Results 251 to 260 of about 251,598 (308)
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Abnormal noise detector for gear units
The Journal of the Acoustical Society of America, 1987An abnormal noise detector for use in evaluating the quality of automotive gear units or the like is disclosed. The present invention employs a microphone which picks up the noise produced by a gear unit being tested and an adjustable bandpass filter connected to the microphone which passes only those signals from the microphone having a desired ...
Hiroshi Sugimoto, Koichi Fukada
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Finite element analysis of internal gear in high-speed planetary gear units
Transactions of Tianjin University, 2008The stress and the elastic deflection of internal ring gear in high-speed spur planetary gear units are investigated. A rim thickness parameter is defined as the flexibility of internal ring gear. Six evenly spaced linear springs are used to describe the fitting status between internal ring gear and the gearcase.
Nan Ge, Jun Zhang
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1995
To solve a problem of transmission it is possible to design a special gear unit as follows. Its study can be prolonged or rapid. In the first case the result is a good product characterized, however, by exorbitant production costs. In the second there could also be some problems during operation as the solution has been adopted in a too hurried way ...
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To solve a problem of transmission it is possible to design a special gear unit as follows. Its study can be prolonged or rapid. In the first case the result is a good product characterized, however, by exorbitant production costs. In the second there could also be some problems during operation as the solution has been adopted in a too hurried way ...
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Investigating Vibration Sources of Faulty Gear Units
Key Engineering Materials, 2008A crack in the tooth root is the least desirable damage of gear units, which often leads to failure of gear unit operation. A possible damage can be identified by monitoring vibrations. The influences that a crack in the tooth root of a single-stage gear unit has upon vibrations are dealt with.
Ales Belsak, Joze Flasker
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Bearings Failure of Gear Drive Unit Caused by Gear Resonance
2013Gear transmission units could work properly in the resonance conditions but they cause very unfavorable effects on other components and the environment. It is necessary to identify the resonance range, and afterwards to harmonize design parameters with operating conditions, so as to avoid primary and secondary resonance.
Milosav Ognjanović +2 more
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Magnetically geared conveyor drive unit - an updated version
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020This paper presents an updated design of a magnetically geared drive unit for chain conveyor applications. The magnetic gear is placed partially inside the sprocket that drives the chain, and the permanent magnet synchronous machine driving the gear is placed axially next to the gear. The first version suffered from very large rotational losses leading
Simon Staal Nielsen +3 more
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Investigating Sound Sources of Faulty Gear Units
Key Engineering Materials, 2009In diagnostics, the condition of mechanical systems can be determined very reliably on the basis of noise. Noise source visualization is based on a number of different methods. These methods are primarily intended for a specific noise source in a specific acoustic environment. In this paper, a visualization method of complex noise sources, based on the
Ales Belsak, Jurij Prezelj
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Development of Gear Parts for VVT Unit
SAE Technical Paper Series, 1997<div class="htmlview paragraph">The new intelligent VVT (Variable Valve Timing) -i, is one of the systems developed to improve engine performance. The pulley unit is one of the most important mechanical components of the system.</div> <div class="htmlview paragraph">We developed a suitable process for the four main parts of the VVT-i ...
Hitoshi Nakamura +3 more
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Synthesis of single differential gear units
Journal of Mechanisms, 1970Abstract By considering the kinematics and manner of incorporation of the essential element of all differential gearing arrangements - the planetary member - a basic arrangement for single differential gears is proposed. The modifications necessary to the basic form to produce either bevel-gear or cylinder-gear arrangements are examined.
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Asymmetric Gear Blank Optimization to Reduce Gear Noise for Electric Drive Units
SAE Technical Paper Series<div class="section abstract"><div class="htmlview paragraph">Gear whine has emerged as a significant challenge for electric vehicles (EVs) in the absence of engine masking noise. The demand from customers for premium EVs with high speed and high torque density introduces additional NVH risks.
Song He +5 more
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