Piston cooling nozzle arrangement system and engine of an engine

Abstract

The invention provides a piston cooling nozzle arrangement system of an engine and the engine, which belong to the field of engines. The piston cooling nozzle arrangement system is arranged on the intake side of the upper cylinder block of the engine, and includes: a transverse oil passage arranged along the transverse direction of the upper cylinder block, and a plurality of sub-oil passages communicating with the transverse oil passage are provided at its lower end for Install the piston cooling nozzle; the engine oil passage intersects with the horizontal oil passage, and is used to feed oil. The cross section of the oil passage is set to gradually decrease upward along the bottom of the upper cylinder, and the diameter of the intersection with the transverse oil passage Larger than the diameter of the horizontal oil passage section; the electric control valve includes a spool set in the horizontal oil passage, the spool is blocked at the intersection of the horizontal oil passage and the engine oil passage, and there is a connection between the horizontal oil passage and the engine oil passage inside. The oil passage of the spool, the electric control valve controls the opening or closing of the oil passage of the spool to connect or cut off the horizontal oil passage and the oil passage. The piston cooling nozzle arrangement system and the engine of the present invention can simplify the structure and save the cost.

Description

technical field [0001] The invention relates to the field of engines, in particular to an engine piston cooling nozzle arrangement system and the engine. Background technique [0002] With the increasingly stringent fuel consumption restrictions and emission regulations of vehicles in various countries, major automobile companies in the world are investing heavily in improving engine performance. Most OEMs adopt technologies such as in-cylinder direct injection and turbocharging, which not only bring performance improvement and light weight, but also result in continuous increase in engine power per liter. The height of the power increase also means the increase of the heat load. Nowadays, many supercharged engines use electronic piston cooling nozzles to freely control the opening and closing of the nozzles, so as to deliberately control the temperature of the pistons to achieve more complete combustion. At the same time To meet the excessive heat load increase of the engi...

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Problems solved by technology

[0004] That is to say, the arrangement of the oil passage of the existing piston cooling nozzle requires more oil passages, sealing parts and heat shields, etc., so the structure is more complicated and the cost is higher

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