Title:
METHOD FOR ANALYZING TORSIONAL VIBRATION OF POWER TRANSMISSION SYSTEM, ANALYZING DEVICE, ANALYZING PROGRAM, AND SHAFTING DEVICE BETWEEN ENGINE AND DRIVEN DEVICE
Document Type and Number:
WIPO Patent Application WO/2009/107688
Kind Code:
A1
Abstract:
A method for analyzing the torsional vibration of a power transmission system by calculating the absolute damping coefficient of a cylinder portion and the relative damping coefficient between cylinders corresponding to a real engine and thereby causing the torsional vibration analysis of the power transmission system to reflect the calculated coefficients is disclosed. An analyzing device, an analyzing program, and a shafting device between the engine and the driven device are also disclosed. The system from an engine to the driven device is modeled into an inertial mass-spring system. The total damping energy, which is the vibration generating energy, balancing the vibration generating energy with the damping energy for a set of resonance points of the natural modes/frequencies is calculated from the measured damping ratio and the calculated mode mass. The total damping energy is expressed by the sum of the absolute and relative damping energies of the engine and the damping energy of an attachment of the driven device/shafting system. Engine absolute damping coefficients and equations of the engine absolute damping coefficients are generated from the result of the measurement of the resonance points to solve the simultaneous equations. Thus, the engine absolute and relative damping coefficients are determined.
Inventors:
SATOU NOBUAKI (JP)
KAWAI KAZUHIRO (JP)
MIURA SHUICHI (JP)
MIZOGUCHI JUNJI (JP)
KAWAI KAZUHIRO (JP)
MIURA SHUICHI (JP)
MIZOGUCHI JUNJI (JP)
Application Number:
PCT/JP2009/053468
Publication Date:
September 03, 2009
Filing Date:
February 19, 2009
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
SATOU NOBUAKI (JP)
KAWAI KAZUHIRO (JP)
MIURA SHUICHI (JP)
MIZOGUCHI JUNJI (JP)
SATOU NOBUAKI (JP)
KAWAI KAZUHIRO (JP)
MIURA SHUICHI (JP)
MIZOGUCHI JUNJI (JP)
International Classes:
G01M15/04; B63B9/00; G01H17/00
Foreign References:
| JP2005113934A | 2005-04-28 |
Other References:
WANG Y. ET AL.: "PREDICTION OF TORSIONAL DAMPING COEFFICIENTS IN RECIPROCATING ENGINES", JOURNAL OF SOUND AND VIBRATION(2000), vol. 238, no. 4, 7 December 2000 (2000-12-07), pages 710 - 719, XP008133165
"Preprints of Meeting on Automotive Engineers No.47-00 2000 Nen Shunki Taikai, 25 May, 2000 (25.05.00)", article SHIONO K. ET AL.: "V-Gata 10 Kito Kikan no Crank-Jikukei no Nejiri Shindo", pages: 1 - 4, XP008134311
See also references of EP 2211160A4
W. KER WILSON, PRACTICAL SOLUTION OF TORSIONAL VIBRATION PROBLEMS, 1959
N. AKABORI, TORSIONAL VIBRATION OF MARINE PROPULSION ENGINE (IN JAPANESE), 1963
IWANAMI: "Dictionary of Mathematics (in Japanese), 4-th ed", 2007
"Preprints of Meeting on Automotive Engineers No.47-00 2000 Nen Shunki Taikai, 25 May, 2000 (25.05.00)", article SHIONO K. ET AL.: "V-Gata 10 Kito Kikan no Crank-Jikukei no Nejiri Shindo", pages: 1 - 4, XP008134311
See also references of EP 2211160A4
W. KER WILSON, PRACTICAL SOLUTION OF TORSIONAL VIBRATION PROBLEMS, 1959
N. AKABORI, TORSIONAL VIBRATION OF MARINE PROPULSION ENGINE (IN JAPANESE), 1963
IWANAMI: "Dictionary of Mathematics (in Japanese), 4-th ed", 2007
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. et al. (Ambassador Roppongi Buildings16-13, Roppongi 3-chome, Minato-k, Tokyo 32, JP)
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