Title:
RECIPROCATING ROTARY MECHANISM OF ENGINE AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2019078349
Kind Code:
A
Abstract:
To effectively reduce noise generated during engine operation in a reciprocating rotary mechanism of an engine in which first and second dynamic vibration absorbers are provided to a piston or a connecting rod.SOLUTION: A resonance frequency of a second dynamic vibration absorber 82 is higher than a resonance frequency of a first dynamic vibration absorber 81. At least one of a ratio of a mass of a mass part 83a of the first dynamic vibration absorber 81 to a reciprocating inertial mass of a reciprocating rotary mechanism and a ratio of a mass of a mass part 83b of the second dynamic vibration absorber 82 to the reciprocating inertial mass of the reciprocating rotary mechanism is set so that an antiresonance peak frequency that appears at a higher-frequency side of the resonance frequency of the first dynamic vibration absorber 81 has a substantially different value from an antiresonance peak frequency that appears at a lower-frequency side of the resonance frequency of the second dynamic vibration absorber 82.SELECTED DRAWING: Figure 4
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Inventors:
NAGATO KIYONORI
MORISHIMA TORU
KIKUCHI TAKUYA
MORI TSUNEHIRO
ENOKIZONO REI
SHIRASAGO YUICHI
HIRATA KOICHI
SUMITANI AKIRA
YAMADA RUMIKO
MORISHIMA TORU
KIKUCHI TAKUYA
MORI TSUNEHIRO
ENOKIZONO REI
SHIRASAGO YUICHI
HIRATA KOICHI
SUMITANI AKIRA
YAMADA RUMIKO
Application Number:
JP2017206569A
Publication Date:
May 23, 2019
Filing Date:
October 25, 2017
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F16J1/16; F16C9/04; F16F15/02
Attorney, Agent or Firm:
Takuji Yamada
Mikio Tanaka
Mikio Tanaka