Passenger car gasoline engine turbocharger bearing body

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0015] see Figure 1-2 , The present invention provides a technical solution: a bearing body of a turbocharger for a gasoline engine of a passenger car, including a bearing body 1, a thrust bearing oil inlet 4, a first annular cooling water cavity 5, a floating bearing oil inlet 7, a third annular The cooling water chamber 9, the first cooling water inlet 12 and the first cooling water outlet 13, the bearing body 1 is provided with a bearing body oil inlet 2 above the bearing body 1, and the bearing body 1 includes a thrust bearing 3 inside, and the right end of the thrust bearing oil inlet 4 It is connected with the oil inlet 2 of the bearing body, and the left end of the thrust bearing oil inlet 4 is connected with the thrust bearing 3. A second annular cooling water cavity 6 is arranged below the first annular cooling water cavity 5, and the first annular cooling water cavity 5 The distance between the second annular cooling water cavity 6 and the second annular cooling water cavity 6 is in the range of 5-10 mm, to prevent the first annular cooling water cavity 5 and the second annular cooling water cavity 6 from generating heat exchange, and the upper end of the floating bearing oil inlet 7 and the bearing body inlet. The oil port 2 is connected, and the lower end of the oil inlet port 7 of the floating bearing is connected with the floating bearing 8. The left side of the third annular cooling water cavity 9 is provided with an oil return cavity 10, and the oil return cavity 10 includes an oil return port 11 inside. A second cooling water outlet 15 is provided below the first cooling water inlet 12. The first cooling water inlet 12 communicates with the first cooling water outlet 13 through the first annular cooling water cavity 5 and the second annular cooling water cavity 6, and the One end of the annular cooling water cavity 5 and the second annular cooling water cavity 6 connected to the first cooling water inlet 12 has a larger diameter and width, and a second cooling water inlet 14 is provided below the first cooling water outlet 13. The water inlet 14 is communicated with the second cooling water outlet 15 through the third annular cooling water cavity 9 , and the end of the third annular cooling water cavity 9 connected to the second cooling water inlet 14 has a larger diameter width.

[0016] like image 3 As shown, the inner wall of the water cavity of the second annular cooling water cavity 6 is arranged in a continuous concave-convex shape; such as Figure 4 As shown, the inner wall of the water cavity of the third annular cooling water cavity 9 is arranged in a continuous concave and convex shape; the cooling contact surface is increased, and the cooling effect is improved.

[0017] Working principle: When using the passenger car gasoline engine turbocharger bearing body, the bearing body 1 is fixed and installed, the cooling oil enters the bearing body 1 through the bearing body oil inlet 2, and is distributed through the thrust bearing oil inlet 4 and the floating bearing oil inlet 7 to cool the thrust bearing 3 and the floating bearing 8, and the cooling water enters the first annular cooling water cavity 5 and the second annular cooling water through the first cooling water inlet 12 and the second cooling water inlet 14. Inside the cavity 6 and the third annular cooling water cavity 9 , the temperature in the bearing body 1 is taken away during the flow process, and finally flows out from the first cooling water outlet 13 and the second cooling water outlet 15 .

[0018] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or to perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.