JPS5677511A - Low-noise engine - Google Patents

Low-noise engine

Info

Publication number
JPS5677511A
JPS5677511A JP15599779A JP15599779A JPS5677511A JP S5677511 A JPS5677511 A JP S5677511A JP 15599779 A JP15599779 A JP 15599779A JP 15599779 A JP15599779 A JP 15599779A JP S5677511 A JPS5677511 A JP S5677511A
Authority
JP
Japan
Prior art keywords
cooling water
engine
cylinder block
passages
ultrasonic vibrators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15599779A
Other languages
Japanese (ja)
Inventor
Kuninari Nakajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP15599779A priority Critical patent/JPS5677511A/en
Publication of JPS5677511A publication Critical patent/JPS5677511A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To lower the vibrational energy emitted to the outside of an engine by the intermediary of cooling water, by attaching ultrasonic vibrators to the outer wall surface of a cylinder block in the manner that they face cooling-water passages in the cylinder block, and producing air bubbles in the cooling water.
CONSTITUTION: Ultrasonic vibrators 8 are attached to the outer wall surface of cylinder block 1, for instance, two for each cylinder, in the manner that they face cooling-water passages 7. These ultrasonic vibrators 8 are connected to a high- frequency oscillator 9 and vibrated at a high frequency by the high-frequency voltage produced by the oscillator 9 which is connected to a battery 10, so that fine bubbles are produced in cooling water by the cavity function. Thus, when the vibational energy produced by the operation of engine is transmitted to cooling water in passages 7, the aforesaid fine bubbles causes expansion and contraction by the vibrational energy transmitted to the same. Therefore, most of the vibrational energy is absorbed by the cooling water and the noise level of the engine can be lowered.
COPYRIGHT: (C)1981,JPO&Japio
JP15599779A 1979-11-30 1979-11-30 Low-noise engine Pending JPS5677511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15599779A JPS5677511A (en) 1979-11-30 1979-11-30 Low-noise engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15599779A JPS5677511A (en) 1979-11-30 1979-11-30 Low-noise engine

Publications (1)

Publication Number Publication Date
JPS5677511A true JPS5677511A (en) 1981-06-25

Family

ID=15618080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15599779A Pending JPS5677511A (en) 1979-11-30 1979-11-30 Low-noise engine

Country Status (1)

Country Link
JP (1) JPS5677511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216280A (en) * 2013-04-15 2013-07-24 浙江大学 Bubble aggregation engine and bubble aggregation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216280A (en) * 2013-04-15 2013-07-24 浙江大学 Bubble aggregation engine and bubble aggregation method
CN103216280B (en) * 2013-04-15 2015-02-25 浙江大学 Bubble aggregation engine and bubble aggregation method

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