Injection Quantity Control Device for Piston Cooling Jets

Abstract

The invention discloses an oil injection amount control device suitable for a piston cooling nozzle, which comprises an oil inlet pipeline, an oil outlet pipeline, at least two oil conveying pipelines, a sliding block and a driving mechanism, wherein the oil outlet pipeline is used for being connected with the piston cooling nozzle; the oil conveying pipelines are connected with the oil inlet pipeline and oil outlet pipeline, and used for guiding oil in the oil inlet pipeline to flow into the oil outlet pipeline; the sliding block is movably arranged and used for adjusting the quantity of oil flowing into the oil outlet pipeline; and the driving mechanism is connected with the sliding block. According to the oil injection amount control device, the quantity of engine oil flowing into the piston cooling nozzle can be controlled due to fitting between the movable sliding block and the oil conveying pipelines, so that the quantity of oil sprayed to the piston cooling nozzle can be controlled accurately, the consumption and the fuel consumption of an engine oil pump are reduced, and the economic efficiency and the net output power of the engine are improved.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular, the invention relates to an oil injection volume control device suitable for piston cooling nozzles. Background technique [0002] With the oil energy crisis and the continuous strengthening of emission regulations in various countries, the engine is forced to move towards high power and high torque while maintaining a small displacement to enhance engine economy. This has led to major manufacturers continuously increasing the thermal efficiency of the engine, causing the temperature in the combustion chamber to continue to rise, which in turn leads to knocking and super knocking. In order to avoid this situation, the piston cooling nozzle is used to cool the piston, thereby reducing combustion chamber temperature. Piston cooling nozzles are divided into pressure valve type, temperature control type and electric control type. [0003] At present, the piston cooling nozzle mostly ...

AI Technical Summary

Problems solved by technology

[0003] At present, the piston cooling nozzle mostly uses a fixed pressure valve type, that is, the valve core can be opened when the oil pressure reaches a certain level, but there is no linear relationship between the engine temperature and the oil pressure, which leads to the engine under certain working conditions. The temperature of the combustion chamber is low, but the piston cooling nozzle is still injecting oil to cool the piston

The temperature-controlled piston cooling nozzle is opened when the oil temperature reaches a certain value, that is, it depends on the oil temperature to determine the opening and closing. Quantity cannot be controlled

Although the electronically controlled piston cooling nozzle can be controlled to open and close, it has no strict control on the flow rate, which reduces the efficiency of the oil pump.

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