hp Stirling engine-powered Torino approximates that of similar 1977 model year production passenger vehicles in a comparable weight class, with comparable performance. Emissions meet the objective of 0.41/3.4/0.4 grams per mile (HC/CO/NO/sub x/). Task II was a design study of an 80 to 100 hp engine in a passenger car in the 2,500 to 3000 lb weight class based on the 170 hp Torino installation. The baseline vehicle selected for comparison purposes is a 1976 Pinto with a 2.3 liter 4-cylinder engine. The engine is rated 84 hp, with 4 double-acting cylinders, each of 98 cc displacement (4 to 98), and utilizes a swashplate drive. The swashplate Stirling engines did not package well in the compact car. Despite optimization of the engine to achieve minimum length, the Stirling powered compact car was 89 mm (3.5 inches) longer than its Pinto baseline. Fuel economy of the swashplate engine was adversely affected by attempts to fit it within the Pinto engine compartment. The 4 cylinder-dual crankshaft Stirling engine resulted in a very attractive vehicle. The engine packaged within the confines of the Pinto engine compartment. However, the packageable engine did not incorporate the rotary preheater as used on the swashplate engine. Emissions and noise level objectives could be met.

Author : William Martini
Publisher : CreateSpace
Page : 414 pages
File Size : 45,36 MB
Release : 2013-01-25
Category :
ISBN : 9781482063035

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For Stirling engines to enjoy widespread application and acceptance, not only must the fundamental operation of such engines be widely understood, but the requisite analytic tools for the stimulation, design, evaluation and optimization of Stirling engine hardware must be readily available. The purpose of this design manual is to provide an introduction to Stirling cycle heat engines, to organize and identify the available Stirling engine literature, and to identify, organize, evaluate and, in so far as possible, compare non-proprietary Stirling engine design methodologies. This report was originally prepared for the National Aeronautics and Space Administration and the U. S. Department of Energy.

Author : William D. Ernst
Publisher :
Page : 174 pages
File Size : 24,74 MB
Release : 1997
Category : Science
ISBN :

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The objectives of the Automotive Stifling Engine (ASE) Development project were to transfer European Stirling engine technology to the United States and develop an ASE that would demonstrate a 30% improvement in combined metro-highway fuel economy over a comparable spark ignition (SI) engine in the same production vehicle. In addition, the ASE should demonstrate the potential for reduced emissions levels while maintaining the performance characteristics of SI engines. Mechanical Technology Incorporated (MTI) developed the ASE in an evolutionary manner, starting with the test and evaluation of an existing stationary Stirling engine and proceeding through two experimental engine designs: the Mod I and the Mod II. Engine technology development resulted in elimination of strategic materials, increased power density, higher temperature and efficiency operation, reduced system complexity, long-life seals, and low-cost manufacturing designs. Mod Ii engine dynamometer tests demonstrated that the engine system configuration had accomplished its performance goals for power (60 kW) and efficiency (38.5%) to within a few percent. Tests with the Mod II installed in a delivery van demonstrated a combined fuel economy improvement consistent with engine performance goals and the potential for low emissions levels. A modified version of the Mod II was identified as a manufacturable ASE design for commercial production. In conjunction with engine technology development, technology transfer proceeded through two ancillary efforts: the Industry Test and Evaluation Program (ITEP) and the NASA Technology Utilization (TU) project. The ITEP served to introduce Stirling technology to industry, and the TU project provided vehicle field demonstrations for thirdparty evaluation in everyday use and accomplished more than 3100 hr and 8,000 miles of field operation. To extend technology transfer beyond the ASE project, a Space Act Agreement between MTI and NASA-Lewis Research Center allowed utilization of project resources for additional development work and emissions testing as part of an industry-funded Stirling Natural Gas Engine program.

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Page : pages
File Size : 16,93 MB
Release : 1977
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Ford Motor Company has sponsored research and development of a 170 hp swashplate-type of Stirling engine suitable for application to a passenger car having a curb weight in the neighborhood of 4,600 pounds. The success of this program has justified the need for investigating the application of the Stirling engine to passenger vehicles of smaller size and lighter weight. Progress is reported for the research program which has two tasks. Task I provided for preparation of a report containing an evaluation and presentation of the results of Contractor-financed testing of a Torino passenger car powered by a 170 hp Stirling cycle engine. Task II provides for a feasibility study to evaluate the potential of a Stirling cycle engine for significant improvements in emissions and fuel economy over the present day internal combustion engine, and to develop a concept of an 80 to 100 hp engine design suitable for use in a passenger car in the 2500 to 3000 lb. weight class. The ultimate objective of this and other Ford programs is to develop technology to determine whether it is reasonable to undertake a high volume Stirling engine production program.

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Page : pages
File Size : 49,42 MB
Release : 1976
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Ford Motor Company has sponsored research and development of a 170-hp swashplate-type of Stirling engine suitable for application to a passenger car having a curb weight in the neighborhood of 4600 lb. The success of this application program has justified the need for investigating the application of the Stirling engine to passenger vehicles of smaller size and lighter weight. Progress is reported on a program which has as its objectives two tasks. Task I provides for preparation of a report containing an evaluation and presentation of the results of Contractor-financed testing of a Torino passenger car powered by a 170-hp Stirling cycle engine. Task II provides for the conduct of a feasibility study to evaluate the potential of a Stirling cycle engine for significant improvement in emissions and fuel economy over the present day internal combustion engine, and to develop a concept of an 80- to 100-hp engine design suitable for use in a passenger car in the 2500 to 3000 pound weight class. The ultimate objective of this and ensuing programs is to develop an engine design feasible for high volume production.

Author : Allan J. Organ
Publisher : John Wiley & Sons
Page : 284 pages
File Size : 42,88 MB
Release : 2013-11-15
Category : Technology & Engineering
ISBN : 1118818415

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Some 200 years after the original invention, internal design of a Stirling engine has come to be considered a specialist task, calling for extensive experience and for access to sophisticated computer modelling. The low parts-count of the type is negated by the complexity of the gas processes by which heat is converted to work. Design is perceived as problematic largely because those interactions are neither intuitively evident, nor capable of being made visible by laboratory experiment. There can be little doubt that the situation stands in the way of wider application of this elegant concept. Stirling Cycle Engines re-visits the design challenge, doing so in three stages. Firstly, unrealistic expectations are dispelled: chasing the Carnot efficiency is a guarantee of disappointment, since the Stirling engine has no such pretentions. Secondly, no matter how complex the gas processes, they embody a degree of intrinsic similarity from engine to engine. Suitably exploited, this means that a single computation serves for an infinite number of design conditions. Thirdly, guidelines resulting from the new approach are condensed to high-resolution design charts – nomograms. Appropriately designed, the Stirling engine promises high thermal efficiency, quiet operation and the ability to operate from a wide range of heat sources. Stirling Cycle Engines offers tools for expediting feasibility studies and for easing the task of designing for a novel application. Key features: Expectations are re-set to realistic goals. The formulation throughout highlights what the thermodynamic processes of different engines have in common rather than what distinguishes them. Design by scaling is extended, corroborated, reduced to the use of charts and fully Illustrated. Results of extensive computer modelling are condensed down to high-resolution Nomograms. Worked examples feature throughout. Prime movers (and coolers) operating on the Stirling cycle are of increasing interest to industry, the military (stealth submarines) and space agencies. Stirling Cycle Engines fills a gap in the technical literature and is a comprehensive manual for researchers and practitioners. In particular, it will support effort world-wide to exploit potential for such applications as small-scale CHP (combined heat and power), solar energy conversion and utilization of low-grade heat.