A kind of opposed piston engine capable of lubricating piston and lubricating method thereof

Abstract

The invention discloses an opposed piston engine capable of lubricating pistons and a lubricating method of the engine, and relates to the field of internal combustion engines. The engine comprises an air cylinder sleeve. Crank cases are fixed to the two ends of the air cylinder sleeve correspondingly in a threaded connection mode and internally provided with engine oil passages. One ends of the engine oil passages communicate with a main oil channel of the engine, and the other ends of the engine oil passages communicate with an oil inlet in the air inlet side and an oil inlet in the exhaust side correspondingly. An air inlet piston capable of reciprocating in the air cylinder sleeve is arranged between the center of the air cylinder sleeve and the oil inlet in the air inlet side. An exhaust piston capable of reciprocating in the air cylinder sleeve is arranged between the center of the air cylinder sleeve and the oil inlet in the exhaust side. The outer circumferential faces of the skirt sections of the air inlet piston and the exhaust piston are provided with first skirt section gas ring annular grooves, second skirt section gas ring annular grooves and skirt section oil ring annular grooves. Oil storage cavities are formed in the skirt section oil ring annular grooves. According to the opposed piston engine and the lubricating method, the engine oil lubricating amount of the upper half faces of the horizontally opposed pistons and the engine oil backflow efficiency of the lower half parts of the pistons can be effectively improved, the engine oil return amount is increased, and the engine oil consumption of the engine is reduced.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to an opposed-piston engine capable of lubricating pistons and a lubricating method thereof. Background technique [0002] The concept of the opposed-piston two-stroke engine was proposed as early as around 1890. The opposed pistons of the opposed-piston two-stroke engine are arranged in the same cylinder liner, and the "air port-air port" direct current scavenging method is adopted, and the cylinder head and the gas distribution mechanism are cancelled, which has high power density, small heat transfer loss, and balanced Good sex and other advantages. In the late 20th century, due to the increasingly stringent modern emission regulations, the widespread emission problems of two-stroke engines prevented the development and application of opposed-piston two-stroke engines. In recent years, with the development of modern technology and electronic control technolo...

AI Technical Summary

Problems solved by technology

However, due to the scraping effect of the oil ring on the piston skirt, the lubrication of the oil ring and the gas ring on the opposite piston head is poor

When the oil in the oil ring groove of the piston skirt accumulates a lot and cannot be discharged quickly, the accumulated oil will flow back to the intake chamber and exhaust chamber, and the oil entering the intake chamber will enter the combustion chamber along with the intake airflow. Cause oil burning; the oil entering the exhaust chamber will be directly discharged into the atmosphere along with the combustion exhaust gas, resulting in high oil consumption and worsening emissions.

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