Cooling and lubricating system of supercharger

Abstract

The invention belongs to the field of engines, in particular to a cooling and lubricating system of a supercharger. The system comprises a main circulation loop and an independent circulation branch;the main circulation loop comprises a supercharger, a one-way valve and an engine main pump arranged upstream of the supercharger; and the independent circulation branch comprises an electronic pump,a joint between electronic pump and the main circulation loop is arranged on a pipeline between the supercharger and the engine main pump, the one-way valve is arranged on a pipeline between the jointand the engine main pump, and the flow direction of the one-way valve is arranged to be consistent with the main circulation loop. The electronic pump can solve the problems of dry grinding, coking at high temperature and the like of the supercharger rotor system, running time of the electronic pump is shortened, and the service life of the electronic pump is prolonged.

Description

technical field [0001] The invention belongs to the field of engines, in particular to a cooling and lubricating system for a supercharger. Background technique [0002] Superchargers have been widely used in engines because of their effectiveness in increasing engine power, reducing fuel consumption, and improving emissions. Since the turbocharger is connected to the exhaust pipe during operation, and the speed of the turbocharger is as high as hundreds of thousands of revolutions per minute during normal operation, it is necessary to ensure that the rotating shaft and bearing of the turbocharger are well lubricated, and at the same time A large amount of heat inside the supercharger is taken away from the supercharger through the flow of lubricating oil, thus playing a protective role. [0003] For the supercharger, the traditional lubrication and cooling method is to provide a certain amount of oil and oil pressure through the oil pump to lubricate the supercharger of th...

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Problems solved by technology

[0010] The invention discloses a cooling and lubricating system of a supercharger, which adopts the parallel connection of electronic pumps, solves the problem of excessive resistance of the electronic pumps connected in series in the cooling and lubricating passage of the engine, and solves the problems of frequent start and stop of the engine, misoperation by users and special applications of hybrid power The supercharger rotor system caused by dry grinding, high temperature coking and other problems; the check valve controls the flow direction of the oil circuit when the electronic pump continues to run, ensuring sufficient flow of the supercharger and good cooling and lubrication effect

[0012] The electronic pump parallel connection method is adopted, that is, the electronic pump cycle is independent of the main cycle of the engine, which solves the problem of excessive resistance of the electronic pump in series in the cooling and lubrication passage of the engine, and solves the problems caused by frequent engine start and stop, user misoperation and special hybrid applications. Problems such as dry grinding and high temperature coking of the rotor system of the supercharger;

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