Download or read book Modeling and Characterization of a Low Power Hydro mechanical Transmission with Comparisons to a Hydrostatic Transmission written by Kurt William Romans and published by . This book was released on 2005 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydro-mechanical transmissions attempt to balance the productivity increases of hydrostatic transmissions with the higher efficiencies of mechanical transmissions. This technology provides a smooth transition between gear ratios useful to power vehicles of various applications. This balance is accomplished by splitting the input power into two phases, hydrostatic and mechanical transmission. These two phases are then added back together through the use of a planetary gear set. In this study, laboratory experiments were preformed to characterize efficiency and power flow of the hydrostatic and mechanical phases of the transmission. Comparisons of the performance of a hydro-mechanical transmission with the stand alone hydrostatic transmission were made. A mathematical model was also developed to simulate transmission performance which was compared with experimental results. Conceptually, higher efficiencies would be achieved when all of the power is transmitted mechanically, under the assumption of no hydrostatic leakage. The results show this to be true while identifying transmission ranges of maximum efficiency. By being able to model and understand the characteristics of the hydro-mechanical transmission, the design can be optimized to fit different applications. This work also shows that by adding a simple planetary gear set to a hydrostatic transmission, efficiencies and power ranges can both be increased.
Download or read book Dynamic Modeling Simulation and Parameter Identification of a Hydrostatic Transmission with Application to Crane System Characterization written by Zhiru Shi and published by . This book was released on 2006 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Master s Theses Directories written by and published by . This book was released on 2006 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Download or read book Designing and Modeling a Split Torque Hydrostatic Transmission in Series with a Manual Transmission for an Automotive Application written by Taha Saad Al-Ghrairi and published by . This book was released on 2012 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing petroleum prices have developed a strong demand for an invention to reduce fuel consumption, as well as cut the produced amount of carbon dioxide via consumed fuel. Hybrid vehicles are an effective invention in terms of the hybrid research area because they can accomplish a low fuel consumption rate, thus dropping the carbon dioxide volume that is produced correspondingly. The main goal of this research is to design and model a hydraulic hybrid transmission that has a controlled pressure displacement pump and a controlled displacement motor. The design will show reasonable safety factor numbers in the worst conditions of operation. In addition, modeling was done for the entire drive train including 16 equations that signify the mechanical path and the hydraulic path, which represent the Hydraulic Hybrid Transmission (HHT). HHT consists of a manual gear box that is mounted in series with a split torque device. The output from the power split device delivers power to the two power paths then combines again via a downstream spur gear. A Proportional-Integral control was designed to make the engine work near a wide open throttle line (WOT), which is the most efficient way for an engine to produce power.
Download or read book Hydrostatic and Hydrodynamic Transmissions written by C. M. Edghill and published by . This book was released on 1977 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Hydrostatic Transmissions written by S. Palaniappan and published by . This book was released on 1961 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrostatic Transmissions for Vehicle Application written by Institution of Mechanical Engineers (Great Britain). Manufacturing Industries Division and published by . This book was released on 1981 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Hydrostatic Drive Vehicle Control and Mechanical Ddesign of Hydrostatic Transmission Components written by Timothy P. Sosnowski and published by . This book was released on 1996 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrostatic Transmission Systems written by Jerry Korn and published by . This book was released on 1969 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Characterization of a Pericyclic Mechanical Transmission written by Jeremy Elijah McGovern and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: From its conception in 1970's, the nutating, now pericyclic, mechanical transmission has undergone several years of rigorous analysis to address common drivetrain considerations of noise, maintenance, and power density. These analytical studies have led to the fabrication of a 50 HP 32:1 reduction ratio prototype. The objective of this thesis is to perform a series of high-speed tests on the prototype, beginning with its assembly and static testing procedure. High-speed experiments of the prototype first require static testing to verify the transmission's functionality. Slow-roll testing was used to analyze contact pattern development and load sharing behavior. Favorable contact patterns across the meshes confirmed preliminary calculations of backlash and apex point tolerances. Equivalent strain readings across both pericyclic gear sets validated housing installation procedures and the system's load sharing capability. Successful results from static testing verified the prototype's assembly procedure. The prototype's integration into the high-speed test stand required fabrication of mounting and shaft coupling components. An auxiliary lubrication system was also assembled to supply the test article with a circulating bath of oil. Thermocouples monitored input and output shaft bearing temperatures through fixtures in the housing. 3-axis accelerometers were embedded into the shaft support blocks to capture the transmission's dynamic behavior. Finally, the strain gauges used in static testing captured load sharing data. This thesis concludes with a characterization of the prototype through high-speed testing data. Power transmission data validated the pericyclic reduction ratio model. Accelerometer data demonstrated the transmission's capability to operate at low vibration, with peak amplitudes of 1.2 and 2.5 inches per second on the pericyclic gear train and output shaft respectively. Acoustic emission data captured the first 5 harmonics of the shaft speed and gear mesh frequencies. The thermal profile showed the shaft bearings remained below 180 °F throughout testing, implying safe operating conditions. Finally, strain and vibration data showed the pericyclic gear train maintained load sharing throughout the entire operating envelope, further validating static testing and assembly procedures. The results of the experiments demonstrate the technological readiness of pericyclic mechanical transmissions.
Download or read book Hydrostatic Power Transmission written by Jean Ulrich Thoma and published by . This book was released on 1964 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Power System Dynamics and Stability written by Peter W. Sauer and published by . This book was released on 1998 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a one-semester senior or beginning graduate level course in power system dynamics. This text begins with the fundamental laws for basic devices and systems in a mathematical modeling context. It includes systematic derivations of standard synchronous machine models with their fundamental controls. These individual models are interconnected for system analysis and simulation. Singular perturbation is used to derive and explain reduced-order models.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book FLEXIBLE VERSUS RESPONSIVE ENGINES Part II Transmission System for Flexible Engines written by C. Lipson and published by . This book was released on 1962 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Literature Abstracts written by Society of Automotive Engineers and published by . This book was released on 2000 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
