JPS5677511A - Low-noise engine - Google Patents
Low-noise engineInfo
- 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
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
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)
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 |
-
1979
- 1979-11-30 JP JP15599779A patent/JPS5677511A/en active Pending
Cited By (2)
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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