An integrated structure of a blow-off valve and a high-frequency resonant cavity of an automobile turbocharged engine
A technology of high-frequency resonant cavity and turbocharging, which is applied in the direction of intake muffler, etc., can solve the problems of high-frequency resonant cavity disappearance and exhaust noise, so as to improve sound quality, solve the problem of exhaust sound, compact effect
Active Publication Date: 2017-08-29
CHONGQING CHANGAN AUTOMOBILE CO LTD
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[0009]The current supercharger integrated air release method is Figure 1, the air release valve 2 is integrated on the turbocharger body 1. When the air release noise occurs, because the air release valve 2 is far away from the high frequency resonant cavity 3 of the muffler, The deflation noise cannot be well eliminated by the high-frequency resonator, so that the deflation noise propagates through the three main paths mentioned above
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[0024] The present invention will be further described below in conjunction with accompanying drawing.
[0025] see first figure 1 , is the structure of the existing integrated leaking turbocharger and intake and exhaust system, the leaking valve 2 is integrated on the turbocharger body 1, and when the leaking noise occurs, the leaking valve is far away from the high-frequency resonance cavity 3 of the muffler element , the exhaust noise cannot be well eliminated by the high-frequency resonant cavity.
[0026] In order to overcome the above defects, the present invention proposes an integrated structure of the leak valve and the high-frequency resonant cavity, see figure 2 with image 3 , the integrated structure includes a high-frequency resonant cavity 3 installed between the turbocharger body 1 and the intercooler 5, and the difference from the integrated turbocharger is that the high-frequency resonant cavity 3 is provided with a blow-off valve seat, The air release va...
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The invention discloses an air escape valve and high-frequency resonant cavity integrated structure of an automotive turbo supercharged engine to solve the problem of air escape noise of a supercharger of the automotive turbo supercharged engine. The air escape valve and high-frequency resonant cavity integrated structure comprises a high-frequency resonant cavity, an air escape valve seat, a high-pressure end runner of the supercharger, and a low-pressure end runner of the supercharger. The air escape valve and high-frequency resonant cavity integrated structure differs from an integrated turbo supercharger in the aspects that the air escape valve of the supercharger and the air escape valve seat are not arranged on a supercharger body, and that the air escape valve seat and the high-frequency resonant cavity are integrated. In addition, the pipe diameter and the length of the high-pressure end runner of the supercharger, an included angle between the high-pressure end runner and the high-frequency resonant cavity, a position of the high-pressure end runner on the high-frequency resonant cavity, and the pipe diameter and the length of the low-pressure end runner meet the design requirements. The air escape valve and high-frequency resonant cavity integrated structure adopts an air escape runner externally-arranged structure, so that the problem of the air escape noise generated by the integrated turbo supercharger in a working process can be solved effectively.
Description
technical field [0001] The invention belongs to the technical field of automobile noise control, and in particular relates to a structure for solving the exhaust noise of an automobile turbocharger. Background technique [0002] As gasoline prices continue to rise, automakers are looking for different ways to improve the fuel economy of their vehicles. One of the measures is to reduce the size of the engine while using supercharging technology. With the wide use of supercharging technology and the layout of the engine compartment space, the integrated turbocharger in which the exhaust valve and the supercharger body are integrated has been widely used in automobile engines, but the exhaust noise generated by it is becoming more and more Prominent, and gradually rising to become one of the main contributors to interior noise. The leakage noise of the turbocharger is the fluid noise generated by the injection of gas from the high-pressure side to the low-pressure side at the...
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IPC IPC(8): F02M35/12
Inventor 黎杰金栋胡成太匡小红张冬莲张硕高海莲张海燕万玉平李阳
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD