A bearing support and a cooling lubricating oil circuit for the cam of a high-pressure oil pump of a direct-injection gasoline engine
A bearing support, lubricating oil circuit technology, which is applied to fuel injection pumps, components of pumping devices for elastic fluids, pump components, etc., can solve problems such as unfavorable processing and manufacturing, complex oil circuit structure, etc. , Good lubrication effect, sufficient lubrication and cooling effect
Active Publication Date: 2019-04-30
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
However, its oil circuit structure is complicated, which is not conducive to processing and manufacturing
Method used
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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0021] The invention discloses a base 3a, which is provided with an annular groove 3b for installing a camshaft assembly 2; one end of the base 3a is connected with a tailstock 3c perpendicular thereto; the base 3a is provided with a cam Shaft support annular oil passage 31; tailstock 3c is provided with camshaft support tail oil passage 32; camshaft support annular oil passage 31 communicates with camshaft support tail oil passage 32; tailstock 3c is also provided with The nozzle 33 connected to the oil passage 32 at the end of the camshaft support; the central axis of the nozzle 33 is perpendicul...
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The invention discloses a cooling lubricating oil way of a bearing support and a direct-injection gasoline engine high-pressure oil pump cam. The cooling lubricating oil way comprises a base provided with a ring groove where a cam shaft assembly is installed; one end of the base is connected with a tailstock distributed by a certain angle with respect to the base; the base is provided with a cam shaft support annular oil way; the tailstock is provided with a cam shaft support tail oil way; the cam shaft support annular oil way is communicated with the cam shaft support tail oil way; the tailstock is further provided with a spraying nozzle communicated with the cam shaft support tail oil way; the spraying nozzle is located on the side, close to the ring groove, of the tailstock; and an inclined angle is formed between the central axis of the spraying nozzle and the horizontal face. The cooling lubricating oil way is simple in structure, orientation lubrication of a high-pressure oil pump and a plunger can be achieved while sufficient lubrication and cooling of an oil pump cam are guaranteed, the cooling and lubrication effect are good, the design is ingenious, the layout is compact, the cooling and lubrication effect are good, newly increased parts do not exist, a complex oil way does not need to be machined on a cylinder cover, and layout of an air cylinder cover and an air cylinder head cover is not influenced.
Description
technical field [0001] The invention relates to a bearing support and a cooling and lubricating structure for a high-pressure oil pump cam, which belongs to the technical field of automobile engines, in particular to a bearing support with a lubricating oil passage and a high-pressure direct-injection gasoline engine using the bearing support Cooling lubricating oil circuit for oil pump cam. Background technique [0002] Since the direct injection gasoline engine has high requirements on the spray quality of the engine fuel injector, this requires a high fuel injection pressure, so the direct injection gasoline engine is specially equipped with a high-pressure oil pump to increase the pressure of the fuel rail. Usually, the high-pressure oil pump is set on the cylinder head and driven by the camshaft. When the engine speed is high, the high-pressure oil pump cam rotates at a high speed, which will lead to high operating temperature of the oil pump cam and the oil pump plunge...
Claims
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IPC IPC(8): F02M59/44F02M59/10F04B53/18F04B53/08
CPCF02M59/102F02M59/44F04B53/08F04B53/18
Inventor 吴斌峰黎华平刘勰潘理杰孙庆
Owner DONGFENG MOTOR CORP HUBEI