Electric control piston oil injection cooling system and working method thereof

Abstract

The invention discloses an electric control piston oil injection cooling system and a working method thereof. Through a double-oil-injection working mode of an oil injection nozzle at the bottom of apiston, the effect of cooling a cold oil cavity in the piston and the effect of cooling the bottom of the piston are achieved. The double-oil-injection mode of an inner nozzle and an oil injection nozzle outer sleeve is adopted for the oil injection nozzle, a plurality of obliquely upward outer injection holes are distributed in the side face of the tail section of the oil injection nozzle outer sleeve in the circumferential direction, and the multiple outer injection holes form an outer annular nozzle. A heating oil channel connected with an inlet of the oil injection nozzle is arranged between an oil filter and an oil cooler, an oil heater is installed in the heating oil channel, a hot electromagnetic valve switch is installed on a pipeline close to an inlet of the oil heater, an auxiliary oil channel is arranged at the connecting position of the oil heater and the inlet of the oil injection nozzle and connected to a main oil channel, and a cold electromagnetic valve switch is installed on the auxiliary oil channel. According to the electric control piston oil injection cooling system and the working method thereof, lubricating oil injection of the cold oil cavity in the piston and lubricating oil injection of the bottom of the piston can be achieved, the lubricating condition of the piston and a cylinder sleeve during cold starting is improved, and the heat efficiency of aninternal combustion engine is improved.

Description

Technical field: [0001] The invention belongs to the technical field of internal combustion engines. Specifically, the invention relates to an electronically controlled piston fuel injection cooling system and a working method thereof. Background technique: [0002] When the internal combustion engine is working, friction occurs between the surfaces of the moving parts due to the relatively high-speed motion. If the metal surface is directly rubbed, it will not only increase the internal power loss of the internal combustion engine, but also cause the friction surface to wear rapidly. At the same time, the large amount of heat generated by the friction will cause the working surface of some parts to melt, causing the internal combustion engine to fail to work normally. In order to ensure the normal operation of the internal combustion engine, it is necessary to lubricate the surfaces of the relative moving parts to form a lubricating oil film between the parts and change dir...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the oil spraying method in which the cooling oil is sprayed vertically upwards into the internal cooling oil chamber of the piston through the oil nozzle cannot effectively cool the bottom of the piston; or the oil spraying method directly using a single nozzle to spray upwards can not effectively use the internal cooling oil chamber The two methods have the problems of insufficient oil cooling area and low cooling efficiency respectively.

Images